# configure.ac for GCC # Process this file with autoconf to generate a configuration script. # Copyright (C) 1997-2022 Free Software Foundation, Inc. #This file is part of GCC. #GCC is free software; you can redistribute it and/or modify it under #the terms of the GNU General Public License as published by the Free #Software Foundation; either version 3, or (at your option) any later #version. #GCC is distributed in the hope that it will be useful, but WITHOUT #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License #for more details. #You should have received a copy of the GNU General Public License #along with GCC; see the file COPYING3. If not see #. # -------------------------------- # Initialization and sanity checks # -------------------------------- AC_INIT AC_CONFIG_SRCDIR(tree.cc) AC_CONFIG_HEADER(auto-host.h:config.in) gcc_version=`cat $srcdir/BASE-VER` # Determine the host, build, and target systems AC_CANONICAL_BUILD AC_CANONICAL_HOST AC_CANONICAL_TARGET # Determine the noncanonical host name, for Ada. ACX_NONCANONICAL_HOST # Determine the noncanonical target name, for directory use. ACX_NONCANONICAL_TARGET # Used for constructing correct paths for offload compilers. real_target_noncanonical=${target_noncanonical} accel_dir_suffix= # Determine the target- and build-specific subdirectories GCC_TOPLEV_SUBDIRS # Set program_transform_name AC_ARG_PROGRAM # Check for bogus environment variables. # Test if LIBRARY_PATH contains the notation for the current directory # since this would lead to problems installing/building glibc. # LIBRARY_PATH contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(LIBRARY_PATH variable) changequote(,)dnl case ${LIBRARY_PATH} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) library_path_setting="contains current directory" ;; *) library_path_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($library_path_setting) if test "$library_path_setting" != "ok"; then AC_MSG_ERROR([ *** LIBRARY_PATH shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # Test if GCC_EXEC_PREFIX contains the notation for the current directory # since this would lead to problems installing/building glibc. # GCC_EXEC_PREFIX contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) changequote(,)dnl case ${GCC_EXEC_PREFIX} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) gcc_exec_prefix_setting="contains current directory" ;; *) gcc_exec_prefix_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($gcc_exec_prefix_setting) if test "$gcc_exec_prefix_setting" != "ok"; then AC_MSG_ERROR([ *** GCC_EXEC_PREFIX shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # ----------- # Directories # ----------- # Specify the local prefix local_prefix= AC_ARG_WITH(local-prefix, [AS_HELP_STRING([--with-local-prefix=DIR], [specifies directory to put local include])], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; no) ;; *) local_prefix=$with_local_prefix ;; esac]) # Default local prefix if it is empty if test x$local_prefix = x; then local_prefix=/usr/local fi AC_ARG_WITH([native-system-header-dir], [ --with-native-system-header-dir=dir use dir as the directory to look for standard system header files in. Defaults to /usr/include.], [ case ${with_native_system_header_dir} in yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;; /* | [[A-Za-z]]:[[\\/]]*) ;; *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;; esac configured_native_system_header_dir="${withval}" ], [configured_native_system_header_dir=]) AC_ARG_WITH(build-sysroot, [AS_HELP_STRING([--with-build-sysroot=sysroot], [use sysroot as the system root during the build])], [if test x"$withval" != x ; then SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval" fi], [SYSROOT_CFLAGS_FOR_TARGET=]) AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET) if test "x$prefix" = xNONE; then test_prefix=/usr/local else test_prefix=$prefix fi if test "x$exec_prefix" = xNONE; then test_exec_prefix=$test_prefix else test_exec_prefix=$exec_prefix fi AC_ARG_WITH(sysroot, [AS_HELP_STRING([[--with-sysroot[=DIR]]], [search for usr/lib, usr/include, et al, within DIR])], [ case ${with_sysroot} in /) ;; */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;; esac case ${with_sysroot} in yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; *) TARGET_SYSTEM_ROOT=$with_sysroot ;; esac TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' case ${TARGET_SYSTEM_ROOT} in "${test_prefix}"|"${test_prefix}/"*|\ "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ '${prefix}'|'${prefix}/'*|\ '${exec_prefix}'|'${exec_prefix}/'*) t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" TARGET_SYSTEM_ROOT_DEFINE="$t" ;; esac ], [ TARGET_SYSTEM_ROOT= TARGET_SYSTEM_ROOT_DEFINE= CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' ]) AC_SUBST(TARGET_SYSTEM_ROOT) AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) AC_SUBST(CROSS_SYSTEM_HEADER_DIR) # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only # passed in by the toplevel make and thus we'd get different behavior # depending on where we built the sources. gcc_gxx_include_dir= # Specify the g++ header file directory AC_ARG_WITH(gxx-include-dir, [AS_HELP_STRING([--with-gxx-include-dir=DIR], [specifies directory to put g++ header files])], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; no) ;; *) gcc_gxx_include_dir=$with_gxx_include_dir ;; esac]) # If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate # the former in the latter and, upon success, compute gcc_gxx_include_dir as # relative to the sysroot. gcc_gxx_include_dir_add_sysroot=0 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. if test x${gcc_gxx_include_dir} = x; then if test x${enable_version_specific_runtime_libs} = xyes; then gcc_gxx_include_dir='${libsubdir}/include/c++' else libstdcxx_incdir='include/c++/$(version)' if test x$host != x$target; then libstdcxx_incdir="$target_alias/$libstdcxx_incdir" fi gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" fi elif test "${with_sysroot+set}" = set; then gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'` if test "${gcc_gxx_without_sysroot}"; then gcc_gxx_include_dir="${gcc_gxx_without_sysroot}" gcc_gxx_include_dir_add_sysroot=1 fi fi # Configuration for an alternate set of C++ headers. gcc_gxx_libcxx_include_dir= # Specify the alternate g++ header file directory AC_ARG_WITH(gxx-libcxx-include-dir, [AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR], [specifies directory to find libc++ header files])], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;; no) ;; *) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;; esac]) # If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we # check to see if the latter starts with the former and, upon success, compute # gcc_gxx_libcxx_include_dir as relative to the sysroot. gcc_gxx_libcxx_include_dir_add_sysroot=0 if test x${gcc_gxx_libcxx_include_dir} != x; then AC_DEFINE(ENABLE_STDLIB_OPTION, 1, [Define if the -stdlib= option should be enabled.]) else AC_DEFINE(ENABLE_STDLIB_OPTION, 0) fi # ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. if test x${gcc_gxx_libcxx_include_dir} = x; then if test x${enable_version_specific_runtime_libs} = xyes; then gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1' else libcxx_incdir='libc++_include/c++/$(version)/v1' if test x$host != x$target; then libcxx_incdir="$target_alias/$libcxx_incdir" fi gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir" fi elif test "${with_sysroot+set}" = set; then gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'` if test "${gcc_gxx_libcxx_without_sysroot}"; then gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}" gcc_gxx_libcxx_include_dir_add_sysroot=1 fi fi AC_ARG_WITH(cpp_install_dir, [AC_HELP_STRING([--with-cpp-install-dir=DIR], [install the user visible C preprocessor in DIR (relative to PREFIX) as well as PREFIX/bin])], [if test x$withval = xyes; then AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) elif test x$withval != xno; then cpp_install_dir=$withval fi]) # We would like to our source tree to be readonly. However when releases or # pre-releases are generated, the flex/bison generated files as well as the # various formats of manuals need to be included along with the rest of the # sources. Therefore we have --enable-generated-files-in-srcdir to do # just that. AC_MSG_CHECKING([whether to place generated files in the source directory]) dnl generated-files-in-srcdir is disabled by default AC_ARG_ENABLE(generated-files-in-srcdir, [AS_HELP_STRING([--enable-generated-files-in-srcdir], [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex])], generated_files_in_srcdir=$enableval, generated_files_in_srcdir=no) AC_MSG_RESULT($generated_files_in_srcdir) if test "$generated_files_in_srcdir" = "yes"; then GENINSRC='' else GENINSRC='#' fi AC_SUBST(GENINSRC) # ------------------- # Find default linker # ------------------- # With GNU ld AC_ARG_WITH(gnu-ld, [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])], gnu_ld_flag="$with_gnu_ld", gnu_ld_flag=no) case $target in *darwin*) ld64_flag=yes # Darwin can only use a ld64-compatible linker. dsymutil_flag=yes # Darwin uses dsymutil to link debug. ;; *) ld64_flag=no dsymutil_flag=no ;; esac # With pre-defined ld AC_ARG_WITH(ld, [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])], DEFAULT_LINKER="$with_ld") if test x"${DEFAULT_LINKER+set}" = x"set"; then if test ! -x "$DEFAULT_LINKER"; then AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gnu_ld_flag=yes elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then ld64_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", [Define to enable the use of a default linker.]) fi AC_MSG_CHECKING([whether a default linker was specified]) if test x"${DEFAULT_LINKER+set}" = x"set"; then if test x"$gnu_ld_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) else AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) fi else AC_MSG_RESULT(no) fi # With demangler in GNU ld AC_ARG_WITH(demangler-in-ld, [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])], demangler_in_ld="$with_demangler_in_ld", demangler_in_ld=yes) # Allow the user to specify a dsymutil executable (used on Darwin only, so far) AC_ARG_WITH(dsymutil, [AS_HELP_STRING([--with-dsymutil], [arrange to use the specified dsymutil (full pathname)])], DEFAULT_DSYMUTIL="$with_dsymutil") dsymutil_vers= if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then if test ! -x "$DEFAULT_DSYMUTIL"; then AC_MSG_ERROR([cannot execute: $DEFAULT_DSYMUTIL: check --with-dsymutil or env. var. DEFAULT_DSYMUTIL]) else if dsymutil_vers=`$DEFAULT_DSYMUTIL -v /dev/null 2>&1`; then dsymutil_flag=yes fi fi AC_DEFINE_UNQUOTED(DEFAULT_DSYMUTIL,"$DEFAULT_DSYMUTIL", [Define to enable the use of a default debug linker.]) fi AC_MSG_CHECKING([whether a default dsymutil was specified]) if test x"${DEFAULT_DSYMUTIL+set}" = x"set"; then AC_MSG_RESULT([yes ($DEFAULT_DSYMUTIL)]) else AC_MSG_RESULT(no) fi # ---------------------- # Find default assembler # ---------------------- # With GNU as AC_ARG_WITH(gnu-as, [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])], gas_flag="$with_gnu_as", gas_flag=no) AC_ARG_WITH(as, [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])], DEFAULT_ASSEMBLER="$with_as") if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test ! -x "$DEFAULT_ASSEMBLER"; then AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gas_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", [Define to enable the use of a default assembler.]) fi AC_MSG_CHECKING([whether a default assembler was specified]) if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test x"$gas_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) else AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) fi else AC_MSG_RESULT(no) fi # --------------- # Find C compiler # --------------- # If a non-executable a.out is present (e.g. created by GNU as above even if # invoked with -v only), the IRIX 6 native ld just overwrites the existing # file, even when creating an executable, so an execution test fails. # Remove possible default executable files to avoid this. # # FIXME: This really belongs into AC_PROG_CC and can be removed once # Autoconf includes it. rm -f a.out a.exe b.out # Find the native compiler AC_PROG_CC AC_PROG_CXX ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat]) ACX_PROG_GDC([-I"$srcdir"/d]) # Do configure tests with the C++ compiler, since that's what we build with. AC_LANG(C++) # Remove the -O2: for historical reasons, unless bootstrapping we prefer # optimizations to be activated explicitly by the toplevel. case "$CC" in */prev-gcc/xgcc*) ;; *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;; esac AC_SUBST(CFLAGS) AC_SUBST(CXXFLAGS) AC_SUBST(GDCFLAGS) # Determine PICFLAG for target gnatlib. GCC_PICFLAG_FOR_TARGET AC_SUBST(PICFLAG_FOR_TARGET) # ------------------------- # Check C compiler features # ------------------------- AC_USE_SYSTEM_EXTENSIONS AC_PROG_CPP AC_C_INLINE AC_SYS_LARGEFILE AC_CHECK_SIZEOF(ino_t) AC_CHECK_SIZEOF(dev_t) # Select the right stat being able to handle 64bit inodes, if needed. if test "$enable_largefile" != no; then case "$host, $build" in *-*-aix*,*|*,*-*-aix*) if test "$ac_cv_sizeof_ino_t" == "4" -a "$ac_cv_sizeof_dev_t" == 4; then AC_DEFINE(HOST_STAT_FOR_64BIT_INODES, stat64x, [Define which stat syscall is able to handle 64bit indodes.]) fi;; esac fi # sizeof(char) is 1 by definition. AC_CHECK_SIZEOF(void *) AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) GCC_STDINT_TYPES if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then AC_MSG_ERROR([uint64_t or int64_t not found]) fi # check what underlying integer type int64_t uses AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_STDINT_H #include #endif template struct X { }; template <> struct X { typedef long t; }; ]], [[X::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])]) if test "$ac_cv_int64_t_type" = "long"; then AC_DEFINE(INT64_T_IS_LONG, 1, [Define if int64_t uses long as underlying type.]) else AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_STDINT_H #include #endif template struct X { }; template <> struct X { typedef long long t; }; ]], [[X::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])]) fi AC_CACHE_CHECK(for std::swap in , ac_cv_std_swap_in_utility, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])]) if test $ac_cv_std_swap_in_utility = yes; then AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1, [Define if defines std::swap.]) fi # Check whether compiler is affected by placement new aliasing bug (PR 29286). # If the host compiler is affected by the bug, and we build with optimization # enabled (which happens e.g. when cross-compiling), the pool allocator may # get miscompiled. Use -fno-strict-aliasing to work around this problem. # Since there is no reliable feature check for the presence of this bug, # we simply use a GCC version number check. (This should never trigger for # stages 2 or 3 of a native bootstrap.) aliasing_flags= if test "$GCC" = yes; then saved_CXXFLAGS="$CXXFLAGS" # The following test compilation will succeed if and only if $CXX accepts # -fno-strict-aliasing *and* is older than GCC 4.3. CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([ #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) #error compiler not affected by placement new aliasing bug #endif ])], [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], [AC_MSG_RESULT([no])]) CXXFLAGS="$saved_CXXFLAGS" fi AC_SUBST(aliasing_flags) # --------------------- # Warnings and checking # --------------------- # Check $CC warning features (if it's GCC). # We want to use -pedantic, but we don't want warnings about # * 'long long' # * variadic macros # * overlong strings # * C++11 narrowing conversions in { } # So, we only use -pedantic if we can disable those warnings. # In stage 1, disable -Wformat warnings from old GCCs about new % codes AC_ARG_ENABLE(build-format-warnings, AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]), [],[enable_build_format_warnings=yes]) AS_IF([test $enable_build_format_warnings = no], [wf_opt=-Wno-format],[wf_opt=]) ACX_PROG_CXX_WARNING_OPTS( m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ], [-Wcast-qual $wf_opt])), [loose_warn]) ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ], [])), [c_loose_warn]) ACX_PROG_CXX_WARNING_OPTS( m4_quote(m4_do([-Wmissing-format-attribute ], [-Woverloaded-virtual])), [strict_warn]) ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC( m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], [-Wno-overlength-strings])), [strict_warn]) ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn]) # The above macros do nothing if the compiler is not GCC. However, the # Makefile has more goo to add other flags, so these variables are used # to enable warnings only for GCC. warn_cflags= warn_cxxflags= if test "x$GCC" = "xyes"; then warn_cflags='$(GCC_WARN_CFLAGS)' warn_cxxflags='$(GCC_WARN_CXXFLAGS)' fi AC_SUBST(warn_cflags) AC_SUBST(warn_cxxflags) # Disable exceptions and RTTI if building with g++ ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])), [noexception_flags]) # Enable expensive internal checks is_release= if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then is_release=yes fi AC_ARG_ENABLE(checking, [AS_HELP_STRING([[--enable-checking[=LIST]]], [enable expensive run-time checks. With LIST, enable only specific categories of checks. Categories are: yes,no,all,none,release. Flags are: assert,df,extra,fold,gc,gcac,gimple,misc, rtlflag,rtl,runtime,tree,valgrind,types])], [ac_checking_flags="${enableval}"],[ # Determine the default checks. if test x$is_release = x ; then ac_checking_flags=yes,extra else ac_checking_flags=release fi]) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," for check in release $ac_checking_flags do case $check in # these set all the flags to specific states yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ; ac_types_checking=1 ;; no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking= ; ac_tree_checking= ; ac_valgrind_checking= ; ac_types_checking= ;; all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ; ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ; ac_types_checking=1 ;; release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking=1 ; ac_tree_checking= ; ac_valgrind_checking= ; ac_types_checking= ;; # these enable particular checks assert) ac_assert_checking=1 ;; df) ac_df_checking=1 ;; extra) ac_extra_checking=1 ;; fold) ac_fold_checking=1 ;; gc) ac_gc_checking=1 ;; gcac) ac_gc_always_collect=1 ;; gimple) ac_gimple_checking=1 ;; misc) ac_checking=1 ;; rtl) ac_rtl_checking=1 ;; rtlflag) ac_rtlflag_checking=1 ;; runtime) ac_runtime_checking=1 ;; tree) ac_tree_checking=1 ;; types) ac_types_checking=1 ;; valgrind) ac_valgrind_checking=1 ;; *) AC_MSG_ERROR(unknown check category $check) ;; esac done IFS="$ac_save_IFS" nocommon_flag="" if test x$ac_checking != x ; then AC_DEFINE(CHECKING_P, 1, [Define to 0/1 if you want more run-time sanity checks. This one gets a grab bag of miscellaneous but relatively cheap checks.]) nocommon_flag=-fno-common else AC_DEFINE(CHECKING_P, 0) fi AC_SUBST(nocommon_flag) if test x$ac_extra_checking != x ; then AC_DEFINE(ENABLE_EXTRA_CHECKING, 1, [Define to 0/1 if you want extra run-time checking that might affect code generation.]) else AC_DEFINE(ENABLE_EXTRA_CHECKING, 0) fi if test x$ac_df_checking != x ; then AC_DEFINE(ENABLE_DF_CHECKING, 1, [Define if you want more run-time sanity checks for dataflow.]) fi if test x$ac_assert_checking != x ; then AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, [Define if you want assertions enabled. This is a cheap check.]) fi if test x$ac_gimple_checking != x ; then AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, [Define if you want operations on GIMPLE (the basic data structure of the high-level optimizers) to be checked for dynamic type safety at runtime. This is moderately expensive.]) fi GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) if test x$ac_runtime_checking != x ; then AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, [Define if you want runtime assertions enabled. This is a cheap check.]) fi if test x$ac_tree_checking != x ; then AC_DEFINE(ENABLE_TREE_CHECKING, 1, [Define if you want all operations on trees (the basic data structure of the front ends) to be checked for dynamic type safety at runtime. This is moderately expensive. ]) TREECHECKING=yes fi if test x$ac_types_checking != x ; then AC_DEFINE(ENABLE_TYPES_CHECKING, 1, [Define if you want all gimple types to be verified after gimplifiation. This is cheap. ]) fi AC_SUBST(TREECHECKING) if test x$ac_rtl_checking != x ; then AC_DEFINE(ENABLE_RTL_CHECKING, 1, [Define if you want all operations on RTL (the basic data structure of the optimizer and back end) to be checked for dynamic type safety at runtime. This is quite expensive.]) fi if test x$ac_rtlflag_checking != x ; then AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, [Define if you want RTL flag accesses to be checked against the RTL codes that are supported for each access macro. This is relatively cheap.]) fi if test x$ac_gc_checking != x ; then AC_DEFINE(ENABLE_GC_CHECKING, 1, [Define if you want the garbage collector to do object poisoning and other memory allocation checks. This is quite expensive.]) fi if test x$ac_gc_always_collect != x ; then AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, [Define if you want the garbage collector to operate in maximally paranoid mode, validating the entire heap and collecting garbage at every opportunity. This is extremely expensive.]) fi if test x$ac_fold_checking != x ; then AC_DEFINE(ENABLE_FOLD_CHECKING, 1, [Define if you want fold checked that it never destructs its argument. This is quite expensive.]) fi valgrind_path_defines= valgrind_command= dnl # This check AC_REQUIREs various stuff, so it *must not* be inside dnl # an if statement. This was the source of very frustrating bugs dnl # in converting to autoconf 2.5x! AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) # It is certainly possible that there's valgrind but no valgrind.h. # GCC relies on making annotations so we must have both. AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_valgrind_memcheck_h=yes], [gcc_cv_header_valgrind_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_memcheck_h=yes], [gcc_cv_header_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_memcheck_h) if test $gcc_cv_header_valgrind_memcheck_h = yes; then AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, [Define if valgrind's valgrind/memcheck.h header is installed.]) fi if test $gcc_cv_header_memcheck_h = yes; then AC_DEFINE(HAVE_MEMCHECK_H, 1, [Define if valgrind's memcheck.h header is installed.]) fi if test x$ac_valgrind_checking != x ; then AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) if test "x$valgrind_path" = "x" \ || (test $have_valgrind_h = no \ && test $gcc_cv_header_memcheck_h = no \ && test $gcc_cv_header_valgrind_memcheck_h = no); then AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) fi valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' valgrind_command="$valgrind_path -q" AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, [Define if you want to run subprograms and generated programs through valgrind (a memory checker). This is extremely expensive.]) fi AC_SUBST(valgrind_path_defines) AC_SUBST(valgrind_command) # Enable code coverage collection AC_ARG_ENABLE(coverage, [AS_HELP_STRING([[--enable-coverage[=LEVEL]]], [enable compiler's code coverage collection. Use to measure compiler performance and locate unused parts of the compiler. With LEVEL, specify optimization. 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AC_ARG_ENABLE(multilib, [AS_HELP_STRING([--enable-multilib], [enable library support for multiple ABIs])], [], [enable_multilib=yes]) AC_SUBST(enable_multilib) # Determine whether or not multiarch is enabled. 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AC_ARG_WITH(stack-clash-protection-guard-size, [AS_HELP_STRING([--with-stack-clash-protection-guard-size=size], [Set the default stack clash protection guard size for specific targets as a power of two in bytes.])], [DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0]) if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \ && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \ || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then AC_MSG_ERROR(m4_normalize([ Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \ Must be between $stk_clash_min and $stk_clash_max.])) fi AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE, [Define to larger than zero set the default stack clash protector size.]) # Enable __cxa_atexit for C++. AC_ARG_ENABLE(__cxa_atexit, [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])], [], []) # Enable C extension for decimal float if target supports it. GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, [Define to 1 to enable decimal float extension to C.]) # Use default_decimal_float for dependency. enable_decimal_float=$default_decimal_float bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, [Define to 1 to specify that we are using the BID decimal floating point format instead of DPD]) # Enable C extension for fixed-point arithmetic. AC_ARG_ENABLE(fixed-point, [AS_HELP_STRING([--enable-fixed-point], [enable fixed-point arithmetic extension to C])], [], [ case $target in arm*) enable_fixed_point=yes ;; mips*-*-*) enable_fixed_point=yes ;; loongarch*-*-*) enable_fixed_point=yes ;; *) AC_MSG_WARN([fixed-point is not supported for this target, ignored]) enable_fixed_point=no ;; esac ]) AC_SUBST(enable_fixed_point) fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, [Define to 1 to enable fixed-point arithmetic extension to C.]) # Enable threads # Pass with no value to take the default # Pass with a value to specify a thread package AC_ARG_ENABLE(threads, [AS_HELP_STRING([[--enable-threads[=LIB]]], [enable thread usage for target GCC, using LIB thread package])],, [enable_threads='']) AC_ARG_ENABLE(tls, [AS_HELP_STRING([--enable-tls], [enable or disable generation of tls code overriding the assembler check for tls support])], [ case $enable_tls in yes | no) ;; *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. 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AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) # See if makeinfo has been installed and is modern enough # that we can use it. ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, [GNU texinfo.* \([0-9][0-9.]*\)], [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) if test $gcc_cv_prog_makeinfo_modern = no; then AC_MSG_WARN([ *** Makeinfo is missing or too old. *** Info documentation will not be built.]) BUILD_INFO= else BUILD_INFO=info fi AC_SUBST(BUILD_INFO) # Is pod2man recent enough to regenerate manpages? AC_MSG_CHECKING([for recent Pod::Man]) if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then AC_MSG_RESULT(yes) GENERATED_MANPAGES=generated-manpages else AC_MSG_RESULT(no) GENERATED_MANPAGES= fi AC_SUBST(GENERATED_MANPAGES) MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" # How about lex? dnl Don't use AC_PROG_LEX; we insist on flex. dnl LEXLIB is not useful in gcc. AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) # Bison? AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) # Binutils are not build modules, unlike bison/flex/makeinfo. So we # check for build == host before using them. # NM if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ && test -d ../binutils ; then NM='${objdir}/../binutils/nm-new' else AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) fi # AR if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ && test -d ../binutils ; then AR='${objdir}/../binutils/ar' else AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) fi # The jit documentation looks better if built with sphinx, but can be # built with texinfo if sphinx is not available. # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly. AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo) # -------------------- # Checks for C headers # -------------------- # Need to reject headers which give warnings, so that the -Werror bootstrap # works later. *sigh* This needs to come before all header checks. AC_PROG_CPP_WERROR AC_HEADER_STDC AC_HEADER_TIME ACX_HEADER_STRING AC_HEADER_SYS_WAIT AC_HEADER_TIOCGWINSZ AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \ sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \ direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) # Check for thread headers. 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Equivalent to --with-zstd-include=PATH/include plus --with-zstd-lib=PATH/lib])]) AC_ARG_WITH(zstd-include, [AS_HELP_STRING([--with-zstd-include=PATH], [specify directory for installed zstd include files])]) AC_ARG_WITH(zstd-lib, [AS_HELP_STRING([--with-zstd-lib=PATH], [specify directory for the installed zstd library])]) case "x$with_zstd" in x) ;; xno) ZSTD_INCLUDE= ZSTD_LIB= ;; *) ZSTD_INCLUDE=$with_zstd/include ZSTD_LIB=$with_zstd/lib ;; esac if test "x$with_zstd" != xno; then if test "x$with_zstd_include" != x; then ZSTD_INCLUDE=$with_zstd_include fi if test "x$with_zstd_lib" != x; then ZSTD_LIB=$with_zstd_lib fi if test "x$ZSTD_INCLUDE" != x \ && test "x$ZSTD_INCLUDE" != xno; then ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE fi if test "x$ZSTD_LIB" != x \ && test "x$ZSTD_LIB" != xno; then ZSTD_LDFLAGS=-L$ZSTD_LIB fi CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS" LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS" AC_MSG_CHECKING(for zstd.h) AC_CACHE_VAL(gcc_cv_header_zstd_h, # We require version 1.3.0 or later. This is the first version that has # ZSTD_getFrameContentSize. [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( [[#include #if ZSTD_VERSION_NUMBER < 10300 #error "need zstd 1.3.0 or better" #endif]])], [gcc_cv_header_zstd_h=yes], [gcc_cv_header_zstd_h=no])]) AC_MSG_RESULT($gcc_cv_header_zstd_h) if test $gcc_cv_header_zstd_h = yes; then AC_DEFINE(HAVE_ZSTD_H, 1, [Define if you have a working header file.]) elif test "x$with_zstd" != x; then as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5 fi # LTO can use zstd compression algorithm save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(ZSTD_compress, zstd) ZSTD_LIB="$LIBS" LIBS="$save_LIBS" AC_SUBST(ZSTD_LIB) fi dnl Disabled until we have a complete test for buggy enum bitfields. dnl gcc_AC_C_ENUM_BF_UNSIGNED define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl putchar_unlocked putc_unlocked) AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ popen sysconf strsignal getrusage nl_langinfo \ gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \ gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat) if test x$ac_cv_func_mbstowcs = xyes; then AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include int main() { mbstowcs(0, "", 0); return 0; }]])], [gcc_cv_func_mbstowcs_works=yes], [gcc_cv_func_mbstowcs_works=no], [gcc_cv_func_mbstowcs_works=yes])]) if test x$gcc_cv_func_mbstowcs_works = xyes; then AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, [Define this macro if mbstowcs does not crash when its first argument is NULL.]) fi fi AC_CHECK_TYPE(ssize_t, int) AC_CHECK_TYPE(caddr_t, char *) AC_CHECK_TYPE(sighander_t, AC_DEFINE(HAVE_SIGHANDLER_T, 1, [Define if defines sighandler_t]), ,signal.h) GCC_AC_FUNC_MMAP_BLACKLIST case "${host}" in *-*-*vms*) # Under VMS, vfork works very differently than on Unix. The standard test # won't work, and it isn't easily adaptable. It makes more sense to # just force it. ac_cv_func_vfork_works=yes ;; esac AC_FUNC_FORK AM_ICONV # Until we have in-tree GNU iconv: LIBICONV_DEP= if test -f "$LTLIBICONV"; then LIBICONV_DEP=$LTLIBICONV fi AC_SUBST(LIBICONV_DEP) AM_LC_MESSAGES AM_LANGINFO_CODESET # We will need to find libiberty.h and ansidecl.h saved_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" saved_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the # normal autoconf function for these. But force definition of # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre # basename handling in libiberty.h. AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ #undef HAVE_DECL_BASENAME #define HAVE_DECL_BASENAME 1 #include "ansidecl.h" #include "system.h"]) gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \ madvise stpcpy strnlen strsignal strverscmp \ strtol strtoul strtoll strtoull setenv unsetenv \ errno snprintf vsnprintf vasprintf malloc realloc calloc \ free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[ #include "ansidecl.h" #include "system.h"]) gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ]) gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_MALLOC_H #include #endif ]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], [Define to `long' if doesn't define.])]) # On AIX 5.2, conflicts with , as both define incompatible # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname # in collect2.cc, isn't visible, but the configure test below needs # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. gcc_AC_CHECK_DECLS(ldgetname, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_LDFCN_H #undef FREAD #undef FWRITE #include #endif ]) gcc_AC_CHECK_DECLS(times, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_TIMES_H #include #endif ]) gcc_AC_CHECK_DECLS(sigaltstack, , ,[ #include "ansidecl.h" #include "system.h" #include ]) # More time-related stuff. AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_TIMES_H #include #endif ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) if test $ac_cv_struct_tms = yes; then AC_DEFINE(HAVE_STRUCT_TMS, 1, [Define if defines struct tms.]) fi # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. # revisit after autoconf 2.50. AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) if test $gcc_cv_type_clock_t = yes; then AC_DEFINE(HAVE_CLOCK_T, 1, [Define if defines clock_t.]) fi # Check if F_SETLKW is supported by fcntl. AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ struct flock fl; fl.l_whence = 0; fl.l_start = 0; fl.l_len = 0; fl.l_pid = 0; return fcntl (1, F_SETLKW, &fl);]])], [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])]) if test $ac_cv_f_setlkw = yes; then AC_DEFINE(HOST_HAS_F_SETLKW, 1, [Define if F_SETLKW supported by fcntl.]) fi # Check if O_CLOEXEC is defined by fcntl AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])], [ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])]) if test $ac_cv_o_cloexec = yes; then AC_DEFINE(HOST_HAS_O_CLOEXEC, 1, [Define if O_CLOEXEC supported by fcntl.]) fi # C++ Modules would like some networking features to provide the mapping # server. You can still use modules without them though. # The following network-related checks could probably do with some # Windows and other non-linux defenses and checking. # Local socket connectivity wants AF_UNIX networking # Check for AF_UNIX networking AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]],[[ sockaddr_un un; un.sun_family = AF_UNSPEC; int fd = socket (AF_UNIX, SOCK_STREAM, 0); connect (fd, (sockaddr *)&un, sizeof (un));]])], [ac_cv_af_unix=yes], [ac_cv_af_unix=no])]) if test $ac_cv_af_unix = yes; then AC_DEFINE(HAVE_AF_UNIX, 1, [Define if AF_UNIX supported.]) fi # Remote socket connectivity wants AF_INET6 networking # Check for AF_INET6 networking AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]],[[ sockaddr_in6 in6; in6.sin6_family = AF_UNSPEC; struct addrinfo *addrs = 0; struct addrinfo hints; hints.ai_flags = 0; hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = 0; hints.ai_canonname = 0; hints.ai_addr = 0; hints.ai_next = 0; int e = getaddrinfo ("localhost", 0, &hints, &addrs); const char *str = gai_strerror (e); freeaddrinfo (addrs); int fd = socket (AF_INET6, SOCK_STREAM, 0); connect (fd, (sockaddr *)&in6, sizeof (in6));]])], [ac_cv_af_inet6=yes], [ac_cv_af_inet6=no])]) if test $ac_cv_af_inet6 = yes; then AC_DEFINE(HAVE_AF_INET6, 1, [Define if AF_INET6 supported.]) fi # Check if _LK_LOCK is supported by _locking AC_CACHE_CHECK(for _LK_LOCK, ac_cv_lk_lock, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[ int fd; return _locking (fd, _LK_LOCK, 0);]])], [ac_cv_lk_lock=yes],[ac_cv_lk_lock=no])]) if test $ac_cv_lk_lock = yes; then AC_DEFINE(HOST_HAS_LK_LOCK, 1, [Define if _LK_LOC supported by _locking.]) fi # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. CFLAGS="$saved_CFLAGS" CXXFLAGS="$saved_CXXFLAGS" # mkdir takes a single argument on some systems. gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG # File extensions manext='.1' objext='.o' AC_SUBST(manext) AC_SUBST(objext) # With Setjmp/Longjmp based exception handling. AC_ARG_ENABLE(sjlj-exceptions, [AS_HELP_STRING([--enable-sjlj-exceptions], [arrange to use setjmp/longjmp exception handling])], [case $target in *-*-hpux10*) if test $enableval != yes; then AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) enableval=yes fi ;; esac force_sjlj_exceptions=yes], [case $target in *-*-hpux10*) force_sjlj_exceptions=yes enableval=yes ;; lm32*-*-*) force_sjlj_exceptions=yes enableval=yes ;; *) force_sjlj_exceptions=no ;; esac]) if test $force_sjlj_exceptions = yes; then sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, [Define 0/1 to force the choice for exception handling model.]) fi # -------------------------------------------------------- # Build, host, and target specific configuration fragments # -------------------------------------------------------- # Collect build-machine-specific information. . ${srcdir}/config.build || exit 1 # Collect host-machine-specific information. . ${srcdir}/config.host || exit 1 target_gtfiles= # Collect target-machine-specific information. . ${srcdir}/config.gcc || exit 1 extra_objs="${host_extra_objs} ${extra_objs}" extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" # Default the target-machine variables that were not explicitly set. if test x"$tm_file" = x then tm_file=$cpu_type/$cpu_type.h; fi if test x"$extra_headers" = x then extra_headers=; fi if test x$md_file = x then md_file=$cpu_type/$cpu_type.md; fi if test x$out_file = x then out_file=$cpu_type/$cpu_type.cc; fi if test x"$tmake_file" = x then tmake_file=$cpu_type/t-$cpu_type fi # Support --enable-initfini-array. if test x$enable_initfini_array != xno; then tm_file="${tm_file} initfini-array.h" fi if test x"$dwarf2" = xyes then tm_file="$tm_file tm-dwarf2.h" fi # Say what files are being used for the output code and MD file. echo "Using \`$srcdir/config/$out_file' for machine-specific logic." echo "Using \`$srcdir/config/$md_file' as machine description file." # If any of the xm_file variables contain nonexistent files, warn # about them and drop them. bx= for x in $build_xm_file; do if test -f $srcdir/config/$x then bx="$bx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done build_xm_file="$bx" hx= for x in $host_xm_file; do if test -f $srcdir/config/$x then hx="$hx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done host_xm_file="$hx" tx= for x in $xm_file; do if test -f $srcdir/config/$x then tx="$tx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done xm_file="$tx" count=a for f in $tm_file; do count=${count}x done if test $count = ax; then echo "Using \`$srcdir/config/$tm_file' as target machine macro file." else echo "Using the following target machine macro files:" for f in $tm_file; do echo " $srcdir/config/$f" done fi if test x$use_long_long_for_widest_fast_int = xyes; then AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, [Define to 1 if the 'long long' type is wider than 'long' but still efficiently supported by the host hardware.]) fi gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.]) gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.]) count=a for f in $host_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." else echo "Using the following host machine macro files:" for f in $host_xm_file; do echo " $srcdir/config/$f" done fi echo "Using ${out_host_hook_obj} for host machine hooks." if test "$host_xm_file" != "$build_xm_file"; then count=a for f in $build_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." else echo "Using the following build machine macro files:" for f in $build_xm_file; do echo " $srcdir/config/$f" done fi fi if test -n "$configured_native_system_header_dir"; then native_system_header_dir=$configured_native_system_header_dir fi NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir" AC_SUBST(NATIVE_SYSTEM_HEADER_DIR) case ${host} in powerpc*-*-darwin*) AC_CACHE_CHECK([whether mcontext_t fields have underscores], gcc_cv_mcontext_underscores, AC_COMPILE_IFELSE([AC_LANG_SOURCE([ #include #include #include int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } ])], gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) if test $gcc_cv_mcontext_underscores = yes; then AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl [mcontext_t fields start with __]) fi ;; esac # --------- # Threading # --------- # Check if a valid thread package case ${enable_threads} in "" | no) # No threads target_thread_file='single' ;; yes) # default target_thread_file='single' ;; aix | dce | lynx | mipssde | posix | rtems | \ single | tpf | vxworks | win32) target_thread_file=${enable_threads} ;; *) echo "${enable_threads} is an unknown thread package" 1>&2 exit 1 ;; esac if test x${thread_file} = x; then # No thread file set by target-specific clauses in config.gcc, # so use file chosen by default logic above thread_file=${target_thread_file} fi # -------- # UNSORTED # -------- use_cxa_atexit=no if test x$enable___cxa_atexit = xyes || \ test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then if test x$host = x$target; then case $host in # mingw32 doesn't have __cxa_atexit but uses atexit registration # keyed to flag_use_cxa_atexit *-*-mingw32*) use_cxa_atexit=yes ;; powerpc-ibm-aix*) use_cxa_atexit=yes ;; *) AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], [echo "__cxa_atexit can't be enabled on this target"]) ;; esac else # We can't check for __cxa_atexit when building a cross, so assume # it is available use_cxa_atexit=yes fi if test x$use_cxa_atexit = xyes; then AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, [Define if you want to use __cxa_atexit, rather than atexit, to register C++ destructors for local statics and global objects. This is essential for fully standards-compliant handling of destructors, but requires __cxa_atexit in libc.]) fi fi # Look for a file containing extra machine modes. if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then extra_modes_file='$(srcdir)'/config/${extra_modes} AC_SUBST(extra_modes_file) AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", [Define to the name of a file containing a list of extra machine modes for this architecture.]) fi # Convert extra_options into a form suitable for Makefile use. extra_opt_files= all_opt_files= for f in $extra_options; do extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" all_opt_files="$all_opt_files $srcdir/config/$f" done AC_SUBST(extra_opt_files) # auto-host.h is the file containing items generated by autoconf and is # the first file included by config.h. # If host=build, it is correct to have bconfig include auto-host.h # as well. If host!=build, we are in error and need to do more # work to find out the build config parameters. if test x$host = x$build then build_auto=auto-host.h HAVE_AUTO_BUILD='# ' else # We create a subdir, then run autoconf in the subdir. # To prevent recursion we set host and build for the new # invocation of configure to the build for this invocation # of configure. tempdir=build.$$ rm -rf $tempdir mkdir $tempdir cd $tempdir case ${srcdir} in /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; *) realsrcdir=../${srcdir};; esac # Clearing GMPINC is necessary to prevent host headers being # used by the build compiler. Defining GENERATOR_FILE stops # system.h from including gmp.h. CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \ LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \ GMPINC="" CPPFLAGS="${CPPFLAGS_FOR_BUILD} -DGENERATOR_FILE" \ ${realsrcdir}/configure \ --enable-languages=${enable_languages-all} \ ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \ ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \ --target=$target_alias --host=$build_alias \ --build=$build_alias || exit # retaining $tempdir # We just finished tests for the build machine, so rename # the file auto-build.h in the gcc directory. mv auto-host.h ../auto-build.h cd .. rm -rf $tempdir build_auto=auto-build.h HAVE_AUTO_BUILD= fi AC_SUBST(build_subdir) AC_SUBST(HAVE_AUTO_BUILD) tm_file="${tm_file} defaults.h" tm_p_file="${tm_p_file} tm-preds.h" host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" # We don't want ansidecl.h in target files, write code there in ISO/GNU C. # put this back in temporarily. xm_file="auto-host.h ansidecl.h ${xm_file}" # -------- # UNSORTED # -------- changequote(,)dnl # Compile in configure arguments. if test -f configargs.h ; then # Being re-configured. gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'` if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" fi else gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" fi # Double all backslashes and backslash all quotes to turn # gcc_config_arguments into a C string. sed -e 's/\\/\\\\/g; s/"/\\"/g' <conftest.out $gcc_config_arguments EOF gcc_config_arguments_str=`cat conftest.out` rm -f conftest.out cat > configargs.h < plugin-version.h <target assembler and hope that it will have the same features # as the host->target assembler we'll be using. gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas m4_pattern_allow([AS_FOR_TARGET])dnl AS_VAR_SET_IF(gcc_cv_as,, [ if test -x "$DEFAULT_ASSEMBLER"; then gcc_cv_as="$DEFAULT_ASSEMBLER" elif test -f $gcc_cv_as_gas_srcdir/configure.ac \ && test -f ../gas/Makefile \ && test x$build = x$host; then gcc_cv_as=../gas/as-new$build_exeext elif test -x as$build_exeext; then # Build using assembler in the current directory. gcc_cv_as=./as$build_exeext elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then gcc_cv_as="$AS_FOR_TARGET" else AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) fi]) ORIGINAL_AS_FOR_TARGET=$gcc_cv_as AC_SUBST(ORIGINAL_AS_FOR_TARGET) case "$ORIGINAL_AS_FOR_TARGET" in ./as | ./as$build_exeext) ;; *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; esac default_ld= AC_ARG_ENABLE(ld, [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], [case "${enableval}" in no) default_ld=ld.gold ;; esac]) install_gold_as_default=no AC_ARG_ENABLE(gold, [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], [case "${enableval}" in default) install_gold_as_default=yes ;; yes) if test x${default_ld} != x; then install_gold_as_default=yes fi ;; no) ;; *) AC_MSG_ERROR([invalid --enable-gold argument]) ;; esac]) # Identify the linker which will work hand-in-glove with the newly # built GCC, so that we can examine its features. This is the linker # which will be driven by the driver program. # # If build != host, and we aren't building gas in-tree, we identify a # build->target linker and hope that it will have the same features # as the host->target linker we'll be using. gcc_cv_gld_major_version= gcc_cv_gld_minor_version= gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd AS_VAR_SET_IF(gcc_cv_ld,, [ if test -x "$DEFAULT_LINKER"; then gcc_cv_ld="$DEFAULT_LINKER" elif test $install_gold_as_default = yes \ && test -f $gcc_cv_ld_gold_srcdir/configure.ac \ && test -f ../gold/Makefile \ && test x$build = x$host; then gcc_cv_ld=../gold/ld-new$build_exeext elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \ && test -f ../ld/Makefile \ && test x$build = x$host; then gcc_cv_ld=../ld/ld-new$build_exeext elif test -x collect-ld$build_exeext; then # Build using linker in the current directory. gcc_cv_ld=./collect-ld$build_exeext elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then gcc_cv_ld="$LD_FOR_TARGET" else AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) fi]) ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"` # if the PLUGIN_LD is set ld-new, just have it as ld # as that is the installed named. if test x$PLUGIN_LD_SUFFIX = xld-new \ || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then PLUGIN_LD_SUFFIX=ld fi AC_ARG_WITH(plugin-ld, [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])], [if test x"$withval" != x; then ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" PLUGIN_LD_SUFFIX="$withval" fi]) AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker]) # Check to see if we are using gold instead of ld AC_MSG_CHECKING(whether we are using gold) ld_is_gold=no if test x$gcc_cv_ld != x; then if $gcc_cv_ld --version 2>/dev/null | sed 1q \ | grep "GNU gold" > /dev/null; then ld_is_gold=yes fi fi AC_MSG_RESULT($ld_is_gold) # Check to see if we are using mold instead of ld AC_MSG_CHECKING(whether we are using mold) ld_is_mold=no if test x$gcc_cv_ld != x; then if $gcc_cv_ld --version 2>/dev/null | sed 1q \ | grep "mold" > /dev/null; then ld_is_mold=yes fi fi AC_MSG_RESULT($ld_is_mold) AC_MSG_CHECKING(gold linker with split stack support as non default) # Check to see if default ld is not gold, but gold is # available and has support for split stack. If gcc was configured # with gold then no checking is done. # if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then # For platforms other than powerpc64*, enable as appropriate. gold_non_default=no ld_gold=`which ${gcc_cv_ld}.gold` # Make sure this gold has minimal split stack support if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then ld_vers=`$ld_gold --version | sed 1q` gold_vers=`echo $ld_vers | sed -n \ -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` case $target in # check that the gold version contains the complete split stack support # on powerpc64 big and little endian powerpc64*-*-*) case "$gold_vers" in 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes ;; *) gold_non_default=no ;; esac ;; esac fi if test $gold_non_default = yes; then AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, [Define if the gold linker supports split stack and is available as a non-default]) fi fi AC_MSG_RESULT($gold_non_default) ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld AC_SUBST(ORIGINAL_LD_FOR_TARGET) case "$ORIGINAL_LD_FOR_TARGET" in ./collect-ld | ./collect-ld$build_exeext) ;; *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; esac AC_MSG_CHECKING(what linker to use) if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \ || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then # Single tree build which includes ld. We want to prefer it # over whatever linker top-level may have detected, since # we'll use what we're building after installation anyway. AC_MSG_RESULT(newly built ld) in_tree_ld=yes in_tree_ld_is_elf=no if (grep 'EMUL = .*elf' ../ld/Makefile \ || grep 'EMUL = .*linux' ../ld/Makefile \ || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then in_tree_ld_is_elf=yes elif test "$ld_is_gold" = yes; then in_tree_ld_is_elf=yes fi for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in do changequote(,)dnl gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f` if test x$gcc_cv_gld_version != x; then break fi done case $gcc_cv_gld_version in VERSION=[0-9]*) ;; changequote([,])dnl *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;; changequote(,)dnl esac gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` changequote([,])dnl ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext else AC_MSG_RESULT($gcc_cv_ld) in_tree_ld=no gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext` ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext fi AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET) AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET) # Figure out what nm we will be using. gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils AS_VAR_SET_IF(gcc_cv_nm,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then gcc_cv_nm=../binutils/nm-new$build_exeext elif test -x nm$build_exeext; then gcc_cv_nm=./nm$build_exeext elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then gcc_cv_nm="$NM_FOR_TARGET" else AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) fi]) AC_MSG_CHECKING(what nm to use) if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built nm) in_tree_nm=yes else AC_MSG_RESULT($gcc_cv_nm) in_tree_nm=no fi ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm AC_SUBST(ORIGINAL_NM_FOR_TARGET) case "$ORIGINAL_NM_FOR_TARGET" in ./nm | ./nm$build_exeext) ;; *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; esac # Figure out what objdump we will be using. AS_VAR_SET_IF(gcc_cv_objdump,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then # Single tree build which includes binutils. gcc_cv_objdump=../binutils/objdump$build_exeext elif test -x objdump$build_exeext; then gcc_cv_objdump=./objdump$build_exeext elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then gcc_cv_objdump="$OBJDUMP_FOR_TARGET" else AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) fi]) AC_MSG_CHECKING(what objdump to use) if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built objdump) elif test x$gcc_cv_objdump = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_objdump) fi # Figure out what readelf we will be using. AS_VAR_SET_IF(gcc_cv_readelf,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then # Single tree build which includes binutils. gcc_cv_readelf=../binutils/readelf$build_exeext elif test -x readelf$build_exeext; then gcc_cv_readelf=./readelf$build_exeext elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then gcc_cv_readelf="$READELF_FOR_TARGET" else AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET) fi]) AC_MSG_CHECKING(what readelf to use) if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built readelf) elif test x$gcc_cv_readelf = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_readelf) fi # Figure out what otool we will be using. AS_VAR_SET_IF(gcc_cv_otool,, [ if test -x otool$build_exeext; then gcc_cv_otool=./otool$build_exeext elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then gcc_cv_otool="$OTOOL_FOR_TARGET" else AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET) fi]) AC_MSG_CHECKING(what otool to use) if test x$gcc_cv_otool = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_otool) fi # Figure out the dsymutil we will use. AS_VAR_SET_IF(gcc_cv_dsymutil,, [ if test -x "$DEFAULT_DSYMUTIL"; then gcc_cv_dsymutil="$DEFAULT_DSYMUTIL" elif test -x dsymutil$build_exeext; then gcc_cv_dsymutil=./dsymutil$build_exeext elif ( set dummy $DSYMUTIL_FOR_TARGET; test -x $[2] ); then gcc_cv_dsymutil=$DSYMUTIL_FOR_TARGET elif ( set dummy $DSYMUTIL; test -x $[2] ); then gcc_cv_dsymutil=$DSYMUTIL else AC_PATH_PROG(gcc_cv_dsymutil, $DSYMUTIL_FOR_TARGET) fi]) ORIGINAL_DSYMUTIL_FOR_TARGET=$gcc_cv_dsymutil AC_SUBST(ORIGINAL_DSYMUTIL_FOR_TARGET) case "$ORIGINAL_DSYMUTIL_FOR_TARGET" in ./dsymutil | ./dsymutil$build_exeext) ;; *) AC_CONFIG_FILES(dsymutil:exec-tool.in, [chmod +x dsymutil]) ;; esac # Figure out what assembler alignment features are present. gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,, [.balign 4 .p2align 2],, [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, [Define if your assembler supports .balign and .p2align.])]) gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,, [.p2align 4,,7],, [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, [Define if your assembler supports specifying the maximum number of bytes to skip when using the GAS .p2align command.])]) gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,, [.literal16],, [AC_DEFINE(HAVE_GAS_LITERAL16, 1, [Define if your assembler supports .literal16.])]) gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,, [conftest_label1: .word 0 .subsection -1 conftest_label2: .word 0 .previous], [if test x$gcc_cv_nm != x; then $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 then : else gcc_cv_as_subsection_m1=yes fi rm -f conftest.nm1 conftest.nm2 fi], [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, [Define if your assembler supports .subsection and .subsection -1 starts emitting at the beginning of your section.])]) gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,, [ .weak foobar],, [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,, [ .weakref foobar, barfnot],, [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,, [ .SPACE $TEXT$ .NSUBSPA $CODE$,COMDAT],, [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) # .hidden needs to be supported in both the assembler and the linker, # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. # This is irritatingly difficult to feature test for; we have to check the # date string after the version number. If we've got an in-tree # ld, we don't know its patchlevel version, so we set the baseline at 2.13 # to be safe. # The gcc_GAS_CHECK_FEATURE call just sets a cache variable. case "${target}" in *-*-aix*) conftest_s=' .globl foobar,hidden' ;; *) conftest_s=' .hidden foobar foobar:' ;; esac gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,, [$conftest_s]) case "${target}" in *-*-darwin*) # Darwin as has some visibility support, though with a different syntax. gcc_cv_as_hidden=yes ;; esac # gnu_indirect_function type is an extension proposed at # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime # selection of function implementation AC_ARG_ENABLE(gnu-indirect-function, [AS_HELP_STRING([--enable-gnu-indirect-function], [enable the use of the @gnu_indirect_function to glibc systems])], [case $enable_gnu_indirect_function in yes | no) ;; *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. Valid choices are 'yes' and 'no'.]) ;; esac], [enable_gnu_indirect_function="$default_gnu_indirect_function"]) case "${target}" in riscv*-*-linux*) AC_MSG_CHECKING(linker ifunc IRELATIVE support) cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \ && $gcc_cv_readelf --relocs --wide conftest \ | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then enable_gnu_indirect_function=yes fi rm -f conftest conftest.o conftest.s AC_MSG_RESULT($enable_gnu_indirect_function) ;; esac gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif, [Define if your system supports gnu indirect functions.]) changequote(,)dnl if test $in_tree_ld != yes ; then ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then if test x"$ld_is_gold" = xyes; then # GNU gold --version looks like this: # # GNU gold (GNU Binutils 2.21.51.20110225) 1.11 # # We extract the binutils version which is more familiar and specific # than the gold version. ld_vers=`echo $ld_ver | sed -n \ -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` else # GNU ld --version looks like this: # # GNU ld (GNU Binutils) 2.21.51.20110225 ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` fi ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'` ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` else case "${target}" in *-*-solaris2*) # Solaris 2 ld -V output looks like this for a regular version: # # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 # # but test versions add stuff at the end: # # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 # # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version # numbers can be used in ld.so.1 feature checks even if a different # linker is configured. ld_ver=`$gcc_cv_ld -V 2>&1` if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` fi ;; esac fi fi changequote([,])dnl AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, [[if test $in_tree_ld = yes ; then gcc_cv_ld_hidden=no if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_hidden=yes fi else gcc_cv_ld_hidden=yes if test x"$ld_is_gold" = xyes; then : elif test x"$ld_is_mold" = xyes; then : elif echo "$ld_ver" | grep GNU > /dev/null; then if test 0"$ld_date" -lt 20020404; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2002-04-04, fail gcc_cv_ld_hidden=no elif test -z "$ld_vers"; then # If there was no date string nor ld version number, something is wrong gcc_cv_ld_hidden=no else test -z "$ld_vers_patch" && ld_vers_patch=0 if test "$ld_vers_major" -lt 2; then gcc_cv_ld_hidden=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then gcc_cv_ld_hidden="no" elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then gcc_cv_ld_hidden=no fi fi fi else case "${target}" in *-*-aix[789]*) gcc_cv_ld_hidden=yes ;; *-*-darwin*) # Darwin ld has some visibility support. gcc_cv_ld_hidden=yes ;; hppa64*-*-hpux* | ia64*-*-hpux*) gcc_cv_ld_hidden=yes ;; *-*-solaris2*) # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but # .symbolic was only added in Solaris 9 12/02. gcc_cv_ld_hidden=yes ;; *) gcc_cv_ld_hidden=no ;; esac fi fi]]) libgcc_visibility=no AC_SUBST(libgcc_visibility) GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then libgcc_visibility=yes AC_DEFINE(HAVE_GAS_HIDDEN, 1, [Define if your assembler and linker support .hidden.]) fi AC_MSG_CHECKING(linker read-only and read-write section mixing) gcc_cv_ld_ro_rw_mix=unknown if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_ro_rw_mix=read-write fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then echo '.section myfoosect, "a"' > conftest1.s echo '.section myfoosect, "aw"' > conftest2.s echo '.byte 1' >> conftest2.s echo '.section myfoosect, "a"' > conftest3.s echo '.byte 0' >> conftest3.s if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ conftest2.o conftest3.o > /dev/null 2>&1; then gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ | sed -e '/myfoosect/!d' -e N` if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then gcc_cv_ld_ro_rw_mix=read-only else gcc_cv_ld_ro_rw_mix=read-write fi fi fi changequote(,)dnl rm -f conftest.* conftest[123].* changequote([,])dnl fi if test x$gcc_cv_ld_ro_rw_mix = xread-write; then AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, [Define if your linker links a mix of read-only and read-write sections into a read-write section.]) fi AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) gcc_AC_INITFINI_ARRAY # Check if we have .[us]leb128, and support symbol arithmetic with it. # Older versions of GAS and some non-GNU assemblers, have a bugs handling # these directives, even when they appear to accept them. gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,, [ .data .uleb128 L2 - L1 L1: .uleb128 1280 .sleb128 -1010 L2: .uleb128 0x8000000000000000 ], [[ if test "x$gcc_cv_objdump" != x; then if $gcc_cv_objdump -s conftest.o 2>/dev/null \ | grep '04800a8e 78808080 80808080 808001' >/dev/null; then gcc_cv_as_leb128=yes fi elif test "x$gcc_cv_otool" != x; then if $gcc_cv_otool -d conftest.o 2>/dev/null \ | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then gcc_cv_as_leb128=yes fi else # play safe, assume the assembler is broken. : fi ]], [AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .sleb128 and .uleb128.])], [AC_DEFINE(HAVE_AS_LEB128, 0, [Define if your assembler supports .sleb128 and .uleb128.])]) # Determine if an .eh_frame section is read-only. gcc_fn_eh_frame_ro () { $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \ $gcc_cv_objdump -h conftest.o 2>/dev/null | \ sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null } # Check if we have assembler support for unwind directives. gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,, [ .text .cfi_startproc .cfi_offset 0, 0 .cfi_same_value 1 .cfi_def_cfa 1, 2 .cfi_escape 1, 2, 3, 4, 5 .cfi_endproc], [case "$target" in *-*-solaris*) # If the linker used on Solaris (like Sun ld) isn't capable of merging # read-only and read-write sections, we need to make sure that the # assembler used emits read-write .eh_frame sections. if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then gcc_cv_as_cfi_directive=yes elif test "x$gcc_cv_objdump" = x; then # No objdump, err on the side of caution. gcc_cv_as_cfi_directive=no else if test x$gas = xyes; then as_32_opt="--32" as_64_opt="--64" else as_32_opt="-m32" as_64_opt="-m64" fi case "$target" in sparc*-*-solaris2.*) # On Solaris/SPARC, .eh_frame sections should always be read-write. if gcc_fn_eh_frame_ro $as_32_opt \ || gcc_fn_eh_frame_ro $as_64_opt; then gcc_cv_as_cfi_directive=no else gcc_cv_as_cfi_directive=yes fi ;; i?86-*-solaris2.* | x86_64-*-solaris2.*) # On Solaris/x86, make sure that GCC and assembler agree on using # read-only .eh_frame sections for 64-bit. if gcc_fn_eh_frame_ro $as_32_opt; then gcc_cv_as_cfi_directive=no elif gcc_fn_eh_frame_ro $as_64_opt; then gcc_cv_as_cfi_directive=yes else gcc_cv_as_cfi_directive=no fi ;; esac fi ;; *-*-*) gcc_cv_as_cfi_directive=yes ;; esac]) if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,, [ .text .cfi_startproc .cfi_adjust_cfa_offset 64 .skip 75040, 0 .cfi_adjust_cfa_offset 128 .cfi_endproc], [[ if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then gcc_cv_as_cfi_advance_working=yes fi ]]) else # no objdump, err on the side of caution gcc_cv_as_cfi_advance_working=no fi GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, [`if test $gcc_cv_as_cfi_directive = yes \ && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports CFI directives.]) GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) gcc_GAS_CHECK_FEATURE([cfi personality directive], gcc_cv_as_cfi_personality_directive,, [ .text .cfi_startproc .cfi_personality 0, symbol .cfi_endproc]) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports .cfi_personality.]) gcc_GAS_CHECK_FEATURE([cfi sections directive], gcc_cv_as_cfi_sections_directive,, [ .text .cfi_sections .debug_frame, .eh_frame .cfi_startproc .cfi_endproc], [case $target_os in win32 | pe | cygwin* | mingw32*) # Need to check that we generated the correct relocation for the # .debug_frame section. This was fixed for binutils 2.21. gcc_cv_as_cfi_sections_directive=no if test "x$gcc_cv_objdump" != x; then if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ grep secrel > /dev/null; then gcc_cv_as_cfi_sections_directive=yes fi fi ;; *) gcc_cv_as_cfi_sections_directive=yes ;; esac]) GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports .cfi_sections.]) # GAS versions up to and including 2.11.0 may mis-optimize # .eh_frame data. gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,, [ .text .LFB1: .4byte 0 .L1: .4byte 0 .LFE1: .section .eh_frame,"aw",@progbits __FRAME_BEGIN__: .4byte .LECIE1-.LSCIE1 .LSCIE1: .4byte 0x0 .byte 0x1 .ascii "z\0" .byte 0x1 .byte 0x78 .byte 0x1a .byte 0x0 .byte 0x4 .4byte 1 .p2align 1 .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 .LASFDE1: .4byte .LASFDE1-__FRAME_BEGIN__ .4byte .LFB1 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .L1-.LFB1 .LEFDE1:], [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. cat > conftest.lit < conftest.big </dev/null \ | tail -3 > conftest.got \ && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ || diff -b conftest.big conftest.got > /dev/null 2>&1; } then gcc_cv_as_eh_frame=yes elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then gcc_cv_as_eh_frame=buggy else # Uh oh, what do we do now? gcc_cv_as_eh_frame=no fi]) if test $gcc_cv_as_eh_frame = buggy; then AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, [Define if your assembler mis-optimizes .eh_frame data.]) fi # Test if the assembler supports the section flag 'e' or #exclude for # specifying an excluded section. gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e, [--fatal-warnings], [.section foo1,"e" .byte 0,0,0,0]) if test $gcc_cv_as_section_exclude_e = no; then case "${target}" in # Solaris as uses #exclude instead. *-*-solaris2*) case "${target}" in sparc*-*-solaris2*) conftest_s='.section "foo1", #exclude' ;; i?86-*-solaris2* | x86_64-*-solaris2*) conftest_s='.section foo1, #exclude' ;; esac ;; esac gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,, [$conftest_s .byte 0,0,0,0]) fi AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports specifying the exclude section flag.]) # Test if the assembler supports the section flag 'R' for specifying # section with SHF_GNU_RETAIN. case "${target}" in # Solaris may use GNU assembler with Solairs ld. Even if GNU # assembler supports the section flag 'R', it doesn't mean that # Solairs ld supports it. *-*-solaris2*) gcc_cv_as_shf_gnu_retain=no ;; *) gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain, [--fatal-warnings], [.section .foo,"awR",%progbits .byte 0]) ;; esac AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN, [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.]) # Test if the assembler supports the section flag 'o' for specifying # section with link-order. case "${target}" in # Solaris may use GNU assembler with Solairs ld. Even if GNU # assembler supports the section flag 'o', it doesn't mean that # Solairs ld supports it. *-*-solaris2*) gcc_cv_as_section_link_order=no ;; *) gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order, [--fatal-warnings], [.section .foo,"a" .byte 0 .section __patchable_function_entries,"awo",%progbits,.foo .byte 0]) ;; esac AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER, [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports 'o' flag in .section directive.]) gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [--fatal-warnings], [.section .rodata.str, "aMS", @progbits, 1]) if test $gcc_cv_as_shf_merge = no; then gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [--fatal-warnings], [.section .rodata.str, "aMS", %progbits, 1]) fi AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) gcc_cv_ld_aligned_shf_merge=yes case "$target" in # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for # alignment > 1. sparc*-*-solaris2.11*) if test x"$gnu_ld" = xno \ && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then gcc_cv_ld_aligned_shf_merge=no fi ;; esac AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE, [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.]) gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive,, [.stabs "gcc2_compiled.",60,0,0,0],, [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, [Define if your assembler supports .stabs.])]) gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], gcc_cv_as_comdat_group, [--fatal-warnings], [.section .text,"axG",@progbits,.foo,comdat]) if test $gcc_cv_as_comdat_group = yes; then gcc_cv_as_comdat_group_percent=no gcc_cv_as_comdat_group_group=no else gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], gcc_cv_as_comdat_group_percent, [--fatal-warnings], [.section .text,"axG",%progbits,.foo,comdat]) if test $gcc_cv_as_comdat_group_percent = yes; then gcc_cv_as_comdat_group_group=no else case "${target}" in # Sun as uses a completely different syntax. *-*-solaris2*) case "${target}" in sparc*-*-solaris2*) conftest_s=' .group foo,".text%foo",#comdat .section ".text%foo", #alloc,#execinstr,#progbits .globl foo foo: ' ;; i?86-*-solaris2* | x86_64-*-solaris2*) conftest_s=' .group foo,.text%foo,#comdat .section .text%foo, "ax", @progbits .globl foo foo: ' ;; esac gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], gcc_cv_as_comdat_group_group, , [$conftest_s]) ;; esac if test -z "${gcc_cv_as_comdat_group_group+set}"; then gcc_cv_as_comdat_group_group=no fi fi fi if test x"$ld_is_gold" = xyes; then comdat_group=yes elif test x"$ld_is_mold" = xyes; then comdat_group=yes elif test $in_tree_ld = yes ; then comdat_group=no if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then comdat_group=yes fi elif echo "$ld_ver" | grep GNU > /dev/null; then comdat_group=yes if test 0"$ld_date" -lt 20050308; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2005-03-08, fail comdat_group=no elif test "$ld_vers_major" -lt 2; then comdat_group=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then comdat_group=no fi fi else changequote(,)dnl case "${target}" in *-*-solaris2.1[1-9]*) comdat_group=no # Sun ld has COMDAT group support since Solaris 9, but it doesn't # interoperate with GNU as until Solaris 11 build 130, i.e. ld # version 1.688. # # If using Sun as for COMDAT group as emitted by GCC, one needs at # least ld version 1.2267. if test "$ld_vers_major" -gt 1; then comdat_group=yes elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then comdat_group=yes elif test "$ld_vers_minor" -ge 2267; then comdat_group=yes fi ;; *) # Assume linkers other than GNU ld don't support COMDAT group. comdat_group=no ;; esac changequote([,])dnl fi # Allow overriding the automatic COMDAT group tests above. AC_ARG_ENABLE(comdat, [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], [comdat_group="$enable_comdat"]) if test $comdat_group = no; then gcc_cv_as_comdat_group=no gcc_cv_as_comdat_group_percent=no gcc_cv_as_comdat_group_group=no fi AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, [`if test $gcc_cv_as_comdat_group = yes \ || test $gcc_cv_as_comdat_group_percent = yes \ || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support COMDAT groups.]) # Restrict this test to Solaris/x86: other targets define this statically. case "${target}" in i?86-*-solaris2* | x86_64-*-solaris2*) AC_MSG_CHECKING(support for hidden thunks in linkonce sections) if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then hidden_linkonce=yes else case "${target}" in # Full support for hidden thunks in linkonce sections only appeared in # Solaris 11/OpenSolaris. *-*-solaris2.1[[1-9]]*) hidden_linkonce=yes ;; *) hidden_linkonce=no ;; esac fi AC_MSG_RESULT($hidden_linkonce) AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE, [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports hidden thunks in linkonce sections.]) ;; esac gcc_GAS_CHECK_FEATURE([line table is_stmt support], gcc_cv_as_is_stmt,, [ .text .file 1 "conf.c" .loc 1 1 0 is_stmt 1],, [AC_DEFINE(HAVE_GAS_LOC_STMT, 1, [Define if your assembler supports the .loc is_stmt sub-directive.])]) gcc_GAS_CHECK_FEATURE([line table discriminator support], gcc_cv_as_discriminator,, [ .text .file 1 "conf.c" .loc 1 1 0 discriminator 1],, [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, [Define if your assembler supports the .loc discriminator sub-directive.])]) # Catch the newlib flag of the same name so we can gate GCC features on it. AC_ARG_ENABLE(newlib-nano-formatted-io, [AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version formatted IO])], [case "${enableval}" in yes|no) ;; *) AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval]) ;; esac], []) # Thread-local storage - the check is heavily parameterized. conftest_s= tls_as_opt= case "$target" in changequote(,)dnl alpha*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text ldq $27,__tls_get_addr($29) !literal!1 lda $16,foo($29) !tlsgd!1 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 ldq $27,__tls_get_addr($29) !literal!2 lda $16,foo($29) !tlsldm!2 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 ldq $1,foo($29) !gotdtprel ldah $2,foo($29) !dtprelhi lda $3,foo($2) !dtprello lda $4,foo($29) !dtprel ldq $1,foo($29) !gottprel ldah $2,foo($29) !tprelhi lda $3,foo($2) !tprello lda $4,foo($29) !tprel' tls_as_opt=--fatal-warnings ;; arc*-*-*) conftest_s=' add_s r0,r0, @foo@tpoff' ;; cris-*-*|crisv32-*-*) conftest_s=' .section ".tdata","awT",@progbits x: .long 25 .text move.d x:IE,$r10 nop' tls_as_opt=--fatal-warnings ;; frv*-*-*) conftest_s=' .section ".tdata","awT",@progbits x: .long 25 .text call #gettlsoff(x)' ;; hppa*-*-linux*) conftest_s=' t1: .reg %r20 t2: .reg %r21 gp: .reg %r19 .section ".tdata","awT",@progbits foo: .long 25 .text .align 4 addil LT%foo-$tls_gdidx$,gp ldo RT%foo-$tls_gdidx$(%r1),%arg0 b __tls_get_addr nop addil LT%foo-$tls_ldidx$,gp b __tls_get_addr ldo RT%foo-$tls_ldidx$(%r1),%arg0 addil LR%foo-$tls_dtpoff$,%ret0 ldo RR%foo-$tls_dtpoff$(%r1),%t1 mfctl %cr27,%t1 addil LT%foo-$tls_ieoff$,gp ldw RT%foo-$tls_ieoff$(%r1),%t2 add %t1,%t2,%t3 mfctl %cr27,%t1 addil LR%foo-$tls_leoff$,%t1 ldo RR%foo-$tls_leoff$(%r1),%t2' tls_as_opt=--fatal-warnings ;; arm*-*-*) conftest_s=' .section ".tdata","awT",%progbits foo: .long 25 .text .word foo(gottpoff) .word foo(tpoff) .word foo(tlsgd) .word foo(tlsldm) .word foo(tlsldo)' ;; i[34567]86-*-* | x86_64-*-*) case "$target" in i[34567]86-*-solaris2.* | x86_64-*-solaris2.*) on_solaris=yes ;; *) on_solaris=no ;; esac if test x$on_solaris = xyes && test x$gas_flag = xno; then conftest_s=' .section .tdata,"awt",@progbits' tls_section_flag=t changequote([,])dnl AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', [Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) changequote(,)dnl else conftest_s=' .section ".tdata","awT",@progbits' tls_section_flag=T tls_as_opt="--fatal-warnings" fi case "$target" in i[34567]86-*-*) if test x$on_solaris = xyes; then case $gas_flag in yes) tls_as_opt="$tls_as_opt --32" ;; esac fi conftest_s="$conftest_s foo: .long 25 .text movl %gs:0, %eax leal foo@tlsgd(,%ebx,1), %eax leal foo@tlsldm(%ebx), %eax leal foo@dtpoff(%eax), %edx movl foo@gottpoff(%ebx), %eax subl foo@gottpoff(%ebx), %eax addl foo@gotntpoff(%ebx), %eax movl foo@indntpoff, %eax movl \$foo@tpoff, %eax subl \$foo@tpoff, %eax leal foo@ntpoff(%ecx), %eax" ;; x86_64-*-*) if test x$on_solaris = xyes; then case $gas_flag in yes) tls_as_opt="$tls_as_opt --64" ;; no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; esac fi conftest_s="$conftest_s foo: .long 25 .text movq %fs:0, %rax leaq foo@tlsgd(%rip), %rdi leaq foo@tlsld(%rip), %rdi leaq foo@dtpoff(%rax), %rdx movq foo@gottpoff(%rip), %rax movq \$foo@tpoff, %rax" ;; esac ;; ia64-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: data8 25 .text addl r16 = @ltoff(@dtpmod(foo#)), gp addl r17 = @ltoff(@dtprel(foo#)), gp addl r18 = @ltoff(@tprel(foo#)), gp addl r19 = @dtprel(foo#), gp adds r21 = @dtprel(foo#), r13 movl r23 = @dtprel(foo#) addl r20 = @tprel(foo#), gp adds r22 = @tprel(foo#), r13 movl r24 = @tprel(foo#)' tls_as_opt=--fatal-warnings ;; loongarch*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text la.tls.gd $a0,x bl __tls_get_addr' tls_first_major=0 tls_first_minor=0 tls_as_opt='--fatal-warnings' ;; microblaze*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text addik r5,r20,x@TLSGD addik r5,r20,x@TLSLDM' tls_as_opt='--fatal-warnings' ;; mips*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text addiu $4, $28, %tlsgd(x) addiu $4, $28, %tlsldm(x) lui $4, %dtprel_hi(x) addiu $4, $4, %dtprel_lo(x) lw $4, %gottprel(x)($28) lui $4, %tprel_hi(x) addiu $4, $4, %tprel_lo(x)' tls_as_opt='-32 --fatal-warnings' ;; m68k-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text foo: move.l x@TLSGD(%a5),%a0 move.l x@TLSLDM(%a5),%a0 move.l x@TLSLDO(%a5),%a0 move.l x@TLSIE(%a5),%a0 move.l x@TLSLE(%a5),%a0' tls_as_opt='--fatal-warnings' ;; nios2-*-*) conftest_s=' .section ".tdata","awT",@progbits' tls_as_opt="--fatal-warnings" ;; aarch64*-*-*) conftest_s=' .section ".tdata","awT",%progbits foo: .long 25 .text adrp x0, :tlsgd:x add x0, x0, #:tlsgd_lo12:x bl __tls_get_addr nop' tls_as_opt='--fatal-warnings' ;; or1k*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text l.movhi r3, tpoffha(foo) l.add r3, r3, r10 l.lwz r4, tpofflo(foo)(r3)' tls_as_opt=--fatal-warnings ;; powerpc-ibm-aix*) conftest_s=' .extern __get_tpointer .toc LC..1: .tc a[TC],a[TL]@le .csect .text[PR] .tlstest: lwz 9,LC..1(2) bla __get_tpointer lwzx 3,9,3 .globl a .csect a[TL],4 a: .space 4' ;; powerpc64*-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 3 ld0: .space 8 ld1: .space 8 x1: .space 8 x2: .space 8 x3: .space 8 .text addi 3,2,ld0@got@tlsgd bl .__tls_get_addr nop addi 3,2,ld1@toc bl .__tls_get_addr nop addi 3,2,x1@got@tlsld bl .__tls_get_addr nop addi 9,3,x1@dtprel bl .__tls_get_addr nop addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l bl .__tls_get_addr nop ld 9,x3@got@dtprel(2) add 9,9,3 bl .__tls_get_addr nop' tls_as_opt="-a64 --fatal-warnings" ;; powerpc*-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 2 ld0: .space 4 ld1: .space 4 x1: .space 4 x2: .space 4 x3: .space 4 .text addi 3,31,ld0@got@tlsgd bl __tls_get_addr addi 3,31,x1@got@tlsld bl __tls_get_addr addi 9,3,x1@dtprel addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l lwz 9,x3@got@tprel(31) add 9,9,x@tls addi 9,2,x1@tprel addis 9,2,x2@tprel@ha addi 9,9,x2@tprel@l' tls_as_opt="-a32 --fatal-warnings" ;; riscv*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text la.tls.gd a0,x call __tls_get_addr' tls_as_opt='--fatal-warnings' ;; s390-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@NTPOFF .long foo@GOTNTPOFF .long foo@INDNTPOFF l %r1,foo@GOTNTPOFF(%r12) l %r1,0(%r1):tls_load:foo bas %r14,0(%r1,%r13):tls_gdcall:foo bas %r14,0(%r1,%r13):tls_ldcall:foo' tls_as_opt="-m31 --fatal-warnings" ;; s390x-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .quad foo@TLSGD .quad foo@TLSLDM .quad foo@DTPOFF .quad foo@NTPOFF .quad foo@GOTNTPOFF lg %r1,foo@GOTNTPOFF(%r12) larl %r1,foo@INDNTPOFF brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' tls_as_opt="-m64 -Aesame --fatal-warnings" ;; sh-*-* | sh[123456789lbe]*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@GOTTPOFF .long foo@TPOFF' tls_as_opt=--fatal-warnings ;; sparc*-*-*) case "$target" in sparc*-sun-solaris2.*) on_solaris=yes ;; *) on_solaris=no ;; esac if test x$on_solaris = xyes && test x$gas_flag = xno; then conftest_s=' .section ".tdata",#alloc,#write,#tls' else conftest_s=' .section ".tdata","awT",@progbits' tls_as_opt="-32 --fatal-warnings" fi conftest_s="$conftest_s foo: .long 25 .text sethi %tgd_hi22(foo), %o0 add %o0, %tgd_lo10(foo), %o1 add %l7, %o1, %o0, %tgd_add(foo) call __tls_get_addr, %tgd_call(foo) sethi %tldm_hi22(foo), %l1 add %l1, %tldm_lo10(foo), %l2 add %l7, %l2, %o0, %tldm_add(foo) call __tls_get_addr, %tldm_call(foo) sethi %tldo_hix22(foo), %l3 xor %l3, %tldo_lox10(foo), %l4 add %o0, %l4, %l5, %tldo_add(foo) sethi %tie_hi22(foo), %o3 add %o3, %tie_lo10(foo), %o3 ld [%l7 + %o3], %o2, %tie_ld(foo) add %g7, %o2, %o4, %tie_add(foo) sethi %tle_hix22(foo), %l1 xor %l1, %tle_lox10(foo), %o5 ld [%g7 + %o5], %o1" ;; tilepro*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text addli r0, zero, tls_gd(foo) auli r0, zero, tls_gd_ha16(foo) addli r0, r0, tls_gd_lo16(foo) jal __tls_get_addr addli r0, zero, tls_ie(foo) auli r0, r0, tls_ie_ha16(foo) addli r0, r0, tls_ie_lo16(foo)' tls_as_opt="--fatal-warnings" ;; tilegx*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text shl16insli r0, zero, hw0_last_tls_gd(foo) shl16insli r0, zero, hw1_last_tls_gd(foo) shl16insli r0, r0, hw0_tls_gd(foo) jal __tls_get_addr shl16insli r0, zero, hw1_last_tls_ie(foo) shl16insli r0, r0, hw0_tls_ie(foo)' tls_as_opt="--fatal-warnings" ;; xtensa*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text movi a8, foo@TLSFUNC movi a10, foo@TLSARG callx8.tls a8, foo@TLSCALL' ;; changequote([,])dnl esac set_have_as_tls=no if test "x$enable_tls" = xno ; then : # TLS explicitly disabled. elif test "x$enable_tls" = xyes ; then set_have_as_tls=yes # TLS explicitly enabled. elif test -z "$conftest_s"; then : # If we don't have a check, assume no support. else gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, [$tls_as_opt], [$conftest_s],, [set_have_as_tls=yes]) fi if test $set_have_as_tls = yes ; then AC_DEFINE(HAVE_AS_TLS, 1, [Define if your assembler and linker support thread-local storage.]) fi # Target-specific assembler checks. AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) gcc_cv_ld_static_dynamic=no gcc_cv_ld_static_option='-Bstatic' gcc_cv_ld_dynamic_option='-Bdynamic' if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_static_dynamic=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -Bstatic/-Bdynamic option if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \ && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then gcc_cv_ld_static_dynamic=yes else case "$target" in # AIX ld uses -b flags *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) gcc_cv_ld_static_dynamic=yes gcc_cv_ld_static_option="-bstatic" gcc_cv_ld_dynamic_option="-bdynamic" ;; # HP-UX ld uses -a flags to select between shared and archive. *-*-hpux*) if test x"$gnu_ld" = xno; then gcc_cv_ld_static_dynamic=yes gcc_cv_ld_static_option="-aarchive_shared" gcc_cv_ld_dynamic_option="-adefault" fi ;; # Solaris 2 ld always supports -Bstatic/-Bdynamic. *-*-solaris2*) gcc_cv_ld_static_dynamic=yes ;; esac fi fi if test x"$gcc_cv_ld_static_dynamic" = xyes; then AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", [Define to the linker option to disable use of shared objects.]) AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", [Define to the linker option to enable use of shared objects.]) fi AC_MSG_RESULT($gcc_cv_ld_static_dynamic) AC_MSG_CHECKING(linker --version-script option) gcc_cv_ld_version_script=no ld_version_script_option='' if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then gcc_cv_ld_version_script=yes ld_version_script_option='--version-script' elif test x$gcc_cv_ld != x; then case "$target" in # Solaris 2 ld always supports -M. It also supports a subset of # --version-script since Solaris 11.4, but requires # -z gnu-version-script-compat to activate. *-*-solaris2*) gcc_cv_ld_version_script=yes ld_version_script_option='-M' ;; esac fi # Don't AC_DEFINE result, only used in jit/Make-lang.in so far. AC_MSG_RESULT($gcc_cv_ld_version_script) AC_SUBST(ld_version_script_option) AC_MSG_CHECKING(linker soname option) gcc_cv_ld_soname=no if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then gcc_cv_ld_soname=yes ld_soname_option='-soname' elif test x$gcc_cv_ld != x; then case "$target" in *-*-darwin*) gcc_cv_ld_soname=yes ld_soname_option='-install_name' ;; # Solaris 2 ld always supports -h. It also supports --soname for GNU # ld compatiblity since some Solaris 10 update. *-*-solaris2*) gcc_cv_ld_soname=yes ld_soname_option='-h' ;; esac fi # Don't AC_DEFINE result, only used in jit/Make-lang.in so far. AC_MSG_RESULT($gcc_cv_ld_soname) AC_SUBST(ld_soname_option) if test x"$demangler_in_ld" = xyes; then AC_MSG_CHECKING(linker --demangle support) gcc_cv_ld_demangle=no if test $in_tree_ld = yes; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ gcc_cv_ld_demangle=yes fi elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then # Check if the GNU linker supports --demangle option if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then gcc_cv_ld_demangle=yes fi fi if test x"$gcc_cv_ld_demangle" = xyes; then AC_DEFINE(HAVE_LD_DEMANGLE, 1, [Define if your linker supports --demangle option.]) fi AC_MSG_RESULT($gcc_cv_ld_demangle) fi AC_MSG_CHECKING(linker plugin support) gcc_cv_lto_plugin=0 if test -f liblto_plugin.la; then save_ld_ver="$ld_ver" save_ld_vers_major="$ld_vers_major" save_ld_vers_minor="$ld_vers_minor" save_ld_is_gold="$ld_is_gold" ld_is_gold=no if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then ld_ver="GNU ld" # FIXME: ld_is_gold? ld_vers_major="$gcc_cv_gld_major_version" ld_vers_minor="$gcc_cv_gld_minor_version" else # Determine plugin linker version. # FIXME: Partial duplicate from above, generalize. changequote(,)dnl ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then if echo "$ld_ver" | grep "GNU gold" > /dev/null; then ld_is_gold=yes ld_vers=`echo $ld_ver | sed -n \ -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` else ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` fi ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` fi changequote([,])dnl fi # Determine plugin support. if echo "$ld_ver" | grep GNU > /dev/null; then # Require GNU ld or gold 2.21+ for plugin support by default. if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then gcc_cv_lto_plugin=2 elif test "$ld_is_mold" = yes; then gcc_cv_lto_plugin=2 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then gcc_cv_lto_plugin=1 fi fi ld_ver="$save_ld_ver" ld_vers_major="$save_ld_vers_major" ld_vers_minor="$save_ld_vers_minor" ld_is_gold="$save_ld_is_gold" fi AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, [Define to the level of your linker's plugin support.]) AC_MSG_RESULT($gcc_cv_lto_plugin) # Target OS-specific assembler checks. case "$target_os" in darwin*) gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option], gcc_cv_as_mmacosx_version_min, [-mmacosx-version-min=10.1], [.text],, [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1, [Define if your Mac OS X assembler supports the -mmacos-version-min option.])]) ;; esac # Target CPU-specific assembler checks. case "$target" in aarch64*-*-*) gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi, [-mabi=lp64], [.text],,,) if test x$gcc_cv_as_aarch64_mabi = xyes; then AC_DEFINE(HAVE_AS_MABI_OPTION, 1, [Define if your assembler supports the -mabi option.]) else if test x$with_abi = xilp32; then AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ Upgrade the Assembler.]) fi if test x"$with_multilib_list" = xdefault; then TM_MULTILIB_CONFIG=lp64 else aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` for aarch64_multilib in ${aarch64_multilibs}; do case ${aarch64_multilib} in ilp32) AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ Upgrade the Assembler.]) ;; *) ;; esac done fi fi # Check if we have binutils support for relocations types needed by -fpic gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,, [ .text ldr x0, [[x2, #:gotpage_lo15:globalsym]] ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, [Define if your assembler supports relocs needed by -fpic.])]) # Enable Branch Target Identification Mechanism and Return Address # Signing by default. AC_ARG_ENABLE(standard-branch-protection, [ AS_HELP_STRING([--enable-standard-branch-protection], [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) AS_HELP_STRING([--disable-standard-branch-protection], [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) ], [ case $enableval in yes) tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1" ;; no) ;; *) AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\ Valid choices are 'yes' and 'no'.]) ;; esac ], []) # Enable default workaround for AArch64 Cortex-A53 erratum 835769. AC_ARG_ENABLE(fix-cortex-a53-835769, [ AS_HELP_STRING([--enable-fix-cortex-a53-835769], [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) AS_HELP_STRING([--disable-fix-cortex-a53-835769], [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) ], [ case $enableval in yes) tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" ;; no) ;; *) AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ Valid choices are 'yes' and 'no'.]) ;; esac ], []) # Enable default workaround for AArch64 Cortex-A53 erratum 843419. AC_ARG_ENABLE(fix-cortex-a53-843419, [ AS_HELP_STRING([--enable-fix-cortex-a53-843419], [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) AS_HELP_STRING([--disable-fix-cortex-a53-843419], [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) ], [ case $enableval in yes) tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" ;; no) ;; *) AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ Valid choices are 'yes' and 'no'.]) ;; esac ], []) ;; # All TARGET_ABI_OSF targets. alpha*-*-linux* | alpha*-*-*bsd*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_alpha_explicit_relocs,, [ .set nomacro .text extbl $3, $2, $3 !lituse_bytoff!1 ldq $2, a($29) !literal!1 ldq $4, b($29) !literal!2 ldq_u $3, 0($2) !lituse_base!1 ldq $27, f($29) !literal!5 jsr $26, ($27), f !lituse_jsr!5 ldah $29, 0($26) !gpdisp!3 lda $0, c($29) !gprel ldah $1, d($29) !gprelhigh lda $1, d($1) !gprellow lda $29, 0($29) !gpdisp!3],, [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, [Define if your assembler supports explicit relocations.])]) gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], gcc_cv_as_alpha_jsrdirect_relocs,, [ .set nomacro .text ldq $27, a($29) !literal!1 jsr $26, ($27), a !lituse_jsrdirect!1],, [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, [Define if your assembler supports the lituse_jsrdirect relocation.])]) ;; avr-*-*) gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax, [--mlink-relax], [.text],, [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, [Define if your avr assembler supports --mlink-relax option.])]) gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw, [-mrmw], [.text],, [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, [Define if your avr assembler supports -mrmw option.])]) gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction], gcc_cv_as_avr_mgccisr, [-mgcc-isr], [.text __gcc_isr 1 __gcc_isr 2 __gcc_isr 0,r24 ],, [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1, [Define if your avr assembler supports -mgcc-isr option.])]) # Check how default linker description file implements .rodata for # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to # RAM so avr-gcc skips __do_copy_data for .rodata objects. AC_MSG_CHECKING(binutils for avrxmega3 .rodata support) cat > conftest.s < conftest.nm]) if test -s conftest.nm then if grep ' R xxvaryy' conftest.nm > /dev/null; then AC_MSG_RESULT(yes) AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1, [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.]) else AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM) echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD cat conftest.nm >&AS_MESSAGE_LOG_FD avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`" AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]]) fi else AC_MSG_RESULT(test failed) echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD cat conftest.s >&AS_MESSAGE_LOG_FD AC_MSG_WARN([[see `config.log' for details]]) fi rm -f conftest.s conftest.o conftest.elf conftest.nm ;; cris-*-*) gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], gcc_cv_as_cris_no_mul_bug, [-no-mul-bug-abort], [.text],, [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, [Define if your assembler supports the -no-mul-bug-abort option.])]) ;; sparc*-*-*) gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax, [-relax], [.text],, [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.])]) gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], gcc_cv_as_sparc_gotdata_op, [-K PIC], [.text .align 4 foo: nop bar: sethi %gdop_hix22(foo), %g1 xor %g1, %gdop_lox10(foo), %g1 ld [[%l7 + %g1]], %g2, %gdop(foo)], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then if test x$gcc_cv_objdump != x; then if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then gcc_cv_as_sparc_gotdata_op=no else gcc_cv_as_sparc_gotdata_op=yes fi fi fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, [Define if your assembler and linker support GOTDATA_OP relocs.])]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], gcc_cv_as_sparc_ua_pcrel, [-K PIC], [.text foo: nop .data .align 4 .byte 0 .uaword %r_disp32(foo)], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_sparc_ua_pcrel=yes fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, [Define if your assembler and linker support unaligned PC relative relocs.]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], gcc_cv_as_sparc_ua_pcrel_hidden, [-K PIC], [.data .align 4 .byte 0x31 .uaword %r_disp32(foo) .byte 0x32, 0x33, 0x34 .global foo .hidden foo foo: .skip 4], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ | grep ' 31000000 07323334' > /dev/null 2>&1; then if $gcc_cv_objdump -R conftest 2> /dev/null \ | grep 'DISP32' > /dev/null 2>&1; then : else gcc_cv_as_sparc_ua_pcrel_hidden=yes fi fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) ]) # unaligned pcrel relocs gcc_GAS_CHECK_FEATURE([offsetable %lo()], gcc_cv_as_sparc_offsetable_lo10, [-xarch=v9], [.text or %g1, %lo(ab) + 12, %g1 or %g1, %lo(ab + 12), %g1], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ | grep ' 82106000 82106000' > /dev/null 2>&1; then gcc_cv_as_sparc_offsetable_lo10=yes fi], [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, [Define if your assembler supports offsetable %lo().])]) gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], gcc_cv_as_sparc_fmaf, [-xarch=v9d], [.text .register %g2, #scratch .register %g3, #scratch .align 4 fmaddd %f0, %f2, %f4, %f6 addxccc %g1, %g2, %g3 fsrl32 %f2, %f4, %f8 fnaddd %f10, %f12, %f14],, [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) gcc_GAS_CHECK_FEATURE([SPARC4 instructions], gcc_cv_as_sparc_sparc4, [-xarch=sparc4], [.text .register %g2, #scratch .register %g3, #scratch .align 4 cxbe %g2, %g3, 1f 1: cwbneg %g2, %g3, 1f 1: sha1 md5 aes_kexpand0 %f4, %f6, %f8 des_round %f38, %f40, %f42, %f44 camellia_f %f54, %f56, %f58, %f60 kasumi_fi_xor %f46, %f48, %f50, %f52],, [AC_DEFINE(HAVE_AS_SPARC4, 1, [Define if your assembler supports SPARC4 instructions.])]) gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], gcc_cv_as_sparc_sparc5, [-xarch=sparc5], [.text .register %g2, #scratch .register %g3, #scratch .align 4 subxc %g1, %g2, %g3 fpadd8 %f0, %f2, %f4],, [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) gcc_GAS_CHECK_FEATURE([SPARC6 instructions], gcc_cv_as_sparc_sparc6, [-xarch=sparc6], [.text .register %g2, #scratch .register %g3, #scratch .align 4 rd %entropy, %g1 fpsll64x %f0, %f2, %f4],, [AC_DEFINE(HAVE_AS_SPARC6, 1, [Define if your assembler supports SPARC6 instructions.])]) gcc_GAS_CHECK_FEATURE([LEON instructions], gcc_cv_as_sparc_leon, [-Aleon], [.text .register %g2, #scratch .register %g3, #scratch .align 4 smac %g2, %g3, %g1 umac %g2, %g3, %g1 casa [[%g2]] 0xb, %g3, %g1],, [AC_DEFINE(HAVE_AS_LEON, 1, [Define if your assembler supports LEON instructions.])]) ;; changequote(,)dnl i[34567]86-*-* | x86_64-*-*) changequote([,])dnl case $target_os in cygwin*) # Full C++ conformance when using a shared libstdc++-v3 requires some # support from the Cygwin DLL, which in more recent versions exports # wrappers to aid in interposing and redirecting operators new, delete, # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we # are configuring for a version of Cygwin that exports the wrappers. if test x$host = x$target && test x$host_cpu = xi686; then AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) else # Can't check presence of libc functions during cross-compile, so # we just have to assume we're building for an up-to-date target. gcc_ac_cygwin_dll_wrappers=yes fi AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], [Define if you want to generate code by default that assumes that the Cygwin DLL exports wrappers to support libstdc++ function replacement.]) esac case $target_os in cygwin* | pe | mingw32*) # Recent binutils allows the three-operand form of ".comm" on PE. This # definition is used unconditionally to initialise the default state of # the target option variable that governs usage of the feature. gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,, [.comm foo,1,32]) AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports specifying the alignment of objects allocated using the GAS .comm command.]) # Used for DWARF 2 in PE gcc_GAS_CHECK_FEATURE([.secrel32 relocs], gcc_cv_as_ix86_pe_secrel32,, [.text foo: nop .data .secrel32 foo], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_as_ix86_pe_secrel32=yes fi rm -f conftest], [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) # Test if the assembler supports the extended form of the .section # directive that specifies section alignment. LTO support uses this, # but normally only after installation, so we warn but don't fail the # configure if LTO is enabled but the assembler does not support it. gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, -fatal-warnings,[.section lto_test,"dr0"]) if test x$gcc_cv_as_section_has_align != xyes; then case ",$enable_languages," in *,lto,*) AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) ;; esac fi ;; esac case $target_os in darwin2* | darwin19*) gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option], gcc_cv_as_mllvm_x86_pad_for_align, [-mllvm -x86-pad-for-align=false], [.text],, [AC_DEFINE(HAVE_AS_MLLVM_X86_PAD_FOR_ALIGN, 1, [Define if your Mac OS X assembler supports -mllvm -x86-pad-for-align=false.])]) ;; esac gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment, [-xbrace_comment=no], [.text],, [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1, [Define if your assembler supports -xbrace_comment option.])]) gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], gcc_cv_as_ix86_filds,, [filds (%ebp); fists (%ebp)],, [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, [Define if your assembler uses filds and fists mnemonics.])]) gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], gcc_cv_as_ix86_fildq,, [fildq (%ebp); fistpq (%ebp)],, [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, [Define if your assembler uses fildq and fistq mnemonics.])]) gcc_GAS_CHECK_FEATURE([cmov syntax], gcc_cv_as_ix86_cmov_sun_syntax,, [cmovl.l %edx, %eax],, [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, [Define if your assembler supports the Sun syntax for cmov.])]) gcc_GAS_CHECK_FEATURE([ffreep mnemonic], gcc_cv_as_ix86_ffreep,, [ffreep %st(1)],, [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, [Define if your assembler supports the ffreep mnemonic.])]) gcc_GAS_CHECK_FEATURE([.quad directive], gcc_cv_as_ix86_quad,, [.quad 0],, [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, [Define if your assembler supports the .quad directive.])]) gcc_GAS_CHECK_FEATURE([sahf mnemonic], gcc_cv_as_ix86_sahf,, [.code64 sahf],, [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], gcc_cv_as_ix86_interunit_movq,, [.code64 movq %mm0, %rax movq %rax, %xmm0]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports interunit movq mnemonic.]) gcc_GAS_CHECK_FEATURE([hle prefixes], gcc_cv_as_ix86_hle,, [lock xacquire cmpxchg %esi, (%ecx)],, [AC_DEFINE(HAVE_AS_IX86_HLE, 1, [Define if your assembler supports HLE prefixes.])]) gcc_GAS_CHECK_FEATURE([swap suffix], gcc_cv_as_ix86_swap,, [movl.s %esp, %ebp],, [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, [Define if your assembler supports the swap suffix.])]) gcc_GAS_CHECK_FEATURE([different section symbol subtraction], gcc_cv_as_ix86_diff_sect_delta,, [.section .rodata .L1: .long .L2-.L1 .long .L3-.L1 .text .L3: nop .L2: nop],, [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, [Define if your assembler supports the subtraction of symbols in different sections.])]) gcc_GAS_CHECK_FEATURE([rep and lock prefix], gcc_cv_as_ix86_rep_lock_prefix,, [rep movsl rep ret rep nop rep bsf %ecx, %eax rep bsr %ecx, %eax lock addl %edi, (%eax,%esi) lock orl $0, (%esp)],, [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, [Define if the assembler supports 'rep , lock '.])]) gcc_GAS_CHECK_FEATURE([ud2 mnemonic], gcc_cv_as_ix86_ud2,, [ud2],, [AC_DEFINE(HAVE_AS_IX86_UD2, 1, [Define if your assembler supports the 'ud2' mnemonic.])]) # Enforce 32-bit output with gas and gld. if test x$gas = xyes; then as_ix86_gas_32_opt="--32" fi if echo "$ld_ver" | grep GNU > /dev/null; then if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then ld_ix86_gld_32_opt="-melf_i386_sol2" else ld_ix86_gld_32_opt="-melf_i386" fi fi gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], gcc_cv_as_ix86_tlsgdplt, [$as_ix86_gas_32_opt], [call tls_gd@tlsgdplt], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_ix86_tlsgdplt=yes fi rm -f conftest], [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, [Define if your assembler and linker support @tlsgdplt.])]) conftest_s=' .section .tdata,"aw'$tls_section_flag'",@progbits tls_ld: .section .text,"ax",@progbits call tls_ld@tlsldmplt' gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], gcc_cv_as_ix86_tlsldmplt, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_ix86_tlsldmplt=yes fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], [Define to 1 if your assembler and linker support @tlsldmplt.]) conftest_s=' .section .text,"ax",@progbits .globl _start .type _start, @function _start: leal value@tlsldm(%ebx), %eax call ___tls_get_addr@plt .section .tdata,"aw'$tls_section_flag'",@progbits .type value, @object value:' gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], gcc_cv_as_ix86_tlsldm, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ || dis conftest 2>/dev/null | grep nop > /dev/null; then gcc_cv_as_ix86_tlsldm=yes fi fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], [Define to 1 if your assembler and linker support @tlsldm.]) conftest_s=' .data bar: .byte 1 .text .global _start _start: cmpl $0, bar@GOT jmp *_start@GOT' gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], gcc_cv_as_ix86_got32x, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && test x$gcc_cv_readelf != x \ && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ | grep R_386_GOT32X > /dev/null 2>&1 \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then if $gcc_cv_objdump -dw conftest 2>&1 \ | grep 0xffffff > /dev/null 2>&1; then gcc_cv_as_ix86_got32x=no else gcc_cv_as_ix86_got32x=yes fi fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support @GOT.]) gcc_GAS_CHECK_FEATURE([GOTOFF in data], gcc_cv_as_ix86_gotoff_in_data, [$as_ix86_gas_32_opt], [ .text .L0: nop .data .long .L0@GOTOFF]) AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], [Define true if the assembler supports '.long foo@GOTOFF'.]) conftest_s=' .section .text,"ax",@progbits .globl _start .type _start, @function _start: leal ld@tlsldm(%ecx), %eax call *___tls_get_addr@GOT(%ecx) leal gd@tlsgd(%ecx), %eax call *___tls_get_addr@GOT(%ecx) .section .tdata,"aw'$tls_section_flag'",@progbits .type ld, @object ld: .byte 0 .globl gd .type gd, @object gd: .byte 0' gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], gcc_cv_as_ix86_tls_get_addr_via_got, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_as_ix86_tls_get_addr_via_got=yes fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) ;; ia64*-*-*) gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], gcc_cv_as_ia64_ltoffx_ldxmov_relocs,, [ .text addl r15 = @ltoffx(x#), gp ;; ld8.mov r16 = [[r15]], x# ],, [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, [Define if your assembler supports ltoffx and ldxmov relocations.])]) ;; powerpc*-*-*) case $target in *-*-darwin*) gcc_GAS_CHECK_FEATURE([.machine directive support], gcc_cv_as_machine_directive,, [ .machine ppc7400]) if test x$gcc_cv_as_machine_directive != xyes; then echo "*** This target requires an assembler supporting \".machine\"" >&2 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 test x$build = x$target && exit 1 fi ;; esac case $target in *-*-aix*) conftest_s=' .machine "pwr5" .csect .text[[PR]] mfcr 3,128';; *-*-darwin*) conftest_s=' .text mfcr r3,128';; *) conftest_s=' .machine power4 .text mfcr 3,128';; esac gcc_GAS_CHECK_FEATURE([mfcr field support], gcc_cv_as_powerpc_mfcrf,, [$conftest_s],, [AC_DEFINE(HAVE_AS_MFCRF, 1, [Define if your assembler supports mfcr field.])]) case $target in *-*-aix*) conftest_s=' .csect .text[[PR]] LCF..0: addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; *-*-darwin*) conftest_s=' .text LCF0: addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; *) conftest_s=' .text .LCF0: addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; esac gcc_GAS_CHECK_FEATURE([rel16 relocs], gcc_cv_as_powerpc_rel16, -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_REL16, 1, [Define if your assembler supports R_PPC_REL16 relocs.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr7" .csect .text[[PR]] lxvd2x 1,2,3';; *) conftest_s=' .machine power7 .text lxvd2x 1,2,3';; esac gcc_GAS_CHECK_FEATURE([vector-scalar support], gcc_cv_as_powerpc_vsx, -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_VSX, 1, [Define if your assembler supports VSX instructions.])]) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_powerpc_gnu_attribute,, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([prologue entry point marker support], gcc_cv_as_powerpc_entry_markers,-a64 --fatal-warnings, [ .reloc .,R_PPC64_ENTRY; nop],, [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) gcc_GAS_CHECK_FEATURE([plt sequence marker support], gcc_cv_as_powerpc_pltseq_markers,-a32 --fatal-warnings, [ .reloc .,R_PPC_PLTSEQ; nop],, [AC_DEFINE(HAVE_AS_PLTSEQ, 1, [Define if your assembler supports R_PPC*_PLTSEQ relocations.])]) case $target in *-*-aix*) gcc_GAS_CHECK_FEATURE([AIX .ref support], gcc_cv_as_aix_ref,, [ .csect stuff[[rw]] stuff: .long 1 .extern sym .ref sym ],, [AC_DEFINE(HAVE_AS_REF, 1, [Define if your assembler supports .ref])]) gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], gcc_cv_as_aix_dwloc,, [ .dwsect 0xA0000 Lframe..0: .vbyte 4,Lframe..0 ],, [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, [Define if your assembler supports AIX debug frame section label reference.])]) ;; esac ;; mips*-*-*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_mips_explicit_relocs,, [ lw $4,%gp_rel(foo)($4)],, [if test x$target_cpu_default = x then target_cpu_default=MASK_EXPLICIT_RELOCS else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" fi]) gcc_GAS_CHECK_FEATURE([-mno-shared support], gcc_cv_as_mips_no_shared,[-mno-shared], [nop],, [AC_DEFINE(HAVE_AS_NO_SHARED, 1, [Define if the assembler understands -mno-shared.])]) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_mips_gnu_attribute,, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([.module support], gcc_cv_as_mips_dot_module,[-32], [.module mips2 .module fp=xx],, [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, [Define if your assembler supports .module.])]) if test x$gcc_cv_as_mips_dot_module = xno \ && test x$with_fp_32 != x; then AC_MSG_ERROR( [Requesting --with-fp-32= requires assembler support for .module.]) fi gcc_GAS_CHECK_FEATURE([.micromips support], gcc_cv_as_micromips_support,[--fatal-warnings], [.set micromips],, [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, [Define if your assembler supports the .set micromips directive])]) gcc_GAS_CHECK_FEATURE([.dtprelword support], gcc_cv_as_mips_dtprelword,, [.section .tdata,"awT",@progbits x: .word 2 .text .dtprelword x+0x8000],, [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, [Define if your assembler supports .dtprelword.])]) gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], gcc_cv_as_mips_dspr1_mult,, [ .set mips32r2 .set nodspr2 .set dsp madd $ac3,$4,$5 maddu $ac3,$4,$5 msub $ac3,$4,$5 msubu $ac3,$4,$5 mult $ac3,$4,$5 multu $ac3,$4,$5],, [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, [Define if your assembler supports DSPR1 mult.])]) AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) gcc_cv_as_ld_jalr_reloc=no if test $gcc_cv_as_mips_explicit_relocs = yes; then if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_as_ld_jalr_reloc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then echo ' .ent x' > conftest.s echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s echo ' lw $25,%call16(y)($28)' >> conftest.s echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s echo '1: jalr $25' >> conftest.s echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s echo '1: jalr $25' >> conftest.s echo ' .end x' >> conftest.s if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ && $gcc_cv_objdump -d conftest.so | grep "bal.*" >/dev/null 2>&1; then gcc_cv_as_ld_jalr_reloc=yes fi fi rm -f conftest.* fi fi if test $gcc_cv_as_ld_jalr_reloc = yes; then if test x$target_cpu_default = x; then target_cpu_default=MASK_RELAX_PIC_CALLS else target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" fi fi AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) AC_CACHE_CHECK([linker for .eh_frame personality relaxation], [gcc_cv_ld_mips_personality_relaxation], [gcc_cv_ld_mips_personality_relaxation=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 \ -a "$gcc_cv_gld_minor_version" -ge 21 \ -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_mips_personality_relaxation=yes fi elif test x$gcc_cv_as != x \ -a x$gcc_cv_ld != x \ -a x$gcc_cv_readelf != x ; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then if $gcc_cv_readelf -d conftest 2>&1 \ | grep TEXTREL > /dev/null 2>&1; then : elif $gcc_cv_readelf --relocs conftest 2>&1 \ | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then : else gcc_cv_ld_mips_personality_relaxation=yes fi fi fi rm -f conftest.s conftest.o conftest]) if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, [Define if your linker can relax absolute .eh_frame personality pointers into PC-relative form.]) fi gcc_GAS_CHECK_FEATURE([-mnan= support], gcc_cv_as_mips_nan, [-mnan=2008],,, [AC_DEFINE(HAVE_AS_NAN, 1, [Define if the assembler understands -mnan=.])]) if test x$gcc_cv_as_mips_nan = xno \ && test x$with_nan != x; then AC_MSG_ERROR( [Requesting --with-nan= requires assembler support for -mnan=]) fi ;; msp430-*-*) # Earlier GAS versions generically support .gnu_attribute, but the # msp430 assembler will not do anything with it. gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_msp430_gnu_attribute,, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([.mspabi_attribute support], gcc_cv_as_msp430_mspabi_attribute,, [.mspabi_attribute 4,2],, [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1, [Define if your assembler supports .mspabi_attribute.])]) if test x$enable_newlib_nano_formatted_io = xyes; then AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been configured with --enable-newlib-nano-formatted-io.]) fi ;; nios2-*-*) # Versions 2.33 and earlier lacked support for the %gotoff relocation # syntax that is documented in the ABI specification. gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data], gcc_cv_as_nios2_gotoff_relocation,, [ .extern foo .data .long %gotoff(foo)],, [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1, [Define if your assembler supports %gotoff relocation syntax.])]) ;; riscv*-*-*) gcc_GAS_CHECK_FEATURE([.attribute support], gcc_cv_as_riscv_attribute,, [.attribute stack_align,4],, [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1, [Define if your assembler supports .attribute.])]) gcc_GAS_CHECK_FEATURE([-misa-spec= support], gcc_cv_as_riscv_isa_spec, [-misa-spec=2.2],,, [AC_DEFINE(HAVE_AS_MISA_SPEC, 1, [Define if the assembler understands -misa-spec=.])]) gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support], gcc_cv_as_riscv_march_zifencei, [-march=rv32i_zifencei2p0],,, [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1, [Define if the assembler understands -march=rv*_zifencei.])]) ;; loongarch*-*-*) gcc_GAS_CHECK_FEATURE([.dtprelword support], gcc_cv_as_loongarch_dtprelword, [2,18,0],, [.section .tdata,"awT",@progbits x: .word 2 .text .dtprelword x+0x8000],, [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, [Define if your assembler supports .dtprelword.])]) ;; s390*-*-*) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_s390_gnu_attribute,, [.gnu_attribute 8,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], gcc_cv_as_s390_machine_machinemode,, [ .machinemode push .machinemode pop .machine push .machine pop],, [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, [Define if your assembler supports .machine and .machinemode.])]) gcc_GAS_CHECK_FEATURE([architecture modifiers support], gcc_cv_as_s390_architecture_modifiers,, [ .machine z13+vx ],, [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, [Define if your assembler supports architecture modifiers.])]) gcc_GAS_CHECK_FEATURE([vector load/store alignment hints], gcc_cv_as_s390_vector_loadstore_alignment_hints,, [ vl %v24,0(%r15),3 ],, [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1, [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])]) gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13], gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13, [-mzarch -march=z13], [ vl %v24,0(%r15),3 ],, [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1, [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])]) ;; esac # Mips, LoongArch and HP-UX need the GNU assembler. # Linux on IA64 might be able to use the Intel assembler. case "$target" in mips*-*-* | loongarch*-*-* | *-*-hpux* ) if test x$gas_flag = xyes \ || test x"$host" != x"$build" \ || test ! -x "$gcc_cv_as" \ || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then : else echo "*** This configuration requires the GNU assembler" >&2 exit 1 fi ;; esac # This tests if the assembler supports two registers for global_load functions # (like in LLVM versions <12) or one register (like in LLVM 12). case "$target" in amdgcn-* | gcn-*) AC_MSG_CHECKING(assembler fix for global_load functions) gcc_cv_as_gcn_global_load_fixed=yes if test x$gcc_cv_as != x; then cat > conftest.s < /dev/null 2>&1; then gcc_cv_as_gcn_global_load_fixed=no fi rm -f conftest.s conftest.o conftest fi global_load_fixed=`if test x$gcc_cv_as_gcn_global_load_fixed = xyes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GCN_ASM_GLOBAL_LOAD_FIXED, $global_load_fixed, [Define if your assembler has fixed global_load functions.]) AC_MSG_RESULT($gcc_cv_as_gcn_global_load_fixed) ;; esac case "$target" in amdgcn-* | gcn-*) # Test the LLVM assembler syntax dialect; they have made a number of # changes between LLVM 12 & 13 without any backward compatibility. gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v2/3 syntax], gcc_cv_as_gcn_asm_v3_syntax, [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack], [.amdgcn_target "amdgcn-unknown-amdhsa--gfx906+xnack"],, [AC_DEFINE(HAVE_GCN_ASM_V3_SYNTAX, 1, [Define if your assembler expects amdgcn_target gfx908+xnack syntax.])]) gcc_GAS_CHECK_FEATURE([assembler amdgcn_target v4 syntax], gcc_cv_as_gcn_asm_v4_syntax, [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack], [.amdgcn_target "amdgcn-unknown-amdhsa--gfx908:xnack+"],, [AC_DEFINE(HAVE_GCN_ASM_V4_SYNTAX, 1, [Define if your assembler expects amdgcn_target gfx908:xnack+ syntax.])]) # Some attribute names changed in the move to v4 ... if test $gcc_cv_as_gcn_asm_v3_syntax = yes; then sramopt="+sram-ecc" sramattr="+sram-ecc" xnackattr="+xnack" elif test $gcc_cv_as_gcn_asm_v4_syntax = yes; then sramopt="+sramecc" sramattr=":sramecc+" xnackattr=":xnack+" else AC_MSG_ERROR([Unrecognised assembler version]) fi # Test whether the LLVM assembler accepts -mattr=+xnack without any # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not, # LLVM 12+ throws a warning for GPUs without support. gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for fiji], gcc_cv_as_gcn_xnack_ecc_fiji, [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=+xnack 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_xnack_ecc_fiji=yes], [AC_DEFINE(HAVE_GCN_XNACK_FIJI, 1, [Define if your assembler allows -mattr=+xnack for fiji.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx900], gcc_cv_as_gcn_xnack_ecc_gfx900, [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+xnack 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_xnack_ecc_gfx900=yes], [AC_DEFINE(HAVE_GCN_XNACK_GFX900, 1, [Define if your assembler allows -mattr=+xnack for gfx900.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx906], gcc_cv_as_gcn_xnack_ecc_gfx906, [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=+xnack 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_xnack_ecc_gfx906=yes], [AC_DEFINE(HAVE_GCN_XNACK_GFX906, 1, [Define if your assembler allows -mattr=+xnack for gfx906.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=+xnack for gfx908], gcc_cv_as_gcn_xnack_ecc_gfx908, [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=+xnack 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_xnack_ecc_gfx908=yes], [AC_DEFINE(HAVE_GCN_XNACK_GFX908, 1, [Define if your assembler allows -mattr=+xnack for gfx908.])]) rm -f conftest.err # Test whether the LLVM assembler accepts -mattr=+sramecc without any # diagnostic. LLVM 9 & 10 accept the option whether it makes sense or not, # (some?) LLVM 12 rejects it for all GPUs, and LLVM13 throws a warning # for GPUs without support. gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for fiji], gcc_cv_as_gcn_sram_ecc_fiji, [-triple=amdgcn--amdhsa -mcpu=fiji -mattr=$sramopt 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_sram_ecc_fiji=yes], [AC_DEFINE(HAVE_GCN_SRAM_ECC_FIJI, 1, [Define if your assembler allows -mattr=+sramecc for fiji.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx900], gcc_cv_as_gcn_sram_ecc_gfx900, [-triple=amdgcn--amdhsa -mcpu=gfx900 -mattr=$sramopt 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_sram_ecc_gfx900=yes], [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX900, 1, [Define if your assembler allows -mattr=+sramecc for gfx900.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx906], gcc_cv_as_gcn_sram_ecc_gfx906, [-triple=amdgcn--amdhsa -mcpu=gfx906 -mattr=$sramopt 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_sram_ecc_gfx906=yes], [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX906, 1, [Define if your assembler allows -mattr=+sramecc for gfx906.])]) rm -f conftest.err gcc_GAS_CHECK_FEATURE([assembler accepts -mattr=$sramopt for gfx908], gcc_cv_as_gcn_sram_ecc_gfx908, [-triple=amdgcn--amdhsa -mcpu=gfx908 -mattr=$sramopt 2>conftest.err], [], [grep "." conftest.err >&AS_MESSAGE_LOG_FD \ || gcc_cv_as_gcn_sram_ecc_gfx908=yes], [AC_DEFINE(HAVE_GCN_SRAM_ECC_GFX908, 1, [Define if your assembler allows -mattr=+sramecc for gfx908.])]) rm -f conftest.err ;; arm*) gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions], gcc_cv_as_arm_option_extensions, [-march=armv8.1-m.main+mve], [.text .thumb .syntax unified vmov.f32 s0, s1],, [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1, [Define if your Arm assembler permits context-specific feature extensions.])]) esac # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any # info to the output file. So, as supported targets are added to gas 2.11, # add some instruction here to (also) show we expect this might work. # ??? Once 2.11 is released, probably need to add first known working # version to the per-target configury. case "$cpu_type" in aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | loongarch | m32c \ | m68k | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \ | tilegx | tilepro | visium | xstormy16 | xtensa) insn="nop" ;; ia64 | s390) insn="nop 0" ;; mmix) insn="swym 0" ;; esac if test x"$insn" != x; then conftest_s="\ .file 1 \"conftest.s\" .loc 1 3 0 $insn" gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], gcc_cv_as_dwarf2_debug_line,, [$conftest_s], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -h conftest.o 2> /dev/null \ | grep debug_line > /dev/null 2>&1; then gcc_cv_as_dwarf2_debug_line=yes elif test x$gcc_cv_otool != x \ && $gcc_cv_otool -l conftest.o 2> /dev/null \ | grep debug_line > /dev/null 2>&1; then gcc_cv_as_dwarf2_debug_line=yes fi]) # The .debug_line file table must be in the exact order that # we specified the files, since these indices are also used # by DW_AT_decl_file. Approximate this test by testing if # the assembler bitches if the same index is assigned twice. gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], gcc_cv_as_dwarf2_file_buggy,, [ .file 1 "foo.s" .file 1 "bar.s"]) if test $gcc_cv_as_dwarf2_debug_line = yes \ && test $gcc_cv_as_dwarf2_file_buggy = no; then AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, [Define if your assembler supports dwarf2 .file/.loc directives, and preserves file table indices exactly as given.]) if test $gcc_cv_as_leb128 = yes; then conftest_s="\ .file 1 \"conftest.s\" .loc 1 3 0 view .LVU1 $insn .data .uleb128 .LVU1 .uleb128 .LVU1 " gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support], gcc_cv_as_dwarf2_debug_view,, [$conftest_s],, [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1, [Define if your assembler supports views in dwarf2 .loc directives.])]) fi fi gcc_GAS_CHECK_FEATURE([--gdwarf2 option], gcc_cv_as_gdwarf2_flag, [--gdwarf2], [$insn],, [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, [Define if your assembler supports the --gdwarf2 option.])]) gcc_GAS_CHECK_FEATURE([--gdwarf-5 option], gcc_cv_as_gdwarf_5_flag, [--gdwarf-5], [$insn], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -Wi conftest.o 2>&1 \ | grep DW_TAG_compile_unit > /dev/null 2>&1; then gcc_cv_as_gdwarf_5_flag=yes; fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1, [Define if your assembler supports the --gdwarf-5 option.])]) case $target_os in win32 | pe | cygwin* | mingw32*) section_flags=\"dr\" function_type=".def foo; .scl 2; .type 32; .endef" function_size="";; *) section_flags=\"\",%progbits function_type=".type foo, %function" function_size=".size foo, .-foo";; esac dwarf4_debug_info_size=0x46 dwarf4_high_pc_form=7 dwarf4_debug_aranges_size=0x2c dwarf4_line_sz=9 for dwarf4_addr_size in 8 4; do conftest_s="\ .file \"a.c\" .text .Ltext0: .p2align 4 .globl foo $function_type foo: .LFB0: .LM1: $insn .LM2: .LFE0: $function_size .Letext0: .section .debug_info,$section_flags .Ldebug_info0: .4byte $dwarf4_debug_info_size .2byte 0x4 .4byte .Ldebug_abbrev0 .byte 0x$dwarf4_addr_size .byte 0x1 .ascii \"GNU C17\\0\" .byte 0xc .ascii \"a.c\\0\" .ascii \"/\\0\" .${dwarf4_addr_size}byte .Ltext0 .${dwarf4_addr_size}byte .Letext0-.Ltext0 .4byte .Ldebug_line0 .byte 0x2 .ascii \"foo\\0\" .byte 0x1 .byte 0x2 .byte 0x1 .${dwarf4_addr_size}byte .LFB0 .${dwarf4_addr_size}byte .LFE0-.LFB0 .byte 0x1 .byte 0x9c .byte 0 .section .debug_abbrev,$section_flags .Ldebug_abbrev0: .byte 0x1 .byte 0x11 .byte 0x1 .byte 0x25 .byte 0x8 .byte 0x13 .byte 0xb .byte 0x3 .byte 0x8 .byte 0x1b .byte 0x8 .byte 0x11 .byte 0x1 .byte 0x12 .byte 0x$dwarf4_high_pc_form .byte 0x10 .byte 0x17 .byte 0 .byte 0 .byte 0x2 .byte 0x2e .byte 0 .byte 0x3f .byte 0x19 .byte 0x3 .byte 0x8 .byte 0x3a .byte 0xb .byte 0x3b .byte 0xb .byte 0x39 .byte 0xb .byte 0x11 .byte 0x1 .byte 0x12 .byte 0x$dwarf4_high_pc_form .byte 0x40 .byte 0x18 .byte 0 .byte 0 .byte 0 .section .debug_aranges,$section_flags .4byte $dwarf4_debug_aranges_size .2byte 0x2 .4byte .Ldebug_info0 .byte 0x8 .byte 0 .2byte 0 .2byte 0 .${dwarf4_addr_size}byte .Ltext0 .${dwarf4_addr_size}byte .Letext0-.Ltext0 .${dwarf4_addr_size}byte 0 .${dwarf4_addr_size}byte 0 .section .debug_line,$section_flags .Ldebug_line0: .4byte .LELT0-.LSLT0 .LSLT0: .2byte 0x4 .4byte .LELTP0-.LASLTP0 .LASLTP0: .byte 0x1 .byte 0x1 .byte 0x1 .byte 0xf6 .byte 0xf2 .byte 0xd .byte 0 .byte 0x1 .byte 0x1 .byte 0x1 .byte 0x1 .byte 0 .byte 0 .byte 0 .byte 0x1 .byte 0 .byte 0 .byte 0x1 .byte 0 .ascii \"a.c\\0\" .byte 0 .byte 0 .byte 0 .byte 0 .LELTP0: .byte 0 .byte 0x$dwarf4_line_sz .byte 0x2 .${dwarf4_addr_size}byte .LM1 .byte 0x18 .byte 0x5 .byte 0x1 .byte 0 .byte 0x$dwarf4_line_sz .byte 0x2 .${dwarf4_addr_size}byte .LM2 .byte 0x1 .byte 0x5 .byte 0x1 .byte 0 .byte 0x$dwarf4_line_sz .byte 0x2 .${dwarf4_addr_size}byte .Letext0 .byte 0 .byte 0x1 .byte 0x1 .LELT0: .section .debug_str,$section_flags .ident \"GCC\" " dwarf4_success=no if test $dwarf4_addr_size = 4; then gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line], gcc_cv_as_debug_line_32_flag,, [$conftest_s],, [dwarf4_success=yes]) else gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line], gcc_cv_as_debug_line_64_flag,, [$conftest_s],, [dwarf4_success=yes]) fi if test $dwarf4_success = yes; then dwarf4_success=no gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line], gcc_cv_as_dwarf_4_debug_line_flag, [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes]) break fi dwarf4_debug_info_size=0x36 dwarf4_high_pc_form=6 dwarf4_debug_aranges_size=0x1c dwarf4_line_sz=5 done if test $dwarf4_success = yes; then conftest_s="\ .file \"foo.c\" .text bar: #APP # 82 \"xxx.h\" 1 $insn # 0 \"\" 2 #NO_APP $insn foo: .file 1 \"foo.c\" $insn .file 2 \"foo.h\" ret " dwarf4_success=no gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker], gcc_cv_as_dwarf_4_app_flag, [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes]) fi if test $dwarf4_success = yes; then conftest_s="\ .text .globl foo $function_type foo: $insn $function_size .file 1 \"foo.c\" " gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources], gcc_cv_as_working_gdwarf_n_flag, [--gdwarf-4], [$conftest_s], [changequote(,)dnl if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -W conftest.o 2>&1 \ | grep conftest.s > /dev/null 2>&1; then gcc_cv_as_working_gdwarf_n_flag=no else gcc_cv_as_working_gdwarf_n_flag=yes fi changequote([,])dnl]) if test $gcc_cv_as_working_gdwarf_n_flag = yes; then AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1, [Define if your assembler supports --gdwarf-4/--gdwarf-5 even with compiler generated .debug_line.]) fi fi gcc_GAS_CHECK_FEATURE([--gstabs option], gcc_cv_as_gstabs_flag, [--gstabs], [$insn],, [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, [Define if your assembler supports the --gstabs option.])]) gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], gcc_cv_as_debug_prefix_map_flag, [--debug-prefix-map /a=/b], [$insn],, [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, [Define if your assembler supports the --debug-prefix-map option.])]) fi gcc_GAS_CHECK_FEATURE([compressed debug sections], gcc_cv_as_compress_debug,,, [# gas compiled without zlib cannot compress debug sections and warns # about it, but still exits successfully. So check for this, too. if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null then gcc_cv_as_compress_debug=0 # Since binutils 2.26, gas supports --compress-debug-sections=type, # defaulting to the ELF gABI format. elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=2 gcc_cv_as_compress_debug_option="--compress-debug-sections" gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" # Before binutils 2.26, gas only supported --compress-debug-options and # emitted the traditional GNU format. elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=1 gcc_cv_as_compress_debug_option="--compress-debug-sections" gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" else gcc_cv_as_compress_debug=0 fi]) AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, [Define to the level of your assembler's compressed debug section support.]) AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", [Define to the assembler option to enable compressed debug sections.]) AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", [Define to the assembler option to disable compressed debug sections.]) gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,, [.lcomm bar,4,16],, [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, [Define if your assembler supports .lcomm with an alignment field.])]) if test x$with_sysroot = x && test x$host = x$target \ && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ && test "$prefix" != "NONE"; then AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", [Define to PREFIX/include if cpp should also search that directory.]) fi # Determine the version of glibc, if any, used on the target. AC_MSG_CHECKING([for target glibc version]) AC_ARG_WITH([glibc-version], [AS_HELP_STRING([--with-glibc-version=M.N], [assume GCC used with glibc version M.N or later])], [ if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` else AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) fi], [ glibc_version_major=0 glibc_version_minor=0 [if test -f $target_header_dir/features.h \ && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` fi]]) AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], [GNU C Library major version number used on the target, or 0.]) AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], [GNU C Library minor version number used on the target, or 0.]) AC_ARG_ENABLE(gnu-unique-object, [AS_HELP_STRING([--enable-gnu-unique-object], [enable the use of the @gnu_unique_object ELF extension on glibc systems])], [case $enable_gnu_unique_object in yes | no) ;; *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. Valid choices are 'yes' and 'no'.]) ;; esac], [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,, [.type foo, '$target_type_format_char'gnu_unique_object],, # We need to unquote above to to use the definition from config.gcc. # Also check for ld.so support, i.e. glibc 2.11 or higher. [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] )]) if test x$enable_gnu_unique_object = xyes; then AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, [Define if your assembler supports @gnu_unique_object.]) fi AC_CACHE_CHECK([assembler for tolerance to line number 0], [gcc_cv_as_line_zero], [gcc_cv_as_line_zero=no if test "x$gcc_cv_as" != x; then { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && test "x`cat conftest.out`" = x then gcc_cv_as_line_zero=yes else echo "configure: failed program was" >&AS_MESSAGE_LOG_FD cat conftest.s >&AS_MESSAGE_LOG_FD echo "configure: error output was" >&AS_MESSAGE_LOG_FD cat conftest.out >&AS_MESSAGE_LOG_FD fi rm -f conftest.o conftest.s conftest.out fi]) if test "x$gcc_cv_as_line_zero" = xyes; then AC_DEFINE([HAVE_AS_LINE_ZERO], 1, [Define if the assembler won't complain about a line such as # 0 "" 2.]) fi AC_MSG_CHECKING(support for thin archives) thin_archive_support=no echo 'int main (void) { return 0; }' > conftest.c if ($AR --version | sed 1q | grep "GNU ar" \ && $CC $CFLAGS -c conftest.c \ && $AR rcT conftest.a conftest.o \ && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then thin_archive_support=yes fi rm -f conftest.c conftest.o conftest.a conftest AC_MSG_RESULT($thin_archive_support) AC_SUBST(thin_archive_support) AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) gcc_cv_ld_eh_frame_hdr=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_frame_hdr=yes fi elif test x$gcc_cv_ld != x; then if echo "$ld_ver" | grep GNU > /dev/null; then # Check if linker supports --eh-frame-hdr option if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then gcc_cv_ld_eh_frame_hdr=yes fi else case "$target" in *-*-solaris2*) # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then gcc_cv_ld_eh_frame_hdr=yes fi ;; esac fi fi GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, [Define if your linker supports .eh_frame_hdr.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) gcc_cv_ld_eh_frame_ciev3=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_frame_ciev3=yes fi elif test x$gcc_cv_ld != x; then if echo "$ld_ver" | grep GNU > /dev/null; then gcc_cv_ld_eh_frame_ciev3=yes if test 0"$ld_date" -lt 20040513; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2004-05-13, fail gcc_cv_ld_eh_frame_ciev3=no elif test "$ld_vers_major" -lt 2; then gcc_cv_ld_eh_frame_ciev3=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then gcc_cv_ld_eh_frame_ciev3=no fi fi else case "$target" in *-*-solaris2*) # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then gcc_cv_ld_eh_frame_ciev3=yes fi ;; esac fi fi AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) AC_MSG_CHECKING(linker position independent executable support) gcc_cv_ld_pie=no if test $in_tree_ld = yes ; then case "$target" in # Full PIE support on Solaris was only introduced in gld 2.26. *-*-solaris2*) gcc_gld_pie_min_version=26 ;; *) gcc_gld_pie_min_version=15 ;; esac if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_pie=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -pie option if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then gcc_cv_ld_pie=yes case "$target" in *-*-solaris2*) if echo "$ld_ver" | grep GNU > /dev/null \ && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then gcc_cv_ld_pie=no fi ;; esac else case "$target" in *-*-solaris2.1[[1-9]]*) # Solaris 11.3 added PIE support. if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then gcc_cv_ld_pie=yes fi ;; esac fi fi if test x"$gcc_cv_ld_pie" = xyes; then AC_DEFINE(HAVE_LD_PIE, 1, [Define if your linker supports PIE option.]) fi AC_MSG_RESULT($gcc_cv_ld_pie) AC_MSG_CHECKING(linker PIE support with copy reloc) gcc_cv_ld_pie_copyreloc=no if test $gcc_cv_ld_pie = yes ; then if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_pie_copyreloc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then # Check if linker supports -pie option with copy reloc case "$target" in i?86-*-linux* | x86_64-*-linux*) cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then gcc_cv_ld_pie_copyreloc=yes fi rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s ;; esac fi fi AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports -pie option with copy reloc.]) AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) gcc_cv_ld_eh_gc_sections=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_gc_sections=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then gcc_cv_ld_eh_gc_sections=no elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections=yes # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. if test x$gcc_cv_as_comdat_group != xyes; then gcc_cv_ld_eh_gc_sections=no cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then gcc_cv_ld_eh_gc_sections=no elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections=yes fi fi fi fi fi rm -f conftest.s conftest.o conftest fi case "$target" in hppa*-*-linux*) # ??? This apparently exposes a binutils bug with PC-relative relocations. gcc_cv_ld_eh_gc_sections=no ;; esac if test x$gcc_cv_ld_eh_gc_sections = xyes; then AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, [Define if your linker supports garbage collection of sections in presence of EH frames.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) AC_MSG_CHECKING(linker EH garbage collection of sections bug) gcc_cv_ld_eh_gc_sections_bug=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_gc_sections_bug=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then gcc_cv_ld_eh_gc_sections_bug=yes cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then : elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections_bug=no fi fi rm -f conftest.s conftest.o conftest fi if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, [Define if your linker has buggy garbage collection of sections support when .text.startup.foo like sections are used.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) AC_MSG_CHECKING(linker for compressed debug sections) # gold/gld support compressed debug sections since binutils 2.19/2.21 # In binutils 2.26, gld gained support for the ELF gABI format. if test $in_tree_ld = yes ; then gcc_cv_ld_compress_debug=0 if test $ld_is_mold = yes; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_compress_debug=1 fi elif echo "$ld_ver" | grep GNU > /dev/null; then if test $ld_is_mold = yes; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$ld_vers_major" -lt 2 \ || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then gcc_cv_ld_compress_debug=0 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then gcc_cv_ld_compress_debug=1 else gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" fi if test $ld_is_gold = yes; then gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" fi else changequote(,)dnl case "${target}" in *-*-solaris2*) # Introduced in Solaris 11.2. if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="-z compress-sections" else gcc_cv_ld_compress_debug=0 fi ;; *) # Assume linkers other than GNU ld don't support compessed debug # sections. gcc_cv_ld_compress_debug=0 ;; esac changequote([,])dnl fi AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, [Define to the level of your linker's compressed debug section support.]) AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", [Define to the linker option to enable compressed debug sections.]) AC_MSG_RESULT($gcc_cv_ld_compress_debug) if test x"$ld64_flag" = x"yes"; then # Set defaults for possibly untestable items. gcc_cv_ld64_export_dynamic=0 gcc_cv_ld64_platform_version=0 if test "$build" = "$host"; then darwin_try_test=1 else darwin_try_test=0 fi # On Darwin, because of FAT library support, it is often possible to execute # exes from compatible archs even when the host differs from the build system. case "$build","$host" in x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) darwin_try_test=1;; *) ;; esac # If the configurer specified a minimum ld64 version to be supported, then use # that to determine feature support. if test x"${gcc_cv_ld64_version}" != x; then AC_MSG_CHECKING(ld64 specified version) gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'` AC_MSG_RESULT($gcc_cv_ld64_major) if test "$gcc_cv_ld64_major" -ge 236; then gcc_cv_ld64_export_dynamic=1 fi if test "$gcc_cv_ld64_major" -ge 512; then gcc_cv_ld64_platform_version=1 fi elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then # If the version was not specified, try to find it. AC_MSG_CHECKING(linker version) if test x"${gcc_cv_ld64_version}" = x; then gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` fi AC_MSG_RESULT($gcc_cv_ld64_version) AC_MSG_CHECKING(linker for -export_dynamic support) gcc_cv_ld64_export_dynamic=1 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then gcc_cv_ld64_export_dynamic=0 fi AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) AC_MSG_CHECKING(linker for -platform_version support) gcc_cv_ld64_platform_version=1 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then gcc_cv_ld64_platform_version=0 fi AC_MSG_RESULT($gcc_cv_ld64_platform_version) fi if test x"${gcc_cv_ld64_version}" != x; then AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}", [Define to ld64 version.]) fi AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, [Define to 1 if ld64 supports '-export_dynamic'.]) AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version, [Define to 1 if ld64 supports '-platform_version'.]) fi if test x"$dsymutil_flag" = x"yes"; then # If the user specified a dsymutil path, then we will already have the # version string, otherwise, pick it up. if test x"$gcc_cv_dsymutil" = x; then AC_MSG_WARN([dsymutil is a required tool for this system, but not found]) dsymutil_vers="tool unspecified" elif test x"$dsymutil_vers" = x; then dsymutil_vers=`$gcc_cv_dsymutil -v /dev/null 2>&1` fi dsymutil_temp=`echo $dsymutil_vers | sed 1q` AC_MSG_CHECKING(dsymutil version "$dsymutil_temp") if echo $dsymutil_temp | grep dwarfutils- > /dev/null; then dsymutil_kind=DWARFUTILS dsymutil_vers=`echo $dsymutil_temp | sed 's/.*dwarfutils-\([[0-9\.]]*\).*/\1/'` elif echo $dsymutil_temp | grep clang- > /dev/null; then dsymutil_kind=CLANG dsymutil_vers=`echo $dsymutil_temp | sed 's/.*clang-\([[0-9\.]]*\).*/\1/'` elif echo $dsymutil_temp | grep 'LLVM version ' > /dev/null; then dsymutil_kind=LLVM dsymutil_vers=`echo $dsymutil_temp | sed 's/.*LLVM\ version\ \([[0-9\.]]*\).*/\1/'` else dsymutil_kind=UNKNOWN dsymutil_vers="0.0" fi dsymutil_major=`expr "$dsymutil_vers" : '\([[0-9]]*\)'` dsymutil_minor=`expr "$dsymutil_vers" : '[[0-9]]*\.\([[0-9]]*\)'` dsymutil_tiny=`expr "$dsymutil_vers" : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'` if test x"${dsymutil_minor}" = x; then dsymutil_minor=0 fi if test x"${dsymutil_tiny}" = x; then dsymutil_tiny=0 fi AC_DEFINE_UNQUOTED(DSYMUTIL_VERSION, [$dsymutil_kind,${dsymutil_major},${dsymutil_minor},${dsymutil_tiny}], [Define to the dsymutil version.]) AC_MSG_RESULT($dsymutil_vers : $dsymutil_kind ${dsymutil_major} ${dsymutil_minor} ${dsymutil_tiny} ) fi case $target_os in win32 | pe | cygwin* | mingw32*) AC_MSG_CHECKING(broken PE linker dwarf5 support) gcc_cv_ld_broken_pe_dwarf5=yes if test $in_tree_ld = yes ; then if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \ && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then gcc_cv_ld_broken_pe_dwarf5=no fi else if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then gcc_cv_ld_broken_pe_dwarf5=no fi fi if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1, [Define if the PE linker has broken DWARF 5 support.]) fi AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5) AC_MSG_CHECKING(PE linker --disable-dynamicbase support) gcc_cv_ld_disable_dynamicbase=no if test $in_tree_ld = yes; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 36 -o "$gcc_cv_gld_major_version" -gt 2; then \ gcc_cv_ld_disable_dynamicbase=yes fi else if $gcc_cv_ld --help 2>&1 | grep -q 'disable\-]dynamicbase' > /dev/null; then gcc_cv_ld_disable_dynamicbase=yes fi fi if test x"$gcc_cv_ld_disable_dynamicbase" = xyes; then AC_DEFINE(HAVE_LD_PE_DISABLE_DYNAMICBASE, 1, [Define if the PE linker supports --disable-dynamicbase option.]) fi AC_MSG_RESULT($gcc_cv_ld_disable_dynamicbase) ;; esac # -------- # UNSORTED # -------- AC_CACHE_CHECK(linker --as-needed support, gcc_cv_ld_as_needed, [gcc_cv_ld_as_needed=no gcc_cv_ld_as_needed_option='--as-needed' gcc_cv_ld_no_as_needed_option='--no-as-needed' if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_as_needed=yes if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then gcc_cv_ld_as_needed_option='--push-state --as-needed' gcc_cv_ld_no_as_needed_option='--pop-state' fi fi elif test x$gcc_cv_ld != x; then # Check if linker supports --as-needed and --no-as-needed options if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then gcc_cv_ld_as_needed=yes if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \ && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \ && echo "$ld_ver" | grep GNU > /dev/null \ && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then # Use these options only when both ld.bfd and ld.gold support # --push-state/--pop-state, which unfortunately wasn't added # at the same time. gcc_cv_ld_as_needed_option='--push-state --as-needed' gcc_cv_ld_no_as_needed_option='--pop-state' fi fi case "$target:$gnu_ld" in *-*-solaris2*:no) # Solaris 2 ld always supports -z ignore/-z record. Prefer the native # forms. gcc_cv_ld_as_needed=yes gcc_cv_ld_as_needed_option="-z ignore" gcc_cv_ld_no_as_needed_option="-z record" ;; esac fi # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses # dl_iterate_phdr, i.e. since Solaris 11. case "$target" in *-*-solaris2.1[[1-9]]*) case "$target" in i?86-*-* | x86_64-*-*) if echo "$ld_ver" | grep GNU > /dev/null; then # Doesn't work with gld on Solaris/x86 due to PR ld/12320. gcc_cv_ld_as_needed=no fi ;; esac ;; *-*-solaris2*) gcc_cv_ld_as_needed=no ;; esac ]) if test x"$gcc_cv_ld_as_needed" = xyes; then AC_DEFINE(HAVE_LD_AS_NEEDED, 1, [Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", [Define to the linker option to ignore unused dependencies.]) AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", [Define to the linker option to keep unused dependencies.]) fi AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) saved_LDFLAGS="$LDFLAGS" for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) done LDFLAGS="$saved_LDFLAGS" if test "x$gcc_cv_ld_clearcap" = xyes; then AC_DEFINE([HAVE_LD_CLEARCAP], 1, [Define if the linker supports clearing hardware capabilities via mapfile.]) AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) fi AC_MSG_RESULT($gcc_cv_ld_clearcap) case "$target" in powerpc*-*-*) case "$target" in *le-*-linux*) emul_name="-melf32lppc" ;; *) emul_name="-melf32ppc" ;; esac AC_CACHE_CHECK(linker .gnu.attributes long double support, gcc_cv_ld_ppc_attr, [gcc_cv_ld_ppc_attr=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_ppc_attr=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 \ -a "$gcc_cv_gld_minor_version" -ge 28 \ -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_ppc_attr=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then # check that merging the long double .gnu_attribute doesn't warn cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ && test ! -s conftest.err; then gcc_cv_ld_ppc_attr=yes fi rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s fi ]) if test x$gcc_cv_ld_ppc_attr = xyes; then AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, [Define if your PowerPC linker has .gnu.attributes long double support.]) fi ;; esac case "$target:$tm_file" in powerpc64*-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) case "$target" in *le-*-linux*) emul_name="-melf64lppc" ;; *-*-linux*) emul_name="-melf64ppc" ;; *le-*-freebsd*) emul_name="-melf64lppc_fbsd" ;; *-*-freebsd*) emul_name="-melf64ppc_fbsd" ;; esac AC_CACHE_CHECK(linker support for omitting dot symbols, gcc_cv_ld_no_dot_syms, [gcc_cv_ld_no_dot_syms=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_no_dot_syms=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_no_dot_syms=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then gcc_cv_ld_no_dot_syms=yes fi rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s fi ]) if test x"$gcc_cv_ld_no_dot_syms" = xyes; then AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, [Define if your PowerPC64 linker only needs function descriptor syms.]) fi AC_CACHE_CHECK(linker large toc support, gcc_cv_ld_large_toc, [gcc_cv_ld_large_toc=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_large_toc=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_large_toc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_ld_large_toc=yes fi rm -f conftest conftest.o conftest.s fi ]) if test x"$gcc_cv_ld_large_toc" = xyes; then AC_DEFINE(HAVE_LD_LARGE_TOC, 1, [Define if your PowerPC64 linker supports a large TOC.]) fi AC_CACHE_CHECK(linker toc pointer alignment, gcc_cv_ld_toc_align, [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` fi rm -f conftest conftest.o conftest.s fi ]) if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, [Define to .TOC. alignment forced by your linker.]) fi ;; esac case "$target" in *-*-aix*) AC_CACHE_CHECK(linker large toc support, gcc_cv_ld_large_toc, [gcc_cv_ld_large_toc=no if test x$gcc_cv_as != x ; then cat > conftest.s < /dev/null 2>&1; then gcc_cv_ld_large_toc=yes fi rm -f conftest conftest.o conftest.s fi ]) if test x"$gcc_cv_ld_large_toc" = xyes; then AC_DEFINE(HAVE_LD_LARGE_TOC, 1, [Define if your PowerPC64 linker supports a large TOC.]) fi ;; esac AC_CACHE_CHECK(linker --build-id support, gcc_cv_ld_buildid, [gcc_cv_ld_buildid=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a \ "$gcc_cv_gld_minor_version" -ge 18 -o \ "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_buildid=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then gcc_cv_ld_buildid=yes fi fi]) if test x"$gcc_cv_ld_buildid" = xyes; then AC_DEFINE(HAVE_LD_BUILDID, 1, [Define if your linker supports --build-id.]) fi AC_ARG_ENABLE(linker-build-id, [AS_HELP_STRING([--enable-linker-build-id], [compiler will always pass --build-id to linker])], [], enable_linker_build_id=no) if test x"$enable_linker_build_id" = xyes; then if test x"$gcc_cv_ld_buildid" = xyes; then AC_DEFINE(ENABLE_LD_BUILDID, 1, [Define if gcc should always pass --build-id to linker.]) else AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) fi fi # In binutils 2.21, GNU ld gained support for new emulations fully # supporting the Solaris 2 ABI. Detect their presence in the linker used. AC_CACHE_CHECK(linker *_sol2 emulation support, gcc_cv_ld_sol2_emulation, [gcc_cv_ld_sol2_emulation=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a \ "$gcc_cv_gld_minor_version" -ge 21 -o \ "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_sol2_emulation=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ grep _sol2 > /dev/null; then gcc_cv_ld_sol2_emulation=yes fi fi]) if test x"$gcc_cv_ld_sol2_emulation" = xyes; then AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, [Define if your linker supports the *_sol2 emulations.]) fi AC_CACHE_CHECK(linker --sysroot support, gcc_cv_ld_sysroot, [gcc_cv_ld_sysroot=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then gcc_cv_ld_sysroot=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then gcc_cv_ld_sysroot=yes fi fi]) if test x"$gcc_cv_ld_sysroot" = xyes; then AC_DEFINE(HAVE_LD_SYSROOT, 1, [Define if your linker supports --sysroot.]) fi case $target in *-*-solaris2*) # Check for system-provided CRTs on Solaris 11.x and Solaris 12. 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Currently, only GLIBC 2.23 and later support this. gcc_cv_libc_provides_hwcap_in_tcb=no case "$target" in powerpc*-*-linux*) GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], ) ;; esac if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1, [Define if your target C Library provides the AT_HWCAP value in the TCB]) fi # Check if the target LIBC handles PT_GNU_STACK. gcc_cv_libc_gnustack=unknown case "$target" in mips*-*-linux-musl*) gcc_cv_libc_gnustack=yes ;; mips*-*-linux*) GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], ) ;; esac if test x$gcc_cv_libc_gnustack = xyes; then AC_DEFINE(TARGET_LIBC_GNUSTACK, 1, [Define if your target C Library properly handles PT_GNU_STACK]) fi AC_MSG_CHECKING(dl_iterate_phdr in target C library) gcc_cv_target_dl_iterate_phdr=unknown case "$target" in *-*-solaris2*) # needs both a dl_iterate_phdr declaration and support for # compilation with largefile support. if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then gcc_cv_target_dl_iterate_phdr=yes else gcc_cv_target_dl_iterate_phdr=no fi ;; *-*-dragonfly* | *-*-freebsd*) if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then gcc_cv_target_dl_iterate_phdr=yes else gcc_cv_target_dl_iterate_phdr=no fi ;; *-linux-musl*) gcc_cv_target_dl_iterate_phdr=yes ;; esac GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) if test x$gcc_cv_target_dl_iterate_phdr = xyes; then AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, [Define if your target C library provides the `dl_iterate_phdr' function.]) fi AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) # We no longer support different GC mechanisms. Emit an error if # the user configures with --with-gc. AC_ARG_WITH(gc, [AS_HELP_STRING([--with-gc={page,zone}], [this option is not supported anymore. It used to choose the garbage collection mechanism to use with the compiler])], [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])], []) # Libraries to use on the host. This will normally be set by the top # level Makefile. Here we simply capture the value for our Makefile. if test -z "${HOST_LIBS+set}"; then HOST_LIBS= fi AC_SUBST(HOST_LIBS) # Use the system's zlib library. AM_ZLIB dnl Very limited version of automake's enable-maintainer-mode AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) dnl maintainer-mode is disabled by default AC_ARG_ENABLE(maintainer-mode, [AS_HELP_STRING([--enable-maintainer-mode], [enable make rules and dependencies not useful (and sometimes confusing) to the casual installer])], maintainer_mode=$enableval, maintainer_mode=no) AC_MSG_RESULT($maintainer_mode) if test "$maintainer_mode" = "yes"; then MAINT='' else MAINT='#' fi AC_SUBST(MAINT)dnl dnl Variables for tags utilities; copied from automake 1.16.4+'s init.m4 if test -z "$CTAGS"; then CTAGS=ctags fi AC_SUBST([CTAGS]) if test -z "$ETAGS"; then ETAGS=etags fi AC_SUBST([ETAGS]) if test -z "$CSCOPE"; then CSCOPE=cscope fi AC_SUBST([CSCOPE]) dnl Whether to prevent multiple front-ends from linking at the same time AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once]) AC_ARG_ENABLE(link-mutex, [AS_HELP_STRING([--enable-link-mutex], [avoid linking multiple front-ends at once to avoid thrashing on the build machine])], do_link_mutex=$enableval, do_link_mutex=no) AC_MSG_RESULT($do_link_mutex) if test "$do_link_mutex" = "yes"; then DO_LINK_MUTEX=true else DO_LINK_MUTEX=false fi AC_SUBST(DO_LINK_MUTEX) dnl Whether to prevent multiple GCC front-ends from linking at the same time AC_MSG_CHECKING([whether to serialize linking of multiple front-ends]) AC_ARG_ENABLE(link-serialization, [AS_HELP_STRING([--enable-link-serialization], [avoid linking multiple GCC front-ends at once using make dependencies to avoid thrashing on the build machine])], do_link_serialization=$enableval, do_link_serialization=no) AC_MSG_RESULT($do_link_serialization) case "$do_link_serialization" in yes) DO_LINK_SERIALIZATION=1;; [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]]) DO_LINK_SERIALIZATION=$do_link_serialization;; no) DO_LINK_SERIALIZATION=;; *) AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;; esac AC_SUBST(DO_LINK_SERIALIZATION) # -------------- # Language hooks # -------------- # Make empty files to contain the specs and options for each language. # Then add #include lines to for a compiler that has specs and/or options. subdirs= lang_opt_files= lang_specs_files= lang_tree_files= # These (without "all_") are set in each config-lang.in. # `language' must be a single word so is spelled singularly. all_languages= all_compilers= all_outputs='Makefile' # List of language configure and makefile fragments. all_lang_configurefrags= all_lang_makefrags= # Additional files for gengtype all_gtfiles="$target_gtfiles" # These are the languages that are set in --enable-languages, # and are available in the GCC tree. all_selected_languages= # Add the language fragments. # Languages are added via two mechanisms. 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AC_ARG_ENABLE(version-specific-runtime-libs, [AS_HELP_STRING([--enable-version-specific-runtime-libs], [specify that runtime libraries should be installed in a compiler-specific directory])]) # Substitute configuration variables AC_SUBST(subdirs) AC_SUBST(srcdir) AC_SUBST(all_compilers) AC_SUBST(all_gtfiles) AC_SUBST(all_lang_configurefrags) AC_SUBST(all_lang_makefrags) AC_SUBST(all_languages) AC_SUBST(all_selected_languages) AC_SUBST(build_exeext) AC_SUBST(build_install_headers_dir) AC_SUBST(build_xm_file_list) AC_SUBST(build_xm_include_list) AC_SUBST(build_xm_defines) AC_SUBST(build_file_translate) AC_SUBST(check_languages) AC_SUBST(selftest_languages) AC_SUBST(cpp_install_dir) AC_SUBST(xmake_file) AC_SUBST(tmake_file) AC_SUBST(TM_ENDIAN_CONFIG) AC_SUBST(TM_MULTILIB_CONFIG) AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) AC_SUBST(extra_gcc_objs) AC_SUBST(user_headers_inc_next_pre) AC_SUBST(user_headers_inc_next_post) AC_SUBST(extra_headers_list) AC_SUBST(extra_objs) AC_SUBST(extra_programs) AC_SUBST(float_h_file) AC_SUBST(gcc_config_arguments) AC_SUBST(gcc_gxx_include_dir) AC_SUBST(gcc_gxx_include_dir_add_sysroot) AC_SUBST(gcc_gxx_libcxx_include_dir) AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot) AC_SUBST(host_exeext) AC_SUBST(host_xm_file_list) AC_SUBST(host_xm_include_list) AC_SUBST(host_xm_defines) AC_SUBST(out_host_hook_obj) AC_SUBST(install) AC_SUBST(lang_opt_files) AC_SUBST(lang_specs_files) AC_SUBST(lang_tree_files) AC_SUBST(local_prefix) AC_SUBST(md_file) AC_SUBST(objc_boehm_gc) AC_SUBST(out_file) AC_SUBST(out_object_file) AC_SUBST(common_out_file) AC_SUBST(common_out_object_file) AC_SUBST(tm_file_list) AC_SUBST(tm_include_list) AC_SUBST(tm_defines) AC_SUBST(tm_p_file_list) AC_SUBST(tm_p_include_list) AC_SUBST(tm_d_file_list) AC_SUBST(tm_d_include_list) AC_SUBST(xm_file_list) AC_SUBST(xm_include_list) AC_SUBST(xm_defines) AC_SUBST(use_gcc_stdint) AC_SUBST(c_target_objs) AC_SUBST(cxx_target_objs) AC_SUBST(fortran_target_objs) AC_SUBST(d_target_objs) AC_SUBST(target_cpu_default) AC_SUBST_FILE(language_hooks) # Echo link setup. if test x${build} = x${host} ; then if test x${host} = x${target} ; then echo "Links are now set up to build a native compiler for ${target}." 1>&2 else echo "Links are now set up to build a cross-compiler" 1>&2 echo " from ${host} to ${target}." 1>&2 fi else if test x${host} = x${target} ; then echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 echo " for ${target}." 1>&2 else echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 echo " from ${host} to ${target}." 1>&2 fi fi AC_ARG_VAR(GMPLIBS,[How to link GMP]) AC_ARG_VAR(GMPINC,[How to find GMP include files]) AC_ARG_VAR(ISLLIBS,[How to link isl]) AC_ARG_VAR(ISLINC,[How to find isl include files]) if test "x${ISLLIBS}" != "x" ; then AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.]) fi GCC_ENABLE_PLUGINS AC_SUBST(pluginlibs) AC_SUBST(enable_plugin) if test x"$enable_plugin" = x"yes"; then AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) fi # Enable --enable-host-shared AC_ARG_ENABLE(host-shared, [AS_HELP_STRING([--enable-host-shared], [build host code as shared libraries])], [PICFLAG=-fPIC], [PICFLAG=]) AC_SUBST(enable_host_shared) AC_SUBST(PICFLAG) AC_ARG_ENABLE(libquadmath-support, [AS_HELP_STRING([--disable-libquadmath-support], [disable libquadmath support for Fortran])], ENABLE_LIBQUADMATH_SUPPORT=$enableval, ENABLE_LIBQUADMATH_SUPPORT=yes) if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, [Define to 1 to enable libquadmath support]) fi # Specify what hash style to use by default. AC_ARG_WITH([linker-hash-style], [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}], [specify the linker hash style])], [case x"$withval" in xsysv) LINKER_HASH_STYLE=sysv ;; xgnu) LINKER_HASH_STYLE=gnu ;; xboth) LINKER_HASH_STYLE=both ;; *) AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style]) ;; esac], [LINKER_HASH_STYLE='']) if test x"${LINKER_HASH_STYLE}" != x; then AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE", [The linker hash style]) fi # Specify what should be the default of -fdiagnostics-color option. AC_ARG_WITH([diagnostics-color], [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}], [specify the default of -fdiagnostics-color option auto-if-env stands for -fdiagnostics-color=auto if GCC_COLOR environment variable is present and -fdiagnostics-color=never otherwise])], [case x"$withval" in xnever) DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO ;; xauto) DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO ;; xauto-if-env) DIAGNOSTICS_COLOR_DEFAULT=-1 ;; xalways) DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES ;; *) AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color]) ;; esac], [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO]) AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT, [The default for -fdiagnostics-color option]) # Specify what should be the default of -fdiagnostics-urls option. AC_ARG_WITH([diagnostics-urls], [AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}], [specify the default of -fdiagnostics-urls option auto-if-env stands for -fdiagnostics-urls=auto if GCC_URLS or TERM_URLS environment variable is present and -fdiagnostics-urls=never otherwise])], [case x"$withval" in xnever) DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO ;; xauto) DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO ;; xauto-if-env) DIAGNOSTICS_URLS_DEFAULT=-1 ;; xalways) DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES ;; *) AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls]) ;; esac], [DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO]) AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT, [The default for -fdiagnostics-urls option]) # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit # of jit/jit-playback.cc. gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"` echo "gcc_driver_version: ${gcc_driver_version}" cat > gcc-driver-name.h <&1 | grep -- '-z bndplt' > /dev/null; then ld_bndplt_support=yes fi fi fi if test x"$ld_bndplt_support" = xyes; then AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1, [Define if your linker supports -z bndplt]) fi AC_MSG_RESULT($ld_bndplt_support) # Check linker supports '--push-state'/'--pop-state' ld_pushpopstate_support=no AC_MSG_CHECKING(linker --push-state/--pop-state options) if test x"$ld_is_gold" = xno; then if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then ld_pushpopstate_support=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports --push-state/--pop-state options if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then ld_pushpopstate_support=yes fi fi fi if test x"$ld_pushpopstate_support" = xyes; then AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1, [Define if your linker supports --push-state/--pop-state]) fi AC_MSG_RESULT($ld_pushpopstate_support) # On s390, float_t has historically been statically defined as double for no # good reason. To comply with the C standard in the light of this definition, # gcc has evaluated float expressions in double precision when in # standards-compatible mode or when given -fexcess-precision=standard. To enable # a smooth transition towards the new model used by most architectures, where # gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives # float_t from that, this behavior can be configured with # --enable-s390-excess-float-precision. When given as enabled, that flag selects # the old model. When omitted, native builds and cross compiles that have target # libc headers will detect whether libc clamps float_t to double and in that # case maintain the old model. Otherwise, they will default to the new model. AC_ARG_ENABLE(s390-excess-float-precision, [AS_HELP_STRING([--enable-s390-excess-float-precision], [on s390 targets, evaluate float with double precision when in standards-conforming mode])], [],[enable_s390_excess_float_precision=auto]) case $target in s390*-linux*) if test x"$enable_s390_excess_float_precision" = xauto; then # Can we autodetect the behavior of the target libc? if test "$target" = "$host" -a "$host" = "$build"; then enable_s390_excess_float_precision=autodetect elif test "x$with_headers" != xno; then # cross build. are target headers available? # carefully coerce the build-system compiler to use target headers saved_CXXFLAGS="$CXXFLAGS" fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'` CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET" CXXFLAGS="$CROSS_TEST_CXXFLAGS" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #include ]])], [enable_s390_excess_float_precision=autodetect], []) CXXFLAGS="$saved_CXXFLAGS" fi if test x"$enable_s390_excess_float_precision" = xautodetect; then saved_CXXFLAGS="$CXXFLAGS" if ! test "$target" = "$host" -a "$host" = "$build"; then CXXFLAGS="$CROSS_TEST_CXXFLAGS" unset CROSS_TEST_CXXFLAGS fi AC_CACHE_CHECK([for glibc clamping float_t to double], gcc_cv_float_t_clamped_to_double, [ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #define __FLT_EVAL_METHOD__ 0 #include int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1]; ]])], [gcc_cv_float_t_clamped_to_double=yes], [gcc_cv_float_t_clamped_to_double=no])]) CXXFLAGS="$saved_CXXFLAGS" enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double" else # no way to detect behavior of target libc, default to new model enable_s390_excess_float_precision=no fi fi GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION) if test x"$enable_s390_excess_float_precision" = xyes; then AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1, [Define to enable evaluating float expressions with double precision in standards-compatible mode on s390 targets.]) fi ;; esac # Configure the subdirectories # AC_CONFIG_SUBDIRS($subdirs) # Create the Makefile # and configure language subdirectories AC_CONFIG_FILES($all_outputs) AC_CONFIG_COMMANDS([default], [ case ${CONFIG_HEADERS} in *auto-host.h:config.in*) echo > cstamp-h ;; esac # Make sure all the subdirs exist. for d in $subdirs doc build common c-family do test -d $d || mkdir $d done ], [subdirs='$subdirs']) AC_OUTPUT