diff options
Diffstat (limited to 'libc/configure')
| -rwxr-xr-x | libc/configure | 629 |
1 files changed, 269 insertions, 360 deletions
diff --git a/libc/configure b/libc/configure index c7599df99..4b2d4c28c 100755 --- a/libc/configure +++ b/libc/configure @@ -567,42 +567,7 @@ PACKAGE_URL='http://www.gnu.org/software/glibc/' ac_unique_file="include/features.h" enable_option_checking=no -# Factoring default headers for most tests. -ac_includes_default="\ -#include <stdio.h> -#ifdef HAVE_SYS_TYPES_H -# include <sys/types.h> -#endif -#ifdef HAVE_SYS_STAT_H -# include <sys/stat.h> -#endif -#ifdef STDC_HEADERS -# include <stdlib.h> -# include <stddef.h> -#else -# ifdef HAVE_STDLIB_H -# include <stdlib.h> -# endif -#endif -#ifdef HAVE_STRING_H -# if !defined STDC_HEADERS && defined HAVE_MEMORY_H -# include <memory.h> -# endif -# include <string.h> -#endif -#ifdef HAVE_STRINGS_H -# include <strings.h> -#endif -#ifdef HAVE_INTTYPES_H -# include <inttypes.h> -#endif -#ifdef HAVE_STDINT_H -# include <stdint.h> -#endif -#ifdef HAVE_UNISTD_H -# include <unistd.h> -#endif" - +ac_includes_default='/* none */' ac_subst_vars='LTLIBOBJS LIBOBJS RELEASE @@ -632,9 +597,9 @@ libc_cv_localedir libc_cv_slibdir old_glibc_headers libc_cv_gcc_unwind_find_fde +libc_extra_cflags +CPPUNDEFS sizeof_long_double -EGREP -GREP have_selinux have_libcap have_libaudit @@ -788,6 +753,7 @@ with_bugurl enable_multi_arch enable_nss_crypt enable_obsolete_rpc +enable_systemtap with_cpu ' ac_precious_vars='build_alias @@ -1445,6 +1411,7 @@ Optional Features: --enable-nss-crypt enable libcrypt to use nss --enable-obsolete-rpc build and install the obsolete RPC code for link-time usage + --enable-systemtap enable systemtap static probe points [default=no] Optional Packages: --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] @@ -1934,37 +1901,6 @@ rm -f conftest.val as_fn_set_status $ac_retval } # ac_fn_c_compute_int - -# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES -# ------------------------------------------------------- -# Tests whether HEADER exists and can be compiled using the include files in -# INCLUDES, setting the cache variable VAR accordingly. -ac_fn_c_check_header_compile () -{ - as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack - { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5 -$as_echo_n "checking for $2... " >&6; } -if eval \${$3+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -$4 -#include <$2> -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - eval "$3=yes" -else - eval "$3=no" -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -eval ac_res=\$$3 - { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 -$as_echo "$ac_res" >&6; } - eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno - -} # ac_fn_c_check_header_compile cat >config.log <<_ACEOF This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. @@ -2350,6 +2286,9 @@ ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var. +# Glibc should not depend on any header files + + subdirs="$subdirs " @@ -3817,6 +3756,7 @@ else fi + # Check whether --enable-obsolete-rpc was given. if test "${enable_obsolete_rpc+set}" = set; then : enableval=$enable_obsolete_rpc; link_obsolete_rpc=$enableval @@ -3831,6 +3771,51 @@ if test "$link_obsolete_rpc" = yes; then fi +# Check whether --enable-systemtap was given. +if test "${enable_systemtap+set}" = set; then : + enableval=$enable_systemtap; systemtap=$enableval +else + systemtap=no +fi + +if test "x$systemtap" != xno; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for systemtap static probe support" >&5 +$as_echo_n "checking for systemtap static probe support... " >&6; } +if ${libc_cv_sdt+:} false; then : + $as_echo_n "(cached) " >&6 +else + old_CFLAGS="$CFLAGS" + CFLAGS="-std=gnu99 $CFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <sys/sdt.h> +void foo (int i, void *p) +{ + asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) "" + :: STAP_PROBE_ASM_OPERANDS (2, i, p)); +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + libc_cv_sdt=yes +else + libc_cv_sdt=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + CFLAGS="$old_CFLAGS" +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sdt" >&5 +$as_echo "$libc_cv_sdt" >&6; } + if test $libc_cv_sdt = yes; then + $as_echo "#define USE_STAP_PROBE 1" >>confdefs.h + + elif test "x$systemtap" != xauto; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "systemtap support needs sys/sdt.h with asm support +See \`config.log' for more details" "$LINENO" 5; } + fi +fi + # The way shlib-versions is used to generate soversions.mk uses a # fairly simplistic model for name recognition that can't distinguish # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os @@ -4396,60 +4381,61 @@ while test $# -gt 0; do test -n "$enable_debug_configure" && echo "DEBUG: name/Implies $xsrcdir$name/Implies" >&2 - if test -f $xsrcdir$name/Implies; then - # Collect more names from the `Implies' file (removing comments). - implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" - implied= - for x in $implied_candidate; do - found=no - if test -d $xsrcdir$name_base/$x; then - # If !OPTION_EGLIBC_LIBM_BIG, add ieee754/dbl-wrap just before - # ieee754/dbl-64. - if test "$use_dbl_wrap" = "0"; then - case $x in - ieee754/dbl-64) implied="$implied $name_base/ieee754/dbl-wrap" ;; - ieee754/ldbl-*) implied="$implied $name_base/ieee754/ldbl-wrap" ;; - esac - fi - implied="$implied $name_base/$x"; - found=yes - fi - for d in $add_ons_pfx ''; do - try="${d}sysdeps/$x" - case $d in - /*) try_srcdir= ;; - *) try_srcdir=$srcdir/ ;; - esac - test -n "$enable_debug_configure" && - echo "DEBUG: $name implied $x try($d) {$try_srcdir}$try" >&2 - if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; - then + for implies_file in Implies Implies-before Implies-after; do + implies_type=`echo $implies_file | sed s/-/_/` + eval ${implies_type}= + if test -f $xsrcdir$name/$implies_file; then + # Collect more names from the `Implies' file (removing comments). + implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" + for x in $implied_candidate; do + found=no + if test -d $xsrcdir$name_base/$x; then # If !OPTION_EGLIBC_LIBM_BIG, add ieee754/dbl-wrap just before # ieee754/dbl-64. if test "$use_dbl_wrap" = "0"; then - case $try in - sysdeps/ieee754/dbl-64) - implied="$implied sysdeps/ieee754/dbl-wrap" ;; - sysdeps/ieee754/ldbl-*) - implied="$implied sysdeps/ieee754/ldbl-wrap" ;; + case $x in + ieee754/dbl-64) eval "${implies_type}=\"\$${implies_type} \$name_base/ieee754/dbl-wrap\"" ;; + ieee754/ldbl-*) eval "${implies_type}=\"\$${implies_type} \$name_base/ieee754/ldbl-wrap\"" ;; esac fi - implied="$implied $try" + eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" found=yes - case "$sysnames_add_ons" in - *" $d "*) ;; - *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; + fi + for d in $add_ons_pfx ''; do + try="${d}sysdeps/$x" + case $d in + /*) try_srcdir= ;; + *) try_srcdir=$srcdir/ ;; esac + test -n "$enable_debug_configure" && + echo "DEBUG: $name $implies_file $x try($d) {$try_srcdir}$try" >&2 + if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; + then + # If !OPTION_EGLIBC_LIBM_BIG, add ieee754/dbl-wrap just before + # ieee754/dbl-64. + if test "$use_dbl_wrap" = "0"; then + case $try in + sysdeps/ieee754/dbl-64) + eval "${implies_type}=\"\$${implies_type} sysdeps/ieee754/dbl-wrap\"" ;; + sysdeps/ieee754/ldbl-*) + eval "${implies_type}=\"\$${implies_type} sysdeps/ieee754/ldbl-wrap\"" ;; + esac + fi + eval "${implies_type}=\"\$${implies_type} \$try\"" + found=yes + case "$sysnames_add_ons" in + *" $d "*) ;; + *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; + esac + fi + done + if test $found = no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5 +$as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;} fi done - if test $found = no; then - { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/Implies specifies nonexistent $x" >&5 -$as_echo "$as_me: WARNING: $name/Implies specifies nonexistent $x" >&2;} - fi - done - else - implied= - fi + fi + done # Add NAME to the list of names. names="$names $name" @@ -4457,6 +4443,10 @@ $as_echo "$as_me: WARNING: $name/Implies specifies nonexistent $x" >&2;} # Find the parent of NAME, using the empty string if it has none. parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" + test -n "$enable_debug_configure" && + echo "DEBUG: $name Implies='$Implies' rest='$*' parent='$parent' \ +Implies_before='$Implies_after' Implies_after='$Implies_after'" >&2 + # Add the names implied by NAME, and NAME's parent (if it has one), to # the list of names to be processed (the argument list). We prepend the # implied names to the list and append the parent. We want implied @@ -4464,7 +4454,7 @@ $as_echo "$as_me: WARNING: $name/Implies specifies nonexistent $x" >&2;} # configuration components; this ensures that for sysv4, unix/common # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) # after sysv4). - sysnames="`echo $implied $* $parent`" + sysnames="`echo $Implies $* $Implies_before $parent $Implies_after`" test -n "$sysnames" && set $sysnames done @@ -5072,7 +5062,7 @@ $as_echo_n "checking version of $MAKEINFO... " >&6; } ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'` case $ac_prog_version in '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; - 4.*) + 4.[5-9]*|4.[1-9][0-9]*|[5-9].*) ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;; *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;; @@ -5240,6 +5230,98 @@ else READELF="$ac_cv_prog_READELF" fi +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}nm", so it can be a program name with args. +set dummy ${ac_tool_prefix}nm; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_NM+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$NM"; then + ac_cv_prog_NM="$NM" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_NM="${ac_tool_prefix}nm" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +NM=$ac_cv_prog_NM +if test -n "$NM"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NM" >&5 +$as_echo "$NM" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_NM"; then + ac_ct_NM=$NM + # Extract the first word of "nm", so it can be a program name with args. +set dummy nm; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_NM+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_NM"; then + ac_cv_prog_ac_ct_NM="$ac_ct_NM" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then + ac_cv_prog_ac_ct_NM="nm" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_NM=$ac_cv_prog_ac_ct_NM +if test -n "$ac_ct_NM"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NM" >&5 +$as_echo "$ac_ct_NM" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_NM" = x; then + NM="false" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + NM=$ac_ct_NM + fi +else + NM="$ac_cv_prog_NM" +fi + for ac_prog in autoconf do @@ -7313,299 +7395,126 @@ fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5 -$as_echo_n "checking for grep that handles long lines and -e... " >&6; } -if ${ac_cv_path_GREP+:} false; then : +# The cast to long int works around a bug in the HP C Compiler +# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects +# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. +# This bug is HP SR number 8606223364. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long double" >&5 +$as_echo_n "checking size of long double... " >&6; } +if ${ac_cv_sizeof_long_double+:} false; then : $as_echo_n "(cached) " >&6 else - if test -z "$GREP"; then - ac_path_GREP_found=false - # Loop through the user's path and test for each of PROGNAME-LIST - as_save_IFS=$IFS; IFS=$PATH_SEPARATOR -for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin -do - IFS=$as_save_IFS - test -z "$as_dir" && as_dir=. - for ac_prog in grep ggrep; do - for ac_exec_ext in '' $ac_executable_extensions; do - ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext" - { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue -# Check for GNU ac_path_GREP and select it if it is found. - # Check for GNU $ac_path_GREP -case `"$ac_path_GREP" --version 2>&1` in -*GNU*) - ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;; -*) - ac_count=0 - $as_echo_n 0123456789 >"conftest.in" - while : - do - cat "conftest.in" "conftest.in" >"conftest.tmp" - mv "conftest.tmp" "conftest.in" - cp "conftest.in" "conftest.nl" - $as_echo 'GREP' >> "conftest.nl" - "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break - diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break - as_fn_arith $ac_count + 1 && ac_count=$as_val - if test $ac_count -gt ${ac_path_GREP_max-0}; then - # Best one so far, save it but keep looking for a better one - ac_cv_path_GREP="$ac_path_GREP" - ac_path_GREP_max=$ac_count - fi - # 10*(2^10) chars as input seems more than enough - test $ac_count -gt 10 && break - done - rm -f conftest.in conftest.tmp conftest.nl conftest.out;; -esac + if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long double))" "ac_cv_sizeof_long_double" "$ac_includes_default"; then : - $ac_path_GREP_found && break 3 - done - done - done -IFS=$as_save_IFS - if test -z "$ac_cv_path_GREP"; then - as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 - fi else - ac_cv_path_GREP=$GREP + if test "$ac_cv_type_long_double" = yes; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "cannot compute sizeof (long double) +See \`config.log' for more details" "$LINENO" 5; } + else + ac_cv_sizeof_long_double=0 + fi fi fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5 -$as_echo "$ac_cv_path_GREP" >&6; } - GREP="$ac_cv_path_GREP" +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_double" >&5 +$as_echo "$ac_cv_sizeof_long_double" >&6; } -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5 -$as_echo_n "checking for egrep... " >&6; } -if ${ac_cv_path_EGREP+:} false; then : - $as_echo_n "(cached) " >&6 -else - if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 - then ac_cv_path_EGREP="$GREP -E" - else - if test -z "$EGREP"; then - ac_path_EGREP_found=false - # Loop through the user's path and test for each of PROGNAME-LIST - as_save_IFS=$IFS; IFS=$PATH_SEPARATOR -for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin -do - IFS=$as_save_IFS - test -z "$as_dir" && as_dir=. - for ac_prog in egrep; do - for ac_exec_ext in '' $ac_executable_extensions; do - ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" - { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue -# Check for GNU ac_path_EGREP and select it if it is found. - # Check for GNU $ac_path_EGREP -case `"$ac_path_EGREP" --version 2>&1` in -*GNU*) - ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; -*) - ac_count=0 - $as_echo_n 0123456789 >"conftest.in" - while : - do - cat "conftest.in" "conftest.in" >"conftest.tmp" - mv "conftest.tmp" "conftest.in" - cp "conftest.in" "conftest.nl" - $as_echo 'EGREP' >> "conftest.nl" - "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break - diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break - as_fn_arith $ac_count + 1 && ac_count=$as_val - if test $ac_count -gt ${ac_path_EGREP_max-0}; then - # Best one so far, save it but keep looking for a better one - ac_cv_path_EGREP="$ac_path_EGREP" - ac_path_EGREP_max=$ac_count - fi - # 10*(2^10) chars as input seems more than enough - test $ac_count -gt 10 && break - done - rm -f conftest.in conftest.tmp conftest.nl conftest.out;; -esac - $ac_path_EGREP_found && break 3 - done - done - done -IFS=$as_save_IFS - if test -z "$ac_cv_path_EGREP"; then - as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 - fi -else - ac_cv_path_EGREP=$EGREP -fi +cat >>confdefs.h <<_ACEOF +#define SIZEOF_LONG_DOUBLE $ac_cv_sizeof_long_double +_ACEOF - fi -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 -$as_echo "$ac_cv_path_EGREP" >&6; } - EGREP="$ac_cv_path_EGREP" +sizeof_long_double=$ac_cv_sizeof_long_double -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 -$as_echo_n "checking for ANSI C header files... " >&6; } -if ${ac_cv_header_stdc+:} false; then : + +CPPUNDEFS= +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FORTIFY_SOURCE predefine" >&5 +$as_echo_n "checking for _FORTIFY_SOURCE predefine... " >&6; } +if ${libc_cv_predef_fortify_source+:} false; then : $as_echo_n "(cached) " >&6 else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -#include <stdlib.h> -#include <stdarg.h> -#include <string.h> -#include <float.h> int main () { +#ifdef _FORTIFY_SOURCE +# error bogon +#endif ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : - ac_cv_header_stdc=yes + libc_cv_predef_fortify_source=no else - ac_cv_header_stdc=no + libc_cv_predef_fortify_source=yes fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - -if test $ac_cv_header_stdc = yes; then - # SunOS 4.x string.h does not declare mem*, contrary to ANSI. - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include <string.h> - -_ACEOF -if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | - $EGREP "memchr" >/dev/null 2>&1; then : - -else - ac_cv_header_stdc=no fi -rm -f conftest* - +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_predef_fortify_source" >&5 +$as_echo "$libc_cv_predef_fortify_source" >&6; } +if test $libc_cv_predef_fortify_source = yes; then + CPPUNDEFS="${CPPUNDEFS:+$CPPUNDEFS }-U_FORTIFY_SOURCE" fi -if test $ac_cv_header_stdc = yes; then - # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include <stdlib.h> - -_ACEOF -if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | - $EGREP "free" >/dev/null 2>&1; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC implicitly enables -fstack-protector" >&5 +$as_echo_n "checking whether $CC implicitly enables -fstack-protector... " >&6; } +if ${libc_cv_predef_stack_protector+:} false; then : + $as_echo_n "(cached) " >&6 else - ac_cv_header_stdc=no -fi -rm -f conftest* -fi - -if test $ac_cv_header_stdc = yes; then - # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. - if test "$cross_compiling" = yes; then : - : -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext +cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ -#include <ctype.h> -#include <stdlib.h> -#if ((' ' & 0x0FF) == 0x020) -# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') -# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) -#else -# define ISLOWER(c) \ - (('a' <= (c) && (c) <= 'i') \ - || ('j' <= (c) && (c) <= 'r') \ - || ('s' <= (c) && (c) <= 'z')) -# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) -#endif - -#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) +extern void foobar (char *); int main () { - int i; - for (i = 0; i < 256; i++) - if (XOR (islower (i), ISLOWER (i)) - || toupper (i) != TOUPPER (i)) - return 2; +char large_array[2048]; foobar (large_array); + ; return 0; } _ACEOF -if ac_fn_c_try_run "$LINENO"; then : +if ac_fn_c_try_compile "$LINENO"; then : +libc_undefs=`$NM -u conftest.o | + LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \ + 2>&5` || { + as_fn_error $? "confusing output from $NM -u" "$LINENO" 5 +} +echo >&5 "libc_undefs='$libc_undefs'" +# On some architectures, there are architecture-specific undefined +# symbols (resolved by the linker), so filter out unknown symbols. +# This will fail to produce the correct result if the compiler +# defaults to -fstack-protector but this produces an undefined symbol +# other than __stack_chk_fail. However, compilers like that have not +# been encountered in practice. +libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'` +case "$libc_undefs" in +foobar) libc_cv_predef_stack_protector=no ;; +'__stack_chk_fail +foobar') libc_cv_predef_stack_protector=yes ;; +*) as_fn_error $? "unexpected symbols in test: $libc_undefs" "$LINENO" 5 ;; +esac else - ac_cv_header_stdc=no + as_fn_error $? "test compilation failed" "$LINENO" 5 fi -rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ - conftest.$ac_objext conftest.beam conftest.$ac_ext -fi - -fi -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 -$as_echo "$ac_cv_header_stdc" >&6; } -if test $ac_cv_header_stdc = yes; then - -$as_echo "#define STDC_HEADERS 1" >>confdefs.h - -fi - -# On IRIX 5.3, sys/types and inttypes.h are conflicting. -for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \ - inttypes.h stdint.h unistd.h -do : - as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` -ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default -" -if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : - cat >>confdefs.h <<_ACEOF -#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 -_ACEOF - -fi - -done - - -# The cast to long int works around a bug in the HP C Compiler -# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects -# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. -# This bug is HP SR number 8606223364. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long double" >&5 -$as_echo_n "checking size of long double... " >&6; } -if ${ac_cv_sizeof_long_double+:} false; then : - $as_echo_n "(cached) " >&6 -else - if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long double))" "ac_cv_sizeof_long_double" "$ac_includes_default"; then : +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -else - if test "$ac_cv_type_long_double" = yes; then - { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 -$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} -as_fn_error 77 "cannot compute sizeof (long double) -See \`config.log' for more details" "$LINENO" 5; } - else - ac_cv_sizeof_long_double=0 - fi fi - +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_predef_stack_protector" >&5 +$as_echo "$libc_cv_predef_stack_protector" >&6; } +libc_extra_cflags= +if test $libc_cv_predef_stack_protector = yes; then + libc_extra_cflags=-fno-stack-protector fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_double" >&5 -$as_echo "$ac_cv_sizeof_long_double" >&6; } - - - -cat >>confdefs.h <<_ACEOF -#define SIZEOF_LONG_DOUBLE $ac_cv_sizeof_long_double -_ACEOF - - -sizeof_long_double=$ac_cv_sizeof_long_double ### End of automated tests. |