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-rw-r--r--ChangeLog.linaro40
-rw-r--r--gcc/Makefile.in15
-rw-r--r--gcc/common.opt10
-rw-r--r--gcc/config.gcc11
-rw-r--r--gcc/config/i386/t-gnu1
-rw-r--r--gcc/config/i386/t-kfreebsd5
-rw-r--r--gcc/config/i386/t-linux1
-rw-r--r--gcc/config/i386/t-linux646
-rwxr-xr-xgcc/configure38
-rw-r--r--gcc/configure.ac25
-rw-r--r--gcc/cppdefault.c2
-rw-r--r--gcc/cppdefault.h8
-rw-r--r--gcc/doc/fragments.texi60
-rw-r--r--gcc/doc/install.texi9
-rw-r--r--gcc/doc/invoke.texi5
-rw-r--r--gcc/gcc.c82
-rw-r--r--gcc/genmultilib15
-rw-r--r--gcc/incpath.c16
18 files changed, 320 insertions, 29 deletions
diff --git a/ChangeLog.linaro b/ChangeLog.linaro
index 8e2b289e5db..6dabe6508ac 100644
--- a/ChangeLog.linaro
+++ b/ChangeLog.linaro
@@ -1,3 +1,43 @@
+2012-02-05 Yvan Roux <yvan.roux@linaro.org>
+
+ Backport from mainline r193508
+
+ 2012-11-14 Matthias Klose <doko@ubuntu.com>
+
+ * doc/invoke.texi: Document -print-multiarch.
+ * doc/install.texi: Document --enable-multiarch.
+ * doc/fragments.texi: Document MULTILIB_OSDIRNAMES, MULTIARCH_DIRNAME.
+ * configure.ac: Add --enable-multiarch option.
+ * configure: Regenerate.
+ * Makefile.in (s-mlib): Pass MULTIARCH_DIRNAME to genmultilib.
+ enable_multiarch, with_float: New macros.
+ if_multiarch: New macro, define in terms of enable_multiarch.
+ * genmultilib: Add new argument for the multiarch name.
+ * gcc.c (multiarch_dir): Define.
+ (for_each_path): Search for multiarch suffixes.
+ (driver_handle_option): Handle multiarch option.
+ (do_spec_1): Pass -imultiarch if defined.
+ (main): Print multiarch.
+ (set_multilib_dir): Separate multilib and multiarch names
+ from multilib_select.
+ (print_multilib_info): Ignore multiarch names in multilib_select.
+ * incpath.c (add_standard_paths): Search the multiarch include dirs.
+ * cppdefault.h (default_include): Document multiarch in multilib
+ member.
+ * cppdefault.c: [LOCAL_INCLUDE_DIR, STANDARD_INCLUDE_DIR] Add an
+ include directory for multiarch directories.
+ * common.opt: New options --print-multiarch and -imultilib.
+ * config.gcc <i[34567]86-*-linux* | x86_64-*-linux*> (tmake_file):
+ Include i386/t-linux.
+ <i[34567]86-*-kfreebsd*-gnu | x86_64-*-kfreebsd*-gnu> (tmake_file):
+ Include i386/t-kfreebsd.
+ <i[34567]86-*-gnu*> (tmake_file): Include i386/t-gnu.
+ * config/i386/t-linux64: Add multiarch names in
+ MULTILIB_OSDIRNAMES, define MULTIARCH_DIRNAME.
+ * config/i386/t-gnu: New file.
+ * config/i386/t-kfreebsd: Likewise.
+ * config/i386/t-linux: Likewise.
+
2013-01-15 Matthew Gretton-Dann <matthew.gretton-dann@linaro.org>
gcc/
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 37c75956422..766668c1255 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -540,6 +540,18 @@ extra_modes_file=@extra_modes_file@
extra_opt_files=@extra_opt_files@
host_hook_obj=@out_host_hook_obj@
+# Multiarch support
+enable_multiarch = @enable_multiarch@
+with_float = @with_float@
+ifeq ($(enable_multiarch),yes)
+ if_multiarch = $(1)
+else ifeq ($(enable_multiarch),auto)
+ # SYSTEM_HEADER_DIR is makefile syntax, cannot be evaluated in configure.ac
+ if_multiarch = $(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib/*/crti.o),$(1))
+else
+ if_multiarch =
+endif
+
# ------------------------
# Installation directories
# ------------------------
@@ -1834,10 +1846,11 @@ s-mlib: $(srcdir)/genmultilib Makefile
"$(MULTILIB_EXCLUSIONS)" \
"$(MULTILIB_OSDIRNAMES)" \
"$(MULTILIB_REQUIRED)" \
+ "$(MULTIARCH_DIRNAME)" \
"@enable_multilib@" \
> tmp-mlib.h; \
else \
- $(SHELL) $(srcdir)/genmultilib '' '' '' '' '' '' '' '' no\
+ $(SHELL) $(srcdir)/genmultilib '' '' '' '' '' '' '' '' "$(MULTIARCH_DIRNAME)" no \
> tmp-mlib.h; \
fi
$(SHELL) $(srcdir)/../move-if-change tmp-mlib.h multilib.h
diff --git a/gcc/common.opt b/gcc/common.opt
index 171f9a079ed..42d0043cbc8 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -345,6 +345,9 @@ Driver Alias(print-multi-lib)
-print-multi-os-directory
Driver Alias(print-multi-os-directory)
+-print-multiarch
+Driver Alias(print-multiarch)
+
-print-prog-name
Driver Separate Alias(print-prog-name=)
@@ -2285,6 +2288,10 @@ iplugindir=
Common Joined Var(plugindir_string) Init(0)
-iplugindir=<dir> Set <dir> to be the default plugin directory
+imultiarch
+Common Joined Separate RejectDriver Var(imultiarch) Init(0)
+-imultiarch <dir> Set <dir> to be the multiarch include subdirectory
+
l
Driver Joined Separate
@@ -2342,6 +2349,9 @@ Driver Var(print_multi_lib)
print-multi-os-directory
Driver Var(print_multi_os_directory)
+
+print-multiarch
+Driver Var(print_multiarch)
print-prog-name=
Driver JoinedOrMissing Var(print_prog_name)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index c41fddc4db3..658ac155f04 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -3682,9 +3682,14 @@ case ${target} in
i[34567]86-*-darwin* | x86_64-*-darwin*)
;;
- i[34567]86-*-linux* | x86_64-*-linux* | \
- i[34567]86-*-kfreebsd*-gnu | x86_64-*-kfreebsd*-gnu | \
- i[34567]86-*-gnu*)
+ i[34567]86-*-linux* | x86_64-*-linux*)
+ tmake_file="$tmake_file i386/t-linux"
+ ;;
+ i[34567]86-*-kfreebsd*-gnu | x86_64-*-kfreebsd*-gnu)
+ tmake_file="$tmake_file i386/t-kfreebsd"
+ ;;
+ i[34567]86-*-gnu*)
+ tmake_file="$tmake_file i386/t-gnu"
;;
i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
;;
diff --git a/gcc/config/i386/t-gnu b/gcc/config/i386/t-gnu
new file mode 100644
index 00000000000..5f946c71604
--- /dev/null
+++ b/gcc/config/i386/t-gnu
@@ -0,0 +1 @@
+MULTIARCH_DIRNAME = $(call if_multiarch,i386-gnu)
diff --git a/gcc/config/i386/t-kfreebsd b/gcc/config/i386/t-kfreebsd
new file mode 100644
index 00000000000..b4310df8afb
--- /dev/null
+++ b/gcc/config/i386/t-kfreebsd
@@ -0,0 +1,5 @@
+MULTIARCH_DIRNAME = $(call if_multiarch,i386-kfreebsd-gnu)
+
+# MULTILIB_OSDIRNAMES are set in t-linux64.
+KFREEBSD_OS = $(filter kfreebsd%, $(word 3, $(subst -, ,$(target))))
+MULTILIB_OSDIRNAMES := $(subst linux,$(KFREEBSD_OS),$(MULTILIB_OSDIRNAMES))
diff --git a/gcc/config/i386/t-linux b/gcc/config/i386/t-linux
new file mode 100644
index 00000000000..155314c08a7
--- /dev/null
+++ b/gcc/config/i386/t-linux
@@ -0,0 +1 @@
+MULTIARCH_DIRNAME = $(call if_multiarch,i386-linux-gnu)
diff --git a/gcc/config/i386/t-linux64 b/gcc/config/i386/t-linux64
index b5d39855a70..dfaf2763d89 100644
--- a/gcc/config/i386/t-linux64
+++ b/gcc/config/i386/t-linux64
@@ -34,6 +34,6 @@
comma=,
MULTILIB_OPTIONS = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
MULTILIB_DIRNAMES = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
-MULTILIB_OSDIRNAMES = m64=../lib64
-MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)
-MULTILIB_OSDIRNAMES+= mx32=../libx32
+MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-linux-gnu)
+MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:i386-linux-gnu)
+MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x32-linux-gnu)
diff --git a/gcc/configure b/gcc/configure
index 418ea924a89..0ef1b44da3f 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -764,6 +764,8 @@ SYSROOT_CFLAGS_FOR_TARGET
enable_shared
enable_fixed_point
enable_decimal_float
+with_float
+enable_multiarch
enable_multilib
ENABLE_BUILD_WITH_CXX
coverage_flags
@@ -875,6 +877,7 @@ enable_gather_detailed_mem_stats
enable_build_with_cxx
with_stabs
enable_multilib
+enable_multiarch
enable___cxa_atexit
enable_decimal_float
enable_fixed_point
@@ -1576,6 +1579,7 @@ Optional Features:
enable detailed memory allocation stats gathering
--enable-build-with-cxx build with C++ compiler instead of C compiler
--enable-multilib enable library support for multiple ABIs
+ --enable-multiarch enable support for multiarch paths
--enable-__cxa_atexit enable __cxa_atexit for C++
--enable-decimal-float={no,yes,bid,dpd}
enable decimal float extension to C. Selecting 'bid'
@@ -7031,6 +7035,36 @@ fi
+# Determine whether or not multiarch is enabled.
+# Check whether --enable-multiarch was given.
+if test "${enable_multiarch+set}" = set; then :
+ enableval=$enable_multiarch; case "${withval}" in
+yes|no|auto) enable_multiarch=$withval;;
+*) as_fn_error "bad value ${withval} given for --enable-multiarch option" "$LINENO" 5 ;;
+esac
+else
+ enable_multiarch=auto
+fi
+
+if test x${enable_multiarch} = xauto; then
+ if test x${with_native_system_header_dir} != x; then
+ ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
+ enable_multiarch=no
+ fi
+ if test x$host != x$target && test "x$with_sysroot" = x; then
+ ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
+ enable_multiarch=no
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for multiarch configuration" >&5
+$as_echo_n "checking for multiarch configuration... " >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_multiarch$ma_msg_suffix" >&5
+$as_echo "$enable_multiarch$ma_msg_suffix" >&6; }
+
+# needed for setting the multiarch name for soft-float/hard-float ABIs
+
+
# Enable __cxa_atexit for C++.
# Check whether --enable-__cxa_atexit was given.
if test "${enable___cxa_atexit+set}" = set; then :
@@ -18011,7 +18045,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 17974 "configure"
+#line 18048 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -18117,7 +18151,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 18080 "configure"
+#line 18154 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 7b553607fa3..6eacf6ed7aa 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -623,6 +623,31 @@ AC_ARG_ENABLE(multilib,
[], [enable_multilib=yes])
AC_SUBST(enable_multilib)
+# Determine whether or not multiarch is enabled.
+AC_ARG_ENABLE(multiarch,
+[AS_HELP_STRING([--enable-multiarch],
+ [enable support for multiarch paths])],
+[case "${withval}" in
+yes|no|auto) enable_multiarch=$withval;;
+*) AC_MSG_ERROR(bad value ${withval} given for --enable-multiarch option) ;;
+esac], [enable_multiarch=auto])
+if test x${enable_multiarch} = xauto; then
+ if test x${with_native_system_header_dir} != x; then
+ ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
+ enable_multiarch=no
+ fi
+ if test x$host != x$target && test "x$with_sysroot" = x; then
+ ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
+ enable_multiarch=no
+ fi
+fi
+AC_MSG_CHECKING(for multiarch configuration)
+AC_SUBST(enable_multiarch)
+AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
+
+# needed for setting the multiarch name for soft-float/hard-float ABIs
+AC_SUBST(with_float)
+
# Enable __cxa_atexit for C++.
AC_ARG_ENABLE(__cxa_atexit,
[AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
diff --git a/gcc/cppdefault.c b/gcc/cppdefault.c
index 927083e939d..99c4c8814df 100644
--- a/gcc/cppdefault.c
+++ b/gcc/cppdefault.c
@@ -63,6 +63,7 @@ const struct default_include cpp_include_defaults[]
#endif
#ifdef LOCAL_INCLUDE_DIR
/* /usr/local/include comes before the fixincluded header files. */
+ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },
{ LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
#endif
#ifdef PREFIX_INCLUDE_DIR
@@ -90,6 +91,7 @@ const struct default_include cpp_include_defaults[]
#endif
#ifdef NATIVE_SYSTEM_HEADER_DIR
/* /usr/include comes dead last. */
+ { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 2 },
{ NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
#endif
{ 0, 0, 0, 0, 0, 0 }
diff --git a/gcc/cppdefault.h b/gcc/cppdefault.h
index 657c4abce21..7f58a1be310 100644
--- a/gcc/cppdefault.h
+++ b/gcc/cppdefault.h
@@ -43,9 +43,11 @@ struct default_include
C++. */
const char add_sysroot; /* FNAME should be prefixed by
cpp_SYSROOT. */
- const char multilib; /* FNAME should have the multilib path
- specified with -imultilib
- appended. */
+ const char multilib; /* FNAME should have appended
+ - the multilib path specified with -imultilib
+ when set to 1,
+ - the multiarch path specified with
+ -imultiarch, when set to 2. */
};
extern const struct default_include cpp_include_defaults[];
diff --git a/gcc/doc/fragments.texi b/gcc/doc/fragments.texi
index f53df29603e..28cef689f15 100644
--- a/gcc/doc/fragments.texi
+++ b/gcc/doc/fragments.texi
@@ -93,6 +93,12 @@ Write one element in @code{MULTILIB_DIRNAMES} for each element in
default value will be @code{MULTILIB_OPTIONS}, with all slashes treated
as spaces.
+@code{MULTILIB_DIRNAMES} describes the multilib directories using GCC
+conventions and is applied to directories that are part of the GCC
+installation. When multilib-enabled, the compiler will add a
+subdirectory of the form @var{prefix}/@var{multilib} before each
+directory in the search path for libraries and crt files.
+
For example, if @code{MULTILIB_OPTIONS} is set to @samp{m68000/m68020
msoft-float}, then the default value of @code{MULTILIB_DIRNAMES} is
@samp{m68000 m68020 msoft-float}. You may specify a different value if
@@ -152,6 +158,60 @@ compiler. In that case, set @code{MULTILIB_EXTRA_OPTS} to be the list
of options to be used for all builds. If you set this, you should
probably set @code{CRTSTUFF_T_CFLAGS} to a dash followed by it.
+@findex MULTILIB_OSDIRNAMES
+@item MULTILIB_OSDIRNAMES
+If @code{MULTILIB_OPTIONS} is used, this variable specifies
+a list of subdirectory names, that are used to modify the search
+path depending on the chosen multilib. Unlike @code{MULTILIB_DIRNAMES},
+@code{MULTILIB_OSDIRNAMES} describes the multilib directories using
+operating systems conventions, and is applied to the directories such as
+@code{lib} or those in the @env{LIBRARY_PATH} environment variable.
+The format is either the same as of
+@code{MULTILIB_DIRNAMES}, or a set of mappings. When it is the same
+as @code{MULTILIB_DIRNAMES}, it describes the multilib directories
+using operating system conventions, rather than GCC conventions. When it is a set
+of mappings of the form @var{gccdir}=@var{osdir}, the left side gives
+the GCC convention and the right gives the equivalent OS defined
+location. If the @var{osdir} part begins with a @samp{!},
+GCC will not search in the non-multilib directory and use
+exclusively the multilib directory. Otherwise, the compiler will
+examine the search path for libraries and crt files twice; the first
+time it will add @var{multilib} to each directory in the search path,
+the second it will not.
+
+For configurations that support both multilib and multiarch,
+@code{MULTILIB_OSDIRNAMES} also encodes the multiarch name, thus
+subsuming @code{MULTIARCH_DIRNAME}. The multiarch name is appended to
+each directory name, separated by a colon (e.g.
+@samp{../lib32:i386-linux-gnu}).
+
+Each multiarch subdirectory will be searched before the corresponding OS
+multilib directory, for example @samp{/lib/i386-linux-gnu} before
+@samp{/lib/../lib32}. The multiarch name will also be used to modify the
+system header search path, as explained for @code{MULTIARCH_DIRNAME}.
+
+@findex MULTIARCH_DIRNAME
+@item MULTIARCH_DIRNAME
+This variable specifies the multiarch name for configurations that are
+multiarch-enabled but not multilibbed configurations.
+
+The multiarch name is used to augment the search path for libraries, crt
+files and system header files with additional locations. The compiler
+will add a multiarch subdirectory of the form
+@var{prefix}/@var{multiarch} before each directory in the library and
+crt search path. It will also add two directories
+@code{LOCAL_INCLUDE_DIR}/@var{multiarch} and
+@code{NATIVE_SYSTEM_HEADER_DIR}/@var{multiarch}) to the system header
+search path, respectively before @code{LOCAL_INCLUDE_DIR} and
+@code{NATIVE_SYSTEM_HEADER_DIR}.
+
+@code{MULTIARCH_DIRNAME} is not used for configurations that support
+both multilib and multiarch. In that case, multiarch names are encoded
+in @code{MULTILIB_OSDIRNAMES} instead.
+
+More documentation about multiarch can be found at
+@uref{http://wiki.debian.org/Multiarch}.
+
@findex SPECS
@item SPECS
Unfortunately, setting @code{MULTILIB_EXTRA_OPTS} is not enough, since
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 2b0fbc77616..fcded05c043 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -1038,6 +1038,15 @@ libraries to support different target variants, calling
conventions, etc.@: should not be built. The default is to build a
predefined set of them.
+@item --enable-multiarch
+Specify whether to enable or disable multiarch support. The default is
+to check for glibc start files in a multiarch location, and enable it
+if the files are found. The auto detection is enabled for native builds,
+and for cross builds configured with @option{--with-sysroot}, and without
+@option{--with-native-system-header-dir}.
+More documentation about multiarch can be found at
+@uref{http://wiki.debian.org/Multiarch}.
+
Some targets provide finer-grained control over which multilibs are built
(e.g., @option{--disable-softfloat}):
@table @code
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 40baf717e8c..a068d7ea2bc 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -6046,6 +6046,11 @@ sibling directories this prints e.g.@: @file{../lib64}, @file{../lib} or
@file{../lib32}, or if OS libraries are present in @file{lib/@var{subdir}}
subdirectories it prints e.g.@: @file{amd64}, @file{sparcv9} or @file{ev6}.
+@item -print-multiarch
+@opindex print-multiarch
+Print the path to OS libraries for the selected multiarch,
+relative to some @file{lib} subdirectory.
+
@item -print-prog-name=@var{program}
@opindex print-prog-name
Like @option{-print-file-name}, but searches for a program such as @samp{cpp}.
diff --git a/gcc/gcc.c b/gcc/gcc.c
index cc6a08eb091..29d26cd6144 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1153,6 +1153,11 @@ static const char *multilib_dir;
set_multilib_dir based on the compilation options. */
static const char *multilib_os_dir;
+
+/* Subdirectory to use for locating libraries in multiarch conventions. Set by
+ set_multilib_dir based on the compilation options. */
+
+static const char *multiarch_dir;
/* Structure to keep track of the specs that have been defined so far.
These are accessed using %(specname) in a compiler or link
@@ -2078,6 +2083,7 @@ for_each_path (const struct path_prefix *paths,
struct prefix_list *pl;
const char *multi_dir = NULL;
const char *multi_os_dir = NULL;
+ const char *multiarch_suffix = NULL;
const char *multi_suffix;
const char *just_multi_suffix;
char *path = NULL;
@@ -2095,11 +2101,14 @@ for_each_path (const struct path_prefix *paths,
}
if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
+ if (multiarch_dir)
+ multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL);
while (1)
{
size_t multi_dir_len = 0;
size_t multi_os_dir_len = 0;
+ size_t multiarch_len = 0;
size_t suffix_len;
size_t just_suffix_len;
size_t len;
@@ -2108,16 +2117,15 @@ for_each_path (const struct path_prefix *paths,
multi_dir_len = strlen (multi_dir);
if (multi_os_dir)
multi_os_dir_len = strlen (multi_os_dir);
+ if (multiarch_suffix)
+ multiarch_len = strlen (multiarch_suffix);
suffix_len = strlen (multi_suffix);
just_suffix_len = strlen (just_multi_suffix);
if (path == NULL)
{
len = paths->max_len + extra_space + 1;
- if (suffix_len > multi_os_dir_len)
- len += suffix_len;
- else
- len += multi_os_dir_len;
+ len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
path = XNEWVEC (char, len);
}
@@ -2146,6 +2154,16 @@ for_each_path (const struct path_prefix *paths,
break;
}
+ /* Now try the multiarch path. */
+ if (!skip_multi_dir
+ && !pl->require_machine_suffix && multiarch_dir)
+ {
+ memcpy (path + len, multiarch_suffix, multiarch_len + 1);
+ ret = callback (path, callback_info);
+ if (ret)
+ break;
+ }
+
/* Now try the base path. */
if (!pl->require_machine_suffix
&& !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
@@ -2970,6 +2988,9 @@ display_help (void)
fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
+ fputs (_("\
+ -print-multiarch Display the target's normalized GNU triplet, used as\n\
+ a component in the library path\n"), stdout);
fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
fputs (_("\
-print-multi-lib Display the mapping between command line options and\n\
@@ -3244,6 +3265,7 @@ driver_handle_option (struct gcc_options *opts,
case OPT_print_multi_directory:
case OPT_print_sysroot:
case OPT_print_multi_os_directory:
+ case OPT_print_multiarch:
case OPT_print_sysroot_headers_suffix:
case OPT_time:
case OPT_wrapper:
@@ -4896,6 +4918,15 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
do_spec_1 (" ", 0, NULL);
}
+ if (multiarch_dir)
+ {
+ do_spec_1 ("-imultiarch", 1, NULL);
+ /* Make this a separate argument. */
+ do_spec_1 (" ", 0, NULL);
+ do_spec_1 (multiarch_dir, 1, NULL);
+ do_spec_1 (" ", 0, NULL);
+ }
+
if (gcc_exec_prefix)
{
do_spec_1 ("-iprefix", 1, NULL);
@@ -6532,6 +6563,15 @@ main (int argc, char **argv)
return (0);
}
+ if (print_multiarch)
+ {
+ if (multiarch_dir == NULL)
+ printf ("\n");
+ else
+ printf ("%s\n", multiarch_dir);
+ return (0);
+ }
+
if (print_sysroot)
{
if (target_system_root)
@@ -7302,7 +7342,9 @@ default_arg (const char *p, int len)
options are present, then we will ignore this completely. Passing
that, gcc will consider each multilib_select in turn using the same
rules for matching the options. If a match is found, that subdirectory
- will be used. */
+ will be used.
+ A subdirectory name is optionally followed by a colon and the corresponding
+ multiarch name. */
static void
set_multilib_dir (void)
@@ -7514,10 +7556,25 @@ set_multilib_dir (void)
q++;
if (q < end)
{
- char *new_multilib_os_dir = XNEWVEC (char, end - q);
- memcpy (new_multilib_os_dir, q + 1, end - q - 1);
- new_multilib_os_dir[end - q - 1] = '\0';
- multilib_os_dir = new_multilib_os_dir;
+ const char *q2 = q + 1, *ml_end = end;
+ char *new_multilib_os_dir;
+
+ while (q2 < end && *q2 != ':')
+ q2++;
+ if (*q2 == ':')
+ ml_end = q2;
+ new_multilib_os_dir = XNEWVEC (char, ml_end - q);
+ memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1);
+ new_multilib_os_dir[ml_end - q - 1] = '\0';
+ multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : ".";
+
+ if (q2 < end && *q2 == ':')
+ {
+ char *new_multiarch_dir = XNEWVEC (char, end - q2);
+ memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1);
+ new_multiarch_dir[end - q2 - 1] = '\0';
+ multiarch_dir = new_multiarch_dir;
+ }
break;
}
}
@@ -7577,9 +7634,10 @@ print_multilib_info (void)
}
/* When --disable-multilib was used but target defines
- MULTILIB_OSDIRNAMES, entries starting with .: are there just
- to find multilib_os_dir, so skip them from output. */
- if (this_path[0] == '.' && this_path[1] == ':')
+ MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
+ with .:: for multiarch configurations) are there just to find
+ multilib_os_dir, so skip them from output. */
+ if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':')
skip = 1;
/* Check for matches with the multilib_exclusions. We don't bother
diff --git a/gcc/genmultilib b/gcc/genmultilib
index dc4751b0439..09b63465b26 100644
--- a/gcc/genmultilib
+++ b/gcc/genmultilib
@@ -84,6 +84,8 @@
# This argument can be used together with MULTILIB_EXCEPTIONS and will take
# effect after the MULTILIB_EXCEPTIONS.
+# The optional ninth argument is the multiarch name.
+
# The last option should be "yes" if multilibs are enabled. If it is not
# "yes", all GCC multilib dir names will be ".".
@@ -133,7 +135,8 @@ extra=$5
exclusions=$6
osdirnames=$7
multilib_required=$8
-enable_multilib=$9
+multiarch=$9
+enable_multilib=${10}
echo "static const char *const multilib_raw[] = {"
@@ -261,6 +264,9 @@ fi
# names.
toosdirnames=
defaultosdirname=
+if [ -n "${multiarch}" ]; then
+ defaultosdirname=::${multiarch}
+fi
if [ -n "${osdirnames}" ]; then
set x ${osdirnames}
shift
@@ -268,6 +274,9 @@ if [ -n "${osdirnames}" ]; then
case "$1" in
.=*)
defaultosdirname=`echo $1 | sed 's|^.=|:|'`
+ if [ -n "${multiarch}" ]; then
+ defaultosdirname=${defaultosdirname}:${multiarch}
+ fi
shift
;;
*=*)
@@ -353,13 +362,13 @@ for combo in ${combinations}; do
dirout=`echo ${combo} | sed -e 's/=/-/g'`
fi
# Remove the leading and trailing slashes.
- dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`
+ dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
# Use the OS directory names rather than the option names.
if [ -n "${toosdirnames}" ]; then
osdirout=`echo ${combo} | sed ${toosdirnames}`
# Remove the leading and trailing slashes.
- osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/$||g'`
+ osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
if [ "x${enable_multilib}" != xyes ]; then
dirout=".:${osdirout}"
disable_multilib=yes
diff --git a/gcc/incpath.c b/gcc/incpath.c
index 6693bf52450..efcd2c75e57 100644
--- a/gcc/incpath.c
+++ b/gcc/incpath.c
@@ -150,8 +150,14 @@ add_standard_paths (const char *sysroot, const char *iprefix,
if (!filename_ncmp (p->fname, cpp_GCC_INCLUDE_DIR, len))
{
char *str = concat (iprefix, p->fname + len, NULL);
- if (p->multilib && imultilib)
+ if (p->multilib == 1 && imultilib)
str = concat (str, dir_separator_str, imultilib, NULL);
+ else if (p->multilib == 2)
+ {
+ if (!imultiarch)
+ continue;
+ str = concat (str, dir_separator_str, imultiarch, NULL);
+ }
add_path (str, SYSTEM, p->cxx_aware, false);
}
}
@@ -203,8 +209,14 @@ add_standard_paths (const char *sysroot, const char *iprefix,
else
str = update_path (p->fname, p->component);
- if (p->multilib && imultilib)
+ if (p->multilib == 1 && imultilib)
str = concat (str, dir_separator_str, imultilib, NULL);
+ else if (p->multilib == 2)
+ {
+ if (!imultiarch)
+ continue;
+ str = concat (str, dir_separator_str, imultiarch, NULL);
+ }
add_path (str, SYSTEM, p->cxx_aware, false);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-19 20:19:17 +0000