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| author | Ulrich Drepper <drepper@redhat.com> | 2002-02-28 22:38:00 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2002-02-28 22:38:00 +0000 |
| commit | 0d01dace556f7eb482c346c545e11035d33852ce (patch) | |
| tree | 9bf619ec2629e5dc966602d19f633fbbc8bbbea1 /configure.in | |
| parent | 1eb610d162de8470b53b3e31629932ca7726a142 (diff) | |
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Update.
2002-02-28 Jakub Jelinek <jakub@redhat.com>
* elf/rtld.c (_rtld_global): Remove .protected.
(_rtld_local): Strong alias to _rtld_global.
* elf/Makefile (CFLAGS-.os): Add -D_RTLD_LOCAL if compiling rtld
only .os object.
* sysdeps/generic/ldsodefs.h (GL): If SHARED and _RTLD_LOCAL, use
_rtld_local instead of _rtld_global.
(_rtld_local): Add hidden extern, possibly in .sdata section.
* configure.in: Add tests for visibility attribute and .sdata.
* config.h.in: Add HAVE_VISIBILITY_ATTRIBUTE and HAVE_SDATA_SECTION.
* sysdeps/alpha/dl-machine.h: Use _rtld_local instead of _rtld_global.
* sysdeps/arm/dl-machine.h: Likewise.
* sysdeps/generic/ldsodefs.h: Likewise.
* sysdeps/hppa/dl-machine.h: Likewise.
* sysdeps/cris/dl-machine.h: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/ia64/dl-machine.h: Likewise.
* sysdeps/m68k/dl-machine.h: Likewise.
* sysdeps/mips/mips64/dl-machine.h: Likewise.
* sysdeps/mips/dl-machine.h: Likewise.
* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
* sysdeps/sparc/sparc64/dl-machine.h: Likewise.
* sysdeps/sh/dl-machine.h: Likewise.
* sysdeps/s390/s390-32/dl-machine.h: Likewise.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/x86_64/dl-machine.h: Likewise.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 523e8efe6a..c48c4c1ca6 100644 --- a/configure.in +++ b/configure.in @@ -1001,6 +1001,44 @@ EOF AC_SUBST(libc_cv_asm_protected_directive) AC_DEFINE(HAVE_PROTECTED) + if test $libc_cv_asm_protected_directive = yes; then + AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, + libc_cv_visibility_attribute, + [cat > conftest.c <<EOF + int foo __attribute__ ((visibility ("hidden"))) = 1; + int bar __attribute__ ((visibility ("protected"))) = 1; +EOF + libc_cv_visibility_attribute=no + if ${CC-cc} -Werror -S conftest.c -o conftest.s >/dev/null 2>&1; then + if grep '\.hidden.*foo' conftest.s >/dev/null; then + if grep '\.protected.*bar' conftest.s >/dev/null; then + libc_cv_visibility_attribute=yes + fi + fi + fi + rm -f conftest.[cs] + ]) + if test $libc_cv_visibility_attribute = yes; then + AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE) + fi + fi + + if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then + AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, + libc_cv_have_sdata_section, + [echo "int i;" > conftest.c + libc_cv_have_sdata_section=no + if ${CC-cc} -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ + | grep '\.sdata' >/dev/null; then + libc_cv_have_sdata_section=yes + fi + rm -f conftest.c conftest.so + ]) + if test $libc_cv_have_sdata_section = yes; then + AC_DEFINE(HAVE_SDATA_SECTION) + fi + fi + AC_CACHE_CHECK(for -z nodelete option, libc_cv_z_nodelete, [dnl cat > conftest.c <<EOF |