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| author | Eric Botcazou <ebotcazou@adacore.com> | 2006-12-21 22:10:30 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2006-12-21 22:10:30 +0000 |
| commit | e9d207d9ac31509bbf6db4035b3784c74b47d669 (patch) | |
| tree | e54d62a50edf79cac72303478711cfb6eec51622 /gcc/configure.ac | |
| parent | 5f7fc2b8328f2ecebc668874dd541d9dcd46d17c (diff) | |
| download | gcc-e9d207d9ac31509bbf6db4035b3784c74b47d669.zip gcc-e9d207d9ac31509bbf6db4035b3784c74b47d669.tar.gz gcc-e9d207d9ac31509bbf6db4035b3784c74b47d669.tar.bz2 | |
re PR other/29639 (ext/bitmap_allocator/check_allocate_max_size.cc execution test)
PR other/29639
* configure.ac (HAVE_LD_EH_GC_SECTIONS): Check that exception tables
are kept for .gnu.linkonce.t sections if COMDAT groups are disabled.
* configure: Regenerate.
From-SVN: r120121
Diffstat (limited to 'gcc/configure.ac')
| -rw-r--r-- | gcc/configure.ac | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac index 26560cf..706735e 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -3192,10 +3192,46 @@ EOF gcc_cv_ld_eh_gc_sections=no elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections=yes + # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. + if test x$gcc_cv_as_comdat_group != xyes; then + gcc_cv_ld_eh_gc_sections=no + cat > conftest.s <<EOF + .section .text +.globl _start + .type _start, @function +_start: + .long foo + .size _start, .-_start + .section .gnu.linkonce.t.foo,"ax",@progbits + .type foo, @function +foo: + .long 0 + .size foo, .-foo + .section .gcc_except_table.foo,"a",@progbits +.L0: + .long 0 + .section .eh_frame,"a",@progbits + .long .L0 +EOF + if $gcc_cv_as -o conftest.o 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 $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then + gcc_cv_ld_eh_gc_sections=yes + fi + fi + fi fi fi rm -f conftest.s conftest.o conftest fi +case "$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 |