+2006-12-21 Eric Botcazou <ebotcazou@adacore.com>
+
+ 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.
+
2006-12-21 Joseph Myers <joseph@codesourcery.com>
* rtlanal.c (subreg_get_info): Do not make register size
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
cat >>confdefs.h <<\_ACEOF
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