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| author | Ulrich Drepper <drepper@redhat.com> | 1998-12-11 18:04:12 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-12-11 18:04:12 +0000 |
| commit | 74600f090eda05a215141f77284eff0667a2a086 (patch) | |
| tree | e0e5b6545fee05708e22f04f9c1cd0e7de27df43 | |
| parent | 03b0ae9d90db5d414ab948949a92e5c1ef2bdad6 (diff) | |
| download | glibc-74600f090eda05a215141f77284eff0667a2a086.tar.gz glibc-74600f090eda05a215141f77284eff0667a2a086.tar.xz glibc-74600f090eda05a215141f77284eff0667a2a086.zip | |
(HAVE_DWARF2_UNWIND_INFO): Check for it.
(HAVE_DWARF2_UNWIND_INFO_STATIC): Check for it.
| -rw-r--r-- | configure.in | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 4a0df54859..d006530212 100644 --- a/configure.in +++ b/configure.in @@ -759,6 +759,61 @@ fi rm -f conftest*]) AC_SUBST(libc_cv_ld_no_whole_archive)dnl +AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, +[cat > conftest.c <<EOF +#line __oline__ "configure" +static char __EH_FRAME_BEGIN__[]; +_start () +{ +#ifdef CHECK__register_frame + __register_frame (__EH_FRAME_BEGIN__); + __deregister_frame (__EH_FRAME_BEGIN__); +#endif +#ifdef CHECK__register_frame_info + __register_frame_info (__EH_FRAME_BEGIN__); + __deregister_frame_info (__EH_FRAME_BEGIN__); +#endif +} +int __eh_pc; +__throw () {} +/* FIXME: this is fragile. */ +malloc () {} +strcmp () {} +strlen () {} +memcpy () {} +memset () {} +free () {} +abort () {} +__bzero () {} +EOF +dnl No \ in command here because it ends up inside ''. +if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info + -nostdlib -nostartfiles + -o conftest conftest.c -lgcc >&AC_FD_CC]); then + libc_cv_gcc_dwarf2_unwind_info=static +else + libc_cv_gcc_dwarf2_unwind_info=no +fi +if test $libc_cv_gcc_dwarf2_unwind_info = no; then + if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame + -nostdlib -nostartfiles + -o conftest conftest.c -lgcc >&AC_FD_CC]); then + libc_cv_gcc_dwarf2_unwind_info=yes + else + libc_cv_gcc_dwarf2_unwind_info=no + fi +fi +rm -f conftest*]) +case $libc_cv_gcc_dwarf2_unwind_info in +yes) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) + ;; +static) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) + ;; +esac + AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl cat > conftest.c <<\EOF _start () {} |