diff options
| author | ppalka <ppalka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-07-20 14:09:20 +0000 |
|---|---|---|
| committer | ppalka <ppalka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-07-20 14:09:20 +0000 |
| commit | 655e3fb1e1c820f79952bd8c79d6cb753ca23ecf (patch) | |
| tree | e493a2b224e1d6b742eeae1b08d074cd841ea941 /gcc/configure | |
| parent | d0f11d683993cac93ddfa00c7628e167d08585a1 (diff) | |
Build libbackend.a as a thin archive if possible
gcc/ChangeLog:
* configure.ac (thin_archive_support): New variable. AC_SUBST it.
* configure: Regenerate.
* Makefile.in (THIN_ARCHIVE_SUPPORT): New variable.
(USE_THIN_ARCHIVES): New variable.
(libbackend.a): If USE_THIN_ARCHIVES then pass T to ar to build
this archive as a thin archive.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@238524 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/gcc/configure b/gcc/configure index ed4447299c2..871ed0c3d15 100755 --- a/gcc/configure +++ b/gcc/configure @@ -679,6 +679,7 @@ zlibinc zlibdir HOST_LIBS enable_default_ssp +thin_archive_support libgcc_visibility gcc_cv_readelf gcc_cv_objdump @@ -18475,7 +18476,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18478 "configure" +#line 18479 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -18581,7 +18582,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18584 "configure" +#line 18585 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -27846,6 +27847,21 @@ $as_echo "#define HAVE_AS_LINE_ZERO 1" >>confdefs.h fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking support for thin archives" >&5 +$as_echo_n "checking support for thin archives... " >&6; } +thin_archive_support=no +echo 'int main (void) { return 0; }' > conftest.c +if ($AR --version | sed 1q | grep "GNU ar" \ + && $CC $CFLAGS -c conftest.c \ + && $AR rcT conftest.a conftest.o \ + && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then + thin_archive_support=yes +fi +rm -f conftest.c conftest.o conftest.a conftest +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $thin_archive_support" >&5 +$as_echo "$thin_archive_support" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker PT_GNU_EH_FRAME support" >&5 $as_echo_n "checking linker PT_GNU_EH_FRAME support... " >&6; } gcc_cv_ld_eh_frame_hdr=no |