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| 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.ac | |
| parent | d0f11d683993cac93ddfa00c7628e167d08585a1 (diff) | |
| download | gcc-655e3fb1e1c820f79952bd8c79d6cb753ca23ecf.tar.gz | |
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.ac')
| -rw-r--r-- | gcc/configure.ac | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac index 086d0fc3eca..241e82dfc72 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -4899,6 +4899,19 @@ if test "x$gcc_cv_as_line_zero" = xyes; then [Define if the assembler won't complain about a line such as # 0 "" 2.]) fi +AC_MSG_CHECKING(support for thin archives) +thin_archive_support=no +echo 'int main (void) { return 0; }' > conftest.c +if ($AR --version | sed 1q | grep "GNU ar" \ + && $CC $CFLAGS -c conftest.c \ + && $AR rcT conftest.a conftest.o \ + && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then + thin_archive_support=yes +fi +rm -f conftest.c conftest.o conftest.a conftest +AC_MSG_RESULT($thin_archive_support) +AC_SUBST(thin_archive_support) + AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) gcc_cv_ld_eh_frame_hdr=no if test $in_tree_ld = yes ; then |