diff options
| author |   John Levon <john.levon@sun.com> | 2009-01-14 15:23:26 +0000 |
|---|---|---|
| committer | John Levon <john.levon@sun.com> | 2009-01-14 15:23:26 +0000 |
| commit | d052118daefca09b679571783bd207d8a814f27d (patch) | |
| tree | 5a81b359d32982575462809a01baf4ba5f244306 /m4 | |
| parent | qemud.c: fix error in yesterday's change: s/X_OK/R_OK/ (diff) | |
| download | libvirt-d052118daefca09b679571783bd207d8a814f27d.tar.gz libvirt-d052118daefca09b679571783bd207d8a814f27d.tar.bz2 libvirt-d052118daefca09b679571783bd207d8a814f27d.zip | |
Improve compiler flag checking
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/compiler-flags.m4 | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/m4/compiler-flags.m4 b/m4/compiler-flags.m4 index cf4cba938..4940a1e6d 100644 --- a/m4/compiler-flags.m4 +++ b/m4/compiler-flags.m4 @@ -25,10 +25,16 @@ AC_DEFUN([gl_COMPILER_FLAGS], AC_SUBST(COMPILER_FLAGS) ac_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $1" - AC_TRY_COMPILE(, - [int x;], - COMPILER_FLAGS="$COMPILER_FLAGS $1" - AC_MSG_RESULT(yes), - AC_MSG_RESULT(no)) - CFLAGS="$ac_save_CFLAGS" + AC_TRY_LINK([], [], has_option=yes, has_option=no,) + echo 'int x;' >conftest.c + $CC $CFLAGS -c conftest.c 2>conftest.err + ret=$? + if test $ret != 0 -o -s conftest.err -o $has_option = "no"; then + AC_MSG_RESULT(no) + else + AC_MSG_RESULT(yes) + COMPILER_FLAGS="$COMPILER_FLAGS $1" + fi + CFLAGS="$ac_save_CFLAGS" + rm -f conftest* ]) |