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| author | <shinichiro.hamaji@gmail.com> | 2012-01-12 06:15:52 +0000 |
|---|---|---|
| committer | <shinichiro.hamaji@gmail.com> | 2012-01-12 06:15:52 +0000 |
| commit | 6232847ecb73144658450f2c09968595a0abca65 (patch) | |
| tree | 0518f34a867e7a1bacf5e6c1c53c2c7bd4b2a135 /m4 | |
| parent | 6febec361e73860cc77d9cb0c6c14013c0e36ef0 (diff) | |
| download | glog-6232847ecb73144658450f2c09968595a0abca65.tar.gz glog-6232847ecb73144658450f2c09968595a0abca65.tar.bz2 glog-6232847ecb73144658450f2c09968595a0abca65.zip | |
Fix __sync_val_compare_and_swap detection
We should use the second argument of AC_TRY_LINK.
Otherwise, the main function defined twice and this test does never succeed.
git-svn-id: https://google-glog.googlecode.com/svn/trunk@102 eb4d4688-79bd-11dd-afb4-1d65580434c0
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ac_have_sync_val_compare_and_swap.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/m4/ac_have_sync_val_compare_and_swap.m4 b/m4/ac_have_sync_val_compare_and_swap.m4 index 9ff59c2..88b027e 100644 --- a/m4/ac_have_sync_val_compare_and_swap.m4 +++ b/m4/ac_have_sync_val_compare_and_swap.m4 @@ -2,8 +2,8 @@ AC_DEFUN([AX_C___SYNC_VAL_COMPARE_AND_SWAP], [ AC_MSG_CHECKING(for __sync_val_compare_and_swap) AC_CACHE_VAL(ac_cv___sync_val_compare_and_swap, [ AC_TRY_LINK( - [int main() { int a; if (__sync_val_compare_and_swap(&a, 0, 1)) return 1; return 0; }], [], + [int a; if (__sync_val_compare_and_swap(&a, 0, 1)) return 1; return 0;], ac_cv___sync_val_compare_and_swap=yes, ac_cv___sync_val_compare_and_swap=no )]) |