diff options
| author |   Yalei Wang <william.wangyalei@huawei.com> | 2018-03-09 11:04:03 +0800 |
|---|---|---|
| committer | Yalei Wang <william.wangyalei@huawei.com> | 2018-03-09 11:08:49 +0800 |
| commit | 71e33ec17c12e6ca43f149215ca05fc9d8b1d5a9 (patch) | |
| tree | 0156b92e35311499b75ba21d5b547b47b10061a9 /thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4 | |
| parent | 71a4e2f34afa8018426f0e830050e50a1de6d375 (diff) | |
Add some third-party src code for DMM
glog-0.3.4 is necessary for the DMM project.
Change-Id: Id42f7370ebaff0e584a00d57d66bca98db8004e1
Signed-off-by: Yalei Wang <william.wangyalei@huawei.com>
Diffstat (limited to 'thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4')
| -rw-r--r-- | thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4 b/thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4 new file mode 100644 index 0000000..88b027e --- /dev/null +++ b/thirdparty/glog/glog-0.3.4/m4/ac_have_sync_val_compare_and_swap.m4 @@ -0,0 +1,14 @@ +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 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 + )]) + if test "$ac_cv___sync_val_compare_and_swap" = "yes"; then + AC_DEFINE(HAVE___SYNC_VAL_COMPARE_AND_SWAP, 1, [define if your compiler has __sync_val_compare_and_swap]) + fi + AC_MSG_RESULT($ac_cv___sync_val_compare_and_swap) +]) |