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| author |   charan makkina <charan795m@gmail.com> | 2019-04-30 17:40:53 +0530 |
|---|---|---|
| committer | charan makkina <charan795m@gmail.com> | 2019-05-20 18:14:40 +0530 |
| commit | a826fe833d3f2a8fe2673fa05811fe1a22baf045 (patch) | |
| tree | da11a17c46ca9b8a002a52a290628574fa3f5eda /thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4 | |
| parent | 3e6bf7b64eea418c59959c18750261b815b2892c (diff) | |
Feature: 19.04 part 1
Change-Id: Ibba924b8deca1f246b9dcb12d89d085b6fd33046
Signed-off-by: charan makkina <charan795m@gmail.com>
Diffstat (limited to 'thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4')
| -rw-r--r-- | thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4 b/thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4 new file mode 100644 index 0000000..e91b6fd --- /dev/null +++ b/thirdparty/glog/glog-0.3.5/m4/ac_have_builtin_expect.m4 @@ -0,0 +1,14 @@ +AC_DEFUN([AX_C___BUILTIN_EXPECT], [ + AC_MSG_CHECKING(for __builtin_expect) + AC_CACHE_VAL(ac_cv___builtin_expect, [ + AC_TRY_COMPILE( + [int foo(void) { if (__builtin_expect(0, 0)) return 1; return 0; }], + [], + ac_cv___builtin_expect=yes, + ac_cv___builtin_expect=no + )]) + if test "$ac_cv___builtin_expect" = "yes"; then + AC_DEFINE(HAVE___BUILTIN_EXPECT, 1, [define if your compiler has __builtin_expect]) + fi + AC_MSG_RESULT($ac_cv___builtin_expect) +]) |