/thirdparty/breakpad/third_party/glog/m4/ac_have_builtin_expect.m4
m4 | 14 lines | 14 code | 0 blank | 0 comment | 0 complexity | d5d8f1c22bec44646f2056d47e5da270 MD5 | raw file
1AC_DEFUN([AX_C___BUILTIN_EXPECT], [ 2 AC_MSG_CHECKING(for __builtin_expect) 3 AC_CACHE_VAL(ac_cv___builtin_expect, [ 4 AC_TRY_COMPILE( 5 [int foo(void) { if (__builtin_expect(0, 0)) return 1; return 0; }], 6 [], 7 ac_cv___builtin_expect=yes, 8 ac_cv___builtin_expect=no 9 )]) 10 if test "$ac_cv___builtin_expect" = "yes"; then 11 AC_DEFINE(HAVE___BUILTIN_EXPECT, 1, [define if your compiler has __builtin_expect]) 12 fi 13 AC_MSG_RESULT($ac_cv___builtin_expect) 14])