/thirdparty/breakpad/third_party/glog/m4/ac_have_builtin_expect.m4
http://github.com/tomahawk-player/tomahawk · m4 · 14 lines · 14 code · 0 blank · 0 comment · 0 complexity · d5d8f1c22bec44646f2056d47e5da270 MD5 · raw file
- 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)
- ])