Fix gcc build failure (define __has_builtin).

2015-08-12 16:46:09 -07:00 · 2015-08-12 16:46:09 -07:00 · fead75fd52
commit fead75fd52
parent 7928f62273
1 changed files with 3 additions and 0 deletions
--- a/include/jemalloc/internal/util.h
+++ b/include/jemalloc/internal/util.h
@ -60,6 +60,9 @@
 #define	JEMALLOC_GNUC_PREREQ(major, minor)				\
    (!defined(__clang__) &&						\
    (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
+#ifndef __has_builtin
+#  define __has_builtin(builtin) (0)
+#endif
 #define	JEMALLOC_CLANG_HAS_BUILTIN(builtin)				\
    (defined(__clang__) && __has_builtin(builtin))