summaryrefslogtreecommitdiff
path: root/Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh')
-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh10
1 files changed, 9 insertions, 1 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh
index 857571b42fd..d09849e5653 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb.hh
@@ -246,7 +246,15 @@ extern "C" void hb_free_impl(void *ptr);
* Compiler attributes
*/
-#if (defined(__GNUC__) || defined(__clang__)) && defined(__OPTIMIZE__)
+// gcc 10 has __has_builtin but not earlier versions. Sanction any gcc >= 5
+// clang defines it so no need.
+#ifdef __has_builtin
+#define hb_has_builtin __has_builtin
+#else
+#define hb_has_builtin(x) ((defined(__GNUC__) && __GNUC__ >= 5))
+#endif
+
+#if defined(__OPTIMIZE__) && hb_has_builtin(__builtin_expect)
#define likely(expr) (__builtin_expect (!!(expr), 1))
#define unlikely(expr) (__builtin_expect (!!(expr), 0))
#else