1 files changed, 10 insertions, 0 deletions
diff --git a/upb.h b/upb.h
index b09a39c..ae1845a 100644
--- a/upb.h
+++ b/upb.h
@@ -15,6 +15,16 @@
 extern "C" {
 #endif
 
+/* Portable inlining strategy: use C99 rules except on GCC.
+ *   see: http://www.greenend.org.uk/rjk/2003/03/inline.html. */
+#ifndef INLINE
+# if __GNUC__ && !__GNUC_STDC_INLINE__
+#  define INLINE extern inline
+# else
+#  define INLINE inline
+# endif
+#endif
+
 /* The maximum that any submessages can be nested.  Matches proto2's limit. */
 #define UPB_MAX_NESTING 64