*/
#ifndef IN_STG_CODE
# define IN_STG_CODE 1
-# define _ISOC99_SOURCE
+
// Turn on C99 for .hc code. This gives us the INFINITY and NAN
// constants from math.h, which we occasionally need to use in .hc (#1861)
+# define _ISOC99_SOURCE
+
+// Turning on _ISOC99_SOURCE means S_ISSOCK gets defined on Linux
+# define _BSD_SOURCE
#endif
#if IN_STG_CODE == 0
* 'Portable' inlining:
* INLINE_HEADER is for inline functions in header files (macros)
* STATIC_INLINE is for inline functions in source files
- * EXTERN_INLINE is for functions that we want to inline sometimes
+ * EXTERN_INLINE is for functions that we want to inline sometimes
+ * (we also compile a static version of the function; see Inlines.c)
*/
#if defined(__GNUC__) || defined( __INTEL_COMPILER)
# define INLINE_ME inline
# define STATIC_INLINE INLINE_HEADER
-# if defined(KEEP_INLINES)
-# define EXTERN_INLINE inline
-# else
-# define EXTERN_INLINE extern inline
-# endif
+// The special "extern inline" behaviour is now only supported by gcc
+// when _GNUC_GNU_INLINE__ is defined, and you have to use
+// __attribute__((gnu_inline)). So when we don't have this, we use
+// ordinary static inline.
+//
+// Apple's gcc defines __GNUC_GNU_INLINE__ without providing
+// gnu_inline, so we exclude MacOS X and fall through to the safe
+// version.
+//
+#if defined(__GNUC_GNU_INLINE__) && !defined(__APPLE__)
+# if defined(KEEP_INLINES)
+# define EXTERN_INLINE inline
+# else
+# define EXTERN_INLINE extern inline __attribute__((gnu_inline))
+# endif
+#else
+# if defined(KEEP_INLINES)
+# define EXTERN_INLINE
+# else
+# define EXTERN_INLINE INLINE_HEADER
+# endif
+#endif
#elif defined(_MSC_VER)