More compatibility stuff.

babel.h

@@ -34,6 +34,20 @@ THE SOFTWARE.
 #define MAX(x,y) ((x)<=(y)?(y):(x))
 #define MIN(x,y) ((x)<=(y)?(x):(y))
 
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+/* nothing */
+#elif defined(__GNUC__)
+#define inline __inline
+#if  (__GNUC__ >= 3)
+#define restrict __restrict
+#else
+#define restrict /**/
+#endif
+#else
+#define inline /**/
+#define restrict /**/
+#endif
+
 #if defined(__GNUC__) && (__GNUC__ >= 3)
 #define ATTRIBUTE(x) __attribute__ (x)
 #define LIKELY(_x) __builtin_expect(!!(_x), 1)