so that LOCAL_MANGLE can be used without EXTERN_PREFIX.
patch by Alexander Strange, astrange ithinksw com
Originally committed as revision 12558 to svn://svn.ffmpeg.org/ffmpeg/trunk
// Use rip-relative addressing if compiling PIC code on x86-64.
#if defined(ARCH_X86_64) && defined(PIC)
-# define MANGLE(a) EXTERN_PREFIX #a"(%%rip)"
+# define LOCAL_MANGLE(a) #a "(%%rip)"
#else
-# define MANGLE(a) EXTERN_PREFIX #a
+# define LOCAL_MANGLE(a) #a
#endif
+#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
+
/* debug stuff */
/* dprintf macros */