x86: Do not build read_rgba_span_x86.S on Mac OS X.
read_rgba_span_x86.S uses the pseudo-ops .hidden and .type which are
not recognized on Mac OS X.
diff --git a/src/mesa/x86/read_rgba_span_x86.S b/src/mesa/x86/read_rgba_span_x86.S
index 92b1c2d..3886a51 100644
--- a/src/mesa/x86/read_rgba_span_x86.S
+++ b/src/mesa/x86/read_rgba_span_x86.S
@@ -31,7 +31,7 @@
*/
.file "read_rgba_span_x86.S"
-#if !defined(__DJGPP__) && !defined(__MINGW32__) /* this one cries for assyntax.h */
+#if !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__) /* this one cries for assyntax.h */
/* Kevin F. Quinn 2nd July 2006
* Replaced data segment constants with text-segment instructions.
*/
@@ -671,7 +671,7 @@
emms
#endif
ret
-#endif /* !defined(__DJGPP__) && !defined(__MINGW32__) */
+#endif /* !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__) */
#if defined (__ELF__) && defined (__linux__)
.section .note.GNU-stack,"",%progbits