Generalize to macintosh.
diff --git a/Include/pgenheaders.h b/Include/pgenheaders.h
index 4712431..59c7e32 100644
--- a/Include/pgenheaders.h
+++ b/Include/pgenheaders.h
@@ -25,11 +25,15 @@
/* Include files and extern declarations used by most of the parser.
This is a precompiled header for THINK C. */
+#ifdef THINK_C
+#define macintosh
+/* #define THINK_C_3_0 /*** TURN THIS ON FOR THINK C 3.0 ***/
+#endif
+
#include <stdio.h>
#include <string.h>
#ifdef THINK_C
-/* #define THINK_C_3_0 /*** TURN THIS ON FOR THINK C 3.0 ****/
#define label label_
#undef label
#endif
@@ -38,7 +42,7 @@
#include <proto.h>
#endif
-#ifdef THINK_C
+#ifdef macintosh
#ifndef THINK_C_3_0
#include <stdlib.h>
#endif