Environment variables on Mac OS X

[Adriaan van Os]

As discussed before, shared libraries on Mac OS X can not reference the 
environ variable directly, where applications can. This is a show 
stopper on Mac OS X, because of the internals of autoconf and because 
the environ variable is referenced in gpc's runtime library. To solve 
this problem, I apply the following patch:

--- gcc/p/rts/rts.c.orig	Wed Apr 16 01:58:46 2003
+++ gcc/p/rts/rts.c	Fri Jun  6 11:35:50 2003
@@ -195,7 +195,15 @@
  extern int errno;
  #endif

-#if defined (HAVE_ENVIRON) || defined (environ)
+/* needed by Mac OS X */
+#if defined (__MACH__) && defined(__APPLE__)
+#include <crt_externs.h>
+#endif
+
+/* on Mac OS X the environ variable can not be referenced in shared 
libraries */
+#if defined (__MACH__) && defined(__APPLE__)
+#define environ (*_NSGetEnviron())
+#elif defined (HAVE_ENVIRON) || defined (environ)
  #if !defined (environ) && !defined (ENVIRON_DECLARED)
  extern char **environ;
  #endif

I would be grateful if this patch is merged with gpc's sources.

Regards,

Adriaan van Os