Gpc November 2004

gpc@gnu.de

18 participants
22 discussions

Cross compiling for Mach-O Darwin
by Adriaan van Os 08 Nov '04

08 Nov '04

Waldek Hebisch wrote: > I am unable to reproduce the error in cross-compiler -- I have compiled > string.pas to assembler without a crash (I can not obtain object file > since I have no darwin assembler). It may be interesting to note that yesterday a cctools package has been released that can be used to cross compile and link Mach-O Darwin binaries on Linux, see the odcctools mailing list archives <http://www.opendarwin.org/pipermail/odcctools/2004-November/ 000034.html> of the opendarwin project <http://www.opendarwin.org>. Regards, Adriaan van Os

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Environment variables on Mac OS X
by Adriaan van Os 01 Nov '04

01 Nov '04

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

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Gpc November 2004