MacOS X: Enable 4-way universal builds

This patch adds a new configure argument on OSX:
        --with-universal-archs=[32-bit|64-bit|all]

When used with the --enable-universalsdk option this controls which
CPU architectures are includes in the framework. The default is 32-bit,
meaning i386 and ppc. The most useful alternative is 'all', which includes
all 4 CPU architectures supported by MacOS X (i386, ppc, x86_64 and ppc64).

This includes limited support for the Carbon bindings in 64-bit mode as well,
limited because (a) I haven't done extensive testing and (b) a large portion
of the Carbon API's aren't available in 64-bit mode anyway.

I've also duplicated a feature of Apple's build of python: setting the
environment variable 'ARCHFLAGS' controls the '-arch' flags used for building
extensions using distutils.

1 files changed, 59 insertions, 0 deletions

diff --git a/Include/pymacconfig.h b/Include/pymacconfig.h
new file mode 100644
index 0000000..e864e72
--- /dev/null
+++ b/Include/pymacconfig.h
@@ -0,0 +1,59 @@
+#ifndef PYMACCONFIG_H
+#define PYMACCONFIG_H
+     /*
+      * This file moves some of the autoconf magic to compile-time
+      * when building on MacOSX. This is needed for building 4-way
+      * universal binaries and for 64-bit universal binaries because
+      * the values redefined below aren't configure-time constant but 
+      * only compile-time constant in these scenarios.
+      */
+
+#if defined(__APPLE__)
+
+# undef SIZEOF_LONG
+# undef SIZEOF_PTHREAD_T
+# undef SIZEOF_SIZE_T
+# undef SIZEOF_TIME_T
+# undef SIZEOF_VOID_P
+
+#    undef VA_LIST_IS_ARRAY
+#    if defined(__LP64__) && defined(__x86_64__)
+#        define VA_LIST_IS_ARRAY 1
+#    endif
+
+#    undef HAVE_LARGEFILE_SUPPORT
+#    ifndef __LP64__
+#         define HAVE_LARGEFILE_SUPPORT 1
+#    endif
+
+#    undef SIZEOF_LONG
+#    ifdef __LP64__
+#        define SIZEOF_LONG 		8
+#        define SIZEOF_PTHREAD_T 	8
+#        define SIZEOF_SIZE_T 		8
+#        define SIZEOF_TIME_T 		8
+#        define SIZEOF_VOID_P 		8
+#    else
+#        define SIZEOF_LONG 		4
+#        define SIZEOF_PTHREAD_T 	4
+#        define SIZEOF_SIZE_T 		4
+#        define SIZEOF_TIME_T 		4
+#        define SIZEOF_VOID_P 		4
+#    endif
+
+#    if defined(__LP64__)
+	 /* MacOSX 10.4 (the first release to suppport 64-bit code
+	  * at all) only supports 64-bit in the UNIX layer. 
+	  * Therefore surpress the toolbox-glue in 64-bit mode.
+	  */
+
+	/* In 64-bit mode setpgrp always has no argments, in 32-bit
+	 * mode that depends on the compilation environment
+	 */
+#	undef SETPGRP_HAVE_ARG
+
+#    endif
+
+#endif /* defined(_APPLE__) */
+
+#endif /* PYMACCONFIG_H */