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.
diff --git a/Lib/distutils/unixccompiler.py b/Lib/distutils/unixccompiler.py
index dc759ee..6144efc 100644
--- a/Lib/distutils/unixccompiler.py
+++ b/Lib/distutils/unixccompiler.py
@@ -64,7 +64,7 @@
stripArch = '-arch' in cc_args
stripSysroot = '-isysroot' in cc_args
- if stripArch:
+ if stripArch or 'ARCHFLAGS' in os.environ:
while 1:
try:
index = compiler_so.index('-arch')
@@ -73,6 +73,12 @@
except ValueError:
break
+ if 'ARCHFLAGS' in os.environ and not stripArch:
+ # User specified different -arch flags in the environ,
+ # see also distutils.sysconfig
+ compiler_so = compiler_so + ' ' + os.environ['ARCHFLAGS']
+
+
if stripSysroot:
try:
index = compiler_so.index('-isysroot')