Building macosx backend ignores arch flags

[fonnesbeck]

Building MPL on OSX 10.7 using the current github code fails because of an architecture incompatibility (see below). The problem is, I have ARCH_FLAGS set to x86_64, explicitly leaving out i386. Nevertheless, the build includes the i386 flag:

g++-4.2 -Wl,-F. -bundle -undefined dynamic_lookup -Wl,-F. -arch i386 -arch x86_64 -arch x86_64 -L/Users/fonnescj/Code/lib -syslibroot,/Developer/SDKs/MacOSX10.7.sdk -arch x86_64 -I/Users/fonnescj/Code/include -I/Users/fonnescj/Code/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.7.sdk -I/Users/fonnescj/Developer/include build/temp.macosx-10.7-intel-2.7/src/_macosx.o build/temp.macosx-10.7-intel-2.7/CXX/cxx_extensions.o build/temp.macosx-10.7-intel-2.7/CXX/cxxextensions.o build/temp.macosx-10.7-intel-2.7/CXX/cxxsupport.o build/temp.macosx-10.7-intel-2.7/CXX/IndirectPythonInterface.o build/temp.macosx-10.7-intel-2.7/src/agg_py_transforms.o build/temp.macosx-10.7-intel-2.7/src/path_cleanup.o -lstdc++ -lm -o build/lib.macosx-10.7-intel-2.7/matplotlib/backends/_macosx.so -framework Cocoa
ld: warning: ignoring file build/temp.macosx-10.7-intel-2.7/src/_macosx.o, file was built for unsupported file format which is not the architecture being linked (i386)

[ivanov]

Hi Chris!

are you using the make.osx method? if so, this patch should fix this for you

diff --git a/make.osx b/make.osx
index 31fbc92..e9cd02d 100644
--- a/make.osx
+++ b/make.osx
@@ -8,7 +8,7 @@ PYVERSION=2.6
 PYTHON=python${PYVERSION}
 MACOSX_DEPLOYMENT_TARGET=10.6
 OSX_SDK_VER=10.6
-ARCH_FLAGS=-arch i386 -arch x86_64
+ARCH_FLAGS?=-arch i386 -arch x86_64

 # Dependency versions and URLs

let me know if that works, and I'll check it in

[fonnesbeck]

I've modified my script for use with 10.7, but yes it works. Thanks Paul.

[WeatherGod]

Paul, I will go ahead and commit this change myself, if you don't mind.

[ivanov]

oh sure, i do the work, and you get the commit glory? i guess that seems fair. :P