py27-numpy @1.5.1 Build ignores archflags

[corwin.amber@…]

I am building on Intel Mac OS X 10.6.5 with:

build_arch                x86_64
macosx_deployment_target  10.5

Which causes gcc-4.0 to be used as the C compiler. Architecture-specific flags are passed to setup.py as CFLAGS, LDFLAGS etc., but numpy.distutils ignores LDFLAGS, which causes link to fail immediately due to mach-o mismatch:

:info:build C compiler: /usr/bin/gcc-4.0 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -arch x86_64
:info:build
:info:build compile options: '-c'
:info:build gcc-4.0: _configtest.c
:info:build /usr/bin/gcc-4.0 _configtest.o -L/opt/local/lib -llapack -lptf77blas -lptcblas -latlas -o _co
nfigtest
:info:build ld: warning: in _configtest.o, file was built for unsupported file format which is not the ar
chitecture being linked (i386)
:info:build Undefined symbols:
:info:build   "_main", referenced from:
:info:build       start in crt1.10.5.o
:info:build ld: symbol(s) not found

I didn't try this, but I suspect the problem will also affect users of 10.6 without macosx_deployment_target trying to compile 32-bit libraries (are there any?).

In my case, I managed to circumvent this issue by adding the following line to the Portfile:

build.env-append        ARCHFLAGS="${configure.ld_archflags}"

[corwin.amber@…]

(typo: 'port' should be py27-numpy)

[jmroot (Joshua Root)]

This was no doubt inherited from py26-numpy.

[skymoo (Adam Mercer)]

fixed in r74507, thanks

[jmroot (Joshua Root)]

Won't that do the wrong thing with +universal? I actually have my doubts about whether the universal variant works anyway, but I haven't tested it, so maybe it does.

[skymoo (Adam Mercer)]

I don't use universal and have never got universal to work right on my system, so I don't know. Personally I can't see the point of universal for numpy etc..

[corwin.amber@…]

I tried in fact and it really doesn't work, nor did it work before. It appears the MacPorts gcc lacks the Apple extension which enables the creation of universal binaries. Since gfortran-mp-4.4 is used for linking, even if the link flags are set to "-arch i386 -arch x86_64", they will be ignored.

[jmroot (Joshua Root)]

Yeah, that's about what I thought would happen when using the gccXX variants. So they should conflict with universal at least. It might still work with -atlas though?

[jmroot (Joshua Root)]

Universal should work as well as it ever did, and not be allowed when using +atlas, as of r74567.