macOS Configuring FFTW3 on Mac OS X 10.6.3

[cturnes]

I'm trying to configure the FFTW3 library to use in OS X 10.6.3. I have a machine capable of 64-bit, but I need to configure it as a 32-bit so that a 32-bit program (MATLAB) can interface with it (through mex). I'm trying to pass it the following configure command:

./configure CFLAGS="-m32 -b i386" CPPFLAGS="-b i386" LDFLAGS="-arch i386"

but when I go to run make, I get:
/usr/bin/ranlib: archive member: libbench2.a(my-getopt.o) cputype (16777223) does not match previous archive members cputype (7) (all members must match)

Any ideas?

 

[Sander]

Sounds like there were some object files left around which were compiled with the previous setting. Perhaps you've tried to build it first, and then decided to try a different configuration?

Does it help to do a make clean in the top-level directory?

 

[cturnes]

That seems to have worked. Thanks!