[CMake] darwin, cmake-2.8, gfortran from fink: option "-arch" not recognized

[Daniel Franke]

Hi all.

I got gcc-4.4.4 for target i386-apple-darwin9.8.0 from fink. First I used 
cmake-2.6 (also from fink) and everything worked. Later, after an update to 
cmake-2.8 (again, from fink), and trying to rebuild my package, I got:

	f951: error: unrecognized command line option "-arch"

As far as I can tell, "-arch" is not an option of FSF GCC. However, the GCC 
docs mention:

[http://gcc.gnu.org/onlinedocs/gcc/Darwin-Options.html]
"FSF GCC on Darwin does not create “fat” object files; it will create an 
object file for the single architecture that it was built to target. Apple's 
GCC on Darwin does create “fat” files if multiple -arch options are used;"

I believe that cmake assumes I have Apple's GCC, not the FSF version. Is there 
an option or flag for cmake to avoid passing "-arch" to the compiler?

Thanks

	Daniel