On Sun, Sep 06, 2009 at 08:55:08AM +0200, Martin Costabel wrote:
> Jack Howarth wrote:
>> Martin,
>> Regarding your question about how to get gfortran to accept the -arch
>> option,
>> it can't. That is an enhancement that Apple added to their gcc which wasn't
>> (and is unlikely
>> to ever be) ported to FSF gcc. The approach FSF gcc uses (which we have
>> supported since
>> I assumed maintainership) is a 64-bit (for powerpc/i386) or 32-bit (for
>> x86_64) multilib.
>> If you build gcc44 under x86_64, it is built as a x86_64 native compiler
>> (which executes
>> and generates 64-bit code as the default). If you want to generate 32-bit
>> code with this
>> compiler, you pass it -m32 just like our compiler wrappers do with the Snow
>> Leopard compilers.
>> Keep in mind that if you have been explicitly linking to -lgfortran using
>> -L%p/lib/gcc44/lib
>> this will have to be changed to -L%p/lib/gcc4.4/lib/i386. Likewise, if you
>> are on i386 fink
>> and want to generate 64-bit code you will pass -m64 and use
>> -L%p/lib/gcc4.4/lib/x86_64 if
>> you are explicitly linking.
>
> OK, now one only needs to figure out how to transmit the -m32 flag to
> gfortran in all the situations where it is needed. Not easy.
>
> --
> Martin
>
>
>
Martin,
I am a bit confused. If you want gfortran to pass -m32, I would suspect you
are
running i386 fink in which case the gcc44 package will have built a 32-bit
native
compiler that generates i386 code. You shouldn't have to pass it anything at
all.
Jack
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