sigsegv@rambler.ru wrote:
> Greetings, I'm using pkgsrc on Solaris 9 to compile a C compiler from 
> /usr/pkgsrc/lang/gcc3-c The problem is pkgsrc builds a compiler which 
> does not support -m64 flag. Looking at Makefiles in pkgsrc I noticed 
> that it passes --host=sparc-sun-solaris2 when configuring gcc, I think 
> to build a compiler with 64-bit support it needs to be passed 
> --host=sparcv9-sun-solaris2.9
> 
> Any ideas how I could tell pkgsrc to build a biarch (32/64 bit) C compiler?
> 
> Thanks
> 

Well after tracing through several Makefiles I pinned down the variable 
needed to compiler 64-bit capable gcc:

MACHINE_PLATFORM=sparcv9-sun-solaris2.9
MACHINE_GNU_PLATFORM=sparcv9-sun-solaris2.9

setting the above in /usr/pkg/etc/mk.conf and building gcc in pkgsrc, 
will produce a C compiler which by default generates 64-bit code, and 
has support for generating 32-bit code with -m32 flag.