suggestion for faq for release of gcc 2.9x...

[David J N Begley]

...it might fend off some questions (before they grow to become a problem) if
a few notes about how (if it's at all possible) to:

- build a 64-bit UltraSPARC-optimised version of GCC for Solaris 7;  and,
- build a version of GCC for Solaris 7 that can produce both 64-bit
  UltraSPARC, and 32-bit %any%SPARC executables.

;-)

Unfortunately I haven't been able to test the latest snapshot yet - going just
on egcs-1.1.2, the default build (using "--with-cpu=ultrasparc") produces a
32-bit UltraSPARC compiler that cannot produce any 64-bit binaries:

  cc1: -m64 is not supported by this configuration

./egcs-1.1.2/gcc/config/sparc/sparc.h has SPARC_BI_ARCH commented out and it
isn't set anywhere.

Platform is sparc-sun-solaris7 on a Sun Ultra 1 (200MHz) running the 64-bit
kernel.

Cheers..


dave