Olaf Weber <olaf@xxxxxxxxxxxxxxxxxx> writes: > IIRC gcc 2.x defaults to o32 (and cannot do otherwise) while gcc 3.x > defaults to n32. You switch using options like '-mabi=64'. Wrong: GCC 2.x for IRIX 6 defaults to N32 (with N64 support available) and cannot support O32 without hacks (like configuring for mips-sgi-irix5). GCC 3.x is the same in this respect, but there's now a mips-sgi-irix6*o32 configuration to support O32 on IRIX 6, which I hope to integrate into the common mips-sgi-irix6 configuration before GCC 3.4. > The native compiler (MIPSpro) has n32 as its default (set in > /etc/compiler.defaults) but also obeys the SGI_ABI environment Unfortunately, the default may also depend on the machine and compiler version used: e.g. R8000 machines defaulted to N64 with MIPSpro 7.3 compilers ;-( And there's also the issue of the ISA (instruction set architecture) used. See abi(5) and mips_ext(5) for the whole picture. Rainer
