On Wed, Jan 20, 2021 at 03:49:28PM -0500, John Scott via Gcc-help wrote: > Hi, > > I'm interested in building the cross toolchain needed to build carl9170 > wireless firmware. The docs say that it needs an SH-2 toolchain, but the build > scripts only use the 'sh-elf' tuple. (I've asked about this on the linux- > wireless list but haven't garnered a response.) > > It seems like config.sub is equally happy to accept sh-elf and sh[1234]-elf, so > I wonder if the first is an alias and to what, or how Binutils+GCC interprets > the difference. sh2-elf defaults to -m2, while sh-elf defaults to -m1. This is only a default, with either toolchain you can generate code for both targets. (It could be that some other things or defaulted differently by the target files, or even disabled,or hardcoded -- I only looked in config.gcc). Segher
