Michael Eager <eager@xxxxxxxxxxxx> writes: > Ian Lance Taylor wrote: >> Michael Eager <eager@xxxxxxxxxxxx> writes: >> >>> I want a multilib configurations to specify two options, >>> not just a single option. I don't see anything in the >>> docs which describes how to do this or any target which >>> does this. >>> >>> Is there a way to specify that the 'foo' multilib >>> config should be built with -mfoo and -mbar? >> >> You can probably do this but it's not clear what you want. Multilibs >> go two ways: they tell the build process which libraries to build at >> build time, and they tell the compiler driver which libraries to link >> against at link time. What should happen if somebody links using just >> -mfoo or just -mbar? > > -mbar is an optimization which is only valid if -mfoo is also specified. > Linking a non- -mbar lib with -mfoo works OK, -mbar with non- -mfoo fails. In that case, I think one way would be something like MULTILIB_OPTIONS = mfoo mbar MULTILIB_EXCLUSIONS = !mfoo/mbar This is not that great, though, in that will build the -mbar library, it just won't use it. I don't know of a way to do exactly what you want. Ian
