Do you mind shared gcc configure and the option you tried?
On Wed, Apr 19, 2023 at 4:01 AM Palmer Dabbelt <pal...@rivosinc.com> wrote: > > On Tue, 18 Apr 2023 08:44:24 PDT (-0700), gcc-patches@gcc.gnu.org wrote: > >> Yep, if I drop the non-canonicial strings via > >> > >> diff --git a/gcc/config/riscv/multilib-generator > >> b/gcc/config/riscv/multilib-generator > >> index 58b7198b243..a63a4d69c18 100755 > >> --- a/gcc/config/riscv/multilib-generator > >> +++ b/gcc/config/riscv/multilib-generator > >> @@ -174,7 +174,7 @@ for cmodel in cmodels: > >> ext_combs = expand_combination(ext) > >> alts = sum([[x] + [x + y for y in ext_combs] for x in [arch] + > >> extra], []) > >> alts = filter(lambda x: len(x) != 0, alts) > >> - alts = alts + list(map(lambda a : arch_canonicalize(a, > >> args.misa_spec), alts)) > >> + alts = list(map(lambda a : arch_canonicalize(a, args.misa_spec), > >> alts)) > >> > >> # Drop duplicated entry. > >> alts = unique(alts) > >> > >> then I can't link `-march=rv32imafdcv`, I need > >> `-march=rv32imacv_zicsr_zve32f_zve32x_zve64x_zvl128b_zvl32b_zvl64b`. > >> That's > >> kind of a headache for users to type in. > > > > Yes, that's a headache for users, but arch string canonicalization is > > hiddened at the process, > > so the user could still just use rv32imafdcv at compile time and > > multi-lib config. > > > > And the driver and multilib-generator (with arch_canonicalize) script > > will handle those headache in the background. > > Sorry, I'm not exactly sure what you're trying to say. I just rebuilt > GCC with this patch (and t-linux-multilib regenerated from it), it's not > resolving multlibs for the short names.
