zig cc does not accept -mtune=generic

[orent]

Zig Version

0.9.1

Steps to Reproduce

Compile c code with -mtune=generic

This option is frequently passed by some makefiles and build scripts and is frequently the only thing preventing zig cc from being an otherwise drop-in replacement. It should be safe to just ignore it.

Expected Behavior

Accept this gcc-ism

Actual Behavior

error: unknown target CPU 'generic'

[kassane]

This was already proposed in #4911

[orent]

This is not the same as #4911 which makes no mention of 'generic'

This proposal is specifically about value 'generic' which exists in gcc but not in llvm. It means a "a fairly old but not really ancient CPU target we will update from time".

Please reopen

[Vexu]

Clang does accept -mtune=generic, are you saying that it handles it differently?

[orent]

Oh, you're right.
"zig cc" does not accept it, but "zig clang" does

Targets accepted by zig clang but not zig cc are:
generic
goldmont-plus
core-avx-i
core-avx2
skylake-avx512
icelake-client
icelake-server
athlon-fx
x86-64

Neither accepts x86-64-v2, x86-64-v3, x86-64-v4

So is this included in #4911, after all?

[Vexu]

Sounds like it but feel free to mention it there too.