Use the compiler driver instead of ${AS}

[emaste]

Summary

As of commit fd71da37d478 we no longer have an as in the default toolchain and there is no value in keeping rules that use it.

[imp]

Yea, we have all .S files at this point

[emaste]

Note that D35864 needs to be addressed before this could be committed, and I think this warrants an exp-run as well.

[arichardson]

Maybe the rules for .s files should be updated to compile them using CC instead?

[emaste]

Maybe the rules for .s files should be updated to compile them using CC instead?

Yeah @jrtc27 also made that suggestion in D35864 and it makes sense; I will update. Although nothing in the base system uses the .s.o rules now there may be ports that do and it doesn't hurt to have the rules still.

[emaste]

share/mk/bsd.compat.mk

40

This can be removed either way, since we won't use $AS in the base system

[emaste]

• replace as rules with cc -x assembler

[arichardson]

I think the -x flag is not required since that is the default for .s but I don't think it does any harm.