aarch64: disable LIB32 with gcc

[brooks]

Summary

gcc doesn't have -m32 support on aarch64 so mark LIB32 broken there.

We have to check both COMPILER_TYPE and X_COMPILER_TYPE becuase
X_COMPILER_TYPE is only conditionally set and COMPILER_TYPE is the host
compiler in Makefile.inc1.

[brooks]

The easiest way to address this would probably be a cross toolchain wrapper script that picks the right compiler when -m32 is on the command line, but just disabling it for now seems reasonable. (I'm trying to test make tinderbox with gcc13 and this was one of the issues I encountered.)

[jrtc27]

share/mk/src.opts.mk

306

Won't this do weird things at the top level if CC is gcc but XCC is clang?

[brooks]

share/mk/src.opts.mk

306

I guess we might want ((defined(X_COMPILER_TYPE) && ${X_COMPILER_TYPE} != "gcc") || (!defined(X_COMPILER_TYPE) && ${COMPILER_TYPE} != "gcc")) instead so we only consider COMPILER_TYPE when X_COMPILER_TYPE is not defined.

[brooks]

• sort arch list
• examine X_COMPILER_TYPE if defined and COMPILER_TYPE iff X_COMPILER_TYPE is not defined.

[• karels]

I have no objection to this, but don't know the vagaries of the different compilers.

[emaste]

Is there an issue open somewhere for the gcc deficiency?

[brooks]

I've created a tracking bug https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278879.