add support for macos version suffix

[jprochazk]

• Closes Add support for version suffixes for Apple targets #488

[messense]

I wonder if we should also support parsing MACOSX_DEPLOYMENT_TARGET env var and include the version in zig target?

[jprochazk]

I wonder if we should also support parsing MACOSX_DEPLOYMENT_TARGET env var and include the version in zig target?

I was only thinking about the glibc version suffix when implementing this, but when compiling on macOS for an older version, setting that env var is what you'd normally do, so it'd make sense to support it as well.

The issue is what happens if you set both the version suffix and MACOSX_DEPLOYMENT_TARGET. Maybe the --target version suffix shouldn't be supported at all, and only the env var should work? That is the "standard" way to provide the version after all, zig is an outlier here. That being said, --target with version suffix seems nicer to me than the env var.

[messense]

Maybe the --target version suffix shouldn't be supported at all, and only the env var should work? That is the "standard" way to provide the version after all, zig is an outlier here.

Sorry for the late reply, was on vacation. This sounds good to me.