Re: [PATCH v2] travis-ci: enable more warnings on travis linux-gcc job

Jeff King [off-list ref] writes:

Unfortunately I think that's hard to do in pure make. But we're already
relying on $(shell) here, so we could just move the logic there.

Something like the patch below, perhaps. It should do the right thing on
clang and gcc, and I added in an extra clang-only warning I've found
useful. Otherwise the list of flags comes from your patch.

I see this discussion is going in the right direction, and like the
approach taken by this "how about this" patch.

Thanks.