On Sun, Feb 11, 2018 at 10:13 AM, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > That actually sounds like we could just > > (a) make gcc 4.5 be the minimum required version > > (b) actually error out if we find a bad compiler Just to explain why that's different from what we do not (apart from the "error out" thing to actually actively discourage broken compilers): it simplifies things if we can just add a trivial check as part of the build process rather than as part of the configuration. If we don't have to make it part of the configuration, we can use all the normal Kconfig rules and build rules, and then we can add the error check to any number of places where we already do various object file munging. For example, it would be pretty trivial to do the "check that there's the right segment access" as part of link-vmlinux.sh or something. And that would allow us to just use all the regular config infrastructure, including the (hopefully by 4.17) "cc-option" thing at Kconfig time. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html