Linus Torvalds writes: (Summary) wrote:
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.
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.
[...]
(b) actually error out if we find a bad compilerJust 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.
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.