kbuild: modpost: Explicitly warn about unprototyped symbols
One common cause of modpost version generation failures is a failure to prototype exported assembly functions - the tooling requires this for exported functions even if they are not and should not be called from C code in order to do the version mangling for symbols. Unfortunately the error message is currently rather abstruse, simply saying that "version generation failed" and even diving into the code doesn't directly show what's going on since there's several steps between the problem and it being observed. Provide an explicit hint as to the likely cause of a version generation failure to help anyone who runs into this in future more readily diagnose and fix the problem. Signed-off-by:Mark Brown <broonie@kernel.org> Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org>
parent
74ee585b