Messages in this thread | | | From | Miguel Ojeda <> | Date | Mon, 6 Jul 2020 06:48:58 +0200 | Subject | Re: [PATCH] kbuild: make Clang build userprogs for target architecture |
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Hi Masahiro,
On Sun, Jul 5, 2020 at 5:30 PM Masahiro Yamada <masahiroy@kernel.org> wrote: > > Hmm, adding '#include <sys/types.h>' did not make any difference.
That should have worked, because POSIX defines it to be there. It sounds like you need --sysroot to point it to the proper ones.
> If I add -std=c99, I get a different error.
Yeah, that is the expected behavior. C99 does not have the implicit int rule anymore (unlike older C) so ssize_t (an unknown type given that program) is not being interpreted as int anymore (which is what triggers the warning later about the mismatch between size_t and int in the format string).
> In contrast, 'size_t' has no problem.
That is expected too, because size_t is defined via stdio.h (size_t is a C standard type, ssize_t is not -- it is a POSIX one).
Hope that helps,
Cheers, Miguel
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