Re: [gccsdk] Cross-compiling header issues

On 26/10/2020 13:13, Dominic Hamon wrote:
> Hello
>
> I'm embarking on my first attempt to cross-compile something for riscos.
> I have the environment all set up and figured out how to make the
> project, but i'm not sure what the appropriate fix is for an issue:
>
> The project in question (https://github.com/google/benchmark) runs a
> check at build time to see which regex engine is available (std::regix,
> posix regex, or gnu posix regex). It does this by compiling some test
> programs and seeing which succeeds. The issue is that none do for riscos
> (yet).
>
> The closest I get is with the posix regex version, which includes
> `regex.h`. This fails with the error:
>
> $ $CXX posix_regex.cpp
> In file included from posix_regex.cpp:1:0:
> /home/dominic/gccsdk/cross/lib/gcc/arm-unknown-riscos/4.7.4/../../../../arm-unknown-riscos/include/regex.h:56:2:
> error: 'size_t' does not name a type
>
> I believe I could fix this by including <sys/types.h> in the crosslib's
> regex.h (linux does this
> https://code.woboq.org/linux/include/regex.h.html#23) but is this
> appropriate? It seems like the right fix to me as regex.h shouldn't be
> using types that haven't been declared.
>
> Would this change be acceptable?

It does sound like regex.h should be including sys/types.h. If you make
this change locally in your environment, does the project build? If so,
then I will commit it.

Thanks,
Lee.

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