Re: mbsinit problem with inlined original

[Michael Goffioul]

On Sun, May 2, 2010 at 8:27 PM, Bruno Haible <address@hidden> wrote:
> Hi,
>
> Michael Goffioul wrote:
>> When trying to compile gnulib (from octave), it fails at compiling
>> mbsinit.c. It seems this is due to the fact that on my system (MSVC)
>> mbsinit is declared inlined in wchar.h. The configure script fails to
>> detect the system mbsinit, because of link error, and the compiler
>> fails to compile the replacement, because of duplicate body for the
>> same function (the inlined one in wchar.h and the replacement one).
>>
>> Can this problem be solved at gnulib level?
>
> You are free to submit a patch to this list, if you also explain
> the compilation errors ("because of link error" is too vague - show
> the error) and verify that with your patch, the error goes away.

Sorry, I should probably have been clearer. But the problem is
quite generic in the sense that AC_CHECK_FUNCS will fail
to detect inlined function, as the target function does not exist
in any library that you can link to.

So in m4/mbsinit.m4, AC_CHECK_FUNCS_ONCE([mbsinit])
fails and brings in compilation of mbsinit.c replacement. Compilation
of that replacement fails, because the replacement code clashes
with the inlined system version.

For completeness, I attached the relevant parts from the configure
step (extracted from config.log) and the compilation step.

Michael.

mbsinit_configure.log
Description: Binary data

mbsinit_compile.log
Description: Binary data