Re: branch emacs-28 build broken on MinGW64 with gcc 11

[wsw0108]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: wsw0108@qq.com
>> Date: Tue, 23 Nov 2021 20:19:49 +0800
>>
>> The error messages as below:
>>
>> $ make
>> make -C nt all
>> make[1]: Entering directory '/d/GitHub/emacs/nt'
>> make[1]: Nothing to be done for 'all'.
>> make[1]: Leaving directory '/d/GitHub/emacs/nt'
>> make -C lib all
>> make[1]: Entering directory '/d/GitHub/emacs/lib'
>> make[1]: Nothing to be done for 'all'.
>> make[1]: Leaving directory '/d/GitHub/emacs/lib'
>> make -C lib-src all
>> make[1]: Entering directory '/d/GitHub/emacs/lib-src'
>>   CC       ntlib.o
>> In file included from ../lib/time.h:44,
>>                  from ntlib.c:35:
>> ../lib/unistd.h:624:3: error: #error "Please include config.h first."
>>   624 |  #error "Please include config.h first."
>>       |   ^~~~~
>> ../lib/unistd.h:626:24: error: expected ';' before 'extern'
>>   626 | _GL_INLINE_HEADER_BEGIN
>
> The Gnulib's unistd.h should not be generated in the MinGW builds.
> The file nt/gnulib-cfg.mk has this line:
>
>   OMIT_GNULIB_MODULE_unistd = true
>
> which causes the build process not to generate lib/unistd.h from
> lib/unistd.in.h.  You need to investigate why this file was
> nevertheless generated on your system.  Perhaps that tree was
> previously used for building another configuration, and you didn't say
> "make extraclean" before reconfiguring?  Or maybe something is wrong
> with your build environment?
>
> I'd start with cloning a fresh Git repository and trying anew.
>
> Bottom line: the problem is most probably specific to your system.
>
> Thanks.

Sorry, it's my mistake.

After run 'git clean -fdx', the building process can continue without errors.