Re: [Mingw-users] Conflicts in headers from mingw/include

[Maxim B. <bv...@gm...>]

I apologise, but after some efforts my problem slightly modified
(though it is still related to headers) . Now I'll try be as clear and
precise as possible.

So, this time I installed everything via GUI mingw-get: mingw32-base,
mingw32-fortran, mingw32-gcc-g++, mingw-developer-toolkit, msys-base.

As a post-install action, to connect mingw and msys, I created fstab
file in C:\MinGW\msys\1.0\etc\ and wrote "c:/mingw/ /mingw" like in
fstab.sample file. That's how I installed MinGW and msys.

Then I tried to install libiconv: I put the uncompressed directory to
"C:\msys\1.0\home". After that I ran the following inside the
directory in msys shell:

$ ./configure --prefix=/mingw
$ make 2> log

Here's the contents of the log:

  In file included from ./sys/stat.h:44:0,
                   from ./fcntl.h:54,
                   from careadlinkat.h:23,
                   from areadlink.c:27:
  c:\mingw\include\parts\time.h:65:8: error: redefinition of 'struct
rpl_timespec'
   struct timespec
          ^
  ./time.h:387:8: note: originally defined here
   struct timespec
          ^
  make[2]: *** [areadlink.o] Error 1
  make[1]: *** [all] Error 2
  make: *** [all] Error 2

As you can see, there is a conflict between the time.h taken from
c:\mingw\include and the one provided by installation directory
(c:\msys\1.0\home\libiconv-1.14/srclib/time.h).

What should I do to fix that?




2015-07-12 11:25 GMT+03:00 Keith Marshall <kei...@us...>:
> On 12/07/15 01:50, Maxim Blumental wrote:
>> I have a problem with my mingw which I faced when tried to build
>> libiconv. I got following errors:
>>
>> c:\mingw\include\unistd.h:109:5: error: conflicting types for 'nanosleep'
>>  int nanosleep( const struct timespec *period, struct timespec *residual )
>>      ^
>> c:\mingw\include\unistd.h:105:5: note: previous declaration of
>> 'nanosleep' was here
>>  int nanosleep( const struct timespec *, struct timespec * );
>
> With a simple test case, I cannot reproduce this.
>
>> In the unistd.h header there is a line including time.h (105)
>
> I don't see that. Around line 96, I see:
>
>    94   #define _FAKE_TIME_H_SOURCED 1
>    95   #define __need_struct_timespec
>    96   #include <parts/time.h>
>
> and then, at line 105:
>
>   105   __cdecl __MINGW_NOTHROW
>   106   int nanosleep( const struct timespec *, struct timespec * );
>
>> and a line which again declares it (109)
>
> Here, I see:
>
>   108   #ifndef __NO_INLINE__
>   109   __CRT_INLINE __LIBIMPL__(( FUNCTION = nanosleep ))
>   110   int nanosleep(
>           const struct timespec *period, struct timespec *residual )
>   111   {
>   112     if( residual != (void *)(0) )
>   113       residual->__tv64_sec = (__time64_t)(residual->tv_nsec = 0);
>   114     return __mingw_sleep((unsigned)(period->__tv64_sec),
>             (period->__tv64_sec < 0LL)
>   115       ? (unsigned)(-1) : (unsigned)(period->tv_nsec));
>   116   }
>   117   #endif
>
>> which causes the conflict.
>
> You'll have to provide a SSCCE, to demonstrate that. To me, the in-line
> definition running from lines 109..116 looks entirely consistent with
> the prototype declared on lines 105..106, and there is certainly no
> conflict when I compile and run my own SSCCE:
>
>   $ cat foo.cpp
>   #include <iostream>
>   #include <unistd.h>
>
>   int main()
>   {
>     struct timespec delay = { 2.0, 0.0 };
>     std::cout << "Waiting ... "; nanosleep( &delay, NULL );
>     std::cout << "done." << std::endl;
>     return 0;
>   }
>
>   $ mingw32-g++ -o foo.exe foo.cpp
>
>   $ ./foo.exe; less -fF /dev/null
>   Waiting ... done.
>
> Note: this is cross-compiled on a GNU/Linux host, and run under wine;
> the "less -fF /dev/null", after execution, is to repair the damage wine
> inflicts on my terminal configuration.  During execution of foo.exe, I
> see the expected 2s delay between output of "Waiting ... " and "done."
>
> --
> Regards,
> Keith.
>
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-- 


---------------------
Sincerely yours,
Maxim Blumental