GNUstep and Windows

[tobeythorn]

I very much want to get objective c working in windows, but I'm a bit
frustrated after many attempts.
I've compiled clang and installed GNUstep. I'm trying to compile a
simple "hello world".

#import <Foundation/Foundation.h>
int main(int argc, char **argv) {}

The command I am using to compile is via command prompt is:
clang hello.m -o hello -I c:/gnustep/gnustep/system/library/headers -L
c:/gnustep/gnustep/system/library/libraries/ -I c:/gnustep/mingw/
include -ObjC

Your help is greatly appreciated! Here is the compiler output:

D:\mirrored\clangTestProject>clang hello.m -o hello -I c:/gnustep/
gnustep/system
/library/headers -L c:/gnustep/gnustep/system/library/libraries/ -I c:/
gnustep/m
ingw/include -ObjC
In file included from hello.m:6:
In file included from c:/gnustep/gnustep/system/library/headers/
Foundation/Found
ation.h:30:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/GSVe
rsionMacros.h:193:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/GSCo
nfig.h:226:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/pref
ace.h:82:
In file included from c:/gnustep/gnustep/system/library/headers/objc/
objc-api.h:
33:
c:/gnustep/gnustep/system/library/headers/objc/objc-decls.h(32) :
error:
      invalid preprocessing directive
# The following code is not needed on MinGW >= 5.1.3 since the
compiler ...
  ^
c:/gnustep/gnustep/system/library/headers/objc/objc-decls.h(33) :
error:
      invalid preprocessing directive
# determine which symbols to import/export, at least when
compiling ...
  ^
In file included from hello.m:6:
In file included from c:/gnustep/gnustep/system/library/headers/
Foundation/Found
ation.h:30:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/GSVe
rsionMacros.h:193:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/GSCo
nfig.h:226:
In file included from c:/gnustep/gnustep/system/library/headers/
GNUstepBase/pref
ace.h:82:
In file included from c:/gnustep/gnustep/system/library/headers/objc/
objc-api.h:
34:
c:/gnustep/mingw/include/stdio.h(208) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
extern int __mingw_stdio_redirect__(vfprintf)(FILE*, const char*,
__VALIST);
                                                                  ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(209) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
extern int __mingw_stdio_redirect__(vprintf)(const char*, __VALIST);
                                                          ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(210) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
extern int __mingw_stdio_redirect__(vsprintf)(char*, const char*,
__VALIST);
                                                                  ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(211) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
  ...size_t, const char*, __VALIST);
                          ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(296) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW vfprintf (FILE*, const char*,
__VALIST);
                                                                  ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(297) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW vprintf (const char*, __VALIST);
                                                          ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(297) :  warning: incompatible
redeclaration of
      library function 'vprintf'
_CRTIMP int __cdecl __MINGW_NOTHROW vprintf (const char*, __VALIST);
                                    ^
c:/gnustep/mingw/include/stdio.h(297) :  note: 'vprintf' is a builtin
with type
      'int (char const *, __builtin_va_list)'
c:/gnustep/mingw/include/stdio.h(298) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW vsprintf (char*, const char*,
__VALIST);
                                                                  ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(298) :  warning: incompatible
redeclaration of
      library function 'vsprintf'
_CRTIMP int __cdecl __MINGW_NOTHROW vsprintf (char*, const char*,
__VALIST);
                                    ^
c:/gnustep/mingw/include/stdio.h(298) :  note: 'vsprintf' is a builtin
with type

      'int (char *, char const *, __builtin_va_list)'
c:/gnustep/mingw/include/stdio.h(311) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __mingw_stdio_redirect__(vfprintf)(FILE*, const char*,
__VALIST);
                                                                   ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(312) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __mingw_stdio_redirect__(vprintf)(const char*, __VALIST);
                                                           ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(313) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __mingw_stdio_redirect__(vsprintf)(char*, const char*,
__VALIST);
                                                                   ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(320) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
  ...__MINGW_NOTHROW _vsnprintf (char*, size_t, const char*,
__VALIST);
                                                             ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(321) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW _vscprintf (const char*,
__VALIST);
                                                             ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(332) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
int __cdecl __MINGW_NOTHROW vsnprintf (char *, size_t, const char *,
__VALIST);
                                                                     ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(332) :  warning: incompatible
redeclaration of
      library function 'vsnprintf'
int __cdecl __MINGW_NOTHROW vsnprintf (char *, size_t, const char *,
__VALIST);
                            ^
c:/gnustep/mingw/include/stdio.h(332) :  note: 'vsnprintf' is a
builtin with
      type 'int (char *, unsigned int, char const *,
__builtin_va_list)'
c:/gnustep/mingw/include/stdio.h(334) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
int __cdecl __MINGW_NOTHROW vscanf (const char * __restrict__,
__VALIST);
                                                               ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(336) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
                     __VALIST);
                     ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(338) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
                     const char * __restrict__, __VALIST);
                                                ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(566) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
  ...__cdecl __MINGW_NOTHROW     vfwprintf (FILE*, const wchar_t*,
__VALIST);
                                                                   ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(567) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW     vwprintf (const wchar_t*,
__VALIST);
                                                                  ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(568) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
  ..._vsnwprintf (wchar_t*, size_t, const wchar_t*, __VALIST);
                                                    ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(569) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
_CRTIMP int __cdecl __MINGW_NOTHROW     _vscwprintf (const wchar_t*,
__VALIST);
                                                                     ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(580) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
  ...__MINGW_NOTHROW     vswprintf (wchar_t*, const wchar_t*,
__VALIST);
                                                              ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(606) :  error: unknown type name
      '__gnuc_va_list'
  ...vsnwprintf (wchar_t* s, size_t n, const wchar_t* format, __VALIST
arg);
                                                              ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(612) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
int __cdecl __MINGW_NOTHROW vwscanf (const wchar_t * __restrict__,
__VALIST);
                                                                   ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(614) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
                       const wchar_t * __restrict__, __VALIST);
                                                     ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
c:/gnustep/mingw/include/stdio.h(616) :  warning: type specifier
missing,
      defaults to 'int' [-Wimplicit-int]
                       const wchar_t * __restrict__, __VALIST);
                                                     ^
c:/gnustep/mingw/include/stdio.h:114:18: note: instantiated from:
#define __VALIST __gnuc_va_list
                 ^
In file included from hello.m:6:
In file included from c:/gnustep/gnustep/system/library/headers/
Foundation/Found
ation.h:94:
In file included from c:/gnustep/gnustep/system/library/headers/
Foundation/NSPor
tMessage.h:30:
c:/gnustep/gnustep/system/library/headers/Foundation/NSPort.h(40) :
fatal error
:
      'sys/socket.h' file not found
#include        <sys/socket.h>
                ^
27 warnings and 4 errors generated.

D:\mirrored\clangTestProject>