gnu: Add mingw-w64.

* gnu/packages/patches/gcc-4.9.3-mingw-gthr-default.patch,
gnu/packages/patches/mingw-w64-5.0rc2-gcc-4.9.3.patch,
gnu/packages/mingw.scm: New files.
* gnu/local.mk (dist_patch_DATA): Add the patches.
(GNU_SYSTEM_MODULES): Add mingw.scm.

2 files changed, 229 insertions, 0 deletions

diff --git a/gnu/packages/patches/gcc-4.9.3-mingw-gthr-default.patch b/gnu/packages/patches/gcc-4.9.3-mingw-gthr-default.patch
new file mode 100644
index 0000000000..0ea008a7cb
--- /dev/null
+++ b/gnu/packages/patches/gcc-4.9.3-mingw-gthr-default.patch
@@ -0,0 +1,11 @@
+--- a/libgcc/config/i386/gthr-win32.h	2016-03-30 07:45:33.388684463 +0200
++++ b/libgcc/config/i386/gthr-win32.h	2016-03-30 15:51:24.123896436 +0200
+@@ -30,7 +30,7 @@
+
+ /* Make sure CONST_CAST2 (origin in system.h) is declared.  */
+ #ifndef CONST_CAST2
+-#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
++#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)X)
+ #endif
+
+ /* Windows32 threads specific definitions. The windows32 threading model
diff --git a/gnu/packages/patches/mingw-w64-5.0rc2-gcc-4.9.3.patch b/gnu/packages/patches/mingw-w64-5.0rc2-gcc-4.9.3.patch
new file mode 100644
index 0000000000..e8f841c4fd
--- /dev/null
+++ b/gnu/packages/patches/mingw-w64-5.0rc2-gcc-4.9.3.patch
@@ -0,0 +1,218 @@
+This patch includes
+
+   * mingw-w64-headers/include/winnt.h: compile fixes for1 gcc-4.9.3
+   * mingw-w64-headers/crt/math.h: Likewise
+   * mingw-w64-headers/crt/float.h (FLT_EPSILON,DBL_EPSILON,LDBL_EPSILON): Add
+   symbols.
+   * mingw-w64-headers/crt/stat.h (S_ISLNK,S_ISSOCK,S_ISUID,S_ISGID,S_ISLINK):
+   Add symbols.
+   (lstat): Add function.
+   * mingw-w64-headers/crt/_mingw_stat64.h: Likewise
+   * mingw-w64-headers/crt/stdlib.h (realpath): Add function.
+
+Needed for building with gcc-4.9.3 and using with cross-libtool-2.4.6.
+
+Upstream status: not yet presented upstream.
+
+index 9c5cf87..74a8541 100644
+--- a/mingw-w64-crt/misc/dirname.c
++++ b/mingw-w64-crt/misc/dirname.c
+@@ -29,6 +29,12 @@
+ #define __cdecl  /* this may not be defined.                   */
+ #endif
+ 
++char *__cdecl
++realpath(const char *name, char *resolved)
++{
++  return resolved ? strcpy (resolved, name) : strdup (name);
++}
++
+ char * __cdecl
+ dirname(char *path)
+ {
+diff --git a/mingw-w64-headers/crt/_mingw_stat64.h b/mingw-w64-headers/crt/_mingw_stat64.h
+index 17e754c..7d2339b 100644
+--- a/mingw-w64-headers/crt/_mingw_stat64.h
++++ b/mingw-w64-headers/crt/_mingw_stat64.h
+@@ -2,13 +2,17 @@
+ 
+ #ifdef _USE_32BIT_TIME_T
+ #define _fstat32 _fstat
++#define _lstat32 _lstat
+ #define _stat32 _stat
+ #define _wstat32 _wstat
+ #define _fstat32i64 _fstati64
++#define _lstat32i64 _lstati64
+ #define _stat32i64 _stati64
+ #define _wstat32i64 _wstati64
+ #else
+ #define _fstat _fstat64i32
++#define _lstat _lstat64i32
++#define _lstati64 _lstat64
+ #define _fstati64 _fstat64
+ #define _stat _stat64i32
+ #define _stati64 _stat64
+diff --git a/mingw-w64-headers/crt/float.h b/mingw-w64-headers/crt/float.h
+index 5874f4e..bdf4ead 100644
+--- a/mingw-w64-headers/crt/float.h
++++ b/mingw-w64-headers/crt/float.h
+@@ -22,6 +22,15 @@
+ #if (__GNUC__ < 4)
+ #error Corrupt install of gcc-s internal headers, or search order was changed.
+ #else
++
++        /* From gcc-4.9.3 float.h.  */
++        #undef FLT_EPSILON
++        #undef DBL_EPSILON
++        #undef LDBL_EPSILON
++        #define FLT_EPSILON	__FLT_EPSILON__
++        #define DBL_EPSILON	__DBL_EPSILON__
++        #define LDBL_EPSILON	__LDBL_EPSILON__
++
+ 	/* #include_next <float_ginclude.h> */
+ 	
+    	/* Number of decimal digits, q, such that any floating-point number with q
+diff --git a/mingw-w64-headers/crt/math.h b/mingw-w64-headers/crt/math.h
+index 1e970f4..99a332f 100644
+--- a/mingw-w64-headers/crt/math.h
++++ b/mingw-w64-headers/crt/math.h
+@@ -216,6 +216,7 @@ extern "C" {
+ #endif
+   }
+ 
++#if 0
+   __CRT_INLINE long double __cdecl fabsl (long double x)
+   {
+ #ifdef __arm__
+@@ -226,6 +227,7 @@ extern "C" {
+     return res;
+ #endif
+   }
++#endif
+ 
+   __CRT_INLINE double __cdecl fabs (double x)
+   {
+@@ -905,7 +907,7 @@ __mingw_choose_expr (                                         \
+ /* 7.12.7.3  */
+   extern double __cdecl hypot (double, double) __MINGW_ATTRIB_DEPRECATED_MSVC2005; /* in libmoldname.a */
+   extern float __cdecl hypotf (float x, float y);
+-#ifndef __CRT__NO_INLINE
++#if 0 //ndef __CRT__NO_INLINE
+   __CRT_INLINE float __cdecl hypotf (float x, float y) { return (float) hypot ((double)x, (double)y);}
+ #endif
+   extern long double __cdecl hypotl (long double, long double);
+diff --git a/mingw-w64-headers/crt/stdlib.h b/mingw-w64-headers/crt/stdlib.h
+index dfc5ae4..6f0fee3 100644
+--- a/mingw-w64-headers/crt/stdlib.h
++++ b/mingw-w64-headers/crt/stdlib.h
+@@ -8,6 +8,7 @@
+ 
+ #include <crtdefs.h>
+ #include <limits.h>
++#include <string.h>
+ 
+ #if defined (__USE_MINGW_ANSI_STDIO) && ((__USE_MINGW_ANSI_STDIO + 0) != 0) && !defined (__USE_MINGW_STRTOX)
+ #define __USE_MINGW_STRTOX 1
+@@ -676,6 +677,8 @@ unsigned long __cdecl _lrotr(unsigned long,int);
+ 
+ #endif /* !__NO_ISOCEXT */
+ 
++char *__cdecl realpath (const char *name, char *resolved);
++
+ #ifdef __cplusplus
+ }
+ #endif
+diff --git a/mingw-w64-headers/crt/sys/stat.h b/mingw-w64-headers/crt/sys/stat.h
+index ed60219..d88b4f1 100644
+--- a/mingw-w64-headers/crt/sys/stat.h
++++ b/mingw-w64-headers/crt/sys/stat.h
+@@ -58,16 +58,21 @@ extern "C" {
+ #include <_mingw_stat64.h>
+ 
+ #define _S_IFMT 0xF000
++#define _S_IFLNK 0xA000
++#define _S_IFSOCK 0xC000
+ #define _S_IFDIR 0x4000
+ #define _S_IFCHR 0x2000
+ #define _S_IFIFO 0x1000
+ #define _S_IFREG 0x8000
++#define _S_ISUID 0x0400
++#define _S_ISGID 0x0200
+ #define _S_IREAD 0x0100
+ #define _S_IWRITE 0x0080
+ #define _S_IEXEC 0x0040
+ 
+   _CRTIMP int __cdecl _fstat32(int _FileDes,struct _stat32 *_Stat);
+   _CRTIMP int __cdecl _stat32(const char *_Name,struct _stat32 *_Stat);
++  static inline int __cdecl _lstat32(const char *_Name,struct _stat32 *_Stat) {return _stat32(_Name, _Stat);}
+   _CRTIMP int __cdecl _fstat64(int _FileDes,struct _stat64 *_Stat);
+   _CRTIMP int __cdecl _fstat32i64(int _FileDes,struct _stat32i64 *_Stat);
+   int __cdecl _fstat64i32(int _FileDes,struct _stat64i32 *_Stat);
+@@ -97,6 +102,9 @@ extern "C" {
+   _CRTIMP int __cdecl _stat64(const char *_Name,struct _stat64 *_Stat);
+   _CRTIMP int __cdecl _stat32i64(const char *_Name,struct _stat32i64 *_Stat);
+   int __cdecl _stat64i32(const char *_Name,struct _stat64i32 *_Stat);
++  static inline int __cdecl _lstat64(const char *_Name,struct _stat64 *_Stat) {return _stat64(_Name, _Stat);}
++  static inline int __cdecl _lstat32i64(const char *_Name,struct _stat32i64 *_Stat) {return _stat32i64(_Name, _Stat);}
++  static inline int __cdecl _lstat64i32(const char *_Name,struct _stat64i32 *_Stat) {return _stat64i32(_Name, _Stat);}
+ #ifndef __CRT__NO_INLINE
+   __CRT_INLINE int __cdecl _stat64i32(const char *_Name,struct _stat64i32 *_Stat)
+   {
+@@ -132,6 +140,8 @@ extern "C" {
+ #ifndef	NO_OLDNAMES
+ #define	_S_IFBLK	0x3000	/* Block: Is this ever set under w32? */
+ 
++#define S_IFLNK _S_IFLNK
++#define S_IFSOCK _S_IFSOCK
+ #define S_IFMT _S_IFMT
+ #define S_IFDIR _S_IFDIR
+ #define S_IFCHR _S_IFCHR
+@@ -162,6 +172,11 @@ extern "C" {
+ #define S_IXOTH    (S_IXGRP >> 3)
+ #define S_IRWXO    (S_IRWXG >> 3)
+ 
++#define S_ISUID _S_ISUID
++#define S_ISGID _S_ISGID
++
++#define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)
++#define S_ISSOCK(m)	(((m) & S_IFMT) == S_IFSOCK)
+ #define	S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)
+ #define	S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)
+ #define	S_ISCHR(m)	(((m) & S_IFMT) == S_IFCHR)
+@@ -174,6 +189,7 @@ extern "C" {
+ int __cdecl stat(const char *_Filename,struct stat *_Stat);
+ int __cdecl fstat(int _Desc,struct stat *_Stat);
+ int __cdecl wstat(const wchar_t *_Filename,struct stat *_Stat);
++static inline int __cdecl lstat(const char *_Filename,struct stat *_Stat){return stat(_Filename, _Stat);}
+ 
+ #ifndef __CRT__NO_INLINE
+ #ifdef _USE_32BIT_TIME_T
+@@ -262,9 +278,11 @@ __CRT_INLINE int __cdecl
+ 
+ #if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
+ #ifdef _USE_32BIT_TIME_T
++#define lstat _lstat32i64
+ #define stat _stat32i64
+ #define fstat _fstat32i64
+ #else
++#define lstat _lstat64
+ #define stat _stat64
+ #define fstat _fstat64
+ #endif
+diff --git a/mingw-w64-headers/include/winnt.h b/mingw-w64-headers/include/winnt.h
+index 52af29b..8626396 100644
+--- a/mingw-w64-headers/include/winnt.h
++++ b/mingw-w64-headers/include/winnt.h
+@@ -6895,7 +6895,12 @@ __buildmemorybarrier()
+ 	  DWORD Reg : 3;
+ 	  DWORD R : 1;
+ 	  DWORD L : 1;
++/* C is used as a const specifier */
++#define save_C C
++#undef C
+ 	  DWORD C : 1;
++#define C save_C
++#undef save_C
+ 	  DWORD StackAdjust : 10;
+ 	} DUMMYSTRUCTNAME;
+       } DUMMYUNIONNAME;