crt: Remove oscalls.h

This header file is not installed and the only useful part of it is
inclusion of windows.h.

Files crtdll.c and crtexe.c already include windows.h.

Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-crt/Makefile.am

diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index c266b33..4cfbe53 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -115,7 +115,7 @@
 src_libntoskrnl=libsrc/memcmp.c
 src_libdloadhelper=libsrc/dloadhelper.c misc/delay-f.c
 
-src_libmingw32=include/oscalls.h include/internal.h include/sect_attribs.h \
+src_libmingw32=include/internal.h include/sect_attribs.h \
   crt/crtexewin.c     crt/dll_argv.c  crt/gccmain.c     crt/natstart.c  crt/pseudo-reloc-list.c  crt/wildcard.c \
   crt/charmax.c       crt/ucrtexewin.c crt/dllargv.c    crt/_newmode.c  crt/tlssup.c             crt/xncommod.c \
   crt/cinitexe.c      crt/merr.c      crt/pesect.c      crt/udllargc.c  crt/xthdloc.c \
@@ -4483,7 +4483,7 @@
 #
 
 noinst_HEADERS = libsrc/dxerr.c \
- include/internal.h include/oscalls.h include/sect_attribs.h
+ include/internal.h include/sect_attribs.h
 
 
 # Cleaning options

mingw-w64-crt/crt/crtdll.c

diff --git a/mingw-w64-crt/crt/crtdll.c b/mingw-w64-crt/crt/crtdll.c
index a605c95..18e831e 100644
--- a/mingw-w64-crt/crt/crtdll.c
+++ b/mingw-w64-crt/crt/crtdll.c
@@ -4,7 +4,6 @@
  * No warranty is given; refer to the file DISCLAIMER.PD within this package.
  */
 
-#include <oscalls.h>
 #include <internal.h>
 #include <stdlib.h>
 #include <windows.h>

mingw-w64-crt/crt/crtexe.c

diff --git a/mingw-w64-crt/crt/crtexe.c b/mingw-w64-crt/crt/crtexe.c
index 35e1933..6e19ce7 100644
--- a/mingw-w64-crt/crt/crtexe.c
+++ b/mingw-w64-crt/crt/crtexe.c
@@ -4,7 +4,6 @@
  * No warranty is given; refer to the file DISCLAIMER.PD within this package.
  */
 
-#include <oscalls.h>
 #include <internal.h>
 #include <process.h>
 #include <signal.h>

mingw-w64-crt/include/oscalls.h

diff --git a/mingw-w64-crt/include/oscalls.h b/mingw-w64-crt/include/oscalls.h
deleted file mode 100644
index 670a6f7..0000000
--- a/mingw-w64-crt/include/oscalls.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-
-#ifndef _INC_OSCALLS
-#define _INC_OSCALLS
-
-#ifndef _CRTBLD
-#error ERROR: Use of C runtime library internal header file.
-#endif
-
-#include <crtdefs.h>
-
-#ifdef NULL
-#undef NULL
-#endif
-
-#define NOMINMAX
-
-#define _WIN32_FUSION 0x0100
-#include <windows.h>
-
-#ifndef NULL
-#ifdef __cplusplus
-#define NULL 0
-#else
-#define NULL ((void *)0)
-#endif
-#endif
-
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable:4214)
-#endif
-
-typedef struct _FTIME
-{
-  unsigned short twosecs : 5;
-  unsigned short minutes : 6;
-  unsigned short hours : 5;
-} FTIME;
-
-typedef FTIME *PFTIME;
-
-typedef struct _FDATE
-{
-  unsigned short day : 5;
-  unsigned short month : 4;
-  unsigned short year : 7;
-} FDATE;
-
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
-typedef FDATE *PFDATE;
-
-#endif

mingw-w64-crt/misc/dllmain.c

diff --git a/mingw-w64-crt/misc/dllmain.c b/mingw-w64-crt/misc/dllmain.c
index 7f97b0a..3f5b526 100644
--- a/mingw-w64-crt/misc/dllmain.c
+++ b/mingw-w64-crt/misc/dllmain.c
@@ -1,4 +1,4 @@
-#include <oscalls.h>
+#include <windows.h>
 #define _DECL_DLLMAIN
 #include <process.h>