Add missing Windows files.

src/backend/port/dynloader/win.c

+/* Dummy file used for nothing at this point
+ *
+ * see win.h
+ */

src/backend/port/dynloader/win.h

+/*-------------------------------------------------------------------------
+ *
+ * win.h--
+ *	  port-specific prototypes for Intel x86/Window NT
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * win.h,v 1.2 1995/03/17 06:40:18 andrew Exp
+ *
+ *-------------------------------------------------------------------------
+  */
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include <dlfcn.h>
+#include "fmgr.h"				/* for func_ptr */
+#include "utils/dynamic_loader.h"
+
+ /* dynloader.c */
+/*
+ * Dynamic Loader on Intel x86/Windows NT
+ *
+ * this dynamic loader uses the system dynamic loading interface for shared
+ * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
+ * library as the file to be dynamically loaded.
+ *
+  */
+#define pg_dlopen(f)		dlopen(f,1)
+#define pg_dlsym		dlsym
+#define pg_dlclose		dlclose
+#define pg_dlerror		dlerror
+
+#endif	 /* PORT_PROTOS_H */

src/include/port/win.h

+#define JMP_BUF
+#define HAS_TEST_AND_SET
+typedef unsigned char slock_t;
+
+#ifndef O_DIROPEN
+#define O_DIROPEN	0x100000	/* should be in sys/fcntl.h */
+#endif

src/makefiles/Makefile.win

+CFLAGS+= -I/usr/local/include
+LDFLAGS+= -g
+DLLTOOL= dlltool
+DLLWRAP= dllwrap
+DLLLIBS=-L/usr/local/lib -L$(LIBDIR) -L$(SRCDIR)/backend -lpostgres -lcygipc -lcygwin -lcrypt -lkernel32
+X=.exe
+MK_NO_LORDER=true
+MAKE_DLL=true
+#MAKE_DLL=false
+SHLIB_LINK=$(DLLLIBS)
+
+%.dll: %.o
+	$(DLLTOOL) --export-all --output-def $*.def $<
+	$(DLLWRAP) -o $@ --def $*.def $< $(SRCDIR)/utils/dllinit.o $(DLLLIBS)
+	rm -f $*.def

src/template/cygwin32

+AROPT:crs
+CFLAGS:-O2 -g
+SHARED_LIB:
+ALL:
+SRCH_INC:/usr/local/include
+SRCH_LIB:/usr/local/lib
+USE_LOCALE:no
+DLSUFFIX:.dll
+YFLAGS:-d -L /sw/cygwin-b20/share/
+YACC:
+LIBS:-lcygipc

src/utils/dllinit.c

+/* dllinit.c -- Portable DLL initialization. 
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   Contributed by Mumit Khan (khan@xraylith.wisc.edu).
+
+   I've used DllMain as the DLL "main" since that's the most common 
+   usage. MSVC and Mingw32 both default to DllMain as the standard
+   callback from the linker entry point. Cygwin32 b19+ uses essentially 
+   the same, albeit slightly differently implemented, scheme. Please
+   see DECLARE_CYGWIN_DLL macro in <cygwin32/cygwin_dll.h> for more 
+   info on how Cygwin32 uses the callback function.
+
+   The real entry point is typically always defined by the runtime 
+   library, and usually never overridden by (casual) user. What you can 
+   override however is the callback routine that the entry point calls, 
+   and this file provides such a callback function, DllMain.
+
+   Mingw32: The default entry point for mingw32 is DllMainCRTStartup
+   which is defined in libmingw32.a This in turn calls DllMain which is
+   defined here. If not defined, there is a stub in libmingw32.a which
+   does nothing.
+
+   Cygwin32: The default entry point for cygwin32 b19 or newer is
+   __cygwin32_dll_entry which is defined in libcygwin.a. This in turn
+   calls the routine you supply to the DECLARE_CYGWIN_DLL (see below)
+   and, for this example, I've chose DllMain to be consistent with all
+   the other platforms.
+
+   MSVC: MSVC runtime calls DllMain, just like Mingw32.
+
+   Summary: If you need to do anything special in DllMain, just add it
+   here. Otherwise, the default setup should be just fine for 99%+ of
+   the time. I strongly suggest that you *not* change the entry point,
+   but rather change DllMain as appropriate.
+
+ */
+
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef WIN32_LEAN_AND_MEAN
+#include <stdio.h>
+
+BOOL APIENTRY DllMain (HINSTANCE hInst, DWORD reason, 
+                       LPVOID reserved /* Not used. */ );
+
+#ifdef __CYGWIN32__
+
+#include <cygwin/cygwin_dll.h>
+DECLARE_CYGWIN_DLL( DllMain );
+/* save hInstance from DllMain */
+HINSTANCE __hDllInstance_base;
+
+#endif /* __CYGWIN32__ */
+
+struct _reent *_impure_ptr;
+
+extern struct _reent *__imp_reent_data;
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DllMain --
+ *
+ *	This routine is called by the Mingw32, Cygwin32 or VC++ C run 
+ *	time library init code, or the Borland DllEntryPoint routine. It 
+ *	is responsible for initializing various dynamically loaded 
+ *	libraries.
+ *
+ * Results:
+ *      TRUE on sucess, FALSE on failure.
+ *
+ * Side effects:
+ *
+ *----------------------------------------------------------------------
+ */
+BOOL APIENTRY
+DllMain (
+	 HINSTANCE hInst /* Library instance handle. */ ,
+	 DWORD reason /* Reason this function is being called. */ ,
+	 LPVOID reserved /* Not used. */ )
+{
+
+#ifdef __CYGWIN32__
+  __hDllInstance_base = hInst;
+#endif /* __CYGWIN32__ */
+
+  _impure_ptr = __imp_reent_data;
+  
+  switch (reason)
+    {
+    case DLL_PROCESS_ATTACH:
+      break;
+
+    case DLL_PROCESS_DETACH:
+      break;
+
+    case DLL_THREAD_ATTACH:
+      break;
+
+    case DLL_THREAD_DETACH:
+      break;
+    }
+  return TRUE;
+}
+