Mesa (master): sgi: Fix MSVC build.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: fa7a051c251552c4581caadce772a29c64f6a850
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fa7a051c251552c4581caadce772a29c64f6a850

Author: José Fonseca <jfonseca at vmware.com>
Date:   Wed Apr 27 19:05:29 2011 +0100

sgi: Fix MSVC build.

Including windows.h was ineffective on MSVC because we define the NOGDI macro,
which skips the wingdi.h include.

Unsetting NOGDI is also a bad idea because it causes all sort of symbol
clashes with SGI code.

The real problem is that WINGDAPI was not being defined, also due to NOGDI,
so simply define it to blank if not done already.  This seems to make
everybody happy.

---

 src/glu/sgi/include/gluos.h  |    4 ++++
 src/glu/sgi/libutil/mipmap.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/src/glu/sgi/include/gluos.h b/src/glu/sgi/include/gluos.h
index 802aa84..ac0a787 100644
--- a/src/glu/sgi/include/gluos.h
+++ b/src/glu/sgi/include/gluos.h
@@ -60,6 +60,10 @@
 #pragma comment(linker, "/OPT:NOWIN98")
 #endif
 
+#ifndef WINGDIAPI
+#define WINGDIAPI
+#endif
+
 #elif defined(__OS2__)
 
 #include <stdlib.h>
diff --git a/src/glu/sgi/libutil/mipmap.c b/src/glu/sgi/libutil/mipmap.c
index 415dfaa..c475c96 100644
--- a/src/glu/sgi/libutil/mipmap.c
+++ b/src/glu/sgi/libutil/mipmap.c
@@ -6631,7 +6631,7 @@ static TexImage3Dproc pTexImage3D = 0;
 #  include <dlfcn.h>
 #  include <sys/types.h>
 #else
-#  include <windows.h>
+  WINGDIAPI PROC  WINAPI wglGetProcAddress(LPCSTR);
 #endif
 
 static void gluTexImage3D( GLenum target, GLint level,