4 files changed, 8 insertions, 6 deletions
diff --git a/src/mesa/Makefile.mgw b/src/mesa/Makefile.mgw
index 336463ec78..80145e50f5 100644
--- a/src/mesa/Makefile.mgw
+++ b/src/mesa/Makefile.mgw
@@ -71,7 +71,7 @@ endif
 LDLIBS = -lgdi32
 
 CC = mingw32-gcc
-CFLAGS += -DBUILD_GL32 -D_OPENGL32_ -D_MSC_VER
+CFLAGS += -DBUILD_GL32 -D_OPENGL32_
 CFLAGS += $(INCLUDE_DIRS)
 CFLAGS += -DUSE_EXTERNAL_DXTN_LIB=1
 ifeq ($(FX),1)
diff --git a/src/mesa/drivers/windows/gdi/wmesa.c b/src/mesa/drivers/windows/gdi/wmesa.c
index 96cfafff4c..acd5f4a34f 100644
--- a/src/mesa/drivers/windows/gdi/wmesa.c
+++ b/src/mesa/drivers/windows/gdi/wmesa.c
@@ -18,7 +18,7 @@
  * Updated for Mesa 4.0 by Karl Schultz (kschultz@sourceforge.net)
  */
 
-#ifdef NDEBUG
+#if defined(NDEBUG) && defined(_MSC_VER)
 #pragma auto_inline(on)
 #pragma inline_depth(255)
 #pragma inline_recursion(on)
@@ -74,7 +74,7 @@
 /* Stereo and parallel not tested for Mesa 4.0. */
 #define NO_STEREO
 #if !defined(NO_STEREO)
-#include "gl\glu.h"
+#include "GL/glu.h"
 #include "stereo.h"
 #endif
 
@@ -114,6 +114,8 @@ WMesaContext WC = NULL;
 
 #if defined(_MSC_VER) && _MSC_VER >= 1200
 #define FORCEINLINE __forceinline
+#elif defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+#define FORCEINLINE __attribute__((always_inline))
 #else
 #define FORCEINLINE __inline
 #endif
diff --git a/src/mesa/drivers/windows/gdi/wmesadef.h b/src/mesa/drivers/windows/gdi/wmesadef.h
index 3c267aa0f6..d43e990ed3 100644
--- a/src/mesa/drivers/windows/gdi/wmesadef.h
+++ b/src/mesa/drivers/windows/gdi/wmesadef.h
@@ -70,7 +70,7 @@
 
 
 #include <windows.h>
-#include <GL\gl.h>
+#include <GL/gl.h>
 #include "context.h"
 #ifdef DDRAW
 #define DIRECTDRAW_VERSION 0x0100
diff --git a/src/mesa/main/glheader.h b/src/mesa/main/glheader.h
index 3057770d09..5068e90c60 100644
--- a/src/mesa/main/glheader.h
+++ b/src/mesa/main/glheader.h
@@ -98,10 +98,10 @@
 #      pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
 #    endif
 #  endif
-#  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
+#  if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
 #    define GLAPI __declspec(dllexport)
 #    define WGLAPI __declspec(dllexport)
-#  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
+#  elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
 #    define GLAPI __declspec(dllimport)
 #    define WGLAPI __declspec(dllimport)
 #  else /* for use with static link lib build of Win32 edition only */