diff --git a/configure.in b/configure.in
index e02047bab7c6..68fec442e47b 100644
--- a/configure.in
+++ b/configure.in
@@ -7719,6 +7719,7 @@ XPCOM_LIBS="$LIBXUL_LIBS"
 
 if test "$OS_ARCH" = "WINNT"; then
   GKMEDIAS_SHARED_LIBRARY=1
+  AC_DEFINE(GKMEDIAS_SHARED_LIBRARY)
 fi
 AC_SUBST(GKMEDIAS_SHARED_LIBRARY)
 
diff --git a/gfx/2d/Factory.cpp b/gfx/2d/Factory.cpp
index 86f740c235eb..501dcb11e254 100644
--- a/gfx/2d/Factory.cpp
+++ b/gfx/2d/Factory.cpp
@@ -53,7 +53,7 @@
 
 #include "mozilla/CheckedInt.h"
 
-#ifdef PR_LOGGING
+#if defined(DEBUG) || defined(PR_LOGGING)
 PRLogModuleInfo *
 GetGFX2DLog()
 {
@@ -156,7 +156,7 @@ namespace mozilla {
 namespace gfx {
 
 // XXX - Need to define an API to set this.
-int sGfxLogLevel = LOG_DEBUG;
+GFX2D_API int sGfxLogLevel = LOG_DEBUG;
 
 #ifdef WIN32
 ID3D10Device1 *Factory::mD3D10Device;
diff --git a/gfx/2d/Logging.h b/gfx/2d/Logging.h
index 4b6bda276aac..f508f6aebd5b 100644
--- a/gfx/2d/Logging.h
+++ b/gfx/2d/Logging.h
@@ -14,10 +14,17 @@
 #include "Matrix.h"
 
 #ifdef WIN32
-#include <windows.h>
+// This file gets included from nsGlobalWindow.cpp, which doesn't like
+// having windows.h included in it. Since OutputDebugStringA is the only
+// thing we need from windows.h, we just declare it here directly.
+// Note: the function's documented signature is
+//  WINBASEAPI void WINAPI OutputDebugStringA(LPCSTR lpOutputString)
+// but if we don't include windows.h, the macros WINBASEAPI, WINAPI, and 
+// LPCSTR are not defined, so we need to replace them with their expansions.
+extern "C" __declspec(dllimport) void __stdcall OutputDebugStringA(const char* lpOutputString);
 #endif
 
-#ifdef PR_LOGGING
+#if defined(DEBUG) || defined(PR_LOGGING)
 #include <prlog.h>
 
 extern PRLogModuleInfo *GetGFX2DLog();
@@ -29,7 +36,7 @@ namespace gfx {
 const int LOG_DEBUG = 1;
 const int LOG_WARNING = 2;
 
-#ifdef PR_LOGGING
+#if defined(DEBUG) || defined(PR_LOGGING)
 
 inline PRLogModuleLevel PRLogLevelForLevel(int aLevel) {
   switch (aLevel) {
@@ -43,7 +50,7 @@ inline PRLogModuleLevel PRLogLevelForLevel(int aLevel) {
 
 #endif
 
-extern int sGfxLogLevel;
+extern GFX2D_API int sGfxLogLevel;
 
 static inline void OutputMessage(const std::string &aString, int aLevel) {
 #if defined(WIN32) && !defined(PR_LOGGING)
diff --git a/gfx/2d/Rect.h b/gfx/2d/Rect.h
index 647244284357..7f52af898351 100644
--- a/gfx/2d/Rect.h
+++ b/gfx/2d/Rect.h
@@ -97,7 +97,7 @@ struct RectTyped :
         Super(float(rect.x), float(rect.y),
               float(rect.width), float(rect.height)) {}
 
-    GFX2D_API void NudgeToIntegers()
+    void NudgeToIntegers()
     {
       NudgeToInteger(&(this->x));
       NudgeToInteger(&(this->y));
diff --git a/gfx/2d/Types.h b/gfx/2d/Types.h
index ec0943334470..f59e8956d737 100644
--- a/gfx/2d/Types.h
+++ b/gfx/2d/Types.h
@@ -246,7 +246,7 @@ struct GradientStop
 }
 }
 
-#if defined(XP_WIN) && defined(MOZ_GFX)
+#if defined(XP_WIN) && defined(GKMEDIAS_SHARED_LIBRARY)
 #ifdef GFX2D_INTERNAL
 #define GFX2D_API __declspec(dllexport)
 #else
diff --git a/gfx/2d/moz.build b/gfx/2d/moz.build
index c2b7518eb1c4..c1b7cda628a1 100644
--- a/gfx/2d/moz.build
+++ b/gfx/2d/moz.build
@@ -21,6 +21,7 @@ EXPORTS.mozilla.gfx += [
     'DataSurfaceHelpers.h',
     'Filters.h',
     'Helpers.h',
+    'Logging.h',
     'Matrix.h',
     'PathHelpers.h',
     'Point.h',