diff --git a/code/nel/include/nel/3d/driver.h b/code/nel/include/nel/3d/driver.h
index 3eb5823ca..c04fffcdf 100644
--- a/code/nel/include/nel/3d/driver.h
+++ b/code/nel/include/nel/3d/driver.h
@@ -182,7 +182,7 @@ public:
 							IDriver();
 	virtual					~IDriver();
 
-	virtual bool			init(uint windowIcon = 0, emptyProc exitFunc = 0) = 0;
+	virtual bool			init(uintptr_t windowIcon = 0, emptyProc exitFunc = 0) = 0;
 
 	/// Deriver should calls IDriver::release() first, to destroy all driver components (textures, shaders, VBuffers).
 	virtual bool			release();
diff --git a/code/nel/include/nel/3d/driver_user.h b/code/nel/include/nel/3d/driver_user.h
index 30ea98c65..ff9ba8973 100644
--- a/code/nel/include/nel/3d/driver_user.h
+++ b/code/nel/include/nel/3d/driver_user.h
@@ -123,7 +123,7 @@ public:
 
 	/// \name Object
 	// @{
-	CDriverUser (uint windowIcon, UDriver::TDriver driver, emptyProc exitFunc = 0);
+	CDriverUser (uintptr_t windowIcon, UDriver::TDriver driver, emptyProc exitFunc = 0);
 	virtual	~CDriverUser();
 	// @}
 
diff --git a/code/nel/include/nel/3d/dru.h b/code/nel/include/nel/3d/dru.h
index 115f86432..fda543ecd 100644
--- a/code/nel/include/nel/3d/dru.h
+++ b/code/nel/include/nel/3d/dru.h
@@ -24,8 +24,11 @@
 #include "nel/misc/geom_ext.h"
 #include "nel/misc/line.h"
 
-
-#ifdef NL_OS_WINDOWS
+#if defined (NL_COMP_MINGW)
+# define NL3D_GL_DLL_NAME "libnel_drv_opengl_win"
+# define NL3D_GLES_DLL_NAME "libnel_drv_opengles_win"
+# define NL3D_D3D_DLL_NAME "libnel_drv_direct3d_win"
+#elif defined (NL_OS_WINDOWS)
 # define NL3D_GL_DLL_NAME "nel_drv_opengl_win"
 # define NL3D_GLES_DLL_NAME "nel_drv_opengles_win"
 # define NL3D_D3D_DLL_NAME "nel_drv_direct3d_win"
diff --git a/code/nel/include/nel/3d/u_driver.h b/code/nel/include/nel/3d/u_driver.h
index 2e74ae3fe..67e0c30fd 100644
--- a/code/nel/include/nel/3d/u_driver.h
+++ b/code/nel/include/nel/3d/u_driver.h
@@ -845,8 +845,8 @@ public:
 	/**
 	 *	This is the static function which build a UDriver, the root for all 3D functions.
 	 */
-	static	UDriver			*createDriver(uint windowIcon = 0, bool direct3d = false, emptyProc exitFunc = 0);
-	static	UDriver			*createDriver(uint windowIcon, TDriver driver, emptyProc exitFunc = 0);
+	static	UDriver			*createDriver(uintptr_t windowIcon = 0, bool direct3d = false, emptyProc exitFunc = 0);
+	static	UDriver			*createDriver(uintptr_t windowIcon, TDriver driver, emptyProc exitFunc = 0);
 
 	/**
 	 *	Purge static memory
diff --git a/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp b/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
index 864406205..814ddbf1c 100644
--- a/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
+++ b/code/nel/src/3d/driver/direct3d/driver_direct3d.cpp
@@ -1231,7 +1231,7 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM l
 
 // ***************************************************************************
 
-bool CDriverD3D::init (uint windowIcon, emptyProc exitFunc)
+bool CDriverD3D::init (uintptr_t windowIcon, emptyProc exitFunc)
 {
 	H_AUTO_D3D(CDriver3D_init );
 
diff --git a/code/nel/src/3d/driver/direct3d/driver_direct3d.h b/code/nel/src/3d/driver/direct3d/driver_direct3d.h
index 1055e105c..36a1c9804 100644
--- a/code/nel/src/3d/driver/direct3d/driver_direct3d.h
+++ b/code/nel/src/3d/driver/direct3d/driver_direct3d.h
@@ -839,7 +839,7 @@ public:
 	// ***************************************************************************
 
 	// Mode initialisation, requests
-	virtual bool			init (uint windowIcon = 0, emptyProc exitFunc = 0);
+	virtual bool			init (uintptr_t windowIcon = 0, emptyProc exitFunc = 0);
 	virtual bool			setDisplay(nlWindow wnd, const GfxMode& mode, bool show, bool resizeable) throw(EBadDisplay);
 	virtual bool			release();
 	virtual bool			setMode(const GfxMode& mode);
diff --git a/code/nel/src/3d/driver/opengl/CMakeLists.txt b/code/nel/src/3d/driver/opengl/CMakeLists.txt
index aea202e8b..9e9e05918 100644
--- a/code/nel/src/3d/driver/opengl/CMakeLists.txt
+++ b/code/nel/src/3d/driver/opengl/CMakeLists.txt
@@ -37,7 +37,7 @@ NL_ADD_RUNTIME_FLAGS(${NLDRV_OGL_LIB})
 IF(WIN32)
   INCLUDE_DIRECTORIES(${DXSDK_INCLUDE_DIR})
   TARGET_LINK_LIBRARIES(${NLDRV_OGL_LIB} ${DXSDK_DINPUT_LIBRARY} ${DXSDK_GUID_LIBRARY})
-  ADD_DEFINITIONS(/DDRIVER_OPENGL_EXPORTS)
+  ADD_DEFINITIONS(-DDRIVER_OPENGL_EXPORTS)
 ENDIF(WIN32)
 
 IF(APPLE)
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl.cpp b/code/nel/src/3d/driver/opengl/driver_opengl.cpp
index e8cb57a22..9ec29f0ba 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl.cpp
@@ -108,7 +108,10 @@ IDriver* createGlDriverInstance ()
 #else
 
 #ifdef NL_OS_WINDOWS
-
+#ifdef NL_COMP_MINGW
+extern "C"
+{
+#endif
 __declspec(dllexport) IDriver* NL3D_createIDriverInstance ()
 {
 	return new CDriverGL;
@@ -118,7 +121,9 @@ __declspec(dllexport) uint32 NL3D_interfaceVersion ()
 {
 	return IDriver::InterfaceVersion;
 }
-
+#ifdef NL_COMP_MINGW
+}
+#endif
 #elif defined (NL_OS_UNIX)
 
 extern "C"
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl.def b/code/nel/src/3d/driver/opengl/driver_opengl.def
index bfe648552..369389fa9 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl.def
+++ b/code/nel/src/3d/driver/opengl/driver_opengl.def
@@ -1,2 +1,4 @@
-EXPORTS NL3D_createIDriverInstance
-EXPORTS NL3D_interfaceVersion
+LIBRARY nel_drv_opengl_win_r
+EXPORTS
+	NL3D_createIDriverInstance
+	NL3D_interfaceVersion
\ No newline at end of file
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl.h b/code/nel/src/3d/driver/opengl/driver_opengl.h
index 57f73b0b6..46d12eef1 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl.h
+++ b/code/nel/src/3d/driver/opengl/driver_opengl.h
@@ -304,7 +304,7 @@ public:
 
 	virtual	bool			isLost() const { return false; } // there's no notion of 'lost device" in OpenGL
 
-	virtual bool			init (uint windowIcon = 0, emptyProc exitFunc = 0);
+	virtual bool			init (uintptr_t windowIcon = 0, emptyProc exitFunc = 0);
 
 	virtual void			disableHardwareVertexProgram();
 	virtual void			disableHardwarePixelProgram();
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
index 07c800cdc..2fea530cf 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
@@ -296,7 +296,7 @@ bool GlWndProc(CDriverGL *driver, XEvent &e)
 #endif // NL_OS_UNIX
 
 // ***************************************************************************
-bool CDriverGL::init (uint windowIcon, emptyProc exitFunc)
+bool CDriverGL::init (uintptr_t windowIcon, emptyProc exitFunc)
 {
 	H_AUTO_OGL(CDriverGL_init)
 
diff --git a/code/nel/src/3d/driver/opengl/stdopengl.h b/code/nel/src/3d/driver/opengl/stdopengl.h
index 544829b19..9773b0048 100644
--- a/code/nel/src/3d/driver/opengl/stdopengl.h
+++ b/code/nel/src/3d/driver/opengl/stdopengl.h
@@ -37,7 +37,9 @@
 
 #ifdef NL_OS_WINDOWS
 #	define WIN32_LEAN_AND_MEAN
-#	define NOMINMAX
+#	ifndef NL_COMP_MINGW
+#		define NOMINMAX
+#	endif
 #	include <windows.h>
 #	include <windowsx.h>
 #endif
diff --git a/code/nel/src/3d/driver_user.cpp b/code/nel/src/3d/driver_user.cpp
index e5d814755..7ccf4cfce 100644
--- a/code/nel/src/3d/driver_user.cpp
+++ b/code/nel/src/3d/driver_user.cpp
@@ -82,13 +82,13 @@ void					UDriver::setMatrixMode2D43()
 }
 
 // ***************************************************************************
-UDriver					*UDriver::createDriver(uint windowIcon, bool direct3d, emptyProc exitFunc)
+UDriver					*UDriver::createDriver(uintptr_t windowIcon, bool direct3d, emptyProc exitFunc)
 {
 	return new CDriverUser (windowIcon, direct3d ? CDriverUser::Direct3d:CDriverUser::OpenGl, exitFunc);
 }
 
 // ***************************************************************************
-UDriver					*UDriver::createDriver(uint windowIcon, TDriver driver, emptyProc exitFunc)
+UDriver					*UDriver::createDriver(uintptr_t windowIcon, TDriver driver, emptyProc exitFunc)
 {
 	return new CDriverUser (windowIcon, (CDriverUser::TDriver)driver, exitFunc);
 }
@@ -114,7 +114,7 @@ bool	CDriverUser::_StaticInit= false;
 
 
 // ***************************************************************************
-CDriverUser::CDriverUser (uint windowIcon, TDriver driver, emptyProc exitFunc)
+CDriverUser::CDriverUser (uintptr_t windowIcon, TDriver driver, emptyProc exitFunc)
 {
 	// The enum of IDriver and UDriver MUST be the same!!!
 	nlassert((uint)IDriver::idCount == (uint)UDriver::idCount);