diff --git a/codemp/renderer/qgl.h b/codemp/renderer/qgl.h
index 979c868..a4c8695 100644
--- a/codemp/renderer/qgl.h
+++ b/codemp/renderer/qgl.h
@@ -182,7 +182,7 @@ extern PFNGLGETCOMBINEROUTPUTPARAMETERIVNV		qglGetCombinerOutputParameterivNV;
 extern PFNGLGETFINALCOMBINERINPUTPARAMETERFVNV	qglGetFinalCombinerInputParameterfvNV;
 extern PFNGLGETFINALCOMBINERINPUTPARAMETERIVNV	qglGetFinalCombinerInputParameterivNV;
 
-
+#ifdef _WIN32
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // Pixel Format extension definitions. - AReis
 /***********************************************************************************************************/
@@ -251,6 +251,7 @@ typedef BOOL (WINAPI * PFNWGLSETPBUFFERATTRIBARBPROC) (HPBUFFERARB hPbuffer, con
 extern PFNWGLBINDTEXIMAGEARBPROC			qwglBindTexImageARB;
 extern PFNWGLRELEASETEXIMAGEARBPROC			qwglReleaseTexImageARB;
 extern PFNWGLSETPBUFFERATTRIBARBPROC		qwglSetPbufferAttribARB;
+#endif // _WIN32
 
 
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/codemp/renderer/tr_init.cpp b/codemp/renderer/tr_init.cpp
index 3e07a05..d53e8f0 100644
--- a/codemp/renderer/tr_init.cpp
+++ b/codemp/renderer/tr_init.cpp
@@ -251,6 +251,7 @@ PFNGLGETCOMBINEROUTPUTPARAMETERIVNV		qglGetCombinerOutputParameterivNV = NULL;
 PFNGLGETFINALCOMBINERINPUTPARAMETERFVNV	qglGetFinalCombinerInputParameterfvNV = NULL;
 PFNGLGETFINALCOMBINERINPUTPARAMETERIVNV	qglGetFinalCombinerInputParameterivNV = NULL;
 
+#ifdef _WIN32
 // Declare Pixel Format function pointers.
 PFNWGLGETPIXELFORMATATTRIBIVARBPROC		qwglGetPixelFormatAttribivARB = NULL;
 PFNWGLGETPIXELFORMATATTRIBFVARBPROC		qwglGetPixelFormatAttribfvARB = NULL;
@@ -267,6 +268,7 @@ PFNWGLQUERYPBUFFERARBPROC				qwglQueryPbufferARB = NULL;
 PFNWGLBINDTEXIMAGEARBPROC				qwglBindTexImageARB = NULL;
 PFNWGLRELEASETEXIMAGEARBPROC			qwglReleaseTexImageARB = NULL;
 PFNWGLSETPBUFFERATTRIBARBPROC			qwglSetPbufferAttribARB = NULL;
+#endif // _WIN32
 
 // Declare Vertex and Fragment Program function pointers.
 PFNGLPROGRAMSTRINGARBPROC qglProgramStringARB = NULL;
diff --git a/codemp/renderer/tr_local.h b/codemp/renderer/tr_local.h
index ae85e9e..19d6e7e 100644
--- a/codemp/renderer/tr_local.h
+++ b/codemp/renderer/tr_local.h
@@ -1156,6 +1156,7 @@ void		R_Modellist_f (void);
 class CPBUFFER
 {
 private:
+#ifdef _WIN32
 	// Pixel Buffer Rendering and Device Contexts.
 	HGLRC m_hRC;
 	HDC m_hDC;
@@ -1166,6 +1167,7 @@ private:
 
 	// Buffer handle.
 	HPBUFFERARB m_hBuffer;
+#endif
 
 	// Buffer Dimensions.
 	int m_iWidth, m_iHeight;