better way of dealing with EXTRALIBS_xxx

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23457 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

build/bakefiles/opengl.bkl

@@ -29,16 +29,7 @@
         <!-- link against the wxWin library in monolithic build: -->
         <sys-lib>$(WXLIB_MONO)</sys-lib>
 
-        <if cond="FORMAT=='autoconf'">
-            <ldflags>$(EXTRALIBS_OPENGL)</ldflags>
-        </if>
-        <!-- system libraries on windows: -->
-        <if cond="FORMAT!='autoconf'">
-            <if cond="COMPILER=='wat' or COMPILER=='gcc'">
-                <sys-lib>opengl32</sys-lib>
-                <sys-lib>glu32</sys-lib>
-            </if>
-        </if>        
+        <ldlibs>$(EXTRALIBS_OPENGL)</ldlibs>
     </dll>
     
     <lib id="gllib" template="wx_lib"