--- cmake/Modules/Geant4InterfaceOptions.cmake.orig
+++ cmake/Modules/Geant4InterfaceOptions.cmake
@@ -174,22 +174,11 @@ if(UNIX)
     set(CMAKE_FIND_FRAMEWORK NEVER)
 
     set(X11_INC_SEARCH_PATH
-        /usr/pkg/xorg/include
-        /usr/X11R6/include 
-        /usr/X11R7/include 
-        /usr/include/X11
-        /usr/openwin/include 
-        /usr/openwin/share/include 
-        /opt/graphics/OpenGL/include
-        /opt/X11/include
+        @PREFIX@/include
         )
 
     set(X11_LIB_SEARCH_PATH
-        /usr/pkg/xorg/lib
-        /usr/X11R6/lib
-        /usr/X11R7/lib
-        /usr/openwin/lib 
-        /opt/X11/lib
+        @PREFIX@/lib
         )
 
     find_path(X11_Xmu_INCLUDE_PATH X11/Xmu/Xmu.h ${X11_INC_SEARCH_PATH})
@@ -232,17 +221,17 @@ if(UNIX)
       set(CMAKE_FIND_FRAMEWORK NEVER)
 
       find_path(OPENGL_X11_INCLUDE_DIR GL/gl.h
-        PATHS /usr/X11R6/include /opt/X11/include
+        PATHS @PREFIX@/include
         NO_DEFAULT_PATH
         )
 
       find_library(OPENGL_X11_gl_LIBRARY GL
-        PATHS /usr/X11R6/lib /opt/X11/lib
+        PATHS @PREFIX@/lib
         NO_DEFAULT_PATH
         )
 
       find_library(OPENGL_X11_glu_LIBRARY GLU
-        PATHS /usr/X11R6/lib /opt/X11/lib
+        PATHS @PREFIX@/lib
         NO_DEFAULT_PATH
         )