--- ray/src/CMakeLists.txt	2011/10/22 22:38:10	1.1
+++ ray/src/CMakeLists.txt	2015/05/08 18:07:38	1.4
@@ -7,11 +7,18 @@ else()
   set(LIB_M )
 endif()
 
-find_package(OpenGL)
-find_package(X11)
-
 include_directories(common)
-
+# create a macro to generate
+macro(create_version_file version_file)
+  add_custom_command(
+    OUTPUT "${version_file}"
+    COMMAND "${CMAKE_COMMAND}"
+    -DVERSION_OUT_FILE="${version_file}"
+    -DVERSION_IN_FILE="${radiance_SOURCE_DIR}/src/rt/VERSION"
+    -DVERSION_GOLD="${radiance_SOURCE_DIR}/src/rt/Version.c"
+    -P "${radiance_SOURCE_DIR}/src/rt/create_version.cmake"
+    )
+endmacro()
 add_subdirectory(common)
 add_subdirectory(cal)
 add_subdirectory(cv)
@@ -22,8 +29,8 @@ add_subdirectory(ot)
 add_subdirectory(px)
 add_subdirectory(rt)
 add_subdirectory(util)
-# only use rvu if qt4 is found
-if(QT4_FOUND)
+# only use rvu if qt5 is found
+if(Qt5Widgets_DIR)
   add_subdirectory(qtrvu)
 endif()