xgl: add verbose cmake option
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa2c6d1..60d6f82 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@
 project (XGL) 
 set (XGL_VERSION_MAJOR 0)
 set (XGL_VERSION_MINOR 1)
+# set (CMAKE_VERBOSE_MAKEFILE 1)
 
 # Header file for CMake settings
 configure_file (