added GLEW

CMake/FindGLEW.cmake

@@ -0,0 +1,31 @@
+# Tries to find GLEW
+#
+# Sets variables
+#   GLEW_FOUND
+#   GLEW_INCLUDE_DIR
+#   GLEW_LIBRARIES
+#
+SET (GLEW_FOUND FALSE)
+
+FIND_PATH (GLEW_INCLUDE_DIR glew.h /usr/include/ /usr/local/include/ /usr/include/GL /usr/local/include/GL $ENV{GLEW_PATH}/include $ENV{GLEW_INCLUDE_PATH})
+
+FIND_LIBRARY (GLEW_LIBRARIES NAMES GLEW PATHS /usr/lib /usr/local/lib $ENV{GLEW_PATH} $ENV{GLEW_PATH}/lib ENV{GLEW_LIBRARY_PATH})
+
+IF (GLEW_INCLUDE_DIR AND GLEW_LIBRARIES)
+	SET (GLEW_FOUND TRUE)
+ENDIF (GLEW_INCLUDE_DIR AND GLEW_LIBRARIES)
+
+IF (GLEW_FOUND)
+   IF (NOT GLEW_FIND_QUIETLY)
+      MESSAGE(STATUS "Found GLEW: ${GLEW_LIBRARIES}")
+   ENDIF (NOT GLEW_FIND_QUIETLY)
+ELSE (GLEW_FOUND)
+   IF (GLEW_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find GLEW")
+   ENDIF (GLEW_FIND_REQUIRED)
+ENDIF (GLEW_FOUND)
+
+MARK_AS_ADVANCED (
+	GLEW_INCLUDE_DIR
+	GLEW_LIBRARIES
+	)