--- eigen-eigen-13a11181fc5a/CMakeLists.txt.orig	2011-12-06 14:15:10.000000000 +0100
+++ eigen-eigen-13a11181fc5a/CMakeLists.txt	2012-01-31 17:26:58.373450532 +0100
@@ -14,13 +14,6 @@
   set(CMAKE_BUILD_TYPE "Release")
 endif()
 
-string(TOLOWER "${CMAKE_BUILD_TYPE}" cmake_build_type_tolower)
-if(    NOT cmake_build_type_tolower STREQUAL "debug"
-   AND NOT cmake_build_type_tolower STREQUAL "release"
-   AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo")
-  message(FATAL_ERROR "Unknown build type \"${CMAKE_BUILD_TYPE}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).")
-endif()
-
 
 #############################################################################
 # retrieve version infomation                                               #