diff -up stellarium-0.10.5/CMakeLists.txt.cm stellarium-0.10.5/CMakeLists.txt
--- stellarium-0.10.5/CMakeLists.txt.cm	2010-06-02 16:23:55.000000000 +0200
+++ stellarium-0.10.5/CMakeLists.txt	2010-06-03 13:23:05.030054816 +0200
@@ -32,8 +32,8 @@ ENDIF()
 
 
 IF(UNIX AND NOT WIN32)
- SET(CMAKE_C_FLAGS "-Wall -Wextra -Wno-unused-parameter")       # additional C compile flags
- SET(CMAKE_CXX_FLAGS "-Wall -Wextra")     # additional CPP compile flags
+ SET(CMAKE_C_FLAGS ${CMAKE_C_FLAGS})       # additional C compile flags
+ SET(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})     # additional CPP compile flags
 ELSE()
  SET(CMAKE_C_FLAGS "-Wall -fexceptions -fident -mthreads")
  SET(CMAKE_CXX_FLAGS "-Wall -Wsign-promo -fexceptions -fident -mthreads")