--- supertux-0.5.0/CMakeLists.txt
+++ supertux-0.5.0/CMakeLists.txt
@@ -382,7 +382,6 @@
 include_directories(${CMAKE_BINARY_DIR}/)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src/)
 include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/external/findlocale/)
-include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/external/obstack/)
 include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/external/sexp-cpp/include/)
 
 IF(WIN32)
@@ -392,7 +391,7 @@
 
 ## Build list of sources for supertux binary
 
-FILE(GLOB SUPERTUX_SOURCES_C RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} external/obstack/*.c external/findlocale/findlocale.c)
+FILE(GLOB SUPERTUX_SOURCES_C RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} external/findlocale/findlocale.c)
 
 FILE(GLOB SUPERTUX_SOURCES_CXX RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} src/*/*.cpp src/supertux/menu/*.cpp src/video/sdl/*.cpp)
 FILE(GLOB SUPERTUX_RESOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${PROJECT_BINARY_DIR}/tmp/*.rc")
