--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -251,7 +251,6 @@
 include_directories (${CMAKE_CURRENT_SOURCE_DIR}/external/squirrel/include/)
 include_directories (${CMAKE_CURRENT_SOURCE_DIR}/external/tinygettext/include/)
 include_directories (${CMAKE_CURRENT_SOURCE_DIR}/external/findlocale/)
-include_directories (${CMAKE_CURRENT_SOURCE_DIR}/external/obstack/)
 
 IF(WIN32)
   ADD_DEFINITIONS(-D_USE_MATH_DEFINES -DNOMINMAX)
@@ -260,7 +259,7 @@
 
 ## 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")