Merge pull request #2163 from Grumbel/feature/nix-flake-no-submodule

Refactor CMakeLists.txt, split into smaller pieces, accept more system libraries

Author: Grumbel

CMakeLists.txt

@@ -0,0 +1,84 @@
+option(DISABLE_CPACK_BUNDLING "Build an .app bundle without CPack" OFF)
+
+include(InstallRequiredSystemLibraries)
+set(DIRS ${Boost_LIBRARY_DIRS} ${CMAKE_CURRENT_BINARY_DIR}/external/squirrel ${CMAKE_CURRENT_BINARY_DIR}/external/tinygettext)
+
+if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT DISABLE_CPACK_BUNDLING)
+  set(INFOPLIST_CFBUNDLEEXECUTABLE "SuperTux")
+
+  find_package(PNG)
+  foreach(_file ${PNG_LIBRARIES})
+    get_filename_component(_resolvedFile "${_file}" REALPATH)
+    get_filename_component(_name "${_file}" NAME)
+    install(FILES ${_resolvedFile} DESTINATION "MacOS" RENAME ${_name})
+  endforeach()
+  find_package(JPEG)
+  foreach(_file ${JPEG_LIBRARIES})
+    get_filename_component(_resolvedFile "${_file}" REALPATH)
+    get_filename_component(_name "${_file}" NAME)
+    install(FILES ${_resolvedFile} DESTINATION "MacOS" RENAME ${_name})
+  endforeach()
+
+  install(CODE "
+       if(\"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/\" MATCHES \".*\\\\.app.*\")
+       include(BundleUtilities)
+       fixup_bundle(\"${APPS}\"   \"\"   \"${DIRS}\")
+       endif()
+       ")
+
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/info.plist.in" "${CMAKE_BINARY_DIR}/tools/darwin/info.plist")
+
+  set(CPACK_BUNDLE_NAME "SuperTux")
+  set(CPACK_BUNDLE_PLIST "${CMAKE_BINARY_DIR}/tools/darwin/info.plist")
+  set(CPACK_BUNDLE_ICON "${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.icns")
+  set(CPACK_BUNDLE_STARTUP_COMMAND "${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/startup.sh")
+  set(CPACK_DMG_VOLUME_NAME "SuperTux ${SUPERTUX_VERSION_STRING}")
+  set(CPACK_DMG_DS_STORE_SETUP_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/dsstore_setup.scpt")
+  set(CPACK_DMG_BACKGROUND_IMAGE "${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/background.png")
+endif()
+
+set(CPACK_PACKAGE_NAME "SuperTux")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Jump'n'Run Game featuring Tux")
+set(CPACK_PACKAGE_VENDOR "SuperTux Devel Team")
+set(CPACK_PACKAGE_CONTACT "SuperTux Devel Team <[email protected]>")
+set(CPACK_SOURCE_IGNORE_FILES "/\\\\.git/;${CMAKE_BINARY_DIR};/\\\\..*")
+set(CPACK_DEBIAN_PACKAGE_NAME "supertux2")
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "libc6 (>= 2.5), libgcc1 (>= 1:4.1), libgl1-mesa-glx | libgl1, libogg0 (>= 1.1.3), libopenal0a, libphysfs-1.0-0, libsdl-image1.2 (>= 1.2.5), libsdl1.2debian (>= 1.2.10-1), libstdc++6 (>= 4.1.2), libvorbis0a (>= 1.1.2), libvorbisfile3 (>= 1.1.2), libcurl3 (>= 7.16)")
+set(CPACK_DEBIAN_PACKAGE_DESCRIPTION "Classic 2D jump 'n run sidescroller with Tux\n SuperTux is a classic 2D jump 'n run sidescroller game in a similar\n style like the original SuperMario games. This release of SuperTux\n features 9 enemies, 26 playable levels, software and OpenGL rendering\n modes, configurable joystick and keyboard input, new music and\n completely redone graphics.\n .\n This is a development snapshot of SuperTux. It may suffer from\n critical bugs and has not been fully tested. \n .\n Homepage: http://supertux.lethargik.org/")
+set(CPACK_DEBIAN_PACKAGE_SECTION "games")
+set(CPACK_RPM_PACKAGE_NAME "supertux2")
+set(CPACK_RPM_PACKAGE_DESCRIPTION "Classic 2D jump 'n run sidescroller with Tux\n SuperTux is a classic 2D jump 'n run sidescroller game in a similar\n style like the original SuperMario games. This release of SuperTux\n features 9 enemies, 26 playable levels, software and OpenGL rendering\n modes, configurable joystick and keyboard input, new music and\n completely redone graphics.\n .\n This is a development snapshot of SuperTux. It may suffer from\n critical bugs and has not been fully tested. \n .\n Homepage: http://supertux.lethargik.org/")
+set(CPACK_RPM_PACKAGE_LICENSE "GNU General Public License (GPL)")
+set(CPACK_RPM_PACKAGE_GROUP "Amusements/Games/Action/Arcade")
+set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/README.md")
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.txt")
+set(CPACK_PACKAGE_VERSION_MAJOR ${SUPERTUX_VERSION_MAJOR})
+set(CPACK_PACKAGE_VERSION_MINOR ${SUPERTUX_VERSION_MINOR})
+
+if(SUPERTUX_VERSION_TWEAK)
+  set(CPACK_PACKAGE_VERSION_PATCH "${SUPERTUX_VERSION_PATCH}.${SUPERTUX_VERSION_TWEAK}")
+else()
+  set(CPACK_PACKAGE_VERSION_PATCH ${SUPERTUX_VERSION_PATCH})
+endif()
+
+set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${SUPERTUX_VERSION_STRING}-${SUPERTUX_SYSTEM_NAME}")
+set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${SUPERTUX_VERSION_STRING}-Source")
+set(CPACK_PACKAGE_INSTALL_DIRECTORY "SuperTux")
+set(CPACK_PACKAGE_EXECUTABLES "supertux2" "SuperTux")
+
+if(WIN32 AND NOT UNIX)
+  set(CPACK_NSIS_INSTALLED_ICON_NAME "supertux2")
+  set(CPACK_NSIS_DISPLAY_NAME "SuperTux")
+  set(CPACK_NSIS_COMPRESSOR "/SOLID lzma")
+  set(CPACK_WIX_PROGRAM_MENU_FOLDER "")
+  set(CPACK_WIX_UPGRADE_GUID "93E16F4E-0A68-422A-8ADC-47BE5B9433B2")
+  set(CPACK_WIX_PRODUCT_ICON "${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.ico")
+
+  set(CPACK_WIX_UI_BANNER "${CMAKE_CURRENT_SOURCE_DIR}/mk/wix/banner.png")
+  set(CPACK_WIX_UI_DIALOG "${CMAKE_CURRENT_SOURCE_DIR}/mk/wix/dialog.png")
+  set(CPACK_GENERATOR WIX)
+endif()
+
+include(CPack)
+
+# EOF #

mk/cmake/SuperTux/BuildCPack.cmake

@@ -0,0 +1,21 @@
+## Configure doxygen
+# Adapted from https://tty1.net/blog/2014/cmake-doxygen_en.html
+# add a target to generate API documentation with Doxygen
+option(BUILD_DOCUMENTATION "Build API documentation using Doxygen" ${DOXYGEN_FOUND})
+
+if(BUILD_DOCUMENTATION)
+  find_package(Doxygen REQUIRED)
+
+  set(doxyfile_in ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
+  set(doxyfile ${CMAKE_CURRENT_BINARY_DIR}/docs/Doxyfile)
+
+  configure_file(${doxyfile_in} ${doxyfile} @ONLY)
+
+  add_custom_target(doc
+    COMMAND ${DOXYGEN_EXECUTABLE} ${doxyfile}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMENT "Generating API documentation with Doxygen"
+    VERBATIM)
+endif()
+
+# EOF #

mk/cmake/SuperTux/BuildDocumentation.cmake

@@ -0,0 +1,103 @@
+if(WIN32 AND NOT UNIX)
+  if(VCPKG_BUILD)
+    install(DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/\${CMAKE_INSTALL_CONFIG_NAME}/" DESTINATION ${INSTALL_SUBDIR_BIN} FILES_MATCHING PATTERN "*.dll")
+  else()
+    install(FILES ${DLLS} DESTINATION ${INSTALL_SUBDIR_BIN})
+  endif()
+
+  install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.png ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.ico DESTINATION ".")
+
+  option(PACKAGE_VCREDIST "Package the VCREDIST libraries with the program" OFF)
+
+  if(PACKAGE_VCREDIST)
+    set(CMAKE_INSTALL_UCRT_LIBRARIES true)
+    include(InstallRequiredSystemLibraries)
+  endif()
+
+else()
+  if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND DISABLE_CPACK_BUNDLING)
+
+    set(INFOPLIST_CFBUNDLEEXECUTABLE "supertux2")
+
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/info.plist.in ${CMAKE_BINARY_DIR}/tools/darwin/info.plist)
+    install(FILES ${CMAKE_BINARY_DIR}/tools/darwin/info.plist DESTINATION "SuperTux.app/Contents/")
+    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/tools/darwin/receipt DESTINATION "SuperTux.app/Contents/_MASReceipt/")
+
+    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.png ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.icns DESTINATION "SuperTux.app/Contents/Resources/")
+
+  else()
+
+    if(UBUNTU_TOUCH)
+      set(LINUX_DESKTOP_ICON "assets/supertux-256x256.png")
+      # FIXME: The "install" folder is a folder managed by Clickable and shouldn't be hardcoded here
+      configure_file(${CMAKE_CURRENT_SOURCE_DIR}/supertux2.desktop.in "install/supertux2.desktop")
+      install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/mk/clickable/supertux2.apparmor DESTINATION ".")
+      configure_file(${CMAKE_CURRENT_SOURCE_DIR}/mk/clickable/manifest.json.in ${CMAKE_CURRENT_BINARY_DIR}/install/manifest.json)
+      set(APPS "\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/supertux2")
+      install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux-256x256.png DESTINATION "assets")
+    else()
+      set(LINUX_DESKTOP_ICON "supertux2")
+      configure_file(${CMAKE_CURRENT_SOURCE_DIR}/supertux2.desktop.in "supertux2.desktop")
+      install(FILES ${CMAKE_BINARY_DIR}/supertux2.desktop DESTINATION "share/applications")
+      set(APPS "\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${INSTALL_SUBDIR_BIN}/supertux2")
+      install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.png ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.xpm DESTINATION "share/pixmaps/")
+    endif()
+
+    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/supertux2.svg DESTINATION "share/icons/hicolor/scalable/apps")
+
+  endif()
+endif()
+
+if(UBUNTU_TOUCH)
+  install(TARGETS supertux2 DESTINATION ".")
+else()
+  install(TARGETS supertux2 DESTINATION ${INSTALL_SUBDIR_BIN})
+endif()
+
+if(EMSCRIPTEN)
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/mk/emscripten/template.html.in ${CMAKE_CURRENT_BINARY_DIR}/template.html)
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/mk/emscripten/supertux2.png ${CMAKE_CURRENT_BINARY_DIR}/supertux2.png COPYONLY)
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/mk/emscripten/supertux2_bkg.png ${CMAKE_CURRENT_BINARY_DIR}/supertux2_bkg.png COPYONLY)
+endif()
+
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/INSTALL.md ${CMAKE_CURRENT_SOURCE_DIR}/README.md ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.txt ${CMAKE_CURRENT_SOURCE_DIR}/NEWS.md DESTINATION ${INSTALL_SUBDIR_DOC})
+
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/data/credits.stxt DESTINATION ${INSTALL_SUBDIR_SHARE})
+
+install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/supertux2.appdata.xml DESTINATION "share/metainfo" )
+
+install(DIRECTORY
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/images
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/fonts
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/music
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/particles
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/scripts
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/shader
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/speech
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/sounds
+  ${CMAKE_CURRENT_SOURCE_DIR}/data/locale
+  DESTINATION ${INSTALL_SUBDIR_SHARE})
+
+if(CMAKE_BUILD_TYPE MATCHES "Release|RelWithDebInfo")
+  install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data/levels
+    DESTINATION ${INSTALL_SUBDIR_SHARE}
+    PATTERN "data/levels/test" EXCLUDE
+    PATTERN "data/levels/test_old" EXCLUDE
+    PATTERN "data/levels/incubator" EXCLUDE
+    PATTERN "data/levels/misc/menu.stl.in" EXCLUDE)
+else()
+  install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data/levels
+    DESTINATION ${INSTALL_SUBDIR_SHARE}
+    PATTERN "data/levels/misc/menu.stl.in" EXCLUDE)
+endif()
+
+install(FILES "${CMAKE_BINARY_DIR}/data/levels/misc/menu.stl" DESTINATION "${INSTALL_SUBDIR_SHARE}/levels/misc")
+
+# move some config clutter to the advanced section
+mark_as_advanced(
+  INSTALL_SUBDIR_BIN
+  INSTALL_SUBDIR_SHARE
+  INSTALL_SUBDIR_DOC
+  )
+
+# EOF #

mk/cmake/SuperTux/BuildInstall.cmake

@@ -0,0 +1,55 @@
+## If xgettext is available, generate messages.pot for sources
+option(GENERATE_MESSAGESPOT "Generate messages.pot files" OFF)
+
+if(GENERATE_MESSAGESPOT)
+  find_program(XGETTEXT_EXECUTABLE xgettext)
+
+  if(NOT XGETTEXT_EXECUTABLE)
+    message(STATUS "Warning: xgettext not found - will not update messages.pot")
+  else()
+    message(STATUS "Found xgettext: ${XGETTEXT_EXECUTABLE}")
+
+    set(MESSAGES_POT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/data/locale/messages.pot)
+    add_custom_command(
+      OUTPUT ${MESSAGES_POT_FILE}
+      COMMAND ${XGETTEXT_EXECUTABLE}
+      ARGS --keyword=_ --language=C++ --output=${MESSAGES_POT_FILE} ${SUPERTUX_SOURCES_CXX}
+      DEPENDS ${SUPERTUX_SOURCES_CXX}
+      WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+      COMMENT "Generating POT file ${MESSAGES_POT_FILE}"
+      )
+    list(APPEND MESSAGES_POT_FILES ${MESSAGES_POT_FILE})
+
+    file(GLOB SUPERTUX_LEVEL_DIRS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} data/levels/*)
+    foreach(SUPERTUX_LEVEL_DIR ${SUPERTUX_LEVEL_DIRS})
+      file(GLOB SUPERTUX_LEVELS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${SUPERTUX_LEVEL_DIR}/*.stl ${SUPERTUX_LEVEL_DIR}/*.stwm ${SUPERTUX_LEVEL_DIR}/*.txt)
+
+      ## Do not add target if SUPERTUX_LEVELS is empty. This is needed for cmake <=2.4
+      if(SUPERTUX_LEVELS)
+        set(MESSAGES_POT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${SUPERTUX_LEVEL_DIR}/messages.pot)
+        add_custom_command(
+          OUTPUT ${MESSAGES_POT_FILE}
+          COMMAND ${XGETTEXT_EXECUTABLE}
+          ARGS --keyword="_:1" --language=Lisp --force-po --sort-by-file "--output=${MESSAGES_POT_FILE}" ${SUPERTUX_LEVELS}
+          DEPENDS ${SUPERTUX_LEVELS}
+          WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+          COMMENT "Generating POT file ${MESSAGES_POT_FILE}"
+          )
+        list(APPEND MESSAGES_POT_FILES ${MESSAGES_POT_FILE})
+      endif()
+
+    endforeach(SUPERTUX_LEVEL_DIR)
+
+    add_custom_target(
+      supertux2-messages ALL
+      DEPENDS ${MESSAGES_POT_FILES}
+      )
+
+  endif()
+
+  mark_as_advanced(
+    XGETTEXT_EXECUTABLE
+    )
+endif()
+
+# EOF #

mk/cmake/SuperTux/BuildMessagePot.cmake

@@ -0,0 +1,18 @@
+option(GENERATE_WRAPPER "Build miniswig and generate the wrapper" OFF)
+if(GENERATE_WRAPPER)
+  add_subdirectory(tools/miniswig)
+  add_custom_command(
+    OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.cpp ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.hpp
+    COMMAND cd ${CMAKE_CURRENT_SOURCE_DIR} && ${CMAKE_CXX_COMPILER}
+    ARGS -x "c++" -E -CC -DSCRIPTING_API src/scripting/wrapper.interface.hpp -o ${CMAKE_CURRENT_BINARY_DIR}/miniswig.tmp -I${CMAKE_CURRENT_SOURCE_DIR}/src
+    COMMAND tools/miniswig/miniswig
+    ARGS --input miniswig.tmp --output-cpp ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.cpp --output-hpp ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.hpp --module supertux --select-namespace scripting
+    DEPENDS tools/miniswig/miniswig
+    IMPLICIT_DEPENDS CXX ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.interface.hpp
+    )
+  if(USE_CLANG_TIDY)
+    set_target_properties(miniswig PROPERTIES CXX_CLANG_TIDY "")
+  endif()
+endif()
+
+# EOF #

mk/cmake/SuperTux/BuildMiniswigWrapper.cmake

@@ -0,0 +1,47 @@
+option(BUILD_TESTS "Build test cases" OFF)
+
+if(BUILD_TESTS)
+  find_package(Threads REQUIRED)
+  find_package(GTest REQUIRED)
+
+  # build SuperTux tests
+  file(GLOB_RECURSE TEST_SUPERTUX_SOURCES tests/*.cpp)
+  add_executable(test_supertux2 ${TEST_SUPERTUX_SOURCES})
+  target_compile_options(test_supertux2 PRIVATE ${WARNINGS_CXX_FLAGS})
+  target_link_libraries(test_supertux2
+    GTest::GTest GTest::Main
+    supertux2_lib
+    ${CMAKE_THREAD_LIBS_INIT})
+
+  # add 'make test' target, use 'make test ARGS="-V"' or 'ctest -V' for verbose
+  enable_testing()
+  add_test(NAME test_supertux2
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMAND test_supertux2)
+
+  # Prepare coverage with gcov/lcov
+  if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+      target_compile_options(supertux2_lib PUBLIC -fprofile-arcs -ftest-coverage)
+      target_link_options(supertux2_lib PUBLIC -lgcov --coverage)
+
+      add_custom_target(coverage_clear_unix
+        COMMAND find . -name "*.gcda" | xargs rm || true # FIXME: Make this platform-neutral
+        COMMAND ${CMAKE_COMMAND} -E remove ${CMAKE_CURRENT_BINARY_DIR}/coverage.info
+        COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_CURRENT_BINARY_DIR}/coverage)
+
+      add_custom_target(coverage_unix
+        COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target coverage_clear_unix
+        COMMAND ${CMAKE_CTEST_COMMAND}
+        COMMAND lcov --capture --directory ${CMAKE_CURRENT_BINARY_DIR} --exclude '/usr/*' --exclude '*/tests/*' --exclude '*/external/*' --output-file ${CMAKE_CURRENT_BINARY_DIR}/coverage.info
+        COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/coverage
+        COMMAND genhtml ${CMAKE_CURRENT_BINARY_DIR}/coverage.info -o ${CMAKE_CURRENT_BINARY_DIR}/coverage -t "${SUPERTUX_VERSION_STRING}")
+    else()
+      message(WARNING "Coverage for non-GNU compilers has yet to be implemented")
+    endif()
+  else()
+    message(WARNING "Building tests in a non-Debug build will NOT make files for coverage! Change CMAKE_BUILD_TYPE to Debug to prepare for coverage analysis.")
+  endif()
+endif()
+
+# EOF #

mk/cmake/SuperTux/BuildTests.cmake

@@ -0,0 +1,61 @@
+if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
+  ## Find revision of WC
+  mark_as_advanced(GIT_EXECUTABLE)
+  find_program(GIT_EXECUTABLE git)
+  if(NOT GIT_EXECUTABLE EQUAL "GIT_EXECUTABLE-NOTFOUND")
+    include(GetGitRevisionDescription)
+    git_describe(VERSION_STRING_GIT "--tags" "--match" "?[0-9]*.[0-9]*.[0-9]*")
+    string(REPLACE "v" "" VERSION_LIST ${VERSION_STRING_GIT})
+    string(REGEX REPLACE "[^\\-]+\\-([0-9]+)\\-.*" "\\1" VERSION_NUMBER_GIT "${VERSION_LIST}")
+    string(REGEX REPLACE "(-|_|\\.)" ";" VERSION_LIST ";${VERSION_LIST}")
+  endif()
+endif()
+
+get_filename_component(BASEDIR ${CMAKE_SOURCE_DIR} NAME)
+if("${VERSION_LIST}" STREQUAL "")
+  if(${BASEDIR} MATCHES "supertux2-[0-9\\.]*")
+    string(REGEX REPLACE "(\\.|_|-)" ";" VERSION_LIST ${BASEDIR})
+  endif()
+endif()
+
+file(GLOB ORIG_TGZ ../*.orig.tar.gz)
+if("${VERSION_LIST}" STREQUAL "" AND (NOT "${ORIG_TGZ}" STREQUAL ""))
+  get_filename_component(BASEDIR ${ORIG_TGZ} NAME)
+  string(REGEX REPLACE "(\\.|_|-)" ";" VERSION_LIST ${BASEDIR})
+endif()
+
+list(LENGTH VERSION_LIST VERSION_LIST_SIZE)
+
+if(${VERSION_LIST_SIZE} GREATER 0)
+  list(GET VERSION_LIST 1 MAJOR_VERSION_GIT)
+  list(GET VERSION_LIST 2 MINOR_VERSION_GIT)
+  list(GET VERSION_LIST 3 PATCH_VERSION_GIT)
+
+  if("${VERSION_STRING_GIT}" STREQUAL "")
+    set(VERSION_STRING_GIT "${MAJOR_VERSION_GIT}.${MINOR_VERSION_GIT}.${PATCH_VERSION_GIT}")
+  endif()
+
+  configure_file("${CMAKE_SOURCE_DIR}/version.cmake.in" "${CMAKE_SOURCE_DIR}/version.cmake")
+endif()
+if(NOT EXISTS "${CMAKE_SOURCE_DIR}/version.cmake")
+  message( SEND_ERROR "Could not find GIT or valid version.cmake. Version information will be invalid." )
+endif()
+include("${CMAKE_SOURCE_DIR}/version.cmake")
+
+if(FORCE_VERSION_STRING)
+  set(SUPERTUX_VERSION_STRING "${FORCE_VERSION_STRING}")
+endif()
+set(SUPERTUX_VERSION ${SUPERTUX_VERSION_STRING})
+
+configure_file(version.h.in ${CMAKE_BINARY_DIR}/version.h )
+
+set_source_files_properties(${CMAKE_BINARY_DIR}/version.h
+  PROPERTIES GENERATED true)
+set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/src/supertux/main.cpp
+  PROPERTIES OBJECT_DEPENDS "${CMAKE_BINARY_DIR}/version.h")
+set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/src/supertux/title_screen.cpp
+  PROPERTIES OBJECT_DEPENDS "${CMAKE_BINARY_DIR}/version.h")
+set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/src/addon/addon_manager.cpp
+  PROPERTIES OBJECT_DEPENDS "${CMAKE_BINARY_DIR}/version.h")
+
+# EOF #