supertux/CMakeLists.txt

#
# SuperTux - root build script
# Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#


#
# INSTRUCTIONS:
# -------------
#
# Create a directory build/ and change to it. Run
#
#   cmake ..
#
# This creates a set of Makefiles to build the project. Run
#
#   make
#


## Project name to use as command prefix.

project(SUPERTUX)


### CMake configuration

cmake_minimum_required(VERSION 3.1)
if(COMMAND cmake_policy)
  cmake_policy(SET CMP0003 NEW)
  cmake_policy(SET CMP0008 NEW)
  cmake_policy(SET CMP0023 NEW)
endif(COMMAND cmake_policy)

set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/mk/cmake)
include(ConfigureFiles)
include(ExternalProject)
include(CheckCXXCompilerFlag)

## For autopackage
set(APPDATADIR "${CMAKE_INSTALL_PREFIX}/share/games/supertux2")

set(BUILD_DATA_DIR "${CMAKE_CURRENT_SOURCE_DIR}/data")
set(BUILD_CONFIG_DATA_DIR "${CMAKE_BINARY_DIR}/data")
## Check endianess

include(TestBigEndian)
test_big_endian(WORDS_BIGENDIAN)

## Add definitions
if(CMAKE_BUILD_TYPE MATCHES "Release|RelWithDebInfo")
  add_definitions(-DRELEASE)
elseif(CMAKE_BUILD_TYPE MATCHES Debug)
  add_definitions(-DDEBUG)
endif()

set(SUPERTUX_SYSTEM_NAME ${CMAKE_SYSTEM_NAME})
set(VCPKG_BUILD OFF CACHE BOOL "Use dependencies installed via vcpkg (not dependency package)")
set(VCPKG_APPLOCAL_DEPS ${VCPKG_BUILD} BOOL)
## These variables enable MSVC to find libraries located in "dependencies{32|64}"
if(WIN32)
  if(NOT VCPKG_BUILD)
    ## Store path of dependecy folder
    set(DEPENDENCY_FOLDER "${PROJECT_SOURCE_DIR}/dependencies")
  endif()

  ## To test if the host (not the build) is x64:
  ## "$ENV{PROCESSOR_ARCHITEW6432}" STREQUAL "AMD64"
  if(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
    set(WIN64 ON)
    if(NOT VCPKG_BUILD)
      set(DEPENDENCY_FOLDER "${DEPENDENCY_FOLDER}64")
    endif()
  else(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
    set(WIN64 OFF)
    if(NOT VCPKG_BUILD)
      set(DEPENDENCY_FOLDER "${DEPENDENCY_FOLDER}32")
    endif()
  endif(${CMAKE_SIZEOF_VOID_P} EQUAL 8)

  if(WIN64)
    set(SUPERTUX_SYSTEM_NAME win64)
  else(WIN64)
    set(SUPERTUX_SYSTEM_NAME win32)
  endif(WIN64)

  if(NOT VCPKG_BUILD)
    set(ENV{PATH} "$ENV{PATH};${DEPENDENCY_FOLDER}/include")
    set(ENV{LIB} "${DEPENDENCY_FOLDER}/lib")
    set(ENV{OPENALDIR} "${DEPENDENCY_FOLDER}")
  endif()

  ## Enable multi-processor compilation (faster)
  if(MSVC)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
  endif(MSVC)

  ## And shut up about unsafe stuff
  add_definitions(-D_CRT_SECURE_NO_WARNINGS)
  ## Add an icon
  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/mk/msvc/icon_rc.template" "${PROJECT_BINARY_DIR}/tmp/icon.rc")

  ## Find all used libraries
  if(NOT VCPKG_BUILD)
    file(GLOB DLLS "${DEPENDENCY_FOLDER}/dll/*")
  endif()
endif(WIN32)

## Add lots of dependencies to compiler switches

set(Boost_ADDITIONAL_VERSIONS "1.41" "1.41.0")
if(WIN32)
  option(ENABLE_BOOST_STATIC_LIBS "Use boost static libraries" ON)
else(WIN32)
  option(ENABLE_BOOST_STATIC_LIBS "Use boost static libraries" OFF)
endif(WIN32)
if(ENABLE_BOOST_STATIC_LIBS)
  set(Boost_USE_STATIC_LIBS TRUE)
else(ENABLE_BOOST_STATIC_LIBS)
  set(Boost_USE_STATIC_LIBS FALSE)
endif(ENABLE_BOOST_STATIC_LIBS)
find_package(Boost REQUIRED COMPONENTS filesystem system date_time locale)
include_directories(SYSTEM ${Boost_INCLUDE_DIR})
link_directories(${Boost_LIBRARY_DIRS})

find_package(PNG REQUIRED)

if(WIN32)
  if(VCPKG_BUILD)
    find_package(SDL2 CONFIG REQUIRED)
    find_path(SDL2_INCLUDE_DIRS SDL2/SDL.h)
    find_path(SDL2IMAGE_INCLUDE_DIRS SDL2/SDL_image.h)
    set(SDL2_INCLUDE_DIRS ${SDL2_INCLUDE_DIRS}/SDL2)
    set(SDL2IMAGE_INCLUDE_DIRS ${SDL2IMAGE_INCLUDE_DIRS}/SDL2)
    find_library(SDL2_LIBRARIES SDL2)
    find_library(SDL2IMAGE_LIBRARIES SDL2_image)
    find_library(SDL2MAIN_LIBRARIES SDL2main)
    message(STATUS "SDL2_INCLUDE_DIR is ${SDL2_INCLUDE_DIRS}")
  else(VCPKG_BUILD)
    find_path(SDL2_INCLUDE_DIRS NAMES SDL.h PATHS "${DEPENDENCY_FOLDER}/include/SDL2")
    find_path(SDL2IMAGE_INCLUDE_DIRS NAMES SDL_image.h PATHS "${DEPENDENCY_FOLDER}/include/SDL2_image")
    find_library(SDL2_LIBRARIES NAMES SDL2 PATHS "${DEPENDENCY_FOLDER}/lib")
    find_library(SDL2IMAGE_LIBRARIES NAMES SDL2_image PATHS "${DEPENDENCY_FOLDER}/lib")
    find_library(SDL2MAIN_LIBRARIES NAMES SDL2main PATHS "${DEPENDENCY_FOLDER}/lib")
    find_path(PHYSFS_INCLUDE_DIR NAMES physfs.h PATHS "${DEPENDENCY_FOLDER}/include/physfs")
  endif(VCPKG_BUILD)

else(WIN32)
  include(FindPkgConfig)
  pkg_search_module(SDL2 REQUIRED sdl2>=2.0.1)
  pkg_search_module(SDL2IMAGE REQUIRED SDL2_image>=2.0.0)
endif(WIN32)
set(HAVE_SDL TRUE)

option(IS_SUPERTUX_RELEASE "Build as official SuperTux release" OFF)
option(BUILD_TESTS "Build test cases" OFF)
option(ENABLE_OPENGL "Enable OpenGL support" ON)
option(ENABLE_OPENGLES2 "Enable OpenGLES2 support" OFF)
option(GLBINDING_ENABLED "Use glbinding instead of GLEW" OFF)
option(GLBINDING_DEBUG_OUTPUT "Enable glbinding debug output for each called OpenGL function" OFF)

if(ENABLE_OPENGL)
  if(ENABLE_OPENGLES2)
    pkg_check_modules(GLESV2 REQUIRED glesv2)
    set(HAVE_OPENGL TRUE)
    set(OPENGL_INCLUDE_DIR  ${GLESV2_INCLUDE_DIRS})
    set(OPENGL_LIBRARY ${GLESV2_LIBRARIES})
    add_definitions(-DUSE_OPENGLES2)
  else()
    set(OpenGL_GL_PREFERENCE "LEGACY")
    find_package(OpenGL)
    if(OPENGL_FOUND)
      include_directories(SYSTEM ${OPENGL_INCLUDE_DIR})
      set(HAVE_OPENGL TRUE)
    endif(OPENGL_FOUND)

    if(GLBINDING_ENABLED)
      find_package(GLBINDING REQUIRED)
      if(GLBINDING_FOUND)
        include_directories(SYSTEM ${GLBINDING_INCLUDES})
        add_definitions(-DUSE_GLBINDING)
        IF (GLBINDING_DEBUG_OUTPUT)
          add_definitions(-DUSE_GLBINDING_DEBUG_OUTPUT)
        endif()
      endif()
    else()
      find_package(GLEW REQUIRED)
      if(GLEW_FOUND)
        include_directories(SYSTEM ${GLEW_INCLUDE_DIR})
      endif(GLEW_FOUND)
    endif()
  endif()
endif(ENABLE_OPENGL)

if(VCPKG_BUILD)
  find_package(OpenAL CONFIG REQUIRED)
else()
  find_package(OpenAL REQUIRED)
endif()
include_directories(SYSTEM ${OPENAL_INCLUDE_DIR})

find_package(OggVorbis REQUIRED)
include_directories(SYSTEM ${VORBIS_INCLUDE_DIR})

include(CheckSymbolExists)

find_package(PhysFS)
if(PHYSFS_LIBRARY)
  set(CMAKE_REQUIRED_LIBRARIES ${PHYSFS_LIBRARY})
  check_symbol_exists("PHYSFS_getPrefDir" "${PHYSFS_INCLUDE_DIR}/physfs.h" HAVE_PHYSFS_GETPREFDIR)
endif()
if(HAVE_PHYSFS_GETPREFDIR)
  set(USE_SYSTEM_PHYSFS ON CACHE BOOL "Use preinstalled physfs (must support getPrefDir)")
else(HAVE_PHYSFS_GETPREFDIR)
  set(USE_SYSTEM_PHYSFS OFF CACHE BOOL "Use preinstalled physfs (must support getPrefDir)")
endif(HAVE_PHYSFS_GETPREFDIR)

if(NOT USE_SYSTEM_PHYSFS)
  if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/external/physfs/CMakeLists.txt)
    message(FATAL_ERROR "physfs submodule is not checked out or ${CMAKE_CURRENT_SOURCE_DIR}/external/physfs/CMakeLists.txt is missing")
  endif()

  if(WIN32)
    set(PHYSFS_BUILD_SHARED TRUE)
    set(PHYSFS_BUILD_STATIC FALSE)
  else(WIN32)
    set(PHYSFS_BUILD_SHARED FALSE)
    set(PHYSFS_BUILD_STATIC TRUE)
  endif()

  set(PHYSFS_PREFIX ${CMAKE_BINARY_DIR}/physfs/)
  ExternalProject_Add(physfs
    SOURCE_DIR "${CMAKE_SOURCE_DIR}/external/physfs/"
    BUILD_BYPRODUCTS
    "${PHYSFS_PREFIX}/bin/${CMAKE_SHARED_LIBRARY_PREFIX}physfs${CMAKE_SHARED_LIBRARY_SUFFIX}"
    "${PHYSFS_PREFIX}/lib${LIB_SUFFIX}/physfs${CMAKE_LINK_LIBRARY_SUFFIX}"
    "${PHYSFS_PREFIX}/lib${LIB_SUFFIX}/${CMAKE_STATIC_LIBRARY_PREFIX}physfs${CMAKE_STATIC_LIBRARY_SUFFIX}"
    CMAKE_ARGS
    -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
    -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
    -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
    -DCMAKE_INSTALL_PREFIX=${PHYSFS_PREFIX}
    -DLIB_SUFFIX=${LIB_SUFFIX}
    -DPHYSFS_BUILD_SHARED=${PHYSFS_BUILD_SHARED}
    -DPHYSFS_BUILD_STATIC=${PHYSFS_BUILD_STATIC}
    -DPHYSFS_BUILD_TEST=FALSE)

  if(WIN32)
    add_library(physfs_lib SHARED IMPORTED)
    set_target_properties(physfs_lib PROPERTIES IMPORTED_LOCATION "${PHYSFS_PREFIX}/bin/${CMAKE_SHARED_LIBRARY_PREFIX}physfs${CMAKE_SHARED_LIBRARY_SUFFIX}")
    set_target_properties(physfs_lib PROPERTIES IMPORTED_IMPLIB "${PHYSFS_PREFIX}/lib${LIB_SUFFIX}/physfs${CMAKE_LINK_LIBRARY_SUFFIX}")
  else()
    add_library(physfs_lib STATIC IMPORTED)
    set_target_properties(physfs_lib PROPERTIES IMPORTED_LOCATION "${PHYSFS_PREFIX}/lib${LIB_SUFFIX}/${CMAKE_STATIC_LIBRARY_PREFIX}physfs${CMAKE_STATIC_LIBRARY_SUFFIX}")
  endif()
  set(PHYSFS_INCLUDE_DIR "${PHYSFS_PREFIX}/include/")
endif()

include_directories(BEFORE SYSTEM ${PHYSFS_INCLUDE_DIR})


## The curl headers are in the standard include path in dependencies
## so it's not required to add them here
find_package(CURL REQUIRED)
if(WIN32 AND VCPKG_BUILD)
  list(LENGTH CURL_LIBRARY CURL_LIBRARY_LENGTH)
  if (CURL_LIBRARY_LENGTH EQUAL 1)
    set(CURL_LIBRARY_DEBUG_LIB   ${CURL_LIBRARY})
      set(CURL_LIBRARY_RELEASE_LIB ${CURL_LIBRARY_DEBUG_LIB}/../../../lib/libcurl.lib)
      get_filename_component(CURL_LIBRARY_RELEASE_LIB ${CURL_LIBRARY_RELEASE_LIB} REALPATH)
      unset(CURL_LIBRARY CACHE)
      unset(CURL_LIBRARY)
      unset(CURL_LIBRARIES  CACHE)
      unset(CURL_LIBRARIES)
      set(CURL_LIBRARY "debug;${CURL_LIBRARY_DEBUG_LIB};optimized;${CURL_LIBRARY_RELEASE_LIB}")
      set(CURL_LIBRARIES ${CURL_LIBRARY})
  endif()
endif()
if(CURL_FOUND)
  include_directories(SYSTEM ${CURL_INCLUDE_DIR})
  set(HAVE_LIBCURL TRUE)
endif(CURL_FOUND)

#find_package(ICONV REQUIRED)
#include_directories(SYSTEM ${ICONV_INCLUDE_DIR})
#link_libraries(${ICONV_LIBRARY})

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 ${VERSION_STRING_GIT})
    string(REGEX REPLACE "(-|_|\\.)" ";" VERSION_LIST ";${VERSION_LIST}")
  endif()
endif(EXISTS "${CMAKE_SOURCE_DIR}/.git")

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 "${CMAKE_SOURCE_DIR}/version.cmake")
  message( SEND_ERROR "Cound not find GIT or valid version.cmake. Version information will be invalid." )
endif(NOT EXISTS "${CMAKE_SOURCE_DIR}/version.cmake")
include("${CMAKE_SOURCE_DIR}/version.cmake")


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")

## Configure doxygen
# Adapted from https://tty1.net/blog/2014/cmake-doxygen_en.html
# add a target to generate API documentation with Doxygen
find_package(Doxygen)
option(BUILD_DOCUMENTATION "Build API documentation using Doxygen" ${DOXYGEN_FOUND})

if(BUILD_DOCUMENTATION)
  if(NOT DOXYGEN_FOUND)
    message(FATAL_ERROR "Doxygen is needed to build the documentation.")
  endif()

  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()

## Check platform-dependent build options

include(ConfigureChecks)

# Include altivec wrapper on ppc
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc.*")
  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src/ppc)
endif()


## Also build external/squirrel

if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/external/squirrel/CMakeLists.txt)
  message(FATAL_ERROR "squirrel submodule is not checked out or ${CMAKE_CURRENT_SOURCE_DIR}/external/squirrel/CMakeLists.txt is missing")
endif()

set(SQUIRREL_PREFIX ${CMAKE_BINARY_DIR}/squirrel/ex)
ExternalProject_Add(squirrel
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/external/squirrel/"
  BUILD_BYPRODUCTS
  "${SQUIRREL_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}sqstdlib_static${CMAKE_STATIC_LIBRARY_SUFFIX}"
  "${SQUIRREL_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}squirrel_static${CMAKE_STATIC_LIBRARY_SUFFIX}"
  CMAKE_ARGS
  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
  -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
  -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
  -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
  -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
  -DCMAKE_INSTALL_PREFIX=${SQUIRREL_PREFIX}
  -DINSTALL_INC_DIR=include
  -DCMAKE_POSITION_INDEPENDENT_CODE=ON)

if(WIN32)
  add_library(squirrel_lib SHARED IMPORTED)
  set_target_properties(squirrel_lib PROPERTIES IMPORTED_LOCATION "${SQUIRREL_PREFIX}/bin/${CMAKE_SHARED_LIBRARY_PREFIX}squirrel${CMAKE_SHARED_LIBRARY_SUFFIX}")
  set_target_properties(squirrel_lib PROPERTIES IMPORTED_IMPLIB "${SQUIRREL_PREFIX}/lib/squirrel${CMAKE_LINK_LIBRARY_SUFFIX}")
  add_library(sqstdlib_lib SHARED IMPORTED)
  set_target_properties(sqstdlib_lib PROPERTIES IMPORTED_LOCATION "${SQUIRREL_PREFIX}/bin/${CMAKE_SHARED_LIBRARY_PREFIX}sqstdlib${CMAKE_SHARED_LIBRARY_SUFFIX}")
  set_target_properties(sqstdlib_lib PROPERTIES IMPORTED_IMPLIB "${SQUIRREL_PREFIX}/lib/sqstdlib${CMAKE_LINK_LIBRARY_SUFFIX}")

  #For debug run purposes
  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/mk/msvc/run_supertux.bat.in" "${PROJECT_BINARY_DIR}/run_supertux.bat")
else()
  add_library(squirrel_lib STATIC IMPORTED)
  set_target_properties(squirrel_lib PROPERTIES IMPORTED_LOCATION "${SQUIRREL_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}squirrel_static${CMAKE_STATIC_LIBRARY_SUFFIX}")
  add_library(sqstdlib_lib STATIC IMPORTED)
  set_target_properties(sqstdlib_lib PROPERTIES IMPORTED_LOCATION "${SQUIRREL_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}sqstdlib_static${CMAKE_STATIC_LIBRARY_SUFFIX}")
endif()

include_directories(SYSTEM ${SQUIRREL_PREFIX}/include)

## Also build external/tinygettext

if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/external/tinygettext/CMakeLists.txt)
  message(FATAL_ERROR "tinygettext submodule is not checked out or ${CMAKE_CURRENT_SOURCE_DIR}/external/tinygettext/CMakeLists.txt is missing")
endif()

# Include altivec wrapper on ppc
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc.*")
  set(TINYGETTEXT_CXX_FLAGS "-isystem ${CMAKE_CURRENT_SOURCE_DIR}/src/ppc ${CMAKE_CXX_FLAGS}")
else()
  set(TINYGETTEXT_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()

set(TINYGETTEXT_PREFIX ${CMAKE_BINARY_DIR}/tinygettext/)
ExternalProject_Add(tinygettext
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/external/tinygettext/"
  BUILD_BYPRODUCTS "${TINYGETTEXT_PREFIX}/lib${LIB_SUFFIX}/${CMAKE_STATIC_LIBRARY_PREFIX}tinygettext${CMAKE_STATIC_LIBRARY_SUFFIX}"
  CMAKE_ARGS
  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
  -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
  -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
  -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
  -DCMAKE_CXX_FLAGS=${TINYGETTEXT_CXX_FLAGS}
  -DBUILD_SHARED_LIBS=OFF
  -DHAVE_SDL=ON
  -DVCPKG_BUILD=${VCPKG_BUILD}
  -DCMAKE_INSTALL_PREFIX=${TINYGETTEXT_PREFIX}
  -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
  -DSDL2_LIBRARIES=${SDL2_LIBRARIES}
  -DSDL2_INCLUDE_DIRS=${SDL2_INCLUDE_DIRS}
  -DLIB_SUFFIX=${LIB_SUFFIX})

add_library(tinygettext_lib STATIC IMPORTED)
set_target_properties(tinygettext_lib PROPERTIES IMPORTED_LOCATION "${TINYGETTEXT_PREFIX}/lib${LIB_SUFFIX}/${CMAKE_STATIC_LIBRARY_PREFIX}tinygettext${CMAKE_STATIC_LIBRARY_SUFFIX}")

include_directories(SYSTEM ${TINYGETTEXT_PREFIX}/include)


## external/SDL_ttf with patches
find_package(Freetype REQUIRED)
find_package(RAQM)
set(SDL_TTF_PREFIX ${CMAKE_BINARY_DIR}/SDL_ttf/)
ExternalProject_Add(SDL_ttf
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/external/SDL_ttf/"
  BUILD_BYPRODUCTS "${SDL_TTF_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}SDL2_ttf${CMAKE_STATIC_LIBRARY_SUFFIX}"
  CMAKE_ARGS
  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
  -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
  -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
  -DCMAKE_INSTALL_PREFIX=${SDL_TTF_PREFIX}
  -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
  -DWITH_RAQM=${RAQM_FOUND}
  -DRAQM_LIBRARIES=${RAQM_LIBRARY}
  -DRAQM_INCLUDE_DIR=${RAQM_INCLUDE_DIR}
  -DBUILD_SHARED_LIBS=OFF)
add_library(SDL_ttf_lib STATIC IMPORTED)
set_target_properties(SDL_ttf_lib PROPERTIES IMPORTED_LOCATION "${SDL_TTF_PREFIX}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}SDL2_ttf${CMAKE_STATIC_LIBRARY_SUFFIX}")
link_directories(${SDL_TTF_PREFIX}/lib)
include_directories(SYSTEM ${SDL_TTF_PREFIX}/include/SDL2)
if(RAQM_FOUND)
  find_package(Fribidi REQUIRED)
  find_package(Harfbuzz REQUIRED)
  set_target_properties(SDL_ttf_lib PROPERTIES INTERFACE_LINK_LIBRARIES "${RAQM_LIBRARIES}")
endif()

## Some additional include paths

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/)
include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/external/SDL_SavePNG/)

# Discord SDK
# Before removing messages, please check with the community if no one minds that the Discord SDK gets bundled with ST.
# Some privay-concerned users or free software package managers might need an option to compile ST without the Discord integration.
option(ENABLE_DISCORD "Compile the Discord integration" ON)
if(ENABLE_DISCORD)
  message(STATUS "Discord WILL be compiled. To disable Discord, pass -DENABLE_DISCORD=Off")
  include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/external/discord-sdk/include)
  set(BUILD_EXAMPLES OFF)
  add_subdirectory(external/discord-sdk)
else(ENABLE_DISCORD)
  message(STATUS "WARNING : Discord is NOT to be compiled. To enable Discord, pass -DENABLE_DISCORD=On")
endif(ENABLE_DISCORD)

if(WIN32)
  add_definitions(-D_USE_MATH_DEFINES -DNOMINMAX)
  add_definitions(-DWIN32)
endif(WIN32)

## Lint

if(CMAKE_VERSION VERSION_GREATER 3.6)
  if (USE_CLANG_TIDY)
    find_program(
      CLANG_TIDY_EXE
      NAMES "clang-tidy"
      DOC "Path to clang-tidy executable"
      )

    if(NOT CLANG_TIDY_EXE)
      message(FATAL_ERROR "clang-tidy not found.")
    else()
      message(STATUS "clang-tidy found: ${CLANG_TIDY_EXE}")
      set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_EXE}")
    endif()
  endif()
endif()

## 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_CXX RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} src/*/*.cpp src/supertux/menu/*.cpp src/video/sdl/*.cpp src/video/null/*.cpp)
file(GLOB SUPERTUX_RESOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${PROJECT_BINARY_DIR}/tmp/*.rc")

if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/external/sexp-cpp/CMakeLists.txt)
  message(FATAL_ERROR "sexp-cpp submodule is not checked out or ${CMAKE_CURRENT_SOURCE_DIR}/external/sexp-cpp/CMakeLists.txt is missing")
endif()
file(GLOB SEXP_SOURCES_CXX RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} external/sexp-cpp/src/*.cpp)
add_library(sexp STATIC ${SEXP_SOURCES_CXX})
target_compile_definitions(sexp PRIVATE -DSEXP_USE_LOCALE)

file(GLOB SAVEPNG_SOURCES_CXX RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} external/SDL_SavePNG/savepng.c)
add_library(savepng STATIC ${SAVEPNG_SOURCES_CXX})
target_include_directories(savepng SYSTEM PUBLIC ${SDL2_INCLUDE_DIRS} ${PNG_INCLUDE_DIRS})
target_link_libraries(savepng PUBLIC ${PNG_LIBRARIES})

if(HAVE_OPENGL)
  file(GLOB SUPERTUX_OPENGL_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} src/video/gl/*.cpp)
  set(SUPERTUX_SOURCES_CXX ${SUPERTUX_SOURCES_CXX} ${SUPERTUX_OPENGL_SOURCES})
endif(HAVE_OPENGL)

## Sort source lists to have deterministic linking order
list(SORT SUPERTUX_SOURCES_C)
list(SORT SUPERTUX_SOURCES_CXX)
list(SORT SUPERTUX_RESOURCES)

if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.cpp)
  set(SUPERTUX_SOURCES_CXX ${SUPERTUX_SOURCES_CXX} ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.cpp)
endif(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/src/scripting/wrapper.cpp)

## Compile everything at once (roughly equivalent to cat *.cpp | gcc)

option(COMPILE_AMALGATION "Compile all the files together at once (experimental)" OFF)
if(COMPILE_AMALGATION)
  file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp "// Includes all source files of the project\n")
  foreach(ST_FILE ${SUPERTUX_SOURCES_CXX})
    file(RELATIVE_PATH CXX_FILE ${CMAKE_CURRENT_SOURCE_DIR}/src "${CMAKE_CURRENT_SOURCE_DIR}/${ST_FILE}")
    file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp "#include \"${CXX_FILE}\"\n")
  endforeach(ST_FILE)
  ## Build instead of CXX sources
  set(SUPERTUX_SOURCES_CXX ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp)
else(COMPILE_AMALGATION)
  if(EXISTS ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp)
    file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp)
  endif(EXISTS ${CMAKE_CURRENT_BINARY_DIR}/amalgation.cpp)
endif(COMPILE_AMALGATION)

## Debug options

option(WERROR "Stop on first compiler warning" OFF)
option(WARNINGS "Enable long list of warnings for compiler to check" OFF)
option(USE_CLANG_TIDY "Run clang-tidy" OFF)

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g" CACHE STRING "Debug flags")
  set(CMAKE_C_FLAGS_DEBUG "-O0 -g" CACHE STRING "Debug flags")
  set(CMAKE_CXX_FLAGS_PROFILE "-pg" CACHE STRING "Profile flags")
  set(CMAKE_C_FLAGS_PROFILE "-pg" CACHE STRING "Profile flags")
  set(CMAKE_LD_FLAGS_PROFILE "-lgmon" CACHE STRING "Profile flags")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter -funit-at-a-time")
  if(WERROR)
    add_definitions(-Werror)
  else(WERROR)
    remove_definitions(-Werror)
  endif(WERROR)
  if(WARNINGS)
    # temporarily disabled:
    #   -Wsign-conversion -Wfloat-equal -Wundef -Wswitch-default
    #   -Wswitch-enum -Wsign-promo -Wcast-qual -Woverloaded-virtual -Wmissing-format-attribute
    #   -Wpadded -Wabi -Winline -Wunsafe-loop-optimizations -Wstrict-overflow=5
    # fails on MinGW:
    #   -ansi
    if(CMAKE_COMPILER_IS_GNUCXX)
      string(CONCAT SUPERTUX2_EXTRA_WARNING_FLAGS
        "-fdiagnostics-show-option "
        "-pedantic "
        "-Wno-long-long "
        "-Wcast-align "
        "-Wdisabled-optimization "
        "-Winit-self -Winvalid-pch "
        "-Wmissing-include-dirs "
        "-Wmissing-noreturn "
        "-Wpacked -Wredundant-decls "
        "-Wformat=2 "
        "-Weffc++ "
        "-Wctor-dtor-privacy "
        "-Wno-unused-parameter "
        "-Wshadow "
        "-Wnon-virtual-dtor "
        "-Wcast-qual "
        "-Wold-style-cast "
        "-Wzero-as-null-pointer-constant "
        "-Wconversion "
        "-Wlogical-op "
        "-Wstrict-null-sentinel "
        "-Wsuggest-override "
        )
      if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8)
        string(CONCAT SUPERTUX2_EXTRA_WARNING_FLAGS
          "${SUPERTUX2_EXTRA_WARNING_FLAGS} "
          "-Wint-in-bool-context "
          )
      endif()
      if(Boost_VERSION LESS 106500)
        string(CONCAT SUPERTUX2_EXTRA_WARNING_FLAGS
          "${SUPERTUX2_EXTRA_WARNING_FLAGS} "
          "-Wno-implicit-fallthrough ")
      endif()
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
      string(CONCAT SUPERTUX2_EXTRA_WARNING_FLAGS
        "${SUPERTUX2_EXTRA_WARNING_FLAGS} "
        "-Weverything "

        # flags that we deliberately ignore
        "-Wno-c++98-compat "
        "-Wno-c++98-compat-pedantic "
        "-Wno-float-equal "
        "-Wno-padded "
        "-Wno-weak-vtables "
        "-Wno-disabled-macro-expansion "
        "-Wno-documentation "
        "-Wno-reserved-id-macro "
        "-Wno-sign-conversion "

        # warnings that should probably be fixed in code
        "-Wno-documentation-unknown-command "
        "-Wno-inconsistent-missing-destructor-override "
        "-Wno-deprecated-dynamic-exception-spec "
        "-Wno-deprecated "
        "-Wno-switch-enum "
        "-Wno-covered-switch-default "
        "-Wno-exit-time-destructors "
        "-Wno-global-constructors "
        "-Wno-duplicate-enum "
        "-Wno-unreachable-code "
      )

      # This snipped adapted from AOMediaCodec cmakefile
      # The detection of cross compilation by -Wpoison-system-directories has false positives on macOS because
      # --sysroot is implicitly added. Turn the warning off.
      if(NOT DEFINED HAVE_POISON_SYSTEM_DIRECTORIES_WARNING)
          check_cxx_compiler_flag(-Wpoison-system-directories HAVE_POISON_SYSTEM_DIRECTORIES_WARNING)
      endif()
      if(HAVE_POISON_SYSTEM_DIRECTORIES_WARNING)
        string(CONCAT SUPERTUX2_EXTRA_WARNING_FLAGS
          "${SUPERTUX2_EXTRA_WARNING_FLAGS} "
          "-Wno-poison-system-directories ")
      endif()
    endif()
  endif(WARNINGS)
endif()

## If xgettext is available, generate messages.pot for sources

option(GENERATE_MESSAGESPOT "Generate messages.pot files" OFF)
if(GENERATE_MESSAGESPOT)
  mark_as_advanced(
    XGETTEXT_EXECUTABLE
    )
  find_program(XGETTEXT_EXECUTABLE xgettext)
  if(NOT XGETTEXT_EXECUTABLE)
    message(STATUS "Warning: xgettext not found - will not update messages.pot")
  else(NOT XGETTEXT_EXECUTABLE)
    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(SUPERTUX_LEVELS)

    endforeach(SUPERTUX_LEVEL_DIR)

    add_custom_target(
      supertux2-messages ALL
      DEPENDS ${MESSAGES_POT_FILES}
      )

  endif(NOT XGETTEXT_EXECUTABLE)
endif(GENERATE_MESSAGESPOT)

## Some additional compiler switches
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
  add_definitions(-DMACOSX)
endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")


## On Windows, add an icon

if(WIN32)
  #  set(SUPERTUX_SOURCES_C ${SUPERTUX_SOURCES_C} ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.rc)
  if(MINGW)
    add_custom_command(
      OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/supertux_rc.o
      COMMAND ${CMAKE_RC_COMPILER} -I${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons -i${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.rc -o ${CMAKE_CURRENT_BINARY_DIR}/supertux_rc.o)
    set(SUPERTUX_SOURCES_C ${SUPERTUX_SOURCES_C} ${CMAKE_CURRENT_BINARY_DIR}/supertux_rc.o)
  endif(MINGW)
endif(WIN32)

## Build miniswig and generate miniswig wrapper

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(GENERATE_WRAPPER)

## Generate supertux executable in the right place

#set(EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_SOURCE_DIR})
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})

## Add target for supertux binary

add_library(supertux2_c OBJECT ${SUPERTUX_SOURCES_C})
add_library(supertux2_lib STATIC ${CMAKE_BINARY_DIR}/version.h ${SUPERTUX_SOURCES_CXX} ${SUPERTUX_RESOURCES} $<TARGET_OBJECTS:supertux2_c>)
if(WIN32)
  add_executable(supertux2 WIN32 src/main.cpp ${CMAKE_CURRENT_SOURCE_DIR}/data/images/engine/icons/supertux.rc)
  target_link_libraries(supertux2 ${SDL2MAIN_LIBRARIES})
else()
  add_executable(supertux2 src/main.cpp)
endif(WIN32)
target_link_libraries(supertux2 supertux2_lib Boost::filesystem Boost::locale)
set_target_properties(supertux2_lib PROPERTIES OUTPUT_NAME supertux2_lib)
set_target_properties(supertux2_lib PROPERTIES COMPILE_FLAGS "${SUPERTUX2_EXTRA_WARNING_FLAGS}")

if(WIN32 AND NOT VCPKG_BUILD)
  ## Copy dlls on windows
  add_custom_command(TARGET supertux2_lib POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
    "${DEPENDENCY_FOLDER}/dll"
    $<TARGET_FILE_DIR:supertux2_lib>)
endif(WIN32 AND NOT VCPKG_BUILD)

## Link supertux binary with squirrel and other libraries

add_dependencies(supertux2_lib tinygettext)
add_dependencies(supertux2_lib squirrel)
add_dependencies(supertux2_lib SDL_ttf)

if(VCPKG_BUILD)
  target_include_directories(supertux2_lib PUBLIC ${CURL_INCLUDE_DIRS})
endif()

target_include_directories(supertux2_lib SYSTEM PUBLIC ${SDL2_INCLUDE_DIRS})
target_include_directories(supertux2_lib SYSTEM PUBLIC ${SDL2IMAGE_INCLUDE_DIRS})
target_include_directories(supertux2_lib SYSTEM PUBLIC ${SDL_TTF_PREFIX}/include/SDL2)
if(VCPKG_BUILD)
  target_link_libraries(supertux2_lib PRIVATE SDL2::SDL2main SDL2::SDL2 SDL2_image)
else()
  target_link_libraries(supertux2_lib PUBLIC ${SDL2_LIBRARIES})
  target_link_libraries(supertux2_lib PUBLIC ${SDL2IMAGE_LIBRARIES})
endif()
target_link_libraries(supertux2_lib PUBLIC SDL_ttf_lib)
target_link_libraries(supertux2_lib PUBLIC ${FREETYPE_LIBRARIES})

if(RAQM_FOUND)
  target_link_libraries(supertux2_lib PUBLIC ${HARFBUZZ_LIBRARY} ${FRIBIDI_LIBRARY} ${RAQM_LIBRARY})
endif()

target_link_libraries(supertux2_lib PUBLIC squirrel_lib)
target_link_libraries(supertux2_lib PUBLIC sqstdlib_lib)
target_link_libraries(supertux2_lib PUBLIC tinygettext_lib)
target_link_libraries(supertux2_lib PUBLIC sexp)
target_link_libraries(supertux2_lib PUBLIC savepng)
if(ENABLE_DISCORD)
target_link_libraries(supertux2_lib PUBLIC discord-rpc)
endif(ENABLE_DISCORD)
if(VCPKG_BUILD)
  target_link_libraries(supertux2_lib PUBLIC OpenAL::OpenAL)
else()
  target_link_libraries(supertux2_lib PUBLIC ${OPENAL_LIBRARY})
endif()
target_link_libraries(supertux2_lib PUBLIC ${OGGVORBIS_LIBRARIES})
target_link_libraries(supertux2_lib PUBLIC ${Boost_LIBRARIES})
if(USE_SYSTEM_PHYSFS)
  target_link_libraries(supertux2_lib PUBLIC ${PHYSFS_LIBRARY})
else()
  add_dependencies(supertux2_lib physfs)
  target_link_libraries(supertux2_lib PUBLIC physfs_lib)
  if(APPLE)
    target_link_libraries(supertux2_lib PUBLIC "-framework CoreFoundation")
    target_link_libraries(supertux2_lib PUBLIC "-framework Foundation")
    target_link_libraries(supertux2_lib PUBLIC "-framework IOKit")
  endif()
endif()

if(HAVE_OPENGL)
  target_link_libraries(supertux2_lib PUBLIC ${OPENGL_LIBRARY})
  if(NOT ENABLE_OPENGLES2)
    if(GLBINDING_FOUND)
      target_link_libraries(supertux2_lib PUBLIC ${GLBINDING_LIBRARIES})
    else()
      target_link_libraries(supertux2_lib PUBLIC GLEW::GLEW)
    endif()
  endif()
endif(HAVE_OPENGL)

if(HAVE_LIBCURL)
  if(VCPKG_BUILD)
    target_link_libraries(supertux2_lib PUBLIC ${CURL_LIBRARIES})
  else()
    target_link_libraries(supertux2_lib PUBLIC ${CURL_LIBRARY})
  endif()
endif(HAVE_LIBCURL)

if(BUILD_TESTS)
  find_package(Threads REQUIRED)

  # build gtest
  # ${CMAKE_CURRENT_SOURCE_DIR} in include_directories is needed to generate -isystem instead of -I flags
  add_library(gtest_main STATIC ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest/googletest/src/gtest_main.cc)
  target_include_directories(gtest_main SYSTEM PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest/googletest/include/)
  add_library(gtest STATIC ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest/googletest/src/gtest-all.cc)
  target_include_directories(gtest SYSTEM PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest/googletest/)
  target_include_directories(gtest SYSTEM PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/external/googletest/googletest/include/)

  # build SuperTux tests
  file(GLOB 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_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_SOURCE_DIR}
    COMMAND test_supertux2)
endif()

## Install stuff

option(DISABLE_CPACK_BUNDLING "Build an .app bundle without CPack" OFF)
if(WIN32 AND NOT UNIX)

  set(INSTALL_SUBDIR_BIN "bin" CACHE STRING "Installation subdir for binaries")
  set(INSTALL_SUBDIR_SHARE "data" CACHE STRING "Installation subdir for data")
  set(INSTALL_SUBDIR_DOC "doc" CACHE STRING "Installation subdir for docs")

  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(WIN32 AND NOT UNIX)
  if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND DISABLE_CPACK_BUNDLING)

    set(INFOPLIST_CFBUNDLEEXECUTABLE "supertux2")

    set(INSTALL_SUBDIR_BIN "SuperTux.app/Contents/MacOS" CACHE STRING "Installation subdir for binaries")
    set(INSTALL_SUBDIR_SHARE "SuperTux.app/Contents/Resources/data" CACHE STRING "Installation subdir for data")
    set(INSTALL_SUBDIR_DOC "SuperTux.app/Contents/Resources" CACHE STRING "Installation subdir for docs")

    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(${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND DISABLE_CPACK_BUNDLING)

    set(INSTALL_SUBDIR_BIN "games" CACHE STRING "Installation subdir for binaries")
    set(INSTALL_SUBDIR_SHARE "share/games/supertux2" CACHE STRING "Installation subdir for data")
    set(INSTALL_SUBDIR_DOC "share/doc/supertux2" CACHE STRING "Installation subdir for docs")

    install(FILES ${CMAKE_CURRENT_SOURCE_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/")
    install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/supertux2.svg DESTINATION "share/icons/hicolor/scalable/apps")

  endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND DISABLE_CPACK_BUNDLING)
endif(WIN32 AND NOT UNIX)

install(TARGETS supertux2 DESTINATION ${INSTALL_SUBDIR_BIN})

if(WIN32)
  get_property(SQUIRREL_LIB_PATH TARGET squirrel_lib PROPERTY IMPORTED_LOCATION)
  get_property(SQSTDLIB_LIB_PATH TARGET sqstdlib_lib PROPERTY IMPORTED_LOCATION)
  get_property(PHYSFS_LIB_PATH TARGET physfs_lib PROPERTY IMPORTED_LOCATION)
  install(FILES ${SQUIRREL_LIB_PATH} ${SQSTDLIB_LIB_PATH} ${PHYSFS_LIB_PATH} DESTINATION ${INSTALL_SUBDIR_BIN})
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")

## Create config.h now that INSTALL_SUBDIR_* have been set.

configure_file(config.h.cmake ${CMAKE_BINARY_DIR}/config.h )

## Configure main menu logo
if(("${SUPERTUX_VERSION_STRING}" MATCHES "^v[0-9]+\\.[0-9]+\\.[0-9]+$") OR IS_SUPERTUX_RELEASE)
  set(LOGO_FILE "logo_final.sprite")
else()
  set(LOGO_FILE "logo.sprite")
endif()
configure_file(data/levels/misc/menu.stl.in ${CMAKE_BINARY_DIR}/data/levels/misc/menu.stl )


## CPack/Installation-specific stuff

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 <supertux-devel@lists.lethargik.org>")
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 ${SUPERTUX_VERSION_PATCH})
endif(SUPERTUX_VERSION_TWEAK)
set(CPACK_PACKAGE_FILE_NAME "${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)
else(WIN32 AND NOT UNIX)
endif(WIN32 AND NOT UNIX)
include(CPack)

# move some config clutter to the advanced section
mark_as_advanced(
  INSTALL_SUBDIR_BIN
  INSTALL_SUBDIR_SHARE
  INSTALL_SUBDIR_DOC
  )

mark_as_advanced(
  CMAKE_BACKWARDS_COMPATIBILITY
  CMAKE_BUILD_TYPE
  CMAKE_INSTALL_PREFIX
  EXECUTABLE_OUTPUT_PATH
  LIBRARY_OUTPUT_PATH
  CMAKE_OSX_ARCHITECTURES
  CMAKE_OSX_SYSROOT
  )

mark_as_advanced(
  APPDATADIR
  )

mark_as_advanced(
  Boost_INCLUDE_DIR
  Boost_LIBRARIES
  )

mark_as_advanced(
  GLEW_INCLUDE_DIR
  GLEW_LIBRARY
  )

mark_as_advanced(
  SDL2_INCLUDE_DIRS
  SDL2_LIBRARIES
  )

mark_as_advanced(
  SDL2IMAGE_INCLUDE_DIRS
  SDL2IMAGE_LIBRARIES
  )

mark_as_advanced(
  OPENAL_INCLUDE_DIR
  OPENAL_LIBRARY
  )

mark_as_advanced(
  SDL2TTF_INCLUDE_DIRS
  SDL2TTF_LIBRARIES
  )

mark_as_advanced(
  OGG_LIBRARY
  VORBISENC_LIBRARY
  VORBISFILE_LIBRARY
  VORBIS_INCLUDE_DIR
  VORBIS_LIBRARY
  )

mark_as_advanced(
  PHYSFS_INCLUDE_DIR
  PHYSFS_LIBRARY
  )