ref: e01bd185a58dabd79ccdb14d725f32a2800db577
dir: /cmake/FindSDL2.cmake/
# FindSDL2.cmake # # Copyright (c) 2018, Alex Mayfield <[email protected]> # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the <organization> nor the # names of its contributors may be used to endorse or promote products # derived from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # # Currently works with the following generators: # - Unix Makefiles (Linux, MSYS2) # - Ninja (Linux, MSYS2) # - Visual Studio # Cache variable that allows you to point CMake at a directory containing # an extracted development library. set(SDL2_DIR "${SDL2_DIR}" CACHE PATH "Location of SDL2 library directory") # Use pkg-config to find library locations in *NIX environments. find_package(PkgConfig QUIET) if(PKG_CONFIG_FOUND) pkg_search_module(PC_SDL2 QUIET sdl2) endif() # Find the include directory. find_path(SDL2_INCLUDE_DIR "SDL_version.h" HINTS "${SDL2_DIR}/include" ${PC_SDL2_INCLUDE_DIRS}) # Find the version. Taken and modified from CMake's FindSDL.cmake. if(SDL2_INCLUDE_DIR AND EXISTS "${SDL2_INCLUDE_DIR}/SDL_version.h") file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$") file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$") file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$") string(REGEX REPLACE "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_MAJOR "${SDL2_VERSION_MAJOR_LINE}") string(REGEX REPLACE "^#define[ \t]+SDL_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_MINOR "${SDL2_VERSION_MINOR_LINE}") string(REGEX REPLACE "^#define[ \t]+SDL_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_PATCH "${SDL2_VERSION_PATCH_LINE}") set(SDL2_VERSION "${SDL2_VERSION_MAJOR}.${SDL2_VERSION_MINOR}.${SDL2_VERSION_PATCH}") unset(SDL2_VERSION_MAJOR_LINE) unset(SDL2_VERSION_MINOR_LINE) unset(SDL2_VERSION_PATCH_LINE) unset(SDL2_VERSION_MAJOR) unset(SDL2_VERSION_MINOR) unset(SDL2_VERSION_PATCH) endif() # Find the SDL2 and SDL2main libraries if(CMAKE_SIZEOF_VOID_P STREQUAL 8) find_library(SDL2_LIBRARY "SDL2" HINTS "${SDL2_DIR}/lib/x64" ${PC_SDL2_LIBRARY_DIRS}) find_library(SDL2_MAIN_LIBRARY "SDL2main" HINTS "${SDL2_DIR}/lib/x64" ${PC_SDL2_LIBRARY_DIRS}) else() find_library(SDL2_LIBRARY "SDL2" HINTS "${SDL2_DIR}/lib/x86" ${PC_SDL2_LIBRARY_DIRS}) find_library(SDL2_MAIN_LIBRARY "SDL2main" HINTS "${SDL2_DIR}/lib/x86" ${PC_SDL2_LIBRARY_DIRS}) endif() set(SDL2_LIBRARIES "${SDL2_MAIN_LIBRARY}" "${SDL2_LIBRARY}") include(FindPackageHandleStandardArgs) find_package_handle_standard_args(SDL2 FOUND_VAR SDL2_FOUND REQUIRED_VARS SDL2_INCLUDE_DIR SDL2_LIBRARIES VERSION_VAR SDL2_VERSION ) if(SDL2_FOUND) # SDL2 imported target. add_library(SDL2::SDL2 UNKNOWN IMPORTED) set_target_properties(SDL2::SDL2 PROPERTIES INTERFACE_COMPILE_OPTIONS "${PC_SDL2_CFLAGS_OTHER}" INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}" IMPORTED_LOCATION "${SDL2_LIBRARY}") # SDL2main imported target. if(MINGW) # Gross hack to get mingw32 first in the linker order. add_library(SDL2::_SDL2main_detail UNKNOWN IMPORTED) set_target_properties(SDL2::_SDL2main_detail PROPERTIES IMPORTED_LOCATION "${SDL2_MAIN_LIBRARY}") # Ensure that SDL2main comes before SDL2 in the linker order. CMake # isn't smart enough to keep proper ordering for indirect dependencies # so we have to spell it out here. target_link_libraries(SDL2::_SDL2main_detail INTERFACE SDL2::SDL2) add_library(SDL2::SDL2main INTERFACE IMPORTED) set_target_properties(SDL2::SDL2main PROPERTIES IMPORTED_LIBNAME mingw32) target_link_libraries(SDL2::SDL2main INTERFACE SDL2::_SDL2main_detail) else() add_library(SDL2::SDL2main UNKNOWN IMPORTED) set_target_properties(SDL2::SDL2main PROPERTIES IMPORTED_LOCATION "${SDL2_MAIN_LIBRARY}") endif() endif()