250 lines
7.5 KiB
CMake
250 lines
7.5 KiB
CMake
# - Find SDL2
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# Find the SDL2 headers and libraries
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#
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# SDL2::SDL2 - Imported target to use for building a library
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# SDL2::SDL2main - Imported interface target to use if you want SDL and SDLmain.
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# SDL2_FOUND - True if SDL2 was found.
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# SDL2_DYNAMIC - If we found a DLL version of SDL (meaning you might want to copy a DLL from SDL2::SDL2)
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#
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# Original Author:
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# 2015 Ryan Pavlik <ryan.pavlik@gmail.com> <abiryan@ryand.net>
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#
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# Copyright Sensics, Inc. 2015.
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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# Set up architectures (for windows) and prefixes (for mingw builds)
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if(WIN32)
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if(MINGW)
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include(MinGWSearchPathExtras OPTIONAL)
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if(MINGWSEARCH_TARGET_TRIPLE)
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set(SDL2_PREFIX ${MINGWSEARCH_TARGET_TRIPLE})
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endif()
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endif()
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(SDL2_LIB_PATH_SUFFIX lib/x64)
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if(NOT MSVC AND NOT SDL2_PREFIX)
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set(SDL2_PREFIX x86_64-w64-mingw32)
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endif()
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else()
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set(SDL2_LIB_PATH_SUFFIX lib/x86)
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if(NOT MSVC AND NOT SDL2_PREFIX)
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set(SDL2_PREFIX i686-w64-mingw32)
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endif()
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endif()
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endif()
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if(SDL2_PREFIX)
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set(SDL2_ORIGPREFIXPATH ${CMAKE_PREFIX_PATH})
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if(SDL2_ROOT_DIR)
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list(APPEND CMAKE_PREFIX_PATH "${SDL2_ROOT_DIR}")
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endif()
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if(CMAKE_PREFIX_PATH)
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foreach(_prefix ${CMAKE_PREFIX_PATH})
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list(APPEND CMAKE_PREFIX_PATH "${_prefix}/${SDL2_PREFIX}")
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endforeach()
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endif()
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if(MINGWSEARCH_PREFIXES)
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list(APPEND CMAKE_PREFIX_PATH ${MINGWSEARCH_PREFIXES})
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endif()
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endif()
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# Invoke pkgconfig for hints
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find_package(PkgConfig QUIET)
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set(SDL2_INCLUDE_HINTS)
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set(SDL2_LIB_HINTS)
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if(PKG_CONFIG_FOUND)
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pkg_search_module(SDL2PC QUIET sdl2)
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if(SDL2PC_INCLUDE_DIRS)
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set(SDL2_INCLUDE_HINTS ${SDL2PC_INCLUDE_DIRS})
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endif()
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if(SDL2PC_LIBRARY_DIRS)
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set(SDL2_LIB_HINTS ${SDL2PC_LIBRARY_DIRS})
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_library(SDL2_LIBRARY
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NAMES
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SDL2
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HINTS
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${SDL2_LIB_HINTS}
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PATHS
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${SDL2_ROOT_DIR}
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ENV SDL2DIR
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PATH_SUFFIXES lib SDL2 ${SDL2_LIB_PATH_SUFFIX})
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set(_sdl2_framework FALSE)
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# Some special-casing if we've found/been given a framework.
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# Handles whether we're given the library inside the framework or the framework itself.
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if(APPLE AND "${SDL2_LIBRARY}" MATCHES "(/[^/]+)*.framework(/.*)?$")
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set(_sdl2_framework TRUE)
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set(SDL2_FRAMEWORK "${SDL2_LIBRARY}")
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# Move up in the directory tree as required to get the framework directory.
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while("${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework(/.*)$" AND NOT "${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework$")
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get_filename_component(SDL2_FRAMEWORK "${SDL2_FRAMEWORK}" DIRECTORY)
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endwhile()
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if("${SDL2_FRAMEWORK}" MATCHES "(/[^/]+)*.framework$")
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set(SDL2_FRAMEWORK_NAME ${CMAKE_MATCH_1})
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# If we found a framework, do a search for the header ahead of time that will be more likely to get the framework header.
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find_path(SDL2_INCLUDE_DIR
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NAMES
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SDL_haptic.h # this file was introduced with SDL2
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HINTS
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"${SDL2_FRAMEWORK}/Headers/")
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else()
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# For some reason we couldn't get the framework directory itself.
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# Shouldn't happen, but might if something is weird.
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unset(SDL2_FRAMEWORK)
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endif()
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endif()
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find_path(SDL2_INCLUDE_DIR
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NAMES
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SDL_haptic.h # this file was introduced with SDL2
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HINTS
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${SDL2_INCLUDE_HINTS}
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PATHS
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${SDL2_ROOT_DIR}
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ENV SDL2DIR
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PATH_SUFFIXES include include/sdl2 include/SDL2 SDL2)
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if(WIN32 AND SDL2_LIBRARY)
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find_file(SDL2_RUNTIME_LIBRARY
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NAMES
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SDL2.dll
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libSDL2.dll
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HINTS
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${SDL2_LIB_HINTS}
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PATHS
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${SDL2_ROOT_DIR}
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ENV SDL2DIR
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PATH_SUFFIXES bin lib ${SDL2_LIB_PATH_SUFFIX})
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endif()
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if(WIN32 OR ANDROID OR IOS OR (APPLE AND NOT _sdl2_framework))
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set(SDL2_EXTRA_REQUIRED SDL2_SDLMAIN_LIBRARY)
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find_library(SDL2_SDLMAIN_LIBRARY
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NAMES
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SDL2main
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PATHS
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${SDL2_ROOT_DIR}
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ENV SDL2DIR
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PATH_SUFFIXES lib ${SDL2_LIB_PATH_SUFFIX})
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endif()
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if(MINGW AND NOT SDL2PC_FOUND)
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find_library(SDL2_MINGW_LIBRARY mingw32)
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find_library(SDL2_MWINDOWS_LIBRARY mwindows)
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endif()
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if(SDL2_PREFIX)
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# Restore things the way they used to be.
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set(CMAKE_PREFIX_PATH ${SDL2_ORIGPREFIXPATH})
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endif()
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# handle the QUIETLY and REQUIRED arguments and set QUATLIB_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(SDL2
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DEFAULT_MSG
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SDL2_LIBRARY
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SDL2_INCLUDE_DIR
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${SDL2_EXTRA_REQUIRED})
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if(SDL2_FOUND)
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if(NOT TARGET SDL2::SDL2)
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# Create SDL2::SDL2
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if(WIN32 AND SDL2_RUNTIME_LIBRARY)
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set(SDL2_DYNAMIC TRUE)
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add_library(SDL2::SDL2 SHARED IMPORTED)
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set_target_properties(SDL2::SDL2
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PROPERTIES
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IMPORTED_IMPLIB "${SDL2_LIBRARY}"
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IMPORTED_LOCATION "${SDL2_RUNTIME_LIBRARY}"
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INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
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)
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else()
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add_library(SDL2::SDL2 UNKNOWN IMPORTED)
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if(SDL2_FRAMEWORK AND SDL2_FRAMEWORK_NAME)
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# Handle the case that SDL2 is a framework and we were able to decompose it above.
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set_target_properties(SDL2::SDL2 PROPERTIES
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IMPORTED_LOCATION "${SDL2_FRAMEWORK}/${SDL2_FRAMEWORK_NAME}")
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elseif(_sdl2_framework AND SDL2_LIBRARY MATCHES "(/[^/]+)*.framework$")
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# Handle the case that SDL2 is a framework and SDL_LIBRARY is just the framework itself.
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# This takes the basename of the framework, without the extension,
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# and sets it (as a child of the framework) as the imported location for the target.
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# This is the library symlink inside of the framework.
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set_target_properties(SDL2::SDL2 PROPERTIES
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IMPORTED_LOCATION "${SDL2_LIBRARY}/${CMAKE_MATCH_1}")
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else()
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# Handle non-frameworks (including non-Mac), as well as the case that we're given the library inside of the framework
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set_target_properties(SDL2::SDL2 PROPERTIES
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IMPORTED_LOCATION "${SDL2_LIBRARY}")
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endif()
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set_target_properties(SDL2::SDL2
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PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}"
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)
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endif()
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if(APPLE)
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# Need Cocoa here, is always a framework
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find_library(SDL2_COCOA_LIBRARY Cocoa)
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list(APPEND SDL2_EXTRA_REQUIRED SDL2_COCOA_LIBRARY)
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if(SDL2_COCOA_LIBRARY)
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set_target_properties(SDL2::SDL2 PROPERTIES
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IMPORTED_LINK_INTERFACE_LIBRARIES ${SDL2_COCOA_LIBRARY})
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endif()
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endif()
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# Compute what to do with SDL2main
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set(SDL2MAIN_LIBRARIES SDL2::SDL2)
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add_library(SDL2::SDL2main INTERFACE IMPORTED)
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if(SDL2_SDLMAIN_LIBRARY)
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add_library(SDL2::SDL2main_real STATIC IMPORTED)
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set_target_properties(SDL2::SDL2main_real
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PROPERTIES
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IMPORTED_LOCATION "${SDL2_SDLMAIN_LIBRARY}")
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set(SDL2MAIN_LIBRARIES SDL2::SDL2main_real ${SDL2MAIN_LIBRARIES})
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endif()
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if(MINGW)
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# MinGW requires some additional libraries to appear earlier in the link line.
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if(SDL2PC_LIBRARIES)
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# Use pkgconfig-suggested extra libraries if available.
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list(REMOVE_ITEM SDL2PC_LIBRARIES SDL2main SDL2)
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set(SDL2MAIN_LIBRARIES ${SDL2PC_LIBRARIES} ${SDL2MAIN_LIBRARIES})
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else()
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# fall back to extra libraries specified in pkg-config in
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# an official binary distro of SDL2 for MinGW I downloaded
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if(SDL2_MINGW_LIBRARY)
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set(SDL2MAIN_LIBRARIES ${SDL2_MINGW_LIBRARY} ${SDL2MAIN_LIBRARIES})
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endif()
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if(SDL2_MWINDOWS_LIBRARY)
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set(SDL2MAIN_LIBRARIES ${SDL2_MWINDOWS_LIBRARY} ${SDL2MAIN_LIBRARIES})
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endif()
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endif()
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set_target_properties(SDL2::SDL2main
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PROPERTIES
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INTERFACE_COMPILE_DEFINITIONS "main=SDL_main")
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endif()
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set_target_properties(SDL2::SDL2main
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PROPERTIES
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INTERFACE_LINK_LIBRARIES "${SDL2MAIN_LIBRARIES}")
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endif()
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mark_as_advanced(SDL2_ROOT_DIR)
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endif()
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mark_as_advanced(SDL2_LIBRARY
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SDL2_RUNTIME_LIBRARY
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SDL2_INCLUDE_DIR
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SDL2_SDLMAIN_LIBRARY
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SDL2_COCOA_LIBRARY
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SDL2_MINGW_LIBRARY
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SDL2_MWINDOWS_LIBRARY)
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