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dolphin/CMake/FindSDL2.cmake
Michael Maltese 45d1f88ea7 CMake: move modules from CMakeTests/ -> CMake/ 
The name "CMakeTests" is inaccurate and irregular.
2017-02-07 22:55:27 -08:00

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