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			129 lines
		
	
	
	
		
			5.1 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
			
		
		
	
	
			129 lines
		
	
	
	
		
			5.1 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
| # Locate SDL2 library
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| # This module defines
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| # SDL2_LIBRARY, the SDL2 library, with no other libraries
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| # SDL2_LIBRARIES, the SDL library and required components with compiler flags
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| # SDL2_FOUND, if false, do not try to link to SDL2
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| # SDL2_INCLUDE_DIR, where to find SDL.h
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| # SDL2_VERSION, the version of the found library
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| #
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| # This module accepts the following env variables
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| #  SDL2DIR - Can be set to ./configure --prefix=$SDL2DIR used in building SDL2. l.e.galup 9-20-02
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| # This module responds to the the flag:
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| # SDL2_BUILDING_LIBRARY
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| # If this is defined, then no SDL2_main will be linked in because
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| # only applications need main().
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| # Otherwise, it is assumed you are building an application and this
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| # module will attempt to locate and set the the proper link flags
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| # as part of the returned SDL2_LIBRARIES variable.
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| #
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| # Don't forget to include SDL2main.h and SDL2main.m your project for the
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| # OS X framework based version. (Other versions link to -lSDL2main which
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| # this module will try to find on your behalf.) Also for OS X, this
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| # module will automatically add the -framework Cocoa on your behalf.
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| #
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| #
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| # Modified by Eric Wing.
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| # Added code to assist with automated building by using environmental variables
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| # and providing a more controlled/consistent search behavior.
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| # Added new modifications to recognize OS X frameworks and
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| # additional Unix paths (FreeBSD, etc).
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| # Also corrected the header search path to follow "proper" SDL2 guidelines.
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| # Added a search for SDL2main which is needed by some platforms.
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| # Added a search for threads which is needed by some platforms.
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| # Added needed compile switches for MinGW.
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| #
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| # On OSX, this will prefer the Framework version (if found) over others.
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| # People will have to manually change the cache values of
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| # SDL2_LIBRARY to override this selection or set the CMake environment
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| # CMAKE_INCLUDE_PATH to modify the search paths.
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| #
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| # Note that the header path has changed from SDL2/SDL.h to just SDL.h
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| # This needed to change because "proper" SDL2 convention
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| # is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability
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| # reasons because not all systems place things in SDL2/ (see FreeBSD).
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| #
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| # Ported by Johnny Patterson. This is a literal port for SDL2 of the FindSDL.cmake
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| # module with the minor edit of changing "SDL" to "SDL2" where necessary. This
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| # was not created for redistribution, and exists temporarily pending official
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| # SDL2 CMake modules.
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| 
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| #=============================================================================
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| # Copyright 2003-2009 Kitware, Inc.
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| #
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| # Distributed under the OSI-approved BSD License (the "License");
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| # see accompanying file Copyright.txt for details.
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| #
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| # This software is distributed WITHOUT ANY WARRANTY; without even the
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| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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| # See the License for more information.
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| #=============================================================================
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| # (To distribute this file outside of CMake, substitute the full
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| #  License text for the above reference.)
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| 
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| 
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| if (CMAKE_SIZEOF_VOID_P EQUAL 8)
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|     set(_sdl_lib_suffix lib/x64)
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| else()
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|     set(_sdl_lib_suffix lib/x86)
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| endif()
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| 
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| libfind_pkg_detect(SDL2 sdl2
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|     FIND_PATH SDL.h
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|         HINTS $ENV{SDL2DIR}
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|         PATH_SUFFIXES include SDL2 include/SDL2
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|     FIND_LIBRARY SDL2
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|         HINTS $ENV{SDL2DIR}
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|         PATH_SUFFIXES lib ${_sdl_lib_suffix}
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| )
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| libfind_version_n_header(SDL2 NAMES SDL_version.h DEFINES SDL_MAJOR_VERSION SDL_MINOR_VERSION SDL_PATCHLEVEL)
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| 
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| IF(NOT SDL2_BUILDING_LIBRARY AND NOT APPLE)
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|     # Non-OS X framework versions expect you to also dynamically link to
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|     # SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms
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|     # seem to provide SDL2main for compatibility even though they don't
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|     # necessarily need it.
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|     libfind_pkg_detect(SDL2MAIN sdl2
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|         FIND_LIBRARY SDL2main
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|             HINTS $ENV{SDL2DIR}
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|             PATH_SUFFIXES lib ${_sdl_lib_suffix}
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|     )
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|     set(SDL2MAIN_FIND_QUIETLY TRUE)
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|     libfind_process(SDL2MAIN)
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|     list(APPEND SDL2_PROCESS_LIBS SDL2MAIN_LIBRARY)
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| ENDIF()
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| 
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| 
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| set(SDL2_TARGET_SPECIFIC)
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| 
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| if (APPLE)
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|     # For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa.
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|     list(APPEND SDL2_TARGET_SPECIFIC "-framework Cocoa")
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| else()
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|     # SDL2 may require threads on your system.
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|     # The Apple build may not need an explicit flag because one of the
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|     # frameworks may already provide it.
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|     # But for non-OSX systems, I will use the CMake Threads package.
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|     libfind_package(SDL2 Threads)
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|     list(APPEND SDL2_TARGET_SPECIFIC ${CMAKE_THREAD_LIBS_INIT})
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| endif()
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| 
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| # MinGW needs an additional library, mwindows
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| # It's total link flags should look like -lmingw32 -lSDL2main -lSDL2 -lmwindows
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| # (Actually on second look, I think it only needs one of the m* libraries.)
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| if(MINGW)
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|     list(APPEND SDL2_TARGET_SPECIFIC mingw32)
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| endif()
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| 
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| if(WIN32)
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|     list(APPEND SDL2_TARGET_SPECIFIC winmm imm32 version msimg32)
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| endif()
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| 
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| set(SDL2_PROCESS_LIBS SDL2_TARGET_SPECIFIC)
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| 
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| libfind_process(SDL2)
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| 
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| if (SDL2_STATIC AND UNIX AND NOT APPLE)
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|     execute_process(COMMAND sdl2-config --static-libs OUTPUT_VARIABLE SDL2_STATIC_FLAGS)
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|     string(REGEX REPLACE "(\r?\n)+$" "" SDL2_STATIC_FLAGS "${SDL2_STATIC_FLAGS}")
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|     set(SDL2_LIBRARIES ${SDL2_STATIC_FLAGS})
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| endif()
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