# SDL2_LIBRARIES, the name of the library to link against # SDL2_FOUND, if false, do not try to link to SDL2 # SDL2_INCLUDE_DIRS, where to find SDL.h # # Don't forget to include SDLmain.h and SDLmain.m your project for the # OS X framework based version. (Other versions link to -lSDL2main which # this module will try to find on your behalf.) Also for OS X, this # module will automatically add the -framework Cocoa on your behalf. # # # Additional Note: If you see an empty SDL2_LIBRARIES_TEMP in your configuration # and no SDL2_LIBRARIES, it means CMake did not find your SDL2 library # (SDL2.dll, libsdl2.so, SDL2.framework, etc). # Set SDL2_LIBRARIES_TEMP to point to your SDL2 library, and configure again. # Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value # as appropriate. These values are used to generate the final SDL2_LIBRARIES # variable, but when these values are unset, SDL2_LIBRARIES does not get created. # # # $SDL2DIR is an environment variable that would # correspond to the ./configure --prefix=$SDL2DIR # used in building SDL2. # l.e.galup 9-20-02 # # Modified by Eric Wing. # Added code to assist with automated building by using environmental variables # and providing a more controlled/consistent search behavior. # Added new modifications to recognize OS X frameworks and # additional Unix paths (FreeBSD, etc). # Also corrected the header search path to follow "proper" SDL guidelines. # Added a search for SDL2main which is needed by some platforms. # Added a search for threads which is needed by some platforms. # Added needed compile switches for MinGW. # # On OSX, this will prefer the Framework version (if found) over others. # People will have to manually change the cache values of # SDL2_LIBRARIES to override this selection or set the CMake environment # CMAKE_INCLUDE_PATH to modify the search paths. # # Note that the header path has changed from SDL2/SDL.h to just SDL.h # This needed to change because "proper" SDL convention # is #include "SDL.h", not . This is done for portability # reasons because not all systems place things in SDL2/ (see FreeBSD). # #========================================================================= # # Copyright (c) 1993-2015 Ken Martin, Will Schroeder, Bill Lorensen # 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 name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names # of any 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 THE AUTHORS OR CONTRIBUTORS 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. # #========================================================================= # SET(SDL2_SEARCH_PATHS ~/Library/Frameworks /Library/Frameworks /usr/local /usr /sw # Fink /opt/local # DarwinPorts /opt/csw # Blastwave /opt ${SDL2_PATH} ) FIND_PATH(SDL2_INCLUDE_DIRS SDL.h HINTS $ENV{SDL2DIR} PATH_SUFFIXES include/SDL2 include PATHS ${SDL2_SEARCH_PATHS} ${SDL2_LIBRARIES_TEMP}/../.. ) FIND_LIBRARY(SDL2_LIBRARIES_TEMP NAMES SDL2 HINTS $ENV{SDL2DIR} PATH_SUFFIXES lib64 lib PATHS ${SDL2_SEARCH_PATHS} ${SDL2_INCLUDE_DIRS}/../.. ) IF(NOT ${SDL2_INCLUDE_DIRS} MATCHES ".framework") # Non-OS X framework versions expect you to also dynamically link to # SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms # seem to provide SDL2main for compatibility even though they don't # necessarily need it. FIND_LIBRARY(SDL2MAIN_LIBRARY NAMES SDL2main HINTS $ENV{SDL2DIR} PATH_SUFFIXES lib64 lib PATHS ${SDL2_SEARCH_PATHS} ) ENDIF(NOT ${SDL2_INCLUDE_DIRS} MATCHES ".framework") # SDL2 may require threads on your system. # The Apple build may not need an explicit flag because one of the # frameworks may already provide it. # But for non-OSX systems, I will use the CMake Threads package. IF(NOT APPLE) FIND_PACKAGE(Threads) ENDIF(NOT APPLE) # MinGW needs an additional library, mwindows # It's total link flags should look like -lmingw32 -lSDL2main -lSDL2 -lmwindows # (Actually on second look, I think it only needs one of the m* libraries.) IF(MINGW) SET(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW") ENDIF(MINGW) IF(SDL2_LIBRARIES_TEMP) # For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa. # CMake doesn't display the -framework Cocoa string in the UI even # though it actually is there if I modify a pre-used variable. # I think it has something to do with the CACHE STRING. # So I use a temporary variable until the end so I can set the # "real" variable in one-shot. IF(APPLE) SET(SDL2_LIBRARIES_TEMP ${SDL2_LIBRARIES_TEMP} "-framework Cocoa") ENDIF(APPLE) # For threads, as mentioned Apple doesn't need this. # In fact, there seems to be a problem if I used the Threads package # and try using this line, so I'm just skipping it entirely for OS X. IF(NOT APPLE) SET(SDL2_LIBRARIES_TEMP ${SDL2_LIBRARIES_TEMP} ${CMAKE_THREAD_LIBS_INIT}) ENDIF(NOT APPLE) # For MinGW library IF(MINGW) SET(SDL2_LIBRARIES_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARIES_TEMP}) ENDIF(MINGW) # Set the final string here so the GUI reflects the final state. SET(SDL2_LIBRARIES ${SDL2_LIBRARIES_TEMP} CACHE STRING "Where the SDL2 Library can be found") # Set the temp variable to INTERNAL so it is not seen in the CMake GUI SET(SDL2_LIBRARIES_TEMP "${SDL2_LIBRARIES_TEMP}" CACHE INTERNAL "") ENDIF(SDL2_LIBRARIES_TEMP) INCLUDE(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARIES SDL2_INCLUDE_DIRS)