# This module defines # SDL2_LIBRARY, the name of the library to link against # SDL2_FOUND, if false, do not try to link to SDL2 # SDL2_INCLUDE_DIR, where to find SDL.h # # This module responds to the the flag: # SDL2_BUILDING_LIBRARY # If this is defined, then no SDL2main will be linked in because # only applications need main(). # Otherwise, it is assumed you are building an application and this # module will attempt to locate and set the the proper link flags # as part of the returned SDL2_LIBRARY variable. # # 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_LIBRARY_TEMP in your configuration # and no SDL2_LIBRARY, it means CMake did not find your SDL2 library # (SDL2.dll, libsdl2.so, SDL2.framework, etc). # Set SDL2_LIBRARY_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_LIBRARY # variable, but when these values are unset, SDL2_LIBRARY 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_LIBRARY 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 2003-2009 Kitware, Inc. # # Distributed under the OSI-approved BSD License (the "License"). # # This software is distributed WITHOUT ANY WARRANTY; without even the # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # See the License for more information. #============================================================================= # CMake - Cross Platform Makefile Generator # Copyright 2000-2016 Kitware, Inc. # Copyright 2000-2011 Insight Software Consortium # 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 names of Kitware, Inc., the Insight Software Consortium, # nor the names of their 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 COPYRIGHT # HOLDER 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. # # ------------------------------------------------------------------------------ # # The above copyright and license notice applies to distributions of # CMake in source and binary form. Some source files contain additional # notices of original copyright by their contributors; see each source # for details. Third-party software packages supplied with CMake under # compatible licenses provide their own copyright notices documented in # corresponding subdirectories. # # ------------------------------------------------------------------------------ # # CMake was initially developed by Kitware with the following sponsorship: # # * National Library of Medicine at the National Institutes of Health # as part of the Insight Segmentation and Registration Toolkit (ITK). # # * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel # Visualization Initiative. # # * National Alliance for Medical Image Computing (NAMIC) is funded by the # National Institutes of Health through the NIH Roadmap for Medical Research, # Grant U54 EB005149. # # * Kitware, Inc. # message("") SET(SDL2_SEARCH_PATHS /usr/local /usr /sw # Fink /opt/local # DarwinPorts /opt/csw # Blastwave /opt ${SDL2_PATH} ) IF(NOT APPLE) FIND_LIBRARY(SDL2_LIBRARY_TEMP NAMES SDL2 HINTS $ENV{SDL2DIR} PATH_SUFFIXES lib64 lib PATHS ${SDL2_SEARCH_PATHS} ) ELSE() # Statically link against SDL2 on OS X FIND_LIBRARY(SDL2_LIBRARY_TEMP NAMES libSDL2.a HINTS $ENV{SDL2DIR} PATH_SUFFIXES lib64 lib PATHS ${SDL2_SEARCH_PATHS} ) ENDIF(NOT APPLE) IF(SDL2_LIBRARY_TEMP) FIND_PATH(SDL2_INCLUDE_DIR SDL.h HINTS $ENV{SDL2DIR} PATH_SUFFIXES include/SDL2 include PATHS ${SDL2_SEARCH_PATHS} ) IF(NOT SDL2_BUILDING_LIBRARY) IF(NOT ${SDL2_INCLUDE_DIR} 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_DIR} MATCHES ".framework") ENDIF(NOT SDL2_BUILDING_LIBRARY) # 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) # For SDL2main IF(NOT SDL2_BUILDING_LIBRARY) IF(SDL2MAIN_LIBRARY) SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP}) ENDIF(SDL2MAIN_LIBRARY) ENDIF(NOT SDL2_BUILDING_LIBRARY) # 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_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Carbon") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework ForceFeedback") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework IOKit") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework CoreAudio") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework CoreVideo") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework AudioToolbox") SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework AudioUnit") 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_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT}) ENDIF(NOT APPLE) # For MinGW library IF(MINGW) SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP}) ENDIF(MINGW) # Set the final string here so the GUI reflects the final state. SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found") # Unset the temp variable to INTERNAL so it is not seen in the CMake GUI UNSET(SDL2_LIBRARY_TEMP) ENDIF(SDL2_LIBRARY_TEMP) message("") INCLUDE(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)