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//proc/self/root/usr/share/cmake/Modules/FindSDL.cmake
# - Locate SDL library # This module defines # SDL_LIBRARY, the name of the library to link against # SDL_FOUND, if false, do not try to link to SDL # SDL_INCLUDE_DIR, where to find SDL.h # SDL_VERSION_STRING, human-readable string containing the version of SDL # # This module responds to the the flag: # SDL_BUILDING_LIBRARY # If this is defined, then no SDL_main 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 SDL_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 -lSDLmain 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 SDL_LIBRARY_TEMP in your configuration # and no SDL_LIBRARY, it means CMake did not find your SDL library # (SDL.dll, libsdl.so, SDL.framework, etc). # Set SDL_LIBRARY_TEMP to point to your SDL library, and configure again. # Similarly, if you see an empty SDLMAIN_LIBRARY, you should set this value # as appropriate. These values are used to generate the final SDL_LIBRARY # variable, but when these values are unset, SDL_LIBRARY does not get created. # # # $SDLDIR is an environment variable that would # correspond to the ./configure --prefix=$SDLDIR # used in building SDL. # 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 SDLmain 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 # SDL_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 SDL/SDL.h to just SDL.h # This needed to change because "proper" SDL convention # is #include "SDL.h", not <SDL/SDL.h>. This is done for portability # reasons because not all systems place things in SDL/ (see FreeBSD). #============================================================================= # Copyright 2003-2009 Kitware, Inc. # Copyright 2012 Benjamin Eikel # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. # # 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. #============================================================================= # (To distribute this file outside of CMake, substitute the full # License text for the above reference.) find_path(SDL_INCLUDE_DIR SDL.h HINTS ENV SDLDIR PATH_SUFFIXES include/SDL include/SDL12 include/SDL11 include ) # SDL-1.1 is the name used by FreeBSD ports... # don't confuse it for the version number. find_library(SDL_LIBRARY_TEMP NAMES SDL SDL-1.1 HINTS ENV SDLDIR PATH_SUFFIXES lib ) if(NOT SDL_BUILDING_LIBRARY) if(NOT ${SDL_INCLUDE_DIR} MATCHES ".framework") # Non-OS X framework versions expect you to also dynamically link to # SDLmain. This is mainly for Windows and OS X. Other (Unix) platforms # seem to provide SDLmain for compatibility even though they don't # necessarily need it. find_library(SDLMAIN_LIBRARY NAMES SDLmain SDLmain-1.1 HINTS ENV SDLDIR PATH_SUFFIXES lib PATHS /sw /opt/local /opt/csw /opt ) endif() endif() # SDL may require threads on your system. # The Apple build may not need an explicit flag because one of the # frameworks may already provide it. # But for non-OSX systems, I will use the CMake Threads package. if(NOT APPLE) find_package(Threads) endif() # MinGW needs an additional library, mwindows # It's total link flags should look like -lmingw32 -lSDLmain -lSDL -lmwindows # (Actually on second look, I think it only needs one of the m* libraries.) if(MINGW) set(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW") endif() if(SDL_LIBRARY_TEMP) # For SDLmain if(SDLMAIN_LIBRARY AND NOT SDL_BUILDING_LIBRARY) list(FIND SDL_LIBRARY_TEMP "${SDLMAIN_LIBRARY}" _SDL_MAIN_INDEX) if(_SDL_MAIN_INDEX EQUAL -1) set(SDL_LIBRARY_TEMP "${SDLMAIN_LIBRARY}" ${SDL_LIBRARY_TEMP}) endif() unset(_SDL_MAIN_INDEX) endif() # For OS X, SDL 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(SDL_LIBRARY_TEMP ${SDL_LIBRARY_TEMP} "-framework Cocoa") endif() # 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(SDL_LIBRARY_TEMP ${SDL_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT}) endif() # For MinGW library if(MINGW) set(SDL_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL_LIBRARY_TEMP}) endif() # Set the final string here so the GUI reflects the final state. set(SDL_LIBRARY ${SDL_LIBRARY_TEMP} CACHE STRING "Where the SDL Library can be found") # Set the temp variable to INTERNAL so it is not seen in the CMake GUI set(SDL_LIBRARY_TEMP "${SDL_LIBRARY_TEMP}" CACHE INTERNAL "") endif() if(SDL_INCLUDE_DIR AND EXISTS "${SDL_INCLUDE_DIR}/SDL_version.h") file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$") file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$") file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$") string(REGEX REPLACE "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MAJOR "${SDL_VERSION_MAJOR_LINE}") string(REGEX REPLACE "^#define[ \t]+SDL_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MINOR "${SDL_VERSION_MINOR_LINE}") string(REGEX REPLACE "^#define[ \t]+SDL_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL_VERSION_PATCH "${SDL_VERSION_PATCH_LINE}") set(SDL_VERSION_STRING ${SDL_VERSION_MAJOR}.${SDL_VERSION_MINOR}.${SDL_VERSION_PATCH}) unset(SDL_VERSION_MAJOR_LINE) unset(SDL_VERSION_MINOR_LINE) unset(SDL_VERSION_PATCH_LINE) unset(SDL_VERSION_MAJOR) unset(SDL_VERSION_MINOR) unset(SDL_VERSION_PATCH) endif() include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL REQUIRED_VARS SDL_LIBRARY SDL_INCLUDE_DIR VERSION_VAR SDL_VERSION_STRING)
