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1.1 ! root 1: # Locate SDL2 library ! 2: # This module defines ! 3: # SDL2_LIBRARY, the name of the library to link against ! 4: # SDL2_FOUND, if false, do not try to link to SDL2 ! 5: # SDL2_INCLUDE_DIR, where to find SDL.h ! 6: # ! 7: # This module responds to the the flag: ! 8: # SDL2_BUILDING_LIBRARY ! 9: # If this is defined, then no SDL2main will be linked in because ! 10: # only applications need main(). ! 11: # Otherwise, it is assumed you are building an application and this ! 12: # module will attempt to locate and set the the proper link flags ! 13: # as part of the returned SDL2_LIBRARY variable. ! 14: # ! 15: # Don't forget to include SDLmain.h and SDLmain.m your project for the ! 16: # OS X framework based version. (Other versions link to -lSDL2main which ! 17: # this module will try to find on your behalf.) Also for OS X, this ! 18: # module will automatically add the -framework Cocoa on your behalf. ! 19: # ! 20: # ! 21: # Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration ! 22: # and no SDL2_LIBRARY, it means CMake did not find your SDL2 library ! 23: # (SDL2.dll, libsdl2.so, SDL2.framework, etc). ! 24: # Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again. ! 25: # Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value ! 26: # as appropriate. These values are used to generate the final SDL2_LIBRARY ! 27: # variable, but when these values are unset, SDL2_LIBRARY does not get created. ! 28: # ! 29: # ! 30: # $SDL2DIR is an environment variable that would ! 31: # correspond to the ./configure --prefix=$SDL2DIR ! 32: # used in building SDL2. ! 33: # l.e.galup 9-20-02 ! 34: # ! 35: # Modified by Eric Wing. ! 36: # Added code to assist with automated building by using environmental variables ! 37: # and providing a more controlled/consistent search behavior. ! 38: # Added new modifications to recognize OS X frameworks and ! 39: # additional Unix paths (FreeBSD, etc). ! 40: # Also corrected the header search path to follow "proper" SDL guidelines. ! 41: # Added a search for SDL2main which is needed by some platforms. ! 42: # Added a search for threads which is needed by some platforms. ! 43: # Added needed compile switches for MinGW. ! 44: # ! 45: # On OSX, this will prefer the Framework version (if found) over others. ! 46: # People will have to manually change the cache values of ! 47: # SDL2_LIBRARY to override this selection or set the CMake environment ! 48: # CMAKE_INCLUDE_PATH to modify the search paths. ! 49: # ! 50: # Note that the header path has changed from SDL2/SDL.h to just SDL.h ! 51: # This needed to change because "proper" SDL convention ! 52: # is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability ! 53: # reasons because not all systems place things in SDL2/ (see FreeBSD). ! 54: ! 55: #============================================================================= ! 56: # Copyright 2003-2009 Kitware, Inc. ! 57: # ! 58: # Distributed under the OSI-approved BSD License (the "License"); ! 59: # see http://www.cmake.org/cmake/project/license.html for details. ! 60: # ! 61: # This software is distributed WITHOUT ANY WARRANTY; without even the ! 62: # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ! 63: # See the License for more information. ! 64: #============================================================================= ! 65: ! 66: SET(SDL2_SEARCH_PATHS ! 67: ~/Library/Frameworks ! 68: /Library/Frameworks ! 69: /usr/local ! 70: /usr ! 71: /sw # Fink ! 72: /opt/local # DarwinPorts ! 73: /opt/csw # Blastwave ! 74: /opt ! 75: ) ! 76: ! 77: FIND_PATH(SDL2_INCLUDE_DIR SDL_scancode.h ! 78: HINTS ! 79: $ENV{SDL2DIR} ! 80: PATH_SUFFIXES include/SDL2 include ! 81: PATHS ${SDL2_SEARCH_PATHS} ! 82: ) ! 83: ! 84: FIND_LIBRARY(SDL2_LIBRARY_TEMP ! 85: NAMES SDL2 ! 86: HINTS ! 87: $ENV{SDL2DIR} ! 88: PATH_SUFFIXES lib64 lib ! 89: PATHS ${SDL2_SEARCH_PATHS} ! 90: ) ! 91: ! 92: IF(NOT SDL2_BUILDING_LIBRARY) ! 93: IF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework") ! 94: # Non-OS X framework versions expect you to also dynamically link to ! 95: # SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms ! 96: # seem to provide SDL2main for compatibility even though they don't ! 97: # necessarily need it. ! 98: FIND_LIBRARY(SDL2MAIN_LIBRARY ! 99: NAMES SDL2main ! 100: HINTS ! 101: $ENV{SDL2DIR} ! 102: PATH_SUFFIXES lib64 lib ! 103: PATHS ${SDL2_SEARCH_PATHS} ! 104: ) ! 105: ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework") ! 106: ENDIF(NOT SDL2_BUILDING_LIBRARY) ! 107: ! 108: # SDL2 may require threads on your system. ! 109: # The Apple build may not need an explicit flag because one of the ! 110: # frameworks may already provide it. ! 111: # But for non-OSX systems, I will use the CMake Threads package. ! 112: IF(NOT APPLE) ! 113: FIND_PACKAGE(Threads) ! 114: ENDIF(NOT APPLE) ! 115: ! 116: # MinGW needs an additional library, mwindows ! 117: # It's total link flags should look like -lmingw32 -lSDL2main -lSDL2 -lmwindows ! 118: # (Actually on second look, I think it only needs one of the m* libraries.) ! 119: IF(MINGW) ! 120: SET(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW") ! 121: ENDIF(MINGW) ! 122: ! 123: IF(SDL2_LIBRARY_TEMP) ! 124: # For SDL2main ! 125: IF(NOT SDL2_BUILDING_LIBRARY) ! 126: IF(SDL2MAIN_LIBRARY) ! 127: SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP}) ! 128: ENDIF(SDL2MAIN_LIBRARY) ! 129: ENDIF(NOT SDL2_BUILDING_LIBRARY) ! 130: ! 131: # For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa. ! 132: # CMake doesn't display the -framework Cocoa string in the UI even ! 133: # though it actually is there if I modify a pre-used variable. ! 134: # I think it has something to do with the CACHE STRING. ! 135: # So I use a temporary variable until the end so I can set the ! 136: # "real" variable in one-shot. ! 137: IF(APPLE) ! 138: SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa") ! 139: ENDIF(APPLE) ! 140: ! 141: # For threads, as mentioned Apple doesn't need this. ! 142: # In fact, there seems to be a problem if I used the Threads package ! 143: # and try using this line, so I'm just skipping it entirely for OS X. ! 144: IF(NOT APPLE) ! 145: SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT}) ! 146: ENDIF(NOT APPLE) ! 147: ! 148: # For MinGW library ! 149: IF(MINGW) ! 150: SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP}) ! 151: ENDIF(MINGW) ! 152: ! 153: # Set the final string here so the GUI reflects the final state. ! 154: SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found") ! 155: # Set the temp variable to INTERNAL so it is not seen in the CMake GUI ! 156: SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "") ! 157: ENDIF(SDL2_LIBRARY_TEMP) ! 158: ! 159: if(SDL2_INCLUDE_DIR AND EXISTS "${SDL2_INCLUDE_DIR}/SDL_version.h") ! 160: file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$") ! 161: file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$") ! 162: file(STRINGS "${SDL2_INCLUDE_DIR}/SDL_version.h" SDL2_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$") ! 163: string(REGEX REPLACE "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_MAJOR "${SDL2_VERSION_MAJOR_LINE}") ! 164: string(REGEX REPLACE "^#define[ \t]+SDL_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_MINOR "${SDL2_VERSION_MINOR_LINE}") ! 165: string(REGEX REPLACE "^#define[ \t]+SDL_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_VERSION_PATCH "${SDL2_VERSION_PATCH_LINE}") ! 166: set(SDL2_VERSION_STRING ${SDL2_VERSION_MAJOR}.${SDL2_VERSION_MINOR}.${SDL2_VERSION_PATCH}) ! 167: unset(SDL2_VERSION_MAJOR_LINE) ! 168: unset(SDL2_VERSION_MINOR_LINE) ! 169: unset(SDL2_VERSION_PATCH_LINE) ! 170: unset(SDL2_VERSION_MAJOR) ! 171: unset(SDL2_VERSION_MINOR) ! 172: unset(SDL2_VERSION_PATCH) ! 173: endif() ! 174: ! 175: INCLUDE(FindPackageHandleStandardArgs) ! 176: ! 177: FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)
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