diff options
Diffstat (limited to 'Modules/FindSDL.cmake')
| -rw-r--r-- | Modules/FindSDL.cmake | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/Modules/FindSDL.cmake b/Modules/FindSDL.cmake new file mode 100644 index 000000000..1c04726ea --- /dev/null +++ b/Modules/FindSDL.cmake @@ -0,0 +1,173 @@ +# 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 +# +# 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. +# +# 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 + PATHS + ~/Library/Frameworks + /Library/Frameworks + /usr/local/include/SDL12 + /usr/local/include/SDL11 # FreeBSD ports + /usr/include/SDL12 + /usr/include/SDL11 + /sw # Fink + /opt/local # DarwinPorts + /opt/csw # Blastwave + /opt +) + +# 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 lib64 lib + PATHS + /sw + /opt/local + /opt/csw + /opt +) + +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 lib64 lib + PATHS + /sw + /opt/local + /opt/csw + /opt + ) + ENDIF(NOT ${SDL_INCLUDE_DIR} MATCHES ".framework") +ENDIF(NOT SDL_BUILDING_LIBRARY) + +# 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(NOT APPLE) + +# 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(MINGW) + +IF(SDL_LIBRARY_TEMP) + # For SDLmain + IF(NOT SDL_BUILDING_LIBRARY) + IF(SDLMAIN_LIBRARY) + SET(SDL_LIBRARY_TEMP ${SDLMAIN_LIBRARY} ${SDL_LIBRARY_TEMP}) + ENDIF(SDLMAIN_LIBRARY) + ENDIF(NOT SDL_BUILDING_LIBRARY) + + # 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(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(SDL_LIBRARY_TEMP ${SDL_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT}) + ENDIF(NOT APPLE) + + # For MinGW library + IF(MINGW) + SET(SDL_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL_LIBRARY_TEMP}) + ENDIF(MINGW) + + # 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(SDL_LIBRARY_TEMP) + +INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) + +FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL + REQUIRED_VARS SDL_LIBRARY SDL_INCLUDE_DIR) |