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# 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
#
# 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
# though it is not necessarily visible in the UI. (Maybe somebody else
# can fix this.)
#
# $SDLDIR is an environment variable that would
# correspond to the ./configure --prefix=$SDLDIR
# used in building SDL.
# l.e.galup 9-20-02
#
# Modified by Eric Wing.
# Added 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.
#
# 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).
FIND_PATH(SDL_INCLUDE_DIR SDL.h
~/Library/Frameworks/SDL.framework/Headers
/Library/Frameworks/SDL.framework/Headers
$ENV{SDLDIR}/include
/usr/include/SDL
/usr/include/SDL12
/usr/include/SDL11
/usr/include
/usr/local/include/SDL
/usr/local/include/SDL12
/usr/local/include/SDL11
/usr/local/include
/sw/include
)
# I'm not sure if I should do a special casing for Apple. It is
# unlikely that other Unix systems will find the framework path.
# But if they do ([Next|Open|GNU]Step?),
# do they want the -framework option also?
IF(${SDL_INCLUDE_DIR} MATCHES ".framework")
# The Cocoa framework must be linked into SDL because SDL is Cocoa based.
# Remember that the OS X framework version expects you to drop in
# SDLmain.h and SDLmain.m directly into your project.
# (Cocoa link moved to bottom of this script.)
# SET (SDL_LIBRARY "-framework SDL -framework Cocoa" CACHE STRING "SDL framework for OSX")
SET(SDL_LIBRARY "-framework SDL" CACHE STRING "SDL framework for OSX")
ELSE(${SDL_INCLUDE_DIR} MATCHES ".framework")
# SDL-1.1 is the name used by FreeBSD ports...
# don't confuse it for the version number.
FIND_LIBRARY(SDL_LIBRARY
NAMES SDL SDL-1.1
PATHS
$ENV{SDLDIR}/lib
/usr/lib
/usr/local/lib
/sw/lib
)
# Non-OS X framework versions expect you to also dynamically link to
# SDLmain. This is mainly for Windows and OS X. Other platforms
# seem to provide SDLmain for compatibility even though they don't
# necessarily need it.
FIND_LIBRARY(SDLMAIN_LIBRARY
NAMES SDLmain
PATHS
$ENV{SDLDIR}/lib
/usr/lib
/usr/local/lib
/sw/lib
)
ENDIF(${SDL_INCLUDE_DIR} MATCHES ".framework")
# 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)
SET(SDL_FOUND "NO")
IF(SDL_LIBRARY)
# For SDLmain
IF(SDLMAIN_LIBRARY)
SET(SDL_LIBRARY ${SDLMAIN_LIBRARY} ${SDL_LIBRARY})
ENDIF(SDLMAIN_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. I think it has something to do
# with the CACHE STRING. Maybe somebody else knows how to fix this.
# The problem is mainly cosmetic, and not a functional issue.
IF(APPLE)
SET(SDL_LIBRARY ${SDL_LIBRARY} "-framework Cocoa")
ENDIF(APPLE)
# For threads, as mentioned Apple doesn't need this.
# In fact, there seems to be a problem if Find the threads package
# and try using this line, so I'm just skipping it entirely for OS X.
IF(NOT APPLE)
SET(SDL_LIBRARY ${SDL_LIBRARY} ${CMAKE_THREAD_LIBS_INIT})
ENDIF(NOT APPLE)
# For MinGW library
IF(MINGW)
SET(SDL_LIBRARY ${MINGW32_LIBRARY} ${SDL_LIBRARY})
ENDIF(MINGW)
SET(SDL_FOUND "YES")
ENDIF(SDL_LIBRARY)
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