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-rw-r--r--Modules/FindSDL.cmake129
1 files changed, 113 insertions, 16 deletions
diff --git a/Modules/FindSDL.cmake b/Modules/FindSDL.cmake
index d0a450f..24a7214 100644
--- a/Modules/FindSDL.cmake
+++ b/Modules/FindSDL.cmake
@@ -2,32 +2,129 @@
# 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/SDL.h
+# 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
-
-
-
-IF (UNIX)
-
- FIND_LIBRARY(SDL_LIBRARY SDL
+#
+# 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")
- FIND_PATH( SDL_INCLUDE_DIR SDL/SDL.h
- $ENV{SDLDIR}/include
- /usr/include
- /usr/local/include
- )
+# 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)
-ENDIF (UNIX)
+# 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" )
+SET(SDL_FOUND "NO")
IF(SDL_LIBRARY)
- SET( SDL_FOUND "YES" )
+ # 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)
+