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authorChris Robinson <[email protected]>2014-05-23 12:14:51 -0700
committerChris Robinson <[email protected]>2014-05-23 12:14:51 -0700
commit13eac2552e8df0e0a4d5e2012497d4076a365661 (patch)
tree82e051ed09211a2718ec692c08d8e19330a9fb54 /cmake/FindSDL2.cmake
parent5ef5d218c40f36c20f1971d2fc6af101ed00d756 (diff)
Update the examples to use SDL2
This should make it easier to build the examples on 64-bit, where there are no premade dev libs for SDL1 on 64-bit mingw. FindSDL_sound.cmake has been updated to accept SDL or SDL2.
Diffstat (limited to 'cmake/FindSDL2.cmake')
-rw-r--r--cmake/FindSDL2.cmake193
1 files changed, 193 insertions, 0 deletions
diff --git a/cmake/FindSDL2.cmake b/cmake/FindSDL2.cmake
new file mode 100644
index 00000000..70e607a8
--- /dev/null
+++ b/cmake/FindSDL2.cmake
@@ -0,0 +1,193 @@
+# Locate SDL2 library
+# This module defines
+# SDL2_LIBRARY, the name of the library to link against
+# SDL2_FOUND, if false, do not try to link to SDL2
+# SDL2_INCLUDE_DIR, where to find SDL.h
+#
+# This module responds to the the flag:
+# SDL2_BUILDING_LIBRARY
+# If this is defined, then no SDL2_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 SDL2_LIBRARY variable.
+#
+# Don't forget to include SDL2main.h and SDL2main.m your project for the
+# OS X framework based version. (Other versions link to -lSDL2main 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 SDL2_LIBRARY_TEMP in your configuration
+# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library
+# (SDL2.dll, libsdl2.so, SDL2.framework, etc).
+# Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again.
+# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value
+# as appropriate. These values are used to generate the final SDL2_LIBRARY
+# variable, but when these values are unset, SDL2_LIBRARY does not get created.
+#
+#
+# $SDL2DIR is an environment variable that would
+# correspond to the ./configure --prefix=$SDL2DIR
+# used in building SDL2.
+# 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" SDL2 guidelines.
+# Added a search for SDL2main 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
+# SDL2_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 SDL2/SDL.h to just SDL.h
+# This needed to change because "proper" SDL2 convention
+# is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability
+# reasons because not all systems place things in SDL2/ (see FreeBSD).
+#
+# Ported by Johnny Patterson. This is a literal port for SDL2 of the FindSDL.cmake
+# module with the minor edit of changing "SDL" to "SDL2" where necessary. This
+# was not created for redistribution, and exists temporarily pending official
+# SDL2 CMake modules.
+
+#=============================================================================
+# 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(SDL2_INCLUDE_DIR SDL.h
+ HINTS
+ $ENV{SDL2DIR}
+ PATH_SUFFIXES include/SDL2 include
+ PATHS
+ ~/Library/Frameworks
+ /Library/Frameworks
+ /usr/local/include/SDL2
+ /usr/include/SDL2
+ /sw # Fink
+ /opt/local # DarwinPorts
+ /opt/csw # Blastwave
+ /opt
+)
+#MESSAGE("SDL2_INCLUDE_DIR is ${SDL2_INCLUDE_DIR}")
+
+FIND_LIBRARY(SDL2_LIBRARY_TEMP
+ NAMES SDL2
+ HINTS
+ $ENV{SDL2DIR}
+ PATH_SUFFIXES lib64 lib
+ PATHS
+ /sw
+ /opt/local
+ /opt/csw
+ /opt
+)
+
+#MESSAGE("SDL2_LIBRARY_TEMP is ${SDL2_LIBRARY_TEMP}")
+
+IF(NOT SDL2_BUILDING_LIBRARY)
+ IF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
+ # Non-OS X framework versions expect you to also dynamically link to
+ # SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms
+ # seem to provide SDL2main for compatibility even though they don't
+ # necessarily need it.
+ FIND_LIBRARY(SDL2MAIN_LIBRARY
+ NAMES SDL2main
+ HINTS
+ $ENV{SDL2DIR}
+ PATH_SUFFIXES lib64 lib
+ PATHS
+ /sw
+ /opt/local
+ /opt/csw
+ /opt
+ )
+ ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
+ENDIF(NOT SDL2_BUILDING_LIBRARY)
+
+# SDL2 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 -lSDL2main -lSDL2 -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(SDL2_FOUND "NO")
+IF(SDL2_LIBRARY_TEMP)
+ # For SDL2main
+ IF(NOT SDL2_BUILDING_LIBRARY)
+ IF(SDL2MAIN_LIBRARY)
+ SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP})
+ ENDIF(SDL2MAIN_LIBRARY)
+ ENDIF(NOT SDL2_BUILDING_LIBRARY)
+
+ # For OS X, SDL2 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(SDL2_LIBRARY_TEMP ${SDL2_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(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
+ ENDIF(NOT APPLE)
+
+ # For MinGW library
+ IF(MINGW)
+ SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
+ ENDIF(MINGW)
+
+ IF(WIN32)
+ SET(SDL2_LIBRARY_TEMP winmm imm32 version msimg32 ${SDL2_LIBRARY_TEMP})
+ ENDIF(WIN32)
+
+ # Set the final string here so the GUI reflects the final state.
+ SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found")
+ # Set the temp variable to INTERNAL so it is not seen in the CMake GUI
+ SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
+
+ SET(SDL2_FOUND "YES")
+ENDIF(SDL2_LIBRARY_TEMP)
+
+INCLUDE(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2
+ REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)
+
+IF(SDL2_STATIC)
+ if (UNIX AND NOT APPLE)
+ EXECUTE_PROCESS(COMMAND sdl2-config --static-libs OUTPUT_VARIABLE SDL2_LINK_FLAGS)
+ STRING(REGEX REPLACE "(\r?\n)+$" "" SDL2_LINK_FLAGS "${SDL2_LINK_FLAGS}")
+ SET(SDL2_LIBRARY ${SDL2_LINK_FLAGS})
+ ENDIF()
+ENDIF(SDL2_STATIC)