Differential D2716 Diff 9118 extern/audaspace/cmake/FindSDL2.cmake

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extern/audaspace/cmake/FindSDL2.cmake

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				# 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.
				#
				#
				# $SDL2 is an environment variable that would
				# correspond to the ./configure --prefix=$SDL2
				# 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.
				#
				# Note that on windows this will only search for the 32bit libraries, to search
				# for 64bit change x86/i686-w64 to x64/x86_64-w64

				#=============================================================================
				# Copyright 2003-2009 Kitware, Inc.
				#
				# CMake - Cross Platform Makefile Generator
				# Copyright 2000-2014 Kitware, Inc.
				# Copyright 2000-2011 Insight Software Consortium
				# All rights reserved.
				#
				# Redistribution and use in source and binary forms, with or without
				# modification, are permitted provided that the following conditions
				# are met:
				#
				# * Redistributions of source code must retain the above copyright
				# notice, this list of conditions and the following disclaimer.
				#
				# * Redistributions in binary form must reproduce the above copyright
				# notice, this list of conditions and the following disclaimer in the
				# documentation and/or other materials provided with the distribution.
				#
				# * Neither the names of Kitware, Inc., the Insight Software Consortium,
				# nor the names of their contributors may be used to endorse or promote
				# products derived from this software without specific prior written
				# permission.
				#
				# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
				# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
				# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
				# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
				# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
				# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
				# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
				# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
				# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
				# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
				# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
				#
				# 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
				${SDL2}
				$ENV{SDL2}
				PATH_SUFFIXES include/SDL2 include SDL2
				i686-w64-mingw32/include/SDL2
				x86_64-w64-mingw32/include/SDL2
				PATHS
				~/Library/Frameworks
				/Library/Frameworks
				/usr/local/include/SDL2
				/usr/include/SDL2
				/sw # Fink
				/opt/local # DarwinPorts
				/opt/csw # Blastwave
				/opt
				)

				# Lookup the 64 bit libs on x64
				IF(CMAKE_SIZEOF_VOID_P EQUAL 8)
				FIND_LIBRARY(SDL2_LIBRARY_TEMP SDL2
				HINTS
				${SDL2}
				$ENV{SDL2}
				PATH_SUFFIXES lib64 lib
				lib/x64
				x86_64-w64-mingw32/lib
				PATHS
				/sw
				/opt/local
				/opt/csw
				/opt
				)
				# On 32bit build find the 32bit libs
				ELSE(CMAKE_SIZEOF_VOID_P EQUAL 8)
				FIND_LIBRARY(SDL2_LIBRARY_TEMP SDL2
				HINTS
				${SDL2}
				$ENV{SDL2}
				PATH_SUFFIXES lib
				lib/x86
				i686-w64-mingw32/lib
				PATHS
				/sw
				/opt/local
				/opt/csw
				/opt
				)
				ENDIF(CMAKE_SIZEOF_VOID_P EQUAL 8)

				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.
				# Lookup the 64 bit libs on x64
				IF(CMAKE_SIZEOF_VOID_P EQUAL 8)
				FIND_LIBRARY(SDL2MAIN_LIBRARY
				NAMES SDL2main
				HINTS
				${SDL2}
				$ENV{SDL2}
				PATH_SUFFIXES lib64 lib
				lib/x64
				x86_64-w64-mingw32/lib
				PATHS
				/sw
				/opt/local
				/opt/csw
				/opt
				)
				# On 32bit build find the 32bit libs
				ELSE(CMAKE_SIZEOF_VOID_P EQUAL 8)
				FIND_LIBRARY(SDL2MAIN_LIBRARY
				NAMES SDL2main
				HINTS
				${SDL2}
				$ENV{SDL2}
				PATH_SUFFIXES lib
				lib/x86
				i686-w64-mingw32/lib
				PATHS
				/sw
				/opt/local
				/opt/csw
				/opt
				)
				ENDIF(CMAKE_SIZEOF_VOID_P EQUAL 8)
				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)

				# 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)