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#.rst:
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# FindSDL
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# -------
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#
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# Locate SDL library
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#
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# This module defines
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#
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# ::
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#
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# SDL_FOUND, if false, do not try to link to SDL
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# SDL_LIBRARY, the name(s) of the library(ies) to link against
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# SDL_LIBSDL, the full path and name of libSDL (or SDL.[lib|dll].
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# SDL_LIBSDLMAIN, full path and name of libSDLmain (or SDLmain.lib).
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# SDL_LIBRARY_PATH, the full path to the found libSDL
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# SDL_INCLUDE_DIR, where to find SDL.h
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# SDL_VERSION_STRING, human-readable string containing the version of SDL
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#
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#
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#
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# This module responds to the flag:
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#
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# ::
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#
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# SDL_BUILDING_LIBRARY
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# If this is defined, then no SDL_main will be linked in because
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# only applications need main().
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# Otherwise, it is assumed you are building an application and this
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# module will attempt to locate and set the proper link flags
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# as part of the returned SDL_LIBRARY variable.
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#
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#
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#
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# Don't forget to include SDLmain.h and SDLmain.m your project for the
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# OS X framework based version. (Other versions link to -lSDLmain which
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# this module will try to find on your behalf.) Also for OS X, this
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# module will automatically add the -framework Cocoa on your behalf.
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#
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#
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#
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# Additional Note: If you see an empty SDL_LIBSDL in your
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# configuration and no SDL_LIBRARY, it means CMake did not find your SDL
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# library (SDL.dll, libsdl.so, SDL.framework, etc). Set
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# SDL_LIBSDL to point to your SDL library, and configure again.
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# Similarly, if you see an empty SDL_LIBSDLMAIN, you should set this
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# value as appropriate. These values are used to generate the final
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# SDL_LIBRARY variable, but when these values are unset, SDL_LIBRARY
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# does not get created.
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#
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#
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#
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# $SDLDIR is an environment variable that would correspond to the
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# ./configure --prefix=$SDLDIR used in building SDL. l.e.galup 9-20-02
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#
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# Modified by Eric Wing. Added code to assist with automated building
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# by using environmental variables and providing a more
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# controlled/consistent search behavior. Added new modifications to
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# recognize OS X frameworks and additional Unix paths (FreeBSD, etc).
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# Also corrected the header search path to follow "proper" SDL
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# guidelines. Added a search for SDLmain which is needed by some
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# platforms. Added a search for threads which is needed by some
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# platforms. Added needed compile switches for MinGW.
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#
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# On OSX, this will prefer the Framework version (if found) over others.
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# People will have to manually change the cache values of SDL_LIBRARY to
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# override this selection or set the CMake environment
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# CMAKE_INCLUDE_PATH to modify the search paths.
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#
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# Note that the header path has changed from SDL/SDL.h to just SDL.h
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# This needed to change because "proper" SDL convention is #include
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# "SDL.h", not <SDL/SDL.h>. This is done for portability reasons
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# because not all systems place things in SDL/ (see FreeBSD).
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#
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# Modified for OpenTx by Maxim Paperno 19-Dec-2016
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# Added SDL_LIBSDL, SDL_LIBSDLMAIN & SDL_LIBRARY_PATH, removed SDLMAIN_LIBRARY,
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# SDL_LIBRARY_TEMP, and fixed bug with recursive appending of supporting
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# libraries to cached SDL_LIBRARY_TEMP variable.
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#
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#=============================================================================
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#CMake - Cross Platform Makefile Generator
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#Copyright 2000-2015 Kitware, Inc.
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#Copyright 2000-2011 Insight Software Consortium
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#All rights reserved.
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#
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#Redistribution and use in source and binary forms, with or without
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#modification, are permitted provided that the following conditions
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#are met:
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#
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#* Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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#* Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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#* Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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#SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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#LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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#THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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#(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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#OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#------------------------------------------------------------------------------
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#
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#The above copyright and license notice applies to distributions of
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#CMake in source and binary form. Some source files contain additional
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#notices of original copyright by their contributors; see each source
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#for details. Third-party software packages supplied with CMake under
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#compatible licenses provide their own copyright notices documented in
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#corresponding subdirectories.
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#
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#------------------------------------------------------------------------------
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#
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#CMake was initially developed by Kitware with the following sponsorship:
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#
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# * National Library of Medicine at the National Institutes of Health
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# as part of the Insight Segmentation and Registration Toolkit (ITK).
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#
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# * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
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# Visualization Initiative.
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#
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# * National Alliance for Medical Image Computing (NAMIC) is funded by the
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# National Institutes of Health through the NIH Roadmap for Medical Research,
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# Grant U54 EB005149.
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#
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# * Kitware, Inc.
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#=============================================================================
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find_path(SDL_INCLUDE_DIR SDL.h
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HINTS
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ENV SDLDIR
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PATH_SUFFIXES SDL SDL12 SDL11
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# path suffixes to search inside ENV{SDLDIR}
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include/SDL include/SDL12 include/SDL11 include
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)
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(VC_LIB_PATH_SUFFIX lib/x64)
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else()
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set(VC_LIB_PATH_SUFFIX lib/x86)
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endif()
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# SDL-1.1 is the name used by FreeBSD ports...
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# don't confuse it for the version number.
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find_library(SDL_LIBSDL
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NAMES SDL SDL-1.1
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HINTS
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ENV SDLDIR
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PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
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)
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# Non-OS X framework versions expect you to also dynamically link to
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# SDLmain. This is mainly for Windows and OS X. Other (Unix) platforms
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# seem to provide SDLmain for compatibility even though they don't
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# necessarily need it.
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find_library(SDL_LIBSDLMAIN
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NAMES SDLmain SDLmain-1.1
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HINTS
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ENV SDLDIR
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PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
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PATHS
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/sw
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/opt/local
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/opt/csw
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/opt
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)
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# SDL may require threads on your system.
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# The Apple build may not need an explicit flag because one of the
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# frameworks may already provide it.
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# But for non-OSX systems, I will use the CMake Threads package.
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if(NOT APPLE)
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find_package(Threads)
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endif()
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# MinGW needs an additional library, mwindows
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# It's total link flags should look like -lmingw32 -lSDLmain -lSDL
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if(MINGW)
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set(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW")
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endif()
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if(SDL_LIBSDL)
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# For SDLmain
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if(SDL_LIBSDLMAIN AND NOT SDL_BUILDING_LIBRARY AND NOT SDL_INCLUDE_DIR MATCHES ".framework")
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list(FIND SDL_LIBSDL "${SDL_LIBSDLMAIN}" _SDL_MAIN_INDEX)
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if(_SDL_MAIN_INDEX EQUAL -1)
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list(APPEND _SDL_LIBRARY_TEMP "${SDL_LIBSDLMAIN}")
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endif()
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unset(_SDL_MAIN_INDEX)
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endif()
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list(APPEND _SDL_LIBRARY_TEMP "${SDL_LIBSDL}")
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# For OS X, SDL uses Cocoa as a backend so it must link to Cocoa.
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# CMake doesn't display the -framework Cocoa string in the UI even
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# though it actually is there if I modify a pre-used variable.
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# I think it has something to do with the CACHE STRING.
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# So I use a temporary variable until the end so I can set the
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# "real" variable in one-shot.
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if(APPLE)
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list(APPEND _SDL_LIBRARY_TEMP "-framework Cocoa")
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endif()
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if(Threads_FOUND)
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list(APPEND _SDL_LIBRARY_TEMP ${CMAKE_THREAD_LIBS_INIT})
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endif()
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# MinGW needs an additional library, mwindows
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# It's total link flags should look like -lmingw32 -lSDLmain -lSDL
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if(MINGW)
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list(INSERT 0 _SDL_LIBRARY_TEMP mingw32)
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endif()
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# Set the final string here so the GUI reflects the final state.
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set(SDL_LIBRARY ${_SDL_LIBRARY_TEMP} CACHE STRING "Full list of required SDL & supporting libraries.")
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unset(_SDL_LIBRARY_TEMP)
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get_filename_component(_SDL_LIBRARY_TEMP ${SDL_LIBSDL} PATH)
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set(SDL_LIBRARY_PATH ${_SDL_LIBRARY_TEMP} CACHE PATH "Path to SDL library.")
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unset(_SDL_LIBRARY_TEMP)
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endif()
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if(SDL_INCLUDE_DIR AND EXISTS "${SDL_INCLUDE_DIR}/SDL_version.h")
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file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+[0-9]+$")
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file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MINOR_VERSION[ \t]+[0-9]+$")
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file(STRINGS "${SDL_INCLUDE_DIR}/SDL_version.h" SDL_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_PATCHLEVEL[ \t]+[0-9]+$")
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string(REGEX REPLACE "^#define[ \t]+SDL_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MAJOR "${SDL_VERSION_MAJOR_LINE}")
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string(REGEX REPLACE "^#define[ \t]+SDL_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL_VERSION_MINOR "${SDL_VERSION_MINOR_LINE}")
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string(REGEX REPLACE "^#define[ \t]+SDL_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL_VERSION_PATCH "${SDL_VERSION_PATCH_LINE}")
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set(SDL_VERSION_STRING ${SDL_VERSION_MAJOR}.${SDL_VERSION_MINOR}.${SDL_VERSION_PATCH})
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unset(SDL_VERSION_MAJOR_LINE)
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unset(SDL_VERSION_MINOR_LINE)
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unset(SDL_VERSION_PATCH_LINE)
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unset(SDL_VERSION_MAJOR)
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unset(SDL_VERSION_MINOR)
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unset(SDL_VERSION_PATCH)
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endif()
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL
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REQUIRED_VARS SDL_LIBRARY SDL_LIBRARY_PATH SDL_INCLUDE_DIR
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VERSION_VAR SDL_VERSION_STRING)
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