cmake_modules/FindSDL2_mixer.cmake
author Wuzzy <almikes@aol.com>
Tue, 26 Sep 2017 20:00:30 +0200
changeset 12540 1171c08fec1c
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permissions -rw-r--r--
Add ca. 10 announcer messages Shout-out to UltiMaxKom
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# - Locate SDL2_mixer library
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# This module defines:
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#  SDL2_MIXER_LIBRARIES, the name of the library to link against
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#  SDL2_MIXER_INCLUDE_DIRS, where to find the headers
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#  SDL2_MIXER_FOUND, if false, do not try to link against
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#  SDL2_MIXER_VERSION_STRING - human-readable string containing the version of SDL2_mixer
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#
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# For backward compatiblity the following variables are also set:
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#  SDL2MIXER_LIBRARY (same value as SDL2_MIXER_LIBRARIES)
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#  SDL2MIXER_INCLUDE_DIR (same value as SDL2_MIXER_INCLUDE_DIRS)
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#  SDL2MIXER_FOUND (same value as SDL2_MIXER_FOUND)
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#
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# $SDL2DIR is an environment variable that would
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# correspond to the ./configure --prefix=$SDL2DIR
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# used in building SDL2.
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#
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# Created by Eric Wing. This was influenced by the FindSDL2.cmake
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# module, but with modifications to recognize OS X frameworks and
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# additional Unix paths (FreeBSD, etc).
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#=============================================================================
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# Copyright 2005-2009 Kitware, Inc.
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# Copyright 2012 Benjamin Eikel
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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#  License text for the above reference.)
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if(NOT SDL2_MIXER_INCLUDE_DIR AND SDL2MIXER_INCLUDE_DIR)
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  set(SDL2_MIXER_INCLUDE_DIR ${SDL2MIXER_INCLUDE_DIR} CACHE PATH "directory cache entry initialized from old variable name")
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endif()
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find_path(SDL2_MIXER_INCLUDE_DIR SDL_mixer.h
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  HINTS
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    ENV SDL2MIXERDIR
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    ENV SDL2DIR
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  PATH_SUFFIXES include/SDL2 include
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)
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if(NOT SDL2_MIXER_LIBRARY AND SDL2MIXER_LIBRARY)
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  set(SDL2_MIXER_LIBRARY ${SDL2MIXER_LIBRARY} CACHE FILEPATH "file cache entry
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initialized from old variable name")
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endif()
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find_library(SDL2_MIXER_LIBRARY
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  NAMES SDL2_mixer
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  HINTS
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    ENV SDL2MIXERDIR
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    ENV SDL2DIR
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  PATH_SUFFIXES lib
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)
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if(SDL2_MIXER_INCLUDE_DIR AND EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h")
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  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+[0-9]+$")
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  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+[0-9]+$")
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  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+[0-9]+$")
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  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MAJOR "${SDL2_MIXER_VERSION_MAJOR_LINE}")
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  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MINOR "${SDL2_MIXER_VERSION_MINOR_LINE}")
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  string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_PATCH "${SDL2_MIXER_VERSION_PATCH_LINE}")
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  set(SDL2_MIXER_VERSION_STRING ${SDL2_MIXER_VERSION_MAJOR}.${SDL2_MIXER_VERSION_MINOR}.${SDL2_MIXER_VERSION_PATCH})
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  unset(SDL2_MIXER_VERSION_MAJOR_LINE)
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  unset(SDL2_MIXER_VERSION_MINOR_LINE)
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  unset(SDL2_MIXER_VERSION_PATCH_LINE)
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  unset(SDL2_MIXER_VERSION_MAJOR)
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  unset(SDL2_MIXER_VERSION_MINOR)
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  unset(SDL2_MIXER_VERSION_PATCH)
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endif()
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set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY})
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set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR})
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if(BUILD_ENGINE_JS)
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    set(SDL2_MIXER_LIBRARY "sdl2_mixer_emscripten_internal")
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    set(SDL2_MIXER_LIBRARIES "sdl2_mixer_emscripten_internal")
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    set(SDL2_MIXER_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
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endif()
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer
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                                  REQUIRED_VARS SDL2_MIXER_LIBRARIES SDL2_MIXER_INCLUDE_DIRS
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                                  VERSION_VAR SDL2_MIXER_VERSION_STRING)
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# for backward compatiblity
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set(SDLMIXER_LIBRARY ${SDL2_MIXER_LIBRARIES})
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set(SDLMIXER_INCLUDE_DIR ${SDL2_MIXER_INCLUDE_DIRS})
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set(SDLMIXER_FOUND ${SDL2_MIXER_FOUND})
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mark_as_advanced(SDL2_MIXER_LIBRARY SDL2_MIXER_INCLUDE_DIR)