Implement mp3/ogg Background Music Player using SDL2-mixer #725
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| # Distributed under the OSI-approved BSD 3-Clause License. See accompanying | ||
| # file Copyright.txt or https://cmake.org/licensing for details. | ||
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| # Copyright 2019 Amine Ben Hassouna <amine.benhassouna@gmail.com> | ||
| # Copyright 2000-2019 Kitware, Inc. and Contributors | ||
| # All rights reserved. | ||
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| # Redistribution and use in source and binary forms, with or without | ||
| # modification, are permitted provided that the following conditions | ||
| # are met: | ||
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| # * Redistributions of source code must retain the above copyright | ||
| # notice, this list of conditions and the following disclaimer. | ||
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| # * 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. | ||
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| # * Neither the name of Kitware, Inc. nor the names of Contributors | ||
| # may be used to endorse or promote products derived from this | ||
| # software without specific prior written permission. | ||
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| # 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. | ||
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| #[=======================================================================[.rst: | ||
| FindSDL2_mixer | ||
| -------------- | ||
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| Locate SDL2_mixer library | ||
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| This module defines the following 'IMPORTED' target: | ||
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| :: | ||
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| SDL2::Mixer | ||
| The SDL2_mixer library, if found. | ||
| Have SDL2::Core as a link dependency. | ||
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| This module will set the following variables in your project: | ||
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| :: | ||
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| SDL2_MIXER_LIBRARIES, the name of the library to link against | ||
| SDL2_MIXER_INCLUDE_DIRS, where to find the headers | ||
| SDL2_MIXER_FOUND, if false, do not try to link against | ||
| SDL2_MIXER_VERSION_STRING - human-readable string containing the | ||
| version of SDL2_mixer | ||
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| This module responds to the following cache variables: | ||
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| :: | ||
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| SDL2_MIXER_PATH | ||
| Set a custom SDL2_mixer Library path (default: empty) | ||
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| SDL2_MIXER_NO_DEFAULT_PATH | ||
| Disable search SDL2_mixer Library in default path. | ||
| If SDL2_MIXER_PATH (default: ON) | ||
| Else (default: OFF) | ||
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| SDL2_MIXER_INCLUDE_DIR | ||
| SDL2_mixer headers path. | ||
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| SDL2_MIXER_LIBRARY | ||
| SDL2_mixer Library (.dll, .so, .a, etc) path. | ||
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| Additional Note: If you see an empty SDL2_MIXER_LIBRARY in your project | ||
| configuration, it means CMake did not find your SDL2_mixer library | ||
| (SDL2_mixer.dll, libsdl2_mixer.so, etc). Set SDL2_MIXER_LIBRARY to point | ||
| to your SDL2_mixer library, and configure again. This value is used to | ||
| generate the final SDL2_MIXER_LIBRARIES variable and the SDL2::Mixer target, | ||
| but when this value is unset, SDL2_MIXER_LIBRARIES and SDL2::Mixer does not | ||
| get created. | ||
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| $SDL2MIXERDIR is an environment variable that would correspond to the | ||
| ./configure --prefix=$SDL2MIXERDIR used in building SDL2_mixer. | ||
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| $SDL2DIR is an environment variable that would correspond to the | ||
| ./configure --prefix=$SDL2DIR used in building SDL2. | ||
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| Created by Amine Ben Hassouna: | ||
| Adapt FindSDL_mixer.cmake to SDL2_mixer (FindSDL2_mixer.cmake). | ||
| Add cache variables for more flexibility: | ||
| SDL2_MIXER_PATH, SDL2_MIXER_NO_DEFAULT_PATH (for details, see doc above). | ||
| Add SDL2 as a required dependency. | ||
| Modernize the FindSDL2_mixer.cmake module by creating a specific target: | ||
| SDL2::Mixer (for details, see doc above). | ||
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| Original FindSDL_mixer.cmake module: | ||
| Created by Eric Wing. This was influenced by the FindSDL.cmake | ||
| module, but with modifications to recognize OS X frameworks and | ||
| additional Unix paths (FreeBSD, etc). | ||
| #]=======================================================================] | ||
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| # SDL2 Library required | ||
| find_package(SDL2 QUIET) | ||
| if(NOT SDL2_FOUND) | ||
| set(SDL2_MIXER_SDL2_NOT_FOUND "Could NOT find SDL2 (SDL2 is required by SDL2_mixer).") | ||
| if(SDL2_mixer_FIND_REQUIRED) | ||
| message(FATAL_ERROR ${SDL2_MIXER_SDL2_NOT_FOUND}) | ||
| else() | ||
| if(NOT SDL2_mixer_FIND_QUIETLY) | ||
| message(STATUS ${SDL2_MIXER_SDL2_NOT_FOUND}) | ||
| endif() | ||
| return() | ||
| endif() | ||
| unset(SDL2_MIXER_SDL2_NOT_FOUND) | ||
| endif() | ||
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| # Define options for searching SDL2_mixer Library in a custom path | ||
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| set(SDL2_MIXER_PATH "" CACHE STRING "Custom SDL2_mixer Library path") | ||
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| set(_SDL2_MIXER_NO_DEFAULT_PATH OFF) | ||
| if(SDL2_MIXER_PATH) | ||
| set(_SDL2_MIXER_NO_DEFAULT_PATH ON) | ||
| endif() | ||
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| set(SDL2_MIXER_NO_DEFAULT_PATH ${_SDL2_MIXER_NO_DEFAULT_PATH} | ||
| CACHE BOOL "Disable search SDL2_mixer Library in default path") | ||
| unset(_SDL2_MIXER_NO_DEFAULT_PATH) | ||
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| set(SDL2_MIXER_NO_DEFAULT_PATH_CMD) | ||
| if(SDL2_MIXER_NO_DEFAULT_PATH) | ||
| set(SDL2_MIXER_NO_DEFAULT_PATH_CMD NO_DEFAULT_PATH) | ||
| endif() | ||
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| # Search for the SDL2_mixer include directory | ||
| find_path(SDL2_MIXER_INCLUDE_DIR SDL_mixer.h | ||
| HINTS | ||
| ENV SDL2MIXERDIR | ||
| ENV SDL2DIR | ||
| ${SDL2_MIXER_NO_DEFAULT_PATH_CMD} | ||
| PATH_SUFFIXES SDL2 | ||
| # path suffixes to search inside ENV{SDL2DIR} | ||
| # and ENV{SDL2MIXERDIR} | ||
| include/SDL2 include | ||
| PATHS ${SDL2_MIXER_PATH} | ||
| DOC "Where the SDL2_mixer headers can be found" | ||
| ) | ||
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| if(CMAKE_SIZEOF_VOID_P EQUAL 8) | ||
| set(VC_LIB_PATH_SUFFIX lib/x64) | ||
| else() | ||
| set(VC_LIB_PATH_SUFFIX lib/x86) | ||
| endif() | ||
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| # Search for the SDL2_mixer library | ||
| find_library(SDL2_MIXER_LIBRARY | ||
| NAMES SDL2_mixer | ||
| HINTS | ||
| ENV SDL2MIXERDIR | ||
| ENV SDL2DIR | ||
| ${SDL2_MIXER_NO_DEFAULT_PATH_CMD} | ||
| PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX} | ||
| PATHS ${SDL2_MIXER_PATH} | ||
| DOC "Where the SDL2_mixer Library can be found" | ||
| ) | ||
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| # Read SDL2_mixer version | ||
| if(SDL2_MIXER_INCLUDE_DIR AND EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h") | ||
| file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+[0-9]+$") | ||
| file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+[0-9]+$") | ||
| file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+[0-9]+$") | ||
| string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MAJOR "${SDL2_MIXER_VERSION_MAJOR_LINE}") | ||
| string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MINOR "${SDL2_MIXER_VERSION_MINOR_LINE}") | ||
| string(REGEX REPLACE "^#define[ \t]+SDL_MIXER_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_PATCH "${SDL2_MIXER_VERSION_PATCH_LINE}") | ||
| set(SDL2_MIXER_VERSION_STRING ${SDL2_MIXER_VERSION_MAJOR}.${SDL2_MIXER_VERSION_MINOR}.${SDL2_MIXER_VERSION_PATCH}) | ||
| unset(SDL2_MIXER_VERSION_MAJOR_LINE) | ||
| unset(SDL2_MIXER_VERSION_MINOR_LINE) | ||
| unset(SDL2_MIXER_VERSION_PATCH_LINE) | ||
| unset(SDL2_MIXER_VERSION_MAJOR) | ||
| unset(SDL2_MIXER_VERSION_MINOR) | ||
| unset(SDL2_MIXER_VERSION_PATCH) | ||
| endif() | ||
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| set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY}) | ||
| set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR}) | ||
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| include(FindPackageHandleStandardArgs) | ||
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| FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer | ||
| REQUIRED_VARS SDL2_MIXER_LIBRARIES SDL2_MIXER_INCLUDE_DIRS | ||
| VERSION_VAR SDL2_MIXER_VERSION_STRING) | ||
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| mark_as_advanced(SDL2_MIXER_PATH | ||
| SDL2_MIXER_NO_DEFAULT_PATH | ||
| SDL2_MIXER_LIBRARY | ||
| SDL2_MIXER_INCLUDE_DIR) | ||
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| if(SDL2_MIXER_FOUND) | ||
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| # SDL2::Mixer target | ||
| if(SDL2_MIXER_LIBRARY AND NOT TARGET SDL2::Mixer) | ||
| add_library(SDL2::Mixer UNKNOWN IMPORTED) | ||
| set_target_properties(SDL2::Mixer PROPERTIES | ||
| IMPORTED_LOCATION "${SDL2_MIXER_LIBRARY}" | ||
| INTERFACE_INCLUDE_DIRECTORIES "${SDL2_MIXER_INCLUDE_DIR}" | ||
| INTERFACE_LINK_LIBRARIES SDL2::Core) | ||
| endif() | ||
| endif() |
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Why is the version changed?