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94 lines
3.6 KiB
94 lines
3.6 KiB
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindOpenAL
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----------
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Finds Open Audio Library (OpenAL).
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This module defines ``OPENAL_LIBRARY OPENAL_FOUND``, if
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false, do not try to link to OpenAL ``OPENAL_INCLUDE_DIR``, where to find
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the headers.
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``$OPENALDIR`` is an environment variable that would correspond to the
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``./configure --prefix=$OPENALDIR`` used in building OpenAL.
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Created by Eric Wing. This was influenced by the ``FindSDL.cmake``
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module.
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#]=======================================================================]
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# This makes the presumption that you are include al.h like
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# #include "al.h"
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# and not
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# #include <AL/al.h>
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# The reason for this is that the latter is not entirely portable.
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# Windows/Creative Labs does not by default put their headers in AL/ and
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# OS X uses the convention <OpenAL/al.h>.
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#
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# For Windows, Creative Labs seems to have added a registry key for their
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# OpenAL 1.1 installer. I have added that key to the list of search paths,
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# however, the key looks like it could be a little fragile depending on
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# if they decide to change the 1.00.0000 number for bug fix releases.
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# Also, they seem to have laid down groundwork for multiple library platforms
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# which puts the library in an extra subdirectory. Currently there is only
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# Win32 and I have hardcoded that here. This may need to be adjusted as
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# platforms are introduced.
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# The OpenAL 1.0 installer doesn't seem to have a useful key I can use.
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# I do not know if the Nvidia OpenAL SDK has a registry key.
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#
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# For OS X, remember that OpenAL was added by Apple in 10.4 (Tiger).
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# To support the framework, I originally wrote special framework detection
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# code in this module which I have now removed with CMake's introduction
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# of native support for frameworks.
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# In addition, OpenAL is open source, and it is possible to compile on Panther.
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# Furthermore, due to bugs in the initial OpenAL release, and the
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# transition to OpenAL 1.1, it is common to need to override the built-in
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# framework.
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# Per my request, CMake should search for frameworks first in
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# the following order:
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# ~/Library/Frameworks/OpenAL.framework/Headers
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# /Library/Frameworks/OpenAL.framework/Headers
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# /System/Library/Frameworks/OpenAL.framework/Headers
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#
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# On OS X, this will prefer the Framework version (if found) over others.
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# People will have to manually change the cache values of
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# OPENAL_LIBRARY to override this selection or set the CMake environment
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# CMAKE_INCLUDE_PATH to modify the search paths.
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find_path(OPENAL_INCLUDE_DIR al.h
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HINTS
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ENV OPENALDIR
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PATH_SUFFIXES include/AL include/OpenAL include AL OpenAL
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PATHS
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~/Library/Frameworks
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/Library/Frameworks
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/opt
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[HKEY_LOCAL_MACHINE\\SOFTWARE\\Creative\ Labs\\OpenAL\ 1.1\ Software\ Development\ Kit\\1.00.0000;InstallDir]
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)
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(_OpenAL_ARCH_DIR libs/Win64)
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else()
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set(_OpenAL_ARCH_DIR libs/Win32)
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endif()
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find_library(OPENAL_LIBRARY
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NAMES OpenAL al openal OpenAL32
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HINTS
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ENV OPENALDIR
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PATH_SUFFIXES libx32 lib64 lib libs64 libs ${_OpenAL_ARCH_DIR}
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PATHS
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~/Library/Frameworks
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/Library/Frameworks
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/opt
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[HKEY_LOCAL_MACHINE\\SOFTWARE\\Creative\ Labs\\OpenAL\ 1.1\ Software\ Development\ Kit\\1.00.0000;InstallDir]
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)
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unset(_OpenAL_ARCH_DIR)
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenAL DEFAULT_MSG OPENAL_LIBRARY OPENAL_INCLUDE_DIR)
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mark_as_advanced(OPENAL_LIBRARY OPENAL_INCLUDE_DIR)
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