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# Locate OpenAL
# This module defines
# OPENAL_LIBRARY
# OPENAL_FOUND, if false, do not try to link to OpenAL
# OPENAL_INCLUDE_DIR, where to find the headers
#
# $OPENALDIR is an environment variable that would
# correspond to the ./configure --prefix=$OPENALDIR
# used in building OpenAL.
#
# Created by Eric Wing. This was influenced by the FindSDL.cmake module.
# This makes the presumption that you are include al.h like
# #include "al.h"
# and not
# #include <AL/al.h>
# The reason for this is that the latter is not entirely portable.
# Windows/Creative Labs does not by default put their headers in AL/ and
# OS X uses the convention <OpenAL/al.h>.
#
# For Windows, Creative Labs seems to have added a registry key for their
# OpenAL 1.1 installer. I have added that key to the list of search paths,
# however, the key looks like it could be a little fragile depending on
# if they decide to change the 1.00.0000 number for bug fix releases.
# Also, they seem to have laid down groundwork for multiple library platforms
# which puts the library in an extra subdirectory. Currently there is only
# Win32 and I have hardcoded that here. This may need to be adjusted as
# platforms are introduced.
# The OpenAL 1.0 installer doesn't seem to have a useful key I can use.
# I do not know if the Nvidia OpenAL SDK has a registry key.
#
# For OS X, remember that OpenAL was added by Apple in 10.4 (Tiger).
# To support the framework, I originally wrote special framework detection
# code in this module which I have now removed with CMake's introduction
# of native support for frameworks.
# In addition, OpenAL is open source, and it is possible to compile on Panther.
# Furthermore, due to bugs in the initial OpenAL release, and the
# transition to OpenAL 1.1, it is common to need to override the built-in
# framework.
# Per my request, CMake should search for frameworks first in
# the following order:
# ~/Library/Frameworks/OpenAL.framework/Headers
# /Library/Frameworks/OpenAL.framework/Headers
# /System/Library/Frameworks/OpenAL.framework/Headers
#
# On OS X, this will prefer the Framework version (if found) over others.
# People will have to manually change the cache values of
# OPENAL_LIBRARY to override this selection or set the CMake environment
# CMAKE_INCLUDE_PATH to modify the search paths.
FIND_PATH(OPENAL_INCLUDE_DIR al.h
PATHS
$ENV{OPENALDIR}
NO_DEFAULT_PATH
PATH_SUFFIXES include/AL include/OpenAL include
)
FIND_PATH(OPENAL_INCLUDE_DIR al.h
PATHS ${CMAKE_PREFIX_PATH} # Unofficial: We are proposing this.
NO_DEFAULT_PATH
PATH_SUFFIXES include/AL include/OpenAL include
)
FIND_PATH(OPENAL_INCLUDE_DIR al.h
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Creative\ Labs\\OpenAL\ 1.1\ Software\ Development\ Kit\\1.00.0000;InstallDir]
PATH_SUFFIXES include include/lua51 include/lua5.1 include/lua
)
FIND_LIBRARY(OPENAL_LIBRARY
NAMES OpenAL al openal OpenAL32
PATHS
$ENV{OPENALDIR}
NO_DEFAULT_PATH
PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
)
FIND_LIBRARY(OPENAL_LIBRARY
NAMES OpenAL al openal OpenAL32
PATHS ${CMAKE_PREFIX_PATH} # Unofficial: We are proposing this.
NO_DEFAULT_PATH
PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
)
FIND_LIBRARY(OPENAL_LIBRARY
NAMES OpenAL al openal OpenAL32
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/sw
/opt/local
/opt/csw
/opt
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Creative\ Labs\\OpenAL\ 1.1\ Software\ Development\ Kit\\1.00.0000;InstallDir]
PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
)
SET(OPENAL_FOUND "NO")
IF(OPENAL_LIBRARY AND OPENAL_INCLUDE_DIR)
SET(OPENAL_FOUND "YES")
ENDIF(OPENAL_LIBRARY AND OPENAL_INCLUDE_DIR)
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