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# - Find alsa
# Find the alsa libraries (asound)
#
# This module defines the following variables:
# ALSA_FOUND - True if ALSA_INCLUDE_DIR & ALSA_LIBRARY are found
# ALSA_LIBRARIES - Set when ALSA_LIBRARY is found
# ALSA_INCLUDE_DIRS - Set when ALSA_INCLUDE_DIR is found
#
# ALSA_INCLUDE_DIR - where to find asoundlib.h, etc.
# ALSA_LIBRARY - the asound library
# ALSA_VERSION_STRING - the version of alsa found (since CMake 2.8.8)
#
#=============================================================================
# Copyright 2009-2011 Kitware, Inc.
# Copyright 2009-2011 Philip Lowman <philip@yhbt.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
find_path(ALSA_INCLUDE_DIR NAMES alsa/asoundlib.h
DOC "The ALSA (asound) include directory"
)
find_library(ALSA_LIBRARY NAMES asound
DOC "The ALSA (asound) library"
)
if(ALSA_INCLUDE_DIR AND EXISTS "${ALSA_INCLUDE_DIR}/alsa/version.h")
file(STRINGS "${ALSA_INCLUDE_DIR}/alsa/version.h" alsa_version_str REGEX "^#define[\t ]+SND_LIB_VERSION_STR[\t ]+\".*\"")
string(REGEX REPLACE "^.*SND_LIB_VERSION_STR[\t ]+\"([^\"]*)\".*$" "\\1" ALSA_VERSION_STRING "${alsa_version_str}")
unset(alsa_version_str)
endif()
# handle the QUIETLY and REQUIRED arguments and set ALSA_FOUND to TRUE if
# all listed variables are TRUE
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(ALSA
REQUIRED_VARS ALSA_LIBRARY ALSA_INCLUDE_DIR
VERSION_VAR ALSA_VERSION_STRING)
if(ALSA_FOUND)
set( ALSA_LIBRARIES ${ALSA_LIBRARY} )
set( ALSA_INCLUDE_DIRS ${ALSA_INCLUDE_DIR} )
endif()
mark_as_advanced(ALSA_INCLUDE_DIR ALSA_LIBRARY)
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