|
|
|
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
|
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
|
|
|
|
|
|
#[=======================================================================[.rst:
|
|
|
|
|
FindALSA
|
|
|
|
|
--------
|
|
|
|
|
|
|
|
|
|
Find Advanced Linux Sound Architecture (ALSA)
|
|
|
|
|
|
|
|
|
|
Find the alsa libraries (``asound``)
|
|
|
|
|
|
|
|
|
|
IMPORTED Targets
|
|
|
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
.. versionadded:: 3.12
|
|
|
|
|
|
|
|
|
|
This module defines :prop_tgt:`IMPORTED` target ``ALSA::ALSA``, if
|
|
|
|
|
ALSA has been found.
|
|
|
|
|
|
|
|
|
|
Result Variables
|
|
|
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
This module defines the following variables:
|
|
|
|
|
|
|
|
|
|
``ALSA_FOUND``
|
|
|
|
|
True if ALSA_INCLUDE_DIR & ALSA_LIBRARY are found
|
|
|
|
|
|
|
|
|
|
``ALSA_LIBRARIES``
|
|
|
|
|
List of libraries when using ALSA.
|
|
|
|
|
|
|
|
|
|
``ALSA_INCLUDE_DIRS``
|
|
|
|
|
Where to find the ALSA headers.
|
|
|
|
|
|
|
|
|
|
Cache variables
|
|
|
|
|
^^^^^^^^^^^^^^^
|
|
|
|
|
|
|
|
|
|
The following cache variables may also be set:
|
|
|
|
|
|
|
|
|
|
``ALSA_INCLUDE_DIR``
|
|
|
|
|
the ALSA include directory
|
|
|
|
|
|
|
|
|
|
``ALSA_LIBRARY``
|
|
|
|
|
the absolute path of the asound library
|
|
|
|
|
#]=======================================================================]
|
|
|
|
|
|
|
|
|
|
cmake_policy(PUSH)
|
|
|
|
|
cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
|
|
|
|
|
|
|
|
|
|
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()
|
|
|
|
|
|
|
|
|
|
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 ${ALSA_INCLUDE_DIR} )
|
|
|
|
|
if(NOT TARGET ALSA::ALSA)
|
|
|
|
|
add_library(ALSA::ALSA UNKNOWN IMPORTED)
|
|
|
|
|
set_target_properties(ALSA::ALSA PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${ALSA_INCLUDE_DIRS}")
|
|
|
|
|
set_property(TARGET ALSA::ALSA APPEND PROPERTY IMPORTED_LOCATION "${ALSA_LIBRARY}")
|
|
|
|
|
endif()
|
|
|
|
|
endif()
|
|
|
|
|
|
|
|
|
|
mark_as_advanced(ALSA_INCLUDE_DIR ALSA_LIBRARY)
|
|
|
|
|
|
|
|
|
|
cmake_policy(POP)
|
