| Ryan Prichard | 7aea7e9 | 2022-01-13 17:30:17 -0800 | [diff] [blame^] | 1 | # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| 2 | # file Copyright.txt or https://cmake.org/licensing for details. |
| 3 | |
| 4 | #[=======================================================================[.rst: |
| 5 | FindALSA |
| 6 | -------- |
| 7 | |
| 8 | Find Advanced Linux Sound Architecture (ALSA) |
| 9 | |
| 10 | Find the alsa libraries (``asound``) |
| 11 | |
| 12 | IMPORTED Targets |
| 13 | ^^^^^^^^^^^^^^^^ |
| 14 | |
| 15 | .. versionadded:: 3.12 |
| 16 | |
| 17 | This module defines :prop_tgt:`IMPORTED` target ``ALSA::ALSA``, if |
| 18 | ALSA has been found. |
| 19 | |
| 20 | Result Variables |
| 21 | ^^^^^^^^^^^^^^^^ |
| 22 | |
| 23 | This module defines the following variables: |
| 24 | |
| 25 | ``ALSA_FOUND`` |
| 26 | True if ALSA_INCLUDE_DIR & ALSA_LIBRARY are found |
| 27 | |
| 28 | ``ALSA_LIBRARIES`` |
| 29 | List of libraries when using ALSA. |
| 30 | |
| 31 | ``ALSA_INCLUDE_DIRS`` |
| 32 | Where to find the ALSA headers. |
| 33 | |
| 34 | Cache variables |
| 35 | ^^^^^^^^^^^^^^^ |
| 36 | |
| 37 | The following cache variables may also be set: |
| 38 | |
| 39 | ``ALSA_INCLUDE_DIR`` |
| 40 | the ALSA include directory |
| 41 | |
| 42 | ``ALSA_LIBRARY`` |
| 43 | the absolute path of the asound library |
| 44 | #]=======================================================================] |
| 45 | |
| 46 | find_path(ALSA_INCLUDE_DIR NAMES alsa/asoundlib.h |
| 47 | DOC "The ALSA (asound) include directory" |
| 48 | ) |
| 49 | |
| 50 | find_library(ALSA_LIBRARY NAMES asound |
| 51 | DOC "The ALSA (asound) library" |
| 52 | ) |
| 53 | |
| 54 | if(ALSA_INCLUDE_DIR AND EXISTS "${ALSA_INCLUDE_DIR}/alsa/version.h") |
| 55 | file(STRINGS "${ALSA_INCLUDE_DIR}/alsa/version.h" alsa_version_str REGEX "^#define[\t ]+SND_LIB_VERSION_STR[\t ]+\".*\"") |
| 56 | |
| 57 | string(REGEX REPLACE "^.*SND_LIB_VERSION_STR[\t ]+\"([^\"]*)\".*$" "\\1" ALSA_VERSION_STRING "${alsa_version_str}") |
| 58 | unset(alsa_version_str) |
| 59 | endif() |
| 60 | |
| 61 | include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) |
| 62 | FIND_PACKAGE_HANDLE_STANDARD_ARGS(ALSA |
| 63 | REQUIRED_VARS ALSA_LIBRARY ALSA_INCLUDE_DIR |
| 64 | VERSION_VAR ALSA_VERSION_STRING) |
| 65 | |
| 66 | if(ALSA_FOUND) |
| 67 | set( ALSA_LIBRARIES ${ALSA_LIBRARY} ) |
| 68 | set( ALSA_INCLUDE_DIRS ${ALSA_INCLUDE_DIR} ) |
| 69 | if(NOT TARGET ALSA::ALSA) |
| 70 | add_library(ALSA::ALSA UNKNOWN IMPORTED) |
| 71 | set_target_properties(ALSA::ALSA PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${ALSA_INCLUDE_DIRS}") |
| 72 | set_property(TARGET ALSA::ALSA APPEND PROPERTY IMPORTED_LOCATION "${ALSA_LIBRARY}") |
| 73 | endif() |
| 74 | endif() |
| 75 | |
| 76 | mark_as_advanced(ALSA_INCLUDE_DIR ALSA_LIBRARY) |