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--- a/cmake/modules/FindAlsa.cmake
+++ b/cmake/modules/FindAlsa.cmake
@@ -13,10 +13,14 @@
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+OPTION(WITH_Alsa "Support for the ALSA sound system." ON)
+
include(CheckIncludeFiles)
include(CheckIncludeFileCXX)
include(CheckLibraryExists)
+if(WITH_Alsa)
+
# Already done by toplevel
find_library(ASOUND_LIBRARY asound)
check_library_exists(asound snd_seq_create_simple_port ${ASOUND_LIBRARY} HAVE_LIBASOUND2)
@@ -29,19 +33,22 @@
find_path(ALSA_INCLUDES alsa/version.h)
+endif(WITH_Alsa)
+
macro(ALSA_VERSION_STRING _result)
# check for version in alsa/version.h
- if(ALSA_INCLUDES)
+ if(WITH_Alsa AND ALSA_INCLUDES)
file(READ "${ALSA_INCLUDES}/alsa/version.h" _ALSA_VERSION_CONTENT)
string(REGEX REPLACE ".*SND_LIB_VERSION_STR.*\"(.*)\".*" "\\1" ${_result} ${_ALSA_VERSION_CONTENT})
- else(ALSA_INCLUDES)
+ else(WITH_Alsa AND ALSA_INCLUDES)
message(STATUS "ALSA version not known. ALSA output will probably not work correctly.")
- endif(ALSA_INCLUDES)
+ endif(WITH_Alsa AND ALSA_INCLUDES)
endmacro(ALSA_VERSION_STRING _result)
get_filename_component(_FIND_ALSA_MODULE_DIR ${CMAKE_CURRENT_LIST_FILE} PATH)
macro(ALSA_CONFIGURE_FILE _destFile)
+ if(WITH_Alsa)
check_include_files(sys/soundcard.h HAVE_SYS_SOUNDCARD_H)
check_include_files(machine/soundcard.h HAVE_MACHINE_SOUNDCARD_H)
@@ -58,6 +65,7 @@
set(HAVE_SND_PCM_RESUME 1)
endif(ASOUND_HAS_SND_PCM_RESUME)
+ endif(WITH_Alsa)
configure_file(${_FIND_ALSA_MODULE_DIR}/config-alsa.h.cmake ${_destFile})
endmacro(ALSA_CONFIGURE_FILE _destFile)
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