package/mpd: add option to enable or disable OSS support

By default, the OSS support is enabled, which may not necessarily be
useful on most Linux systems that use ALSA.

[Thomas: tweak commit title and log.]

Signed-off-by: Jörg Krause <jkrause@posteo.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mpd/Config.in

@@ -245,6 +245,11 @@ comment "jack support needs a toolchain w/ largefile"
 	depends on BR2_ARCH_HAS_ATOMICS
 	depends on !BR2_LARGEFILE
 
+config BR2_PACKAGE_MPD_OSS
+	bool "oss"
+	help
+	  Enable OSS (Open Sound System) output support.
+
 config BR2_PACKAGE_MPD_PULSEAUDIO
 	bool "pulseaudio"
 	depends on BR2_LARGEFILE # pulseaudio -> libsndfile

package/mpd/mpd.mk

@@ -175,6 +175,12 @@ else
 MPD_CONF_OPTS += --disable-opus
 endif
 
+ifeq ($(BR2_PACKAGE_MPD_OSS),y)
+MPD_CONF_OPTS += --enable-oss
+else
+MPD_CONF_OPTS += --disable-oss
+endif
+
 ifeq ($(BR2_PACKAGE_MPD_PULSEAUDIO),y)
 MPD_DEPENDENCIES += pulseaudio
 MPD_CONF_OPTS += --enable-pulse