initial buildroot for linux 5.15

package/bluez-alsa/Config.in

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+config BR2_PACKAGE_BLUEZ_ALSA
+	bool "bluez-alsa"
+	depends on !BR2_STATIC_LIBS # bluez5
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C11/stdatomic.h
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 # bluez5
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # bluez5
+	depends on BR2_USE_MMU # bluez5 -> dbus
+	depends on BR2_USE_WCHAR # libglib2
+	select BR2_PACKAGE_ALSA_LIB
+	select BR2_PACKAGE_BLUEZ5_UTILS
+	select BR2_PACKAGE_BLUEZ5_UTILS_PLUGINS_AUDIO
+	select BR2_PACKAGE_LIBGLIB2
+	select BR2_PACKAGE_SBC
+	help
+	  Bluetooth Audio ALSA Backend.
+
+	  https://github.com/Arkq/bluez-alsa
+
+if BR2_PACKAGE_BLUEZ_ALSA
+
+config BR2_PACKAGE_BLUEZ_ALSA_HCITOP
+	bool "hcitop"
+	depends on BR2_PACKAGE_LIBBSD_ARCH_SUPPORTS
+	select BR2_PACKAGE_LIBBSD
+	select BR2_PACKAGE_NCURSES
+	help
+	  Enable top-like monitoring tool for HCI.
+
+config BR2_PACKAGE_BLUEZ_ALSA_RFCOMM
+	bool "rfcomm"
+	select BR2_PACKAGE_READLINE
+	help
+	  Simple tool for sending RFCOMM commands.
+
+endif
+
+comment "bluez-alsa needs a toolchain w/ wchar, NPTL, headers >= 3.4, dynamic library, gcc >= 4.9"
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
+	depends on BR2_USE_MMU

package/bluez-alsa/bluez-alsa.hash

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+# Locally calculated:
+sha256  d9a878d9fd7f18842c9c8ed83bc96cab684753c90f2751d575a3cdd776ec78a5  bluez-alsa-3.1.0.tar.gz
+sha256  60253922a459245128c34eb379cbda7c76936636d4c10edc576663a0f560dd4d  LICENSE

package/bluez-alsa/bluez-alsa.mk

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+################################################################################
+#
+# bluez-alsa
+#
+################################################################################
+
+BLUEZ_ALSA_VERSION = 3.1.0
+BLUEZ_ALSA_SITE = $(call github,Arkq,bluez-alsa,v$(BLUEZ_ALSA_VERSION))
+BLUEZ_ALSA_LICENSE = MIT
+BLUEZ_ALSA_LICENSE_FILES = LICENSE
+BLUEZ_ALSA_DEPENDENCIES = alsa-lib bluez5_utils libglib2 sbc host-pkgconf
+
+# git repo, no configure
+BLUEZ_ALSA_AUTORECONF = YES
+
+BLUEZ_ALSA_CONF_OPTS = \
+	--enable-a2dpconf \
+	--enable-aplay \
+	--disable-debug-time \
+	--with-alsaplugindir=/usr/lib/alsa-lib \
+	--with-alsaconfdir=/etc/alsa/conf.d
+
+ifeq ($(BR2_PACKAGE_FDK_AAC),y)
+BLUEZ_ALSA_DEPENDENCIES += fdk-aac
+BLUEZ_ALSA_CONF_OPTS += --enable-aac
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-aac
+endif
+
+ifeq ($(BR2_PACKAGE_LAME),y)
+BLUEZ_ALSA_DEPENDENCIES += lame
+BLUEZ_ALSA_CONF_OPTS += --enable-mp3lame
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-mp3lame
+endif
+
+ifeq ($(BR2_PACKAGE_MPG123),y)
+BLUEZ_ALSA_DEPENDENCIES += mpg123
+BLUEZ_ALSA_CONF_OPTS += --enable-mpg123
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-mpg123
+endif
+
+# no build dependency, disables internal HFP in favor of oFonos HFP profile
+ifeq ($(BR2_PACKAGE_OFONO),y)
+BLUEZ_ALSA_CONF_OPTS += --enable-ofono
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-ofono
+endif
+
+# no build dependency, enables integration with UPower D-Bus service
+ifeq ($(BR2_PACKAGE_UPOWER),y)
+BLUEZ_ALSA_CONF_OPTS += --enable-upower
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-upower
+endif
+
+ifeq ($(BR2_PACKAGE_BLUEZ_ALSA_HCITOP),y)
+BLUEZ_ALSA_DEPENDENCIES += libbsd ncurses
+BLUEZ_ALSA_CONF_OPTS += --enable-hcitop
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-hcitop
+endif
+
+ifeq ($(BR2_PACKAGE_BLUEZ_ALSA_RFCOMM),y)
+BLUEZ_ALSA_DEPENDENCIES += readline
+BLUEZ_ALSA_CONF_OPTS += --enable-rfcomm
+else
+BLUEZ_ALSA_CONF_OPTS += --disable-rfcomm
+endif
+
+$(eval $(autotools-package))