initial buildroot for linux 5.15

package/rauc/Config.in

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+config BR2_PACKAGE_RAUC
+	bool "rauc"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # glib2
+	depends on BR2_USE_MMU # glib2
+	depends on BR2_USE_WCHAR # glib2
+	select BR2_PACKAGE_LIBGLIB2
+	select BR2_PACKAGE_OPENSSL
+	select BR2_PACKAGE_DBUS
+	select BR2_PACKAGE_SQUASHFS # run-time dependency
+	select BR2_PACKAGE_UBOOT_TOOLS if BR2_TARGET_UBOOT # run-time dependency
+	select BR2_PACKAGE_UBOOT_TOOLS_FWPRINTENV if BR2_TARGET_UBOOT
+	help
+	  RAUC is the Robust Auto-Update Controller developed by
+	  Pengutronix. It supports updating embedded Linux
+	  systems over the network or from disks and provides a
+	  d-bus interface.
+
+	  http://rauc.io/
+
+if BR2_PACKAGE_RAUC
+
+config BR2_PACKAGE_RAUC_NETWORK
+	bool "network support"
+	select BR2_PACKAGE_LIBCURL
+	help
+	  This option enables support for updating firmware over
+	  the network using libcurl.
+
+config BR2_PACKAGE_RAUC_JSON
+	bool "JSON output support"
+	select BR2_PACKAGE_JSON_GLIB
+	help
+	  This option enables support for providing output in
+	  JSON format.
+
+endif
+
+comment "rauc needs a toolchain w/ wchar, threads"
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU

package/rauc/Config.in.host

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+config BR2_PACKAGE_HOST_RAUC
+	bool "host rauc"
+	select BR2_PACKAGE_HOST_SQUASHFS # run-time dependency
+	help
+	  RAUC is the Robust Auto-Update Controller developed by
+	  Pengutronix. Enable this option to build the rauc
+	  host tool which may be used to generate firmware
+	  bundles that are handled by the target rauc service.
+
+	  http://rauc.io/

package/rauc/rauc.hash

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+# Locally calculated, after verifying against
+# https://github.com/rauc/rauc/releases/download/v1.5.1/rauc-1.5.1.tar.xz.asc
+sha256  d4ea009ce702bcb083d942398ccfedec959c6bbb7adc0fd77ae9314ce11d9d91  rauc-1.5.1.tar.xz
+sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING

package/rauc/rauc.mk

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+################################################################################
+#
+# rauc
+#
+################################################################################
+
+RAUC_VERSION = 1.5.1
+RAUC_SITE = https://github.com/rauc/rauc/releases/download/v$(RAUC_VERSION)
+RAUC_SOURCE = rauc-$(RAUC_VERSION).tar.xz
+RAUC_LICENSE = LGPL-2.1
+RAUC_LICENSE_FILES = COPYING
+RAUC_CPE_ID_VENDOR = pengutronix
+RAUC_DEPENDENCIES = host-pkgconf openssl libglib2 dbus
+
+ifeq ($(BR2_PACKAGE_RAUC_NETWORK),y)
+RAUC_CONF_OPTS += --enable-network
+RAUC_DEPENDENCIES += libcurl
+else
+RAUC_CONF_OPTS += --disable-network
+endif
+
+ifeq ($(BR2_PACKAGE_RAUC_JSON),y)
+RAUC_CONF_OPTS += --enable-json
+RAUC_DEPENDENCIES += json-glib
+else
+RAUC_CONF_OPTS += --disable-json
+endif
+
+ifeq ($(BR2_PACKAGE_SYSTEMD),y)
+# configure uses pkg-config --variable=systemdsystemunitdir systemd
+RAUC_DEPENDENCIES += systemd
+endif
+
+define RAUC_INSTALL_INIT_SYSTEMD
+	mkdir -p $(TARGET_DIR)/usr/lib/systemd/system/rauc.service.d
+	printf '[Install]\nWantedBy=multi-user.target\n' \
+		>$(TARGET_DIR)/usr/lib/systemd/system/rauc.service.d/buildroot-enable.conf
+endef
+
+HOST_RAUC_DEPENDENCIES = \
+	host-pkgconf \
+	host-openssl \
+	host-libglib2 \
+	host-squashfs \
+	$(if $(BR2_PACKAGE_HOST_LIBP11),host-libp11)
+HOST_RAUC_CONF_OPTS += \
+	--disable-network \
+	--disable-json \
+	--disable-service \
+	--without-dbuspolicydir \
+	--with-systemdunitdir=no
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))