initial buildroot for linux 5.15

package/sdbusplus/Config.in

@@ -0,0 +1,16 @@
+config BR2_PACKAGE_SDBUSPLUS
+	bool "sdbusplus"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_PACKAGE_SYSTEMD
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_7 # C++17
+	help
+	  A C++ library for sd-bus with a bindings and doc generator.
+
+	  This will build the target library.  See the host package for
+	  the bindings and documentation generation program.
+
+	  https://github.com/openbmc/sdbusplus
+
+comment "sdbusplus needs systemd and a toolchain w/ C++, gcc >= 7"
+	depends on !BR2_PACKAGE_SYSTEMD || !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_7

package/sdbusplus/Config.in.host

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+config BR2_PACKAGE_HOST_SDBUSPLUS
+	bool "host-sdbusplus"
+	select BR2_PACKAGE_HOST_PKGCONF
+	help
+	  A C++ library for sd-bus with a bindings and doc generator.
+
+	  This will build the Python host side generation tool for
+	  bindings and documentation.
+
+	  https://github.com/openbmc/sdbusplus

package/sdbusplus/sdbusplus.hash

@@ -0,0 +1,5 @@
+# Locally calculated
+sha256  c67b8f3d9b74fd0d70eb6eec3b2ec2d496d0f169deedf6fc07dbff2c2f275d2b  sdbusplus-4212292bcf136d04b38ba5116aa568b0fa312798.tar.gz
+
+# License file, locally calculated
+sha256  b40930bbcf80744c86c46a12bc9da056641d722716c378f5659b9e555ef833e1  LICENSE

package/sdbusplus/sdbusplus.mk

@@ -0,0 +1,35 @@
+################################################################################
+#
+# sdbusplus
+#
+################################################################################
+
+SDBUSPLUS_VERSION = 4212292bcf136d04b38ba5116aa568b0fa312798
+SDBUSPLUS_SITE = $(call github,openbmc,sdbusplus,$(SDBUSPLUS_VERSION))
+SDBUSPLUS_DEPENDENCIES = host-autoconf-archive host-pkgconf systemd
+HOST_SDBUSPLUS_DEPENDENCIES = \
+	host-autoconf-archive \
+	host-pkgconf \
+	host-python3 \
+	host-python-inflection \
+	host-python-mako \
+	host-python-pyyaml
+SDBUSPLUS_CONF_OPTS = --disable-sdbuspp
+HOST_SDBUSPLUS_CONF_OPTS = --disable-libsdbusplus
+SDBUSPLUS_AUTORECONF = YES
+SDBUSPLUS_AUTORECONF_OPTS = --include=$(HOST_DIR)/share/autoconf-archive
+SDBUSPLUS_INSTALL_STAGING = YES
+SDBUSPLUS_LICENSE = Apache-2.0
+SDBUSPLUS_LICENSE_FILES = LICENSE
+
+# Autoreconf is missing the m4/ directory, which might actually be missing
+# iff it was the first argument, but unfortunately we are overriding the
+# first include directory above. Thus we need that hook here.
+define SDBUSPLUS_CREATE_M4
+	mkdir -p $(@D)/m4
+endef
+SDBUSPLUS_POST_PATCH_HOOKS += SDBUSPLUS_CREATE_M4
+HOST_SDBUSPLUS_POST_PATCH_HOOKS += SDBUSPLUS_CREATE_M4
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))