initial buildroot for linux 5.15

package/libcgroup/Config.in

@@ -0,0 +1,22 @@
+config BR2_PACKAGE_LIBCGROUP
+	bool "libcgroup"
+	depends on BR2_INSTALL_LIBSTDCPP
+	# libcgroup uses <fts.h> which is not included by default in uClibc
+	depends on BR2_TOOLCHAIN_USES_GLIBC
+	help
+	  libcgroup is a library that abstracts the control
+	  group file system in Linux.
+
+	  http://libcg.sourceforge.net/
+
+if BR2_PACKAGE_LIBCGROUP
+
+config BR2_PACKAGE_LIBCGROUP_TOOLS
+	bool "install tools"
+	help
+	  Include a set of command-line tools for managing cgroups.
+
+endif
+
+comment "libcgroup needs a glibc toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_USES_GLIBC

package/libcgroup/libcgroup.hash

@@ -0,0 +1,5 @@
+# From https://github.com/libcgroup/libcgroup/releases/download/v0.42.2/libcgroup-0.42.2.tar.bz2.sha256
+sha256  18939381324d418e11be4f5fdca37b01652c18917bfaf1f6b0c505f157e18d07  libcgroup-0.42.2.tar.bz2
+
+# Hash for license file
+sha256  a9bdde5616ecdd1e980b44f360600ee8783b1f99b8cc83a2beb163a0a390e861  COPYING

package/libcgroup/libcgroup.mk

@@ -0,0 +1,40 @@
+################################################################################
+#
+# libcgroup
+#
+################################################################################
+
+LIBCGROUP_VERSION = 0.42.2
+LIBCGROUP_SOURCE = libcgroup-$(LIBCGROUP_VERSION).tar.bz2
+LIBCGROUP_SITE = https://github.com/libcgroup/libcgroup/releases/download/v$(LIBCGROUP_VERSION)
+LIBCGROUP_LICENSE = LGPL-2.1
+LIBCGROUP_LICENSE_FILES = COPYING
+LIBCGROUP_CPE_ID_VENDOR = libcgroup_project
+LIBCGROUP_DEPENDENCIES = host-bison host-flex
+LIBCGROUP_INSTALL_STAGING = YES
+
+# Undefining _FILE_OFFSET_BITS here because of a "bug" with glibc fts.h
+# large file support. See https://bugzilla.redhat.com/show_bug.cgi?id=574992
+# for more information.
+LIBCGROUP_CONF_ENV = \
+	CXXFLAGS="$(TARGET_CXXFLAGS) -U_FILE_OFFSET_BITS" \
+	CFLAGS="$(TARGET_CFLAGS) -U_FILE_OFFSET_BITS"
+
+LIBCGROUP_CONF_OPTS = \
+	--disable-daemon \
+	--disable-initscript-install
+
+ifeq ($(BR2_PACKAGE_LIBCGROUP_TOOLS),y)
+LIBCGROUP_CONF_OPTS += --enable-tools
+else
+LIBCGROUP_CONF_OPTS += --disable-tools
+endif
+
+ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
+LIBCGROUP_DEPENDENCIES += linux-pam
+LIBCGROUP_CONF_OPTS += --enable-pam
+else
+LIBCGROUP_CONF_OPTS += --disable-pam
+endif
+
+$(eval $(autotools-package))