initial buildroot for linux 5.15

package/libnetfilter_cthelper/0001-uclinux.patch

@@ -0,0 +1,26 @@
+From d028334281b218209412ec6e1dba56ca96320bd9 Mon Sep 17 00:00:00 2001
+From: Gustavo Zacarias <gustavo@zacarias.com.ar>
+Date: Tue, 10 Sep 2013 16:08:29 -0300
+Subject: [PATCH] configure: uclinux is also linux
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index d52b1ce..9389b70 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -22,7 +22,7 @@ AC_DISABLE_STATIC
+ LT_INIT
+ CHECK_GCC_FVISIBILITY
+ case "$host" in
+-*-*-linux*) ;;
++*-*-linux* | *-*-uclinux*) ;;
+ *) AC_MSG_ERROR([Linux only, dude!]);;
+ esac
+ 
+-- 
+1.8.1.5
+

package/libnetfilter_cthelper/Config.in

@@ -0,0 +1,9 @@
+config BR2_PACKAGE_LIBNETFILTER_CTHELPER
+	bool "libnetfilter_cthelper"
+	select BR2_PACKAGE_LIBMNL
+	help
+	  libnetfilter_cthelper is the userspace library that provides
+	  the programming interface to the user-space helper
+	  infrastructure available since Linux kernel 3.6.
+
+	  http://www.netfilter.org/projects/libnetfilter_cthelper/

package/libnetfilter_cthelper/libnetfilter_cthelper.hash

@@ -0,0 +1,6 @@
+# From ftp://ftp.netfilter.org/pub/libnetfilter_cthelper/libnetfilter_cthelper-1.0.0.tar.bz2.{md5sum,sha1sum}
+md5	b2efab1a3a198a5add448960ba011acd	libnetfilter_cthelper-1.0.0.tar.bz2
+sha1	5d0a82794bd46aafde20c16800edca23d563de66	libnetfilter_cthelper-1.0.0.tar.bz2
+
+# Hash for license file:
+sha256	91df39d1816bfb17a4dda2d3d2c83b1f6f2d38d53e53e41e8f97ad5ac46a0cad	COPYING

package/libnetfilter_cthelper/libnetfilter_cthelper.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# libnetfilter_cthelper
+#
+################################################################################
+
+LIBNETFILTER_CTHELPER_VERSION = 1.0.0
+LIBNETFILTER_CTHELPER_SOURCE = libnetfilter_cthelper-$(LIBNETFILTER_CTHELPER_VERSION).tar.bz2
+LIBNETFILTER_CTHELPER_SITE = http://www.netfilter.org/projects/libnetfilter_cthelper/files
+LIBNETFILTER_CTHELPER_INSTALL_STAGING = YES
+LIBNETFILTER_CTHELPER_DEPENDENCIES = host-pkgconf libmnl
+LIBNETFILTER_CTHELPER_AUTORECONF = YES
+LIBNETFILTER_CTHELPER_LICENSE = GPL-2.0+
+LIBNETFILTER_CTHELPER_LICENSE_FILES = COPYING
+LIBNETFILTER_CTHELPER_CPE_ID_VENDOR = netfilter
+
+$(eval $(autotools-package))