initial buildroot for linux 5.15

package/ndisc6/Config.in

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+config BR2_PACKAGE_NDISC6
+	bool "ndisc6 tools"
+	depends on BR2_USE_MMU # fork()
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 # c11
+	help
+	  NDisc6 is a small collection of useful tools for IPv6
+	  networking
+
+	  http://www.remlab.net/ndisc6/
+
+if BR2_PACKAGE_NDISC6
+
+config BR2_PACKAGE_NDISC6_NAME2ADDR
+	bool "name2addr"
+	help
+	  name2addr perform DNS lookups from scripts.
+
+config BR2_PACKAGE_NDISC6_NDISC6
+	bool "ndisc6"
+	help
+	  ndisc6 performs ICMPv6 Neighbor Discovery in userland.
+
+config BR2_PACKAGE_NDISC6_RDISC6
+	bool "rdisc6"
+	help
+	  rdisc6 performs ICMPv6 Router Discovery in userland.
+
+config BR2_PACKAGE_NDISC6_RDNSSD
+	bool "rdnssd"
+	help
+	  IPv6 Recursive DNS Server discovery Daemon.
+
+config BR2_PACKAGE_NDISC6_RLTRACEROUTE6
+	bool "rltraceroute6"
+	help
+	  rltraceroute6 is an IPv6 traceroute implementation.
+
+config BR2_PACKAGE_NDISC6_TCPTRACEROUTE6
+	bool "tcptraceroute6"
+	help
+	  tcptraceroute6 is an TCP/IPv6 traceroute implementation.
+
+config BR2_PACKAGE_NDISC6_TCPSPRAY
+	bool "tcpspray"
+	help
+	  TCP/IP bandwidth measurement tool (Discard and Echo client).
+
+endif
+
+comment "ndisc6 needs a toolchain w/ gcc >= 4.7"
+	depends on BR2_USE_MMU
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_4_7

package/ndisc6/ndisc6.hash

@@ -0,0 +1,4 @@
+# Locally calculated after checking pgp signature
+sha256  36932f9fc47e2844abcda7550fa1343b3af4b4208dfb61e0c9d9224aad5df351  ndisc6-1.0.5.tar.bz2
+# Locally computed
+sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING

package/ndisc6/ndisc6.mk

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+################################################################################
+#
+# ndisc6
+#
+################################################################################
+
+NDISC6_VERSION = 1.0.5
+NDISC6_SOURCE = ndisc6-$(NDISC6_VERSION).tar.bz2
+NDISC6_SITE = http://www.remlab.net/files/ndisc6
+NDISC6_CONF_ENV = CC="$(TARGET_CC) -std=c11" LIBS=$(TARGET_NLS_LIBS)
+NDISC6_CONF_OPTS = --disable-rpath --disable-suid-install
+NDISC6_LICENSE = GPL-2.0 or GPL-3.0
+NDISC6_LICENSE_FILES = COPYING
+NDISC6_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
+
+NDISC6_BIN_ += dnssort # perl script
+NDISC6_BIN_$(BR2_PACKAGE_NDISC6_NAME2ADDR) += name2addr addr2name
+NDISC6_BIN_$(BR2_PACKAGE_NDISC6_TCPSPRAY) += tcpspray tcpspray6
+
+NDISC6_SBIN_$(BR2_PACKAGE_NDISC6_NDISC6) += ndisc6
+NDISC6_SBIN_$(BR2_PACKAGE_NDISC6_RDISC6) += rdisc6
+NDISC6_SBIN_$(BR2_PACKAGE_NDISC6_RDNSSD) += rdnssd
+NDISC6_SBIN_$(BR2_PACKAGE_NDISC6_RLTRACEROUTE6) += rltraceroute6 tracert6
+NDISC6_SBIN_$(BR2_PACKAGE_NDISC6_TCPTRACEROUTE6) += tcptraceroute6
+
+define NDISC6_REMOVE_UNNEEDED
+	rm -rf $(addprefix $(TARGET_DIR)/usr/bin/,$(NDISC6_BIN_)) \
+		$(addprefix $(TARGET_DIR)/usr/sbin/,$(NDISC6_SBIN_))
+	$(if $(BR2_PACKAGE_NDISC6_RDNSSD),,\
+		rm -rf $(TARGET_DIR)/etc/rdnssd $(TARGET_DIR)/var/run/rdnssd)
+endef
+
+NDISC6_POST_INSTALL_TARGET_HOOKS += NDISC6_REMOVE_UNNEEDED
+
+$(eval $(autotools-package))