ndisc6: Fix build with clang and update to latest on git

Change recipe to git and http protocol
Pass PERL variable to configure
Add patches to fix VLAIS
Re-organize structure of recipe
Copy gettext.h from native sysroot instead of depending on build host

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>

meta-networking/recipes-support/ndisc6/ndisc6/0001-autogen-Do-not-symlink-gettext.h-from-build-host.patch

@@ -0,0 +1,34 @@
+From 1ee2c998933c4a3d7e7b386352cbdb12f270774c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 6 Sep 2017 20:50:48 -0700
+Subject: [PATCH] autogen: Do not symlink gettext.h from build host
+
+This will create a dependency on build host having gettext
+installed which may not always be the case.
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Inappropriate [Cross-compile specific]
+ autogen.sh | 6 ------
+ 1 file changed, 6 deletions(-)
+
+diff --git a/autogen.sh b/autogen.sh
+index 3371011..bbc7add 100755
+--- a/autogen.sh
++++ b/autogen.sh
+@@ -25,12 +25,6 @@ echo "Running autoreconf ..."
+ autoreconf -sfi
+ unlink po/Makevars.template
+ 
+-for d in /usr /usr/local /opt/gettext /usr/pkg $HOME ; do
+-	if test -f $d/share/gettext/gettext.h ; then
+-		ln -sf $d/share/gettext/gettext.h include/gettext.h
+-	fi
+-done
+-
+ test -f "include/gettext.h" || {
+ echo "Error: can't find <gettext.h> convenience C header."
+ echo "Please put a link to it by hand as include/gettext.h"
+-- 
+2.14.1
+

meta-networking/recipes-support/ndisc6/ndisc6/0001-replace-VLAIS-with-malloc-free-pair.patch

@@ -0,0 +1,124 @@
+From 3a7d5396e633e6c02a4583be7faf3d79d0d33748 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 31 Aug 2017 11:14:41 -0700
+Subject: [PATCH 1/2] replace VLAIS with malloc/free pair
+
+Makes it compatible with non-gnu compilers
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ src/trace-icmp.c |  7 +++++--
+ src/trace-tcp.c  | 14 ++++++++++----
+ src/trace-udp.c  |  7 +++++--
+ 3 files changed, 20 insertions(+), 8 deletions(-)
+
+diff --git a/src/trace-icmp.c b/src/trace-icmp.c
+index 842938e..c76cb54 100644
+--- a/src/trace-icmp.c
++++ b/src/trace-icmp.c
+@@ -43,16 +43,19 @@ send_echo_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	struct
+ 	{
+ 		struct icmp6_hdr ih;
+-		uint8_t payload[plen - sizeof (struct icmp6_hdr)];
++		uint8_t *payload;
+ 	} packet;
+ 	memset (&packet, 0, plen);
++	packet.payload = malloc(plen - sizeof (struct icmp6_hdr));
+ 
+ 	packet.ih.icmp6_type = ICMP6_ECHO_REQUEST;
+ 	packet.ih.icmp6_id = htons (getpid ());
+ 	packet.ih.icmp6_seq = htons ((ttl << 8) | (n & 0xff));
+ 	(void)port;
+ 
+-	return send_payload (fd, &packet.ih, plen, ttl);
++	ssize_t ret = send_payload (fd, &packet.ih, plen, ttl);
++	free(packet.payload);
++	return ret;
+ }
+ 
+ 
+diff --git a/src/trace-tcp.c b/src/trace-tcp.c
+index 940f918..62d22ff 100644
+--- a/src/trace-tcp.c
++++ b/src/trace-tcp.c
+@@ -54,10 +54,11 @@ send_syn_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	struct
+ 	{
+ 		struct tcphdr th;
+-		uint8_t payload[plen - sizeof (struct tcphdr)];
++		uint8_t *payload;
+ 	} packet;
+ 
+ 	memset (&packet, 0, sizeof (packet));
++	packet.payload = malloc(plen - sizeof (struct tcphdr));
+ 	packet.th.th_sport = sport;
+ 	packet.th.th_dport = port;
+ 	packet.th.th_seq = htonl ((ttl << 24) | (n << 16) | (uint16_t)getpid ());
+@@ -65,7 +66,9 @@ send_syn_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	packet.th.th_flags = TH_SYN | (ecn ? (TH_ECE | TH_CWR) : 0);
+ 	packet.th.th_win = htons (TCP_WINDOW);
+ 
+-	return send_payload (fd, &packet, plen, ttl);
++	ssize_t ret = send_payload (fd, &packet, plen, ttl);
++	free(packet.payload);
++	return ret;
+ }
+ 
+ 
+@@ -131,10 +134,11 @@ send_ack_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	struct
+ 	{
+ 		struct tcphdr th;
+-		uint8_t payload[plen - sizeof (struct tcphdr)];
++		uint8_t *payload;
+ 	} packet;
+ 
+ 	memset (&packet, 0, sizeof (packet));
++	packet.payload = malloc(plen - sizeof (struct tcphdr));
+ 	packet.th.th_sport = sport;
+ 	packet.th.th_dport = port;
+ 	packet.th.th_ack = htonl ((ttl << 24) | (n << 16) | (uint16_t)getpid ());
+@@ -142,7 +146,9 @@ send_ack_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	packet.th.th_flags = TH_ACK;
+ 	packet.th.th_win = htons (TCP_WINDOW);
+ 
+-	return send_payload (fd, &packet, plen, ttl);
++	ssize_t ret = send_payload (fd, &packet, plen, ttl);
++	free(packet.payload);
++	return ret;
+ }
+ 
+ 
+diff --git a/src/trace-udp.c b/src/trace-udp.c
+index 4adde6b..a6cbb07 100644
+--- a/src/trace-udp.c
++++ b/src/trace-udp.c
+@@ -46,9 +46,10 @@ send_udp_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	struct
+ 	{
+ 		struct udphdr uh;
+-		uint8_t payload[plen - sizeof (struct udphdr)];
++		uint8_t *payload;
+ 	} packet;
+ 	memset (&packet, 0, plen);
++	packet.payload = malloc(plen - sizeof (struct udphdr));
+ 
+ 	(void)n;
+ 	packet.uh.uh_sport = sport;
+@@ -61,7 +62,9 @@ send_udp_probe (int fd, unsigned ttl, unsigned n, size_t plen, uint16_t port)
+ 	/*if (plen > sizeof (struct udphdr))
+ 		packet.payload[0] = (uint8_t)ttl;*/
+ 
+-	return send_payload (fd, &packet, plen, ttl);
++	ssize_t ret = send_payload (fd, &packet, plen, ttl);
++	free(packet.payload);
++	return ret;
+ }
+ 
+ 
+-- 
+2.14.1
+

meta-networking/recipes-support/ndisc6/ndisc6/0002-Do-not-undef-_GNU_SOURCE.patch

@@ -0,0 +1,30 @@
+From 2a50154fbce38fd36be7e14f5cd4a8b03c65c72f Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 31 Aug 2017 11:15:37 -0700
+Subject: [PATCH 2/2] Do not undef _GNU_SOURCE
+
+There are functions from tcp.h which are under _GNU_SOURCE
+in musl
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ src/trace-tcp.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/trace-tcp.c b/src/trace-tcp.c
+index 62d22ff..380008e 100644
+--- a/src/trace-tcp.c
++++ b/src/trace-tcp.c
+@@ -21,7 +21,6 @@
+ # include <config.h>
+ #endif
+ 
+-#undef _GNU_SOURCE
+ #define _DEFAULT_SOURCE 1
+ 
+ #include <string.h>
+-- 
+2.14.1
+

meta-networking/recipes-support/ndisc6/ndisc6_git.bb

@@ -3,22 +3,37 @@ IPv6 networks, including ndisc6, rdisc6, tcptraceroute6 and traceroute6."
 SECTION = "net"
 HOMEPAGE = "http://www.remlab.net/ndisc6/"
 LICENSE = "GPL-2.0"
-
-# The tcptraceroute6 and tracert6 commands depend on rltraceroute6 to
-# perform the actual trace operation.
-RDEPENDS_${PN}-tcptraceroute6 = "${PN}-rltraceroute6"
-RDEPENDS_${PN}-tracert6 = "${PN}-rltraceroute6"
-RDEPENDS_${PN}-misc += "perl"
-
-SRC_URI = "http://www.remlab.net/files/ndisc6/ndisc6-${PV}.tar.bz2 \
-"
-SRC_URI[md5sum] = "21afdaa3a5a5c1ce50eb7f2b7d795989"
-SRC_URI[sha256sum] = "0f41d6caf5f2edc1a12924956ae8b1d372e3b426bd7b11eed7d38bc974eec821"
-
 LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
 
+PV = "1.0.4+git${SRCPV}"
+SRCREV = "4c794b5512d23c649def1f94a684225dcbb6ac3e"
+SRC_URI = "git://git.remlab.net/git/ndisc6.git;protocol=http \
+           file://0001-replace-VLAIS-with-malloc-free-pair.patch \
+           file://0002-Do-not-undef-_GNU_SOURCE.patch \
+           file://0001-autogen-Do-not-symlink-gettext.h-from-build-host.patch \
+           "
+
+S = "${WORKDIR}/git"
+
 inherit autotools gettext
 
+EXTRA_OECONF += "PERL=${USRBINPATH}/perl"
+
+LDFLAGS += "-fuse-ld=gold"
+TOOLCHAIN = "gcc"
+
+do_configure_prepend() {
+    cp ${STAGING_DATADIR_NATIVE}/gettext/gettext.h ${S}/include
+    ${S}/autogen.sh
+}
+
+do_install_append () {
+    rm -rf ${D}${localstatedir}
+    # Enable SUID bit for applications that need it
+    chmod 4555 ${D}${bindir}/rltraceroute6
+    chmod 4555 ${D}${bindir}/ndisc6
+    chmod 4555 ${D}${bindir}/rdisc6
+}
 ALLOW_EMPTY_${PN} = "1"
 
 # Split into seperate packages since we normal don't want them all
@@ -49,6 +64,12 @@ or IPv4."
 DESCRITPION_${PN}-rdnssd       = "Daemon to autoconfigure the list of DNS \
 servers through slateless IPv6 autoconfiguration."
 
+# The tcptraceroute6 and tracert6 commands depend on rltraceroute6 to
+# perform the actual trace operation.
+RDEPENDS_${PN}-tcptraceroute6 = "${PN}-rltraceroute6"
+RDEPENDS_${PN}-tracert6 = "${PN}-rltraceroute6"
+RDEPENDS_${PN}-misc += "perl"
+
 do_install_append () {
     rm -rf ${D}${localstatedir}
     # Enable SUID bit for applications that need it