Improve IPv6 RA support by allowing dhcpcd to manage the address and routesdhcpcd-5.6.0

instead of the kernel. dhcpcd will only do this if RA is disabled in the kernel
or dhcpcd has been instructed to do this via dhcpcd.conf(5) ipv6ra_own and
ipv6ra_own_default directives.

Send and process IPv6 Neighbor Solicitions and Adverts to prove router
reachability. If a router cannot be reached in this way then it is expired.

When debugging, all ND messages are displayed which will create a lot of log
spam.

To ease packaging, ./configure now accepts LDFLAGS and --enable-static.

1 files changed, 37 insertions, 0 deletions

diff --git a/configure b/configure
index b3344970..7e3bfafe 100755
--- a/configure
+++ b/configure
@@ -13,6 +13,7 @@ HOST=
 TARGET=
 DEBUG=
 FORK=
+STATIC=
 INCLUDEDIR=
 
 for x do
@@ -27,6 +28,8 @@ for x do
 	--fork) FORK=$var;;
 	--disable-fork) FORK=no;;
 	--enable-fork) FORK=yes;;
+	--disable-static) STATIC=no;;
+	--enable-static) STATIC=yes;;
 	--prefix) prefix=$var;;
 	--sysconfdir) SYSCONFDIR=$var;;
 	--bindir|--sbindir) SBINDIR=$var;;
@@ -194,6 +197,12 @@ fi
 if [ -n "$CPPLAGS" ]; then
 	echo "CPPLAGS=		$CPPLAGS" >>$CONFIG_MK
 fi
+if [ -n "$LDFLAGS" ]; then
+	echo "LDFLAGS=		$LDFLAGS" >>$CONFIG_MK
+fi
+if [ "$STATIC" = yes ]; then
+	echo "LDFLAGS+=	-static" >>$CONFIG_MK
+fi
 for x in $INCLUDEDIR; do
 	echo "CPPFLAGS+=	-I$x" >>$CONFIG_MK
 done
@@ -370,6 +379,34 @@ if [ "$STRLCPY" = no ]; then
 	echo "#include \"compat/strlcpy.h\"" >>$CONFIG_H
 fi
 
+if [ -z "$TAILQ_FOREACH_SAFE" ]; then
+	printf "Testing for TAILQ_FOREACH_SAFE ... "
+	cat <<EOF >_queue.c
+#include <sys/queue.h>
+int main(void) {
+#ifndef TAILQ_FOREACH_SAFE
+#error TAILQ_FOREACH_SAFE
+#endif
+	return 0;
+}
+EOF
+	if $XCC _queue.c -o _queue 2>/dev/null; then
+		TAILQ_FOREACH_SAFE=yes
+	else
+		TAILQ_FOREACH_SAFE=no
+	fi
+	echo "$TAILQ_FOREACH_SAFE"
+	rm -f _queue.c _queue
+fi
+if [ "$TAILQ_FOREACH_SAFE" = no ]; then
+	cat <<EOF >>$CONFIG_H
+#define	TAILQ_FOREACH_SAFE(var, head, field, next)			\
+	for ((var) = TAILQ_FIRST((head));				\
+	    (var) && ((next) = TAILQ_NEXT((var), field), 1);		\
+	    (var) = (next))
+EOF
+fi
+
 if [ -z "$SERVICECMD" ]; then
 	printf "Checking for OpenRC ... "
 	if [ -x /sbin/rc-service ]; then