tunctl: fix QA warning for GNU_HASH

Add LDFLAGS variable to Makefile so that extra linker flags can be sent
via this variable.

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>
(cherry picked from commit 294d7126ff)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-support/tunctl/tunctl.inc

@@ -3,7 +3,9 @@ SECTION = "net"
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://tunctl.c;beginline=1;endline=4;md5=ff3a09996bc5fff6bc5d4e0b4c28f999"
 
-SRC_URI = "${SOURCEFORGE_MIRROR}/tunctl/tunctl-${PV}.tar.gz"
+SRC_URI = "${SOURCEFORGE_MIRROR}/tunctl/tunctl-${PV}.tar.gz \
+           file://makefile-add-ldflags.patch \
+          "
 
 do_compile() {
     oe_runmake tunctl

meta-networking/recipes-support/tunctl/tunctl/makefile-add-ldflags.patch

@@ -0,0 +1,19 @@
+Add LDFLAGS variable to Makefile, make sure the extra linker flags can be passed.
+
+Upstream-Status: Pending
+
+Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
+
+diff --git a/Makefile b/Makefile
+index a0aa7f6..d6ce2c7 100644
+--- a/Makefile
++++ b/Makefile
+@@ -14,7 +14,7 @@ MAN_DIR ?= /usr/share/man/man$(MANS)
+ all : $(BIN) $(MAN)
+ 
+ $(BIN) : $(BIN).c
+-	$(CC) $(CFLAGS) -o $(BIN) $(BIN).c
++	$(CC) $(CFLAGS) ${LDFLAGS} -o $(BIN) $(BIN).c
+ 
+ $(MAN) : $(PACKAGE).sgml
+ 	docbook2man $(PACKAGE).sgml