acinclude.m4: Do not set vswitchd_ovs_vswitchd_LDFLAGS

Commit d731058 used vswitchd_ovs_vswitchd_LDFLAGS to link with DPDK. This
made automake ignore AM_LDFLAGS while linking the daemon.

This commit explicitly adds AM_LDFLAGS to vswitchd_ovs_vswitchd_LDFLAGS and
moves it to vswitchd/automake.mk

Reported-by: Gurucharan Shetty <gshetty@nicira.com>
Suggested-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>

Author: ddiproietto

acinclude.m4

@@ -208,8 +208,8 @@ AC_DEFUN([OVS_CHECK_DPDK], [
     #
     # These options are specified inside a single -Wl directive to prevent
     # autotools from reordering them.
-    vswitchd_ovs_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
-    AC_SUBST([vswitchd_ovs_vswitchd_LDFLAGS])
+    DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
+    AC_SUBST([DPDK_vswitchd_LDFLAGS])
     AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
   else
     RTE_SDK=

vswitchd/automake.mk

@@ -15,6 +15,7 @@ vswitchd_ovs_vswitchd_LDADD = \
 	ofproto/libofproto.la \
 	lib/libsflow.la \
 	lib/libopenvswitch.la
+vswitchd_ovs_vswitchd_LDFLAGS = $(AM_LDFLAGS) $(DPDK_vswitchd_LDFLAGS)
 EXTRA_DIST += vswitchd/INTERNALS
 MAN_ROOTS += vswitchd/ovs-vswitchd.8.in