dropwatch: link with libintl if present

binutils libbfd links to libintl if present, so dropwatch needs it too.
Ugly hardcoded LDFLAGS, but then that's what the dropwatch Makefile
does. Fixes:
http://autobuild.buildroot.net/results/549/54917e7943143e47263b60b4eee3dfc6f0801407/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/dropwatch/dropwatch.mk

@@ -11,20 +11,28 @@ DROPWATCH_DEPENDENCIES = binutils libnl readline host-pkgconf
 DROPWATCH_LICENSE = GPLv2
 DROPWATCH_LICENSE_FILES = COPYING
 
+# libbfd may be linked to libintl
+# Ugly... but LDFLAGS are hardcoded anyway
+ifeq ($(BR2_NEEDS_GETTEXT_IF_LOCALE),y)
+DROPWATCH_LDFLAGS = LDFLAGS="-lintl -lbfd -lreadline -lnl-3 -lnl-genl-3"
+endif
+
 define DROPWATCH_BUILD_CMDS
-  $(TARGET_CONFIGURE_OPTS) $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) build
+	$(TARGET_CONFIGURE_OPTS) $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		$(DROPWATCH_LDFLAGS) build
 endef
 
 define DROPWATCH_CLEAN_CMDS
-  $(TARGET_CONFIGURE_OPTS) $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) clean
+	$(TARGET_CONFIGURE_OPTS) $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) clean
 endef
 
 define DROPWATCH_INSTALL_TARGET_CMDS
-  $(INSTALL) -D -m 0755 $(@D)/src/dropwatch $(TARGET_DIR)/usr/bin/dropwatch
+	$(INSTALL) -D -m 0755 $(@D)/src/dropwatch \
+		$(TARGET_DIR)/usr/bin/dropwatch
 endef
 
 define DROPWATCH_UNINSTALL_CMDS
-  rm -f $(TARGET_DIR)/usr/bin/dropwatch
+	rm -f $(TARGET_DIR)/usr/bin/dropwatch
 endef
 
 $(eval $(generic-package))