tweaks to build scripts

Makefile

@@ -14,4 +14,4 @@ clean:
 	rm -f *~ *.o swconfig
 
 install:
-	install -D swconfig $(DESTDIR)$(BINDIR)/swconfig
+	install -D swconfig $(DESTDIR)$(PREFIX)/sbin/swconfig

build.sh

 echo "will build swconfig now"
 if [ ! -f /usr/include/linux/switch.h ]; then
     echo "switch.h not found in kernel headers! Aborting"
-    exit
+    exit 1
 fi
 make clean && cd .. && tar -cvzf swconfig_15.04.orig.tar.gz swconfig && cd swconfig
 debuild -us -uc
\ No newline at end of file

debian/rules

 #!/usr/bin/make -f
+export DEB_CFLAGS_MAINT_APPEND  = -I /usr/include/libnl3/
 %:
-    dh $@
\ No newline at end of file
+	dh $@