add install target

Makefile

@@ -90,3 +90,8 @@ clobber: clean
 mdb/liblmdb.a:
 	(cd mdb && make)
 
+install: ot-recorder ocat
+	mkdir -p $(BUILDROOT)$(INSTALLDIR)/{bin,sbin}
+	mkdir -p $(STORAGEDEFAULT)
+	install --mode 0755 ot-recorder $(BUILDROOT)$(INSTALLDIR)/sbin
+	install --mode 0755 ocat $(BUILDROOT)$(INSTALLDIR)/bin

config.mk.in

@@ -1,5 +1,7 @@
 # Select features you want. Default is fine for most installations
 
+INSTALLDIR = /usr/local
+
 # Do you want recorder's built-in HTTP REST API?
 HAVE_HTTP ?= yes