+ifneq (, $(filter $(OS), DragonFly FreeBSD OpenBSD))
+CFLAGS+=-I/usr/local/include/
+LDFLAGS+=-L/usr/local/lib/
+endif
+
+ifeq ($(OS),NetBSD)
+LIBS+=-lprop
+endif
+
+# This probably applies for any pkgsrc based system
+ifneq (, $(filter $(OS), NetBSD DragonFly))
+CFLAGS+=-I/usr/pkg/include/
+LDFLAGS+=-L/usr/pkg/lib/
+endif
+
+V ?= 0
+ifeq ($(V),0)
+# Don’t print command lines which are run
+.SILENT: