- add: shift tool from https://github.com/RavenX8/open-vpc

Makefile

@@ -0,0 +1,35 @@
+prog :=shift_tool
+
+debug ?=
+
+$(info debug is $(debug))
+
+ifdef debug
+  release :=
+  target :=debug
+  extension :=-debug
+else
+  release :=--release
+  target :=release
+  extension :=
+endif
+
+ifeq ($(PREFIX),)
+    PREFIX := /usr/local
+endif
+
+build:
+	cargo build $(release)
+
+install:
+	install -d $(DESTDIR)$(PREFIX)/bin
+	install -m 0755 target/$(target)/$(prog)$(extension) $(DESTDIR)$(PREFIX)/bin
+
+clean:
+	cargo clean
+
+
+all: build install
+
+help:
+	@echo "usage: make $(prog) [debug=1]"