[issue-15] reasonably support older linux distributions

.gitignore

@@ -1 +1,2 @@
 target
+/rust-*.tar.gz

Makefile

@@ -0,0 +1,41 @@
+RUST_VERSION = 1.16.0
+DOCKER_IMAGE = alexcrichton/rust-slave-dist:2015-10-20b
+RUST_TARBALL = rust-$(RUST_VERSION)-x86_64-unknown-linux-gnu.tar.gz
+RUST_SOURCE = https://static.rust-lang.org/dist/$(RUST_TARBALL)
+
+ifeq ($(shell uname -s),Darwin)
+all: linux darwin
+
+darwin: target/x86_64-apple-darwin/release/linkerd-tcp
+
+target/x86_64-apple-darwin/release/linkerd-tcp:
+	cargo build --release --verbose --target=x86_64-apple-darwin
+
+else
+all: linux
+endif
+
+linux: $(RUST_TARBALL) target/x86_64-unknown-linux-gnu/release/linkerd-tcp
+
+$(RUST_TARBALL):
+	curl -L -o $(RUST_TARBALL) $(RUST_SOURCE)
+
+target/x86_64-unknown-linux-gnu/release/linkerd-tcp: $(RUST_TARBALL)
+	docker pull $(DOCKER_IMAGE)
+	@docker run \
+    --rm -v $(shell pwd):/rust/app \
+    -u root \
+    -w /rust/app \
+    --entrypoint=/bin/bash \
+    $(DOCKER_IMAGE) \
+    -exc "cd /tmp && \
+    (gzip -dc /rust/app/$(RUST_TARBALL) | tar xf -) && \
+    ./rust-$(RUST_VERSION)-x86_64-unknown-linux-gnu/install.sh --without=rust-docs && \
+    cd /rust/app && \
+    cargo build --release --verbose --target=x86_64-unknown-linux-gnu"
+
+clean:
+	-rm -rf target
+
+distclean: clean
+	-rm -f $(RUST_TARBALL)

README.md

@@ -103,6 +103,18 @@ Try running the image with:
 docker run -v `pwd`/example.yml:/example.yml linkerd/linkerd-tcp:latest /example.yml
 ```
 
+To build linkerd/linkerd-tcp stand-alone binaries for Linux (requires docker), run:
+
+```bash
+make linux
+```
+
+To build linkerd/linkerd-tcp stand-alone binaries for macOS (requires macOS host), run:
+
+```bash
+make darwin
+```
+
 ## Code of Conduct ##
 
 This project is for everyone. We ask that our users and contributors take a few minutes to