From cdd799359b6f7050fc5e3aa128bf1776a95a8a68 Mon Sep 17 00:00:00 2001
From: Will <will@glozer.net>
Date: Fri, 27 May 2016 19:30:39 +0900
Subject: [PATCH] add build instructions

---
 INSTALL.md | 17 +++++++++++++++++
 circle.yml | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 INSTALL.md
 create mode 100644 circle.yml

diff --git a/INSTALL.md b/INSTALL.md
new file mode 100644
index 0000000..aa7b961
--- /dev/null
+++ b/INSTALL.md
@@ -0,0 +1,17 @@
+# arc - build instructions
+
+arc is written in Go and all dependencies are vendored so building can be
+as simple as running `go get github.com/wg/arc` or checking out the code
+into a Go workspace and running `go install github.com/wg/arc`.
+
+Building an executable that is identical to a released binary requires a
+number of conditions be met:
+
+  1. the Go toolchain version must be identical
+  2. GOROOT, GOPATH and PWD must be identical
+  3. the path separator character must be "/"
+
+The Go compiler creates executables with debug information containing
+filesystem paths of all packages used to build the executable as well as
+the working directory. Aside from that its output is deterministic, even
+when cross compiling.
diff --git a/circle.yml b/circle.yml
new file mode 100644
index 0000000..bfb9ef2
--- /dev/null
+++ b/circle.yml
@@ -0,0 +1,34 @@
+machine:
+  environment:
+    GOPATH:  /go
+    PROJECT: $CIRCLE_PROJECT_REPONAME
+    IMPORT:  github.com/$CIRCLE_PROJECT_USERNAME/$PROJECT
+    GOPKG:   go1.6.2.linux-amd64.tar.gz
+
+checkout:
+  post:
+    - sudo mkdir -p $GOPATH
+    - sudo chown $USER $GOPATH
+    - mkdir -p $GOPATH/src/$IMPORT
+    - cp -r  * $GOPATH/src/$IMPORT
+
+dependencies:
+  pre:
+    - sudo rm -rf /usr/local/go
+    - curl -O https://storage.googleapis.com/golang/$GOPKG
+    - sudo tar -xf $GOPKG -C /usr/local
+  override:
+    - echo 'export GOPATH=$GOPATH' >> ~/.circlerc
+
+test:
+  pre:
+    - go version
+    - go env
+  override:
+    - go test -v -race $IMPORT/...
+  post:
+    - cd /go && GOOS=darwin  GOARCH=amd64 go build -o $CIRCLE_ARTIFACTS/darwin/amd64/$PROJECT      $IMPORT
+    - cd /go && GOOS=freebsd GOARCH=amd64 go build -o $CIRCLE_ARTIFACTS/freebsd/amd64/$PROJECT     $IMPORT
+    - cd /go && GOOS=linux   GOARCH=amd64 go build -o $CIRCLE_ARTIFACTS/linux/amd64/$PROJECT       $IMPORT
+    - cd /go && GOOS=windows GOARCH=amd64 go build -o $CIRCLE_ARTIFACTS/windows/amd64/$PROJECT.exe $IMPORT
+    - find $CIRCLE_ARTIFACTS -type f -exec shasum -a 256 {} \; | tee $CIRCLE_ARTIFACTS/sha256.txt