Add release script

.gitignore

@@ -2,3 +2,4 @@
 /vendor
 /bin
 /testdata
+/release

Makefile

@@ -5,6 +5,9 @@ test:
 watch:
 	modd	
 
+release:
+	script/release
+
 deps:
 	GO111MODULE=off go get -u golang.org/x/tools/cmd/godoc
 	GO111MODULE=off go get -u github.com/cortesi/modd/cmd/modd
@@ -29,4 +32,4 @@ doc:
 bin/keygen:
 	go build -o bin/keygen ./cmd/keygen
 
-.PHONY: test lint doc sequence-diagram bin/keygen
+.PHONY: test lint doc sequence-diagram bin/keygen release

script/release

@@ -0,0 +1,99 @@
+#!/bin/bash
+
+set -eo pipefail
+
+OS_TARGETS=(linux)
+ARCH_TARGETS=${ARCH_TARGETS:-amd64}
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+
+function build {
+
+  local name=$1
+  local srcdir=$2
+  local os=$3
+  local arch=$4
+
+  local dirname="$name-$os-$arch"
+  local destdir="$DIR/../release/$dirname"
+
+  rm -rf "$destdir"
+  mkdir -p "$destdir"
+
+  echo "building $dirname..."
+
+  CGO_ENABLED=0 GOOS="$os" GOARCH="$arch" go build \
+    -ldflags="-s -w" \
+    -gcflags=-trimpath="${PWD}" \
+    -asmflags=-trimpath="${PWD}" \
+    -o "$destdir/$name" \
+    "$srcdir"
+
+  if [ ! -z "$(which upx)" ]; then
+    upx --best "$destdir/$name"
+  fi
+
+}
+
+function copy {
+
+  local name=$1
+  local os=$2
+  local arch=$3
+  local src=$4
+  local dest=$5
+
+  local dirname="$name-$os-$arch"
+  local destdir="$DIR/../release/$dirname"
+
+  echo "copying '$src' to '$destdir/$dest'..."
+
+  mkdir -p "$(dirname $destdir/$dest)"
+
+  cp -rfL $src "$destdir/$dest"
+
+}
+
+function dump_default_conf {
+  # Generate and copy configuration file
+  local command=$1
+  local os=$2
+  local arch=$3
+  local tmp_conf=$(mktemp)
+
+  go run "$DIR/../cmd/$command" -dump-config > "$tmp_conf"
+  copy "$command" $os $arch "$tmp_conf" "$command.conf"
+  rm -f "$tmp_conf"
+}
+
+function compress {
+
+  local name=$1
+  local os=$2
+  local arch=$3
+
+  local dirname="$name-$os-$arch"
+  local destdir="$DIR/../release/$dirname"
+
+  echo "compressing $dirname..."
+  tar -czf "$destdir.tar.gz" -C "$destdir/../" "$dirname"
+}
+
+function release_keygen {
+  local os=$1
+  local arch=$2
+  build 'keygen' "$DIR/../cmd/keygen" $os $arch
+  copy 'keygen' $os $arch "$DIR/../README.md" "README.md"
+  compress 'keygen' $os $arch
+}
+
+
+function main {
+  for os in ${OS_TARGETS[@]}; do
+    for arch in ${ARCH_TARGETS[@]}; do
+      release_keygen $os $arch
+    done
+  done
+}
+
+main