Add script to build release binaries

build_release_binaries.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -e
+
+if [[ -z "$VERSION" ]]; then
+    echo '$VERSION unset'
+    exit 1
+fi
+
+dir=$(mktemp -d --tmpdir restic-release-XXXXXX)
+echo "path is ${dir}"
+
+for R in       \
+    darwin/386     \
+    darwin/amd64   \
+    freebsd/386    \
+    freebsd/amd64  \
+    freebsd/arm    \
+    linux/386      \
+    linux/amd64    \
+    linux/arm      \
+    linux/arm64    \
+    openbsd/386   \
+    openbsd/amd64 \
+    windows/386    \
+    windows/amd64  \
+    ; do \
+
+    OS=$(dirname $R)
+    ARCH=$(basename $R)
+    filename=restic_${VERSION}_${OS}_${ARCH}
+
+    if [[ "$OS" == "windows" ]]; then
+        filename="${filename}.exe"
+    fi
+
+    echo $filename
+
+    go run ../build.go --goos $OS --goarch $ARCH --output ${filename}
+    if [[ "$OS" == "windows" ]]; then
+        zip ${filename%.exe}.zip ${filename}
+        rm ${filename}
+        mv ${filename%.exe}.zip ${dir}
+    else
+        bzip2 ${filename}
+        mv ${filename}.bz2 ${dir}
+    fi
+done
+
+echo "packing sources"
+git archive --format=tar --prefix=restic-$VERSION/ v$VERSION | gzip -n > restic-$VERSION.tar.gz
+mv restic-$VERSION.tar.gz ${dir}
+
+echo "creating checksums"
+pushd ${dir}
+sha256sum restic_*.{zip,bz2} > SHA256SUMS
+gpg --armor --detach-sign SHA256SUMS
+popd
+
+echo "creating source signature file"
+gpg --armor --detach-sign ${dir}/restic-$VERSION.tar.gz
+
+echo
+echo "done, path is ${dir}"