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Makefile: add Debian packaging targets
Add 'package' target to Makefile that, based on the 'GOOS', builds the platform-appropriate package. For now, support only binary .deb packages (corresponding to a 'GOOS' of 'linux'); if the 'GOOS' is unsupported, 'make' will exit with an error. The .deb packaging process is broken into three steps, each corresponding to a target in the Makefile: 1. Build the executables. 2. Copy the executables & any symlinks into the appropriate file structure for running 'dpkg-deb'. 3. Generate the control file, copy the maintainer script(s) [1], and build the package with 'dpkg-deb'. Additionally, the 'check-arch' and 'check-version' targets verify that the 'GOARCH' is supported for packaging on the platform and that a version string is set, respectively. [1] https://www.debian.org/doc/debian-policy/ap-flowcharts.html Signed-off-by: Victoria Dye <[email protected]>
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‎.gitignore‎

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/git-bundle-server
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/git-bundle-web-server
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/bin/
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/_dist/

‎.vscode/settings.json‎

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"editor.wordWrap": "off",
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"files.trimTrailingWhitespace": true,
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},
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"[makefile]": {
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"editor.detectIndentation": false,
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"editor.insertSpaces": false,
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"editor.tabSize": 8,
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"editor.wordWrap": "off",
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"files.trimTrailingWhitespace": true,
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},
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"[shellscript]": {
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"editor.detectIndentation": false,
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"editor.insertSpaces": false,
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"editor.tabSize": 8,
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"editor.wordWrap": "off",
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"files.trimTrailingWhitespace": true,
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},
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"files.associations": {
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"*.md": "markdown"
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"*.md": "markdown",
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"*.sh": "shellscript",
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"prerm": "shellscript",
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"Makefile": "makefile"
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}
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}

‎Makefile‎

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# Default target
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build:
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# Project metadata (note: to package, VERSION *must* be set by the caller)
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NAME := git-bundle-server
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VERSION :=
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PACKAGE_REVISION := 1
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# Helpful paths
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BINDIR := $(CURDIR)/bin
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DISTDIR := $(CURDIR)/_dist
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# Platform information
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GOOS := $(shell go env GOOS)
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GOARCH := $(shell go env GOARCH)
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# Packaging information
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SUPPORTED_PACKAGE_GOARCHES := amd64 arm64
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PACKAGE_ARCH := $(GOARCH)
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# Build targets
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.PHONY: build
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build:
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$(RM) -r $(BINDIR)
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@mkdir -p $(BINDIR)
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GOOS="$(GOOS)" GOARCH="$(GOARCH)" go build -o $(BINDIR) ./...
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# Packaging targets
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.PHONY: check-arch
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check-arch:
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$(if $(filter $(GOARCH),$(SUPPORTED_PACKAGE_GOARCHES)), , \
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$(error cannot create package for GOARCH "$(GOARCH)"; \
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supported architectures are: $(SUPPORTED_PACKAGE_GOARCHES)))
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.PHONY: check-version
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check-version:
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$(if $(VERSION), , $(error version is undefined))
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ifeq ($(GOOS),linux)
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# Linux binary .deb file
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# Steps:
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# 1. Layout files in _dist/deb/root/ as they'll be installed (unlike MacOS
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# .pkg packages, symlinks created in the payload are preserved, so we
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# create them here to avoid doing so in a post-install step).
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# 2. Create the binary deb package in _dist/deb/.
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# Platform-specific variables
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DEBDIR := $(DISTDIR)/deb
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DEB_FILENAME := $(DISTDIR)/$(NAME)_$(VERSION)-$(PACKAGE_REVISION)_$(PACKAGE_ARCH).deb
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# Targets
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$(DEBDIR)/root: check-arch build
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@echo
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@echo "======== Formatting package contents ========"
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@build/package/layout-unix.sh --bindir="$(BINDIR)" \
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--include-symlinks \
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--output="$(DEBDIR)/root"
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$(DEB_FILENAME): check-version $(DEBDIR)/root
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@echo
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@echo "======== Creating binary Debian package ========"
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@build/package/deb/pack.sh --payload="$(DEBDIR)/root" \
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--arch="$(PACKAGE_ARCH)" \
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--version="$(VERSION)" \
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--output="$(DEB_FILENAME)"
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.PHONY: package
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package: $(DEB_FILENAME)
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else
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# Packaging not supported for platform, exit with error.
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.PHONY: package
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package:
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$(error cannot create package for GOOS "$(GOOS)")
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endif
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# Cleanup targets
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.PHONY: clean
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clean:
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go clean ./...
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$(RM) -r $(BINDIR)
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$(RM) -r $(DISTDIR)

‎build/package/deb/pack.sh‎

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#!/bin/bash
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die () {
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echo "$*" >&2
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exit 1
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}
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# Directories
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THISDIR="$( cd "$(dirname "$0")" ; pwd -P )"
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# Local paths
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UNINSTALLER="$THISDIR/uninstall.sh"
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# Parse script arguments
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for i in "$@"
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do
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case "$i" in
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--payload=*)
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DEBROOT="${i#*=}"
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shift # past argument=value
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;;
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--arch=*)
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ARCH="${i#*=}"
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shift # past argument=value
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;;
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--version=*)
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VERSION="${i#*=}"
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shift # past argument=value
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;;
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--output=*)
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DEBOUT="${i#*=}"
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shift # past argument=value
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;;
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*)
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die "unknown option '$i'"
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;;
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esac
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done
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# Perform pre-execution checks
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if [ -z "$DEBROOT" ]; then
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die "--payload was not set"
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elif [ ! -d "$DEBROOT" ]; then
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die "Could not find '$DEBROOT'. Did you run layout-unix.sh first?"
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fi
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if [ -z "$ARCH" ]; then
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die "--arch was not set"
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fi
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if [ -z "$VERSION" ]; then
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die "--version was not set"
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fi
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if [ -z "$DEBOUT" ]; then
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die "--output was not set"
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fi
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# Exit as soon as any line fails
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set -e
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# Cleanup old package
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if [ -e "$DEBOUT" ]; then
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echo "Deleting old package '$DEBOUT'..."
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rm -f "$DEBOUT"
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fi
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# Ensure the parent directory for the component exists
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mkdir -p "$(dirname "$DEBOUT")"
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# Build .deb
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mkdir -p "$DEBROOT/DEBIAN"
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# Create the debian control file
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cat >"$DEBROOT/DEBIAN/control" <<EOF
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Package: git-bundle-server
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Version: $VERSION
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Section: vcs
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Priority: optional
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Architecture: $ARCH
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Depends:
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Maintainer: Git Bundle Server <[email protected]>
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Description: A self-hostable Git bundle server.
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EOF
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dpkg-deb -Zxz --build "$DEBROOT" "$DEBOUT"

‎build/package/deb/scripts/prerm‎

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#!/bin/bash
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set -e
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# Stop & cleanup the web server
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/usr/local/git-bundle-server/bin/git-bundle-server web-server stop --remove
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exit 0

‎build/package/layout-unix.sh‎

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#!/bin/bash
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die () {
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echo "$*" >&2
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exit 1
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}
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# Parse script arguments
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for i in "$@"
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do
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case "$i" in
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--bindir=*)
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BINDIR="${i#*=}"
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shift # past argument=value
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;;
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--include-symlinks)
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INCLUDE_SYMLINKS=1
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shift # past argument
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;;
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--output=*)
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PAYLOAD="${i#*=}"
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shift # past argument=value
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;;
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*)
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die "unknown option '$i'"
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;;
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esac
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done
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# Perform pre-execution checks
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if [ -z "$BINDIR" ]; then
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die "--bindir was not set"
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fi
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if [ -z "$PAYLOAD" ]; then
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die "--output was not set"
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fi
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# Exit as soon as any line fails
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set -e
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# Cleanup any old payload directory
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if [ -d "$PAYLOAD" ]; then
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echo "Cleaning old output directory '$PAYLOAD'..."
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rm -rf "$PAYLOAD"
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fi
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# Ensure payload directory exists
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INSTALL_TO="$PAYLOAD/usr/local/git-bundle-server/"
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mkdir -p "$INSTALL_TO"
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# Copy built binaries
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echo "Copying binaries..."
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cp -R "$BINDIR/." "$INSTALL_TO/bin"
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# Create symlinks
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if [ -n "$INCLUDE_SYMLINKS" ]; then
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LINK_TO="$DEBROOT/usr/local/bin/"
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mkdir -p "$LINK_TO"
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echo "Creating symlinks..."
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for program in "$INSTALL_TO"/bin/*
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do
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ln -s -r "$program" "$LINK_TO/$(basename $program)"
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done
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fi
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echo "Layout complete."

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