Create OS X package with preinstall and postinstall scripts

create-osx-package.sh

#!/bin/bash

##
# Create the directory skeleton for a new package and a Makefile to build it
##

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 \"package name\""
	exit 1
fi

ROOT_DIR=/tmp
PACKAGE_DIR="$ROOT_DIR/$1"

# create the directory skeleton
/bin/mkdir -p "$PACKAGE_DIR/files" "$PACKAGE_DIR/scripts"

# convert the package name in the Makefile to lower case and replace spaces with hyphens
PACKAGE_NAME=`echo "$1" | tr '[:upper:]' '[:lower:]' | tr ' ' '-'`

# create the Makefile
/bin/cat > "$PACKAGE_DIR/Makefile" << EOF
NAME="${PACKAGE_NAME}"
IDENTIFIER="au.com.company.\$(NAME)"
VERSION="1.0"
INSTALL_LOCATION="/Applications/"

all:
	@/bin/mkdir target
	@/usr/bin/pkgbuild \\
		--root files/ \\
		--install-location \$(INSTALL_LOCATION) \\
		--scripts scripts/ \\
		--identifier \$(IDENTIFIER) \\
		--version \$(VERSION) \\
		"target/\$(NAME).pkg"

clean:
	@/bin/rm -rf target
EOF

# create a README file
/bin/cat > "$PACKAGE_DIR/README.md" << EOF
# $1

TODO: tell us about this package
EOF

# place the files to package in the $PACKAGE_DIR/files directory
# place scripts named 'preinstall'/'postinstall' in the $PACKAGE_DIR/scripts directory along with any resources
# make sure to chmod +x the scripts
# if there is no payload (i.e. just scripts) add the '--nopayload' parameter to the 'pkgbuild' command