1#!/bin/bash 2 3# Creates and updates the package_version information used by configure.ac 4# (or other makefiles). When run inside a git repository it will use the 5# version information that can be queried from it unless AUTO_UPDATE is set 6# to 'no'. If no version is currently known it will be set to 'unknown'. 7# 8# If called with the argument 'release', the PACKAGE_VERSION will be updated 9# even if AUTO_UPDATE=no, but the value of AUTO_UPDATE shall be preserved. 10# This is used to force a version update whenever `make dist` is run. 11# 12# The exit status is 1 if package_version is not modified, else 0 is returned. 13# 14# This script should NOT be included in distributed tarballs, because if a 15# parent directory contains a git repository we do not want to accidentally 16# retrieve the version information from it instead. Tarballs should ship 17# with only the package_version file. 18# 19# Ron <ron@debian.org>, 2012. 20 21SRCDIR=$(dirname $0) 22 23if [ -e "$SRCDIR/package_version" ]; then 24 . "$SRCDIR/package_version" 25fi 26 27if [ "$AUTO_UPDATE" = no ]; then 28 [ "$1" = release ] || exit 1 29else 30 AUTO_UPDATE=yes 31fi 32 33# We run `git status` before describe here to ensure that we don't get a false 34# -dirty from files that have been touched but are not actually altered in the 35# working dir. 36GIT_VERSION=$(cd "$SRCDIR" && git status > /dev/null 2>&1 \ 37 && git describe --tags --match 'v*' --dirty 2> /dev/null) 38GIT_VERSION=${GIT_VERSION#v} 39 40if [ -n "$GIT_VERSION" ]; then 41 42 [ "$GIT_VERSION" != "$PACKAGE_VERSION" ] || exit 1 43 PACKAGE_VERSION="$GIT_VERSION" 44 45elif [ -z "$PACKAGE_VERSION" ]; then 46 # No current package_version and no git ... 47 # We really shouldn't ever get here, because this script should only be 48 # included in the git repository, and should usually be export-ignored. 49 PACKAGE_VERSION="unknown" 50else 51 exit 1 52fi 53 54cat > "$SRCDIR/package_version" <<-EOF 55 # Automatically generated by update_version. 56 # This file may be sourced into a shell script or makefile. 57 58 # Set this to 'no' if you do not wish the version information 59 # to be checked and updated for every build. Most people will 60 # never want to change this, it is an option for developers 61 # making frequent changes that they know will not be released. 62 AUTO_UPDATE=$AUTO_UPDATE 63 64 PACKAGE_VERSION="$PACKAGE_VERSION" 65EOF 66