From 66bfc0d5b200dca6a593ef9c1d78bcd03aab9844 Mon Sep 17 00:00:00 2001 From: Sami Kerola Date: Thu, 31 Mar 2011 14:44:42 +0200 Subject: [PATCH] build-sys: use git version as program version output The functionality copied is from gnulib. http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/git-version-gen;h=686f7031a6037445bfcb7b43fb4da3c8240d8575;hb=HEAD Signed-off-by: Sami Kerola --- Makefile.am | 2 +- build-aux/git-version-gen | 172 +++++++++++++++++++++++++++++++++++++++++++++ configure.ac | 4 +- 3 files changed, 176 insertions(+), 2 deletions(-) create mode 100755 build-aux/git-version-gen diff --git a/Makefile.am b/Makefile.am index fabe6f6..091465b 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1,6 +1,6 @@ ## Makefile.am -- Process this file with automake to produce Makefile.in -AUTOMAKE_OPTIONS = gnits +AUTOMAKE_OPTIONS = gnu ACLOCAL_AMFLAGS = -I m4 SUBDIRS = src man contrib diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen new file mode 100755 index 0000000..686f703 --- /dev/null +++ b/build-aux/git-version-gen @@ -0,0 +1,172 @@ +#!/bin/sh +# Print a version string. +scriptversion=2011-02-19.19; # UTC + +# Copyright (C) 2007-2011 Free Software Foundation, Inc. +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. +# It may be run two ways: +# - from a git repository in which the "git describe" command below +# produces useful output (thus requiring at least one signed tag) +# - from a non-git-repo directory containing a .tarball-version file, which +# presumes this script is invoked like "./git-version-gen .tarball-version". + +# In order to use intra-version strings in your project, you will need two +# separate generated version string files: +# +# .tarball-version - present only in a distribution tarball, and not in +# a checked-out repository. Created with contents that were learned at +# the last time autoconf was run, and used by git-version-gen. Must not +# be present in either $(srcdir) or $(builddir) for git-version-gen to +# give accurate answers during normal development with a checked out tree, +# but must be present in a tarball when there is no version control system. +# Therefore, it cannot be used in any dependencies. GNUmakefile has +# hooks to force a reconfigure at distribution time to get the value +# correct, without penalizing normal development with extra reconfigures. +# +# .version - present in a checked-out repository and in a distribution +# tarball. Usable in dependencies, particularly for files that don't +# want to depend on config.h but do want to track version changes. +# Delete this file prior to any autoconf run where you want to rebuild +# files to pick up a version string change; and leave it stale to +# minimize rebuild time after unrelated changes to configure sources. +# +# It is probably wise to add these two files to .gitignore, so that you +# don't accidentally commit either generated file. +# +# Use the following line in your configure.ac, so that $(VERSION) will +# automatically be up-to-date each time configure is run (and note that +# since configure.ac no longer includes a version string, Makefile rules +# should not depend on configure.ac for version updates). +# +# AC_INIT([GNU project], +# m4_esyscmd([build-aux/git-version-gen .tarball-version]), +# [bug-project@example]) +# +# Then use the following lines in your Makefile.am, so that .version +# will be present for dependencies, and so that .tarball-version will +# exist in distribution tarballs. +# +# BUILT_SOURCES = $(top_srcdir)/.version +# $(top_srcdir)/.version: +# echo $(VERSION) > $@-t && mv $@-t $@ +# dist-hook: +# echo $(VERSION) > $(distdir)/.tarball-version + +case $# in + 1|2) ;; + *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version" \ + '[TAG-NORMALIZATION-SED-SCRIPT]' + exit 1;; +esac + +tarball_version_file=$1 +tag_sed_script="${2:-s/x/x/}" +nl=' +' + +# Avoid meddling by environment variable of the same name. +v= +v_from_git= + +# First see if there is a tarball-only version file. +# then try "git describe", then default. +if test -f $tarball_version_file +then + v=`cat $tarball_version_file` || v= + case $v in + *$nl*) v= ;; # reject multi-line output + [0-9]*) ;; + *) v= ;; + esac + test -z "$v" \ + && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2 +fi + +if test -n "$v" +then + : # use $v +# Otherwise, if there is at least one git commit involving the working +# directory, and "git describe" output looks sensible, use that to +# derive a version string. +elif test "`git log -1 --pretty=format:x . 2>&1`" = x \ + && v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \ + || git describe --abbrev=4 HEAD 2>/dev/null` \ + && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \ + && case $v in + v[0-9]*) ;; + *) (exit 1) ;; + esac +then + # Is this a new git that lists number of commits since the last + # tag or the previous older version that did not? + # Newer: v6.10-77-g0f8faeb + # Older: v6.10-g0f8faeb + case $v in + *-*-*) : git describe is okay three part flavor ;; + *-*) + : git describe is older two part flavor + # Recreate the number of commits and rewrite such that the + # result is the same as if we were using the newer version + # of git describe. + vtag=`echo "$v" | sed 's/-.*//'` + commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \ + || { commit_list=failed; + echo "$0: WARNING: git rev-list failed" 1>&2; } + numcommits=`echo "$commit_list" | wc -l` + v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; + test "$commit_list" = failed && v=UNKNOWN + ;; + esac + + # Change the first '-' to a '.', so version-comparing tools work properly. + # Remove the "g" in git describe's output string, to save a byte. + v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; + v_from_git=1 +else + v=UNKNOWN +fi + +v=`echo "$v" |sed 's/^v//'` + +# Test whether to append the "-dirty" suffix only if the version +# string we're using came from git. I.e., skip the test if it's "UNKNOWN" +# or if it came from .tarball-version. +if test -n "$v_from_git"; then + # Don't declare a version "dirty" merely because a time stamp has changed. + git update-index --refresh > /dev/null 2>&1 + + dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty= + case "$dirty" in + '') ;; + *) # Append the suffix only if there isn't one already. + case $v in + *-dirty) ;; + *) v="$v-dirty" ;; + esac ;; + esac +fi + +# Omit the trailing newline, so that m4_esyscmd can use the result directly. +echo "$v" | tr -d "$nl" + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/configure.ac b/configure.ac index a5adc2d..eab7a1b 100644 --- a/configure.ac +++ b/configure.ac @@ -3,7 +3,9 @@ AC_PREREQ(2.64) AC_CONFIG_MACRO_DIR([m4]) -AC_INIT([dhcpd-pools],[2.14],[kerolasa@iki.fi],,[http://dhcpd-pools.sourceforge.net/]) +AC_INIT([dhcpd-pools], + m4_esyscmd([build-aux/git-version-gen .tarball-version]), + [kerolasa@iki.fi],,[http://dhcpd-pools.sourceforge.net/]) AM_INIT_AUTOMAKE AC_CONFIG_SRCDIR([src/dhcpd-pools.h]) AC_CONFIG_HEADERS([config.h]) -- 1.7.10.4