|author||Harald Welte <firstname.lastname@example.org>||2017-08-11 13:47:24 +0200|
|committer||Harald Welte <email@example.com>||2017-08-11 13:48:14 +0200|
Use osmocom-style git-version-gen / .version magic
This generates the version number from the latest tag + git history Change-Id: I71e1c3f8f534d9e9690c94068eccdee29a6fee12
Diffstat (limited to 'git-version-gen')
1 files changed, 151 insertions, 0 deletions
diff --git a/git-version-gen b/git-version-gen
new file mode 100755
@@ -0,0 +1,151 @@
+# Print a version string.
+# Copyright (C) 2007-2010 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 <http://www.gnu.org/licenses/>.
+# 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]),
+# 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
+# echo $(VERSION) > $@-t && mv $@-t $@
+# echo $(VERSION) > $(distdir)/.tarball-version
+case $# in
+ 1) ;;
+ *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;;
+# First see if there is a tarball-only version file.
+# then try "git describe", then default.
+if test -f $tarball_version_file
+ v=`cat $tarball_version_file` || exit 1
+ case $v in
+ *$nl*) v= ;; # reject multi-line output
+ [0-9]*) ;;
+ *) v= ;;
+ test -z "$v" \
+ && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
+if test -n "$v"
+ : # use $v
+ v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \
+ || git describe --abbrev=4 HEAD 2>/dev/null` \
+ && case $v in
+ [0-9]*) ;;
+ v[0-9]*) ;;
+ *) (exit 1) ;;
+ # 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/-.*//'`
+ numcommits=`git rev-list "$vtag"..HEAD | wc -l`
+ v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
+ # Change the first '-' to a '.', so version-comparing tools work properly.
+ # Remove the "g" in git describe's output string, to save a byte.
+ v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
+v=`echo "$v" |sed 's/^v//'`
+# Don't declare a version "dirty" merely because a time stamp has changed.
+git status > /dev/null 2>&1
+dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
+case "$dirty" in
+ '') ;;
+ *) # Append the suffix only if there isn't one already.
+ case $v in
+ *-dirty) ;;
+ *) v="$v-dirty" ;;
+ esac ;;
+# Omit the trailing newline, so that m4_esyscmd can use the result directly.
+echo "$v" | tr -d '\012'
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"