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Use git describe to present version number to configure.ac

Browse source 
gitdesc.sh assumes tag will have format v#.### and will return
major version, minor version, and micro version depending on
command.
gitdesc.sh will also add tag revision and HEAD commit if tag is
not equal to HEAD. So lrzip version may appear as
`#.###' or
`#.###-R-#######'
where `R' is count of commits since last tag.
usage
gitdesc.sh command [-r]
where command is one of:
all - entire git describe
commit - commit, omitting v
tagrev - tag revision count
major - major release version
ninor - minor release version
micro - micro release version + [tag release count-HEAD commit]
version - M.mic
-r -- get release tag only
This commit is contained in:
Peter Hyman 2020-12-24 10:37:13 -06:00
parent ff04150aaa
commit c2001e2281
2 changed files with 108 additions and 3 deletions
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6
configure.ac
View file

@ -1,8 +1,8 @@
##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
m4_define([v_maj], [0])
m4_define([v_min], [6])
m4_define([v_mic], [31])
m4_define([v_maj], [m4_esyscmd_s([./util/gitdesc.sh major])])
m4_define([v_min], [m4_esyscmd_s([./util/gitdesc.sh minor])])
m4_define([v_mic],[m4_esyscmd_s([./util/gitdesc.sh micro])])
##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
m4_define([v_v], m4_join([], v_min, v_mic))
m4_define([v_ver], [v_maj.v_v])

105
util/gitdesc.sh Executable file
View file

@ -0,0 +1,105 @@
#?bin/sh
# Peter Hyman, pete@peterhyman.com
# December 2020
# This program will return commit references based on Tags and Annotated Tags from git describe
usage() {
cat >&2 <<EOF
$(basename $0) command [-r]
all - entire git describe
commit - commit, omitting v
tagrev - tag revision count
major - major release version
ninor - minor release version
micro - micro release version
version - M.mic + [tag release count-HEAD commit]
-r -- get release tag only
EOF
exit 1
}
# showw message and usage
die() {
echo "$1"
usage
}
# return variables
# everything, with leading `v' and leading `g' for commits
describe_tag=
# abbreviated commit
commit=
# count of commits from last tag
tagrev=
# major version
major=
# minor version
minor=
# micro version
micro=
# get release or tag?
tagopt="--tags"
# get whole commit and parse
# if tagrev > 0 then add it and commit to micro version
# Expected format is:
# v#.###-g#######
init() {
describe_tag=$(git describe $tagopt --long --abbrev=7)
describe_tag=${describe_tag/v/}
describe_tag=${describe_tag/g/}
commit=$(echo $describe_tag | cut -d- -f3)
tagrev=$(echo $describe_tag | cut -d- -f2)
version=$(echo $describe_tag | cut -d- -f1)
micro=${version: -2}
[ $tagrev -gt 0 ] && micro=$micro-$tagrev-$commit
minor=${version: -3:1}
major=$(echo $version | cut -d. -f1)
}
[ ! $(which git) ] && die "Something very wrong: git not found."
[ $# -eq 0 ] && die "Must provide a command and optional argument."
# are we getting a release only?
if [ $# -eq 2 ]; then
if [ $2 = "-r" ]; then
tagopt=""
else
die "Invalid option. Must be -r or nothing."
fi
fi
init
case "$1" in
"all" )
retval=$describe_tag
;;
"commit" )
retval=$commit
;;
"tagrev" )
retval=$tagrev
;;
"version" )
retval=$version
;;
"major" )
retval=$major
;;
"minor" )
retval=$minor
;;
"micro" )
retval=$micro
;;
* )
die "Invalid command."
;;
esac
echo $retval
exit 0