AC_SET_VERSIONLEVEL(VARNAME [,VERSION])
, 

2001-07-26

Guido U. Draheim <guidod@gmx.de>

GPLWithACException
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. As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts

guidod's Miscellaneous (released)

if the VERSION is ommitted, shellvar $VERSION is used as defined by AM_INIT_AUTOMAKE's second argument.

The versionlevel is the numeric representation of the given version string, thereby assuming the inputversion is a string with (maximal) three decimal numbers seperated by "."-dots. A "-patch" adds a percent.

typical usage:

AM_INIT_AUTOMAKE(mypkg,4.12.3)
AC_SET_VERSIONLEVEL(MYPKG_VERSION)
AC_DEFINE_UNQUOTED(MYPKG_VERSION, $MYPKG_VERSION, [package version])

(this macro shall superced AC_DEFINE_VERSIONLEVEL at some day)

the version code has three digits per part which I feel is the most natural encoding - it makes it easier to be printf'd anyway

examples:

      3.0-beta1     3000001
      3.1           3010000
      3.11          3110000
      3.11-dirpatch 3111000
      3.11-patch6   3110006
      2.2.18        2020018
      2.0.112       2000112
      2.4.2         2040002
      2.4.2-pre     2040003
      2.4.2-pre5    2040003
      5.0-build125  5000125
      5.0           5000000
      0.30.17       30017

AC_DEFUN([AC_SET_VERSIONLEVEL],[dnl
AS_VAR_PUSHDEF([LVL], [$1_LEVEL])dnl
AS_VAR_PUSHDEF([MJR], [$1_MAJOR])dnl
AS_VAR_PUSHDEF([MNR], [$1_MINOR])dnl
AS_VAR_PUSHDEF([MCR], [$1_MICRO])dnl
LVL=`echo ifelse($2, , $VERSION, $2)`
test -n "$LVL" || LVL="$PACKAGE_VERSION"
LVL=`echo $LVL | sed -e "s:[[$as_cr_LETTERS-]]*:.:g" -e "s:[[^$as_cr_digits.]]::g" -e 's:[[.]]*:.:g' -e 's:^[[.]]*::'`
AC_MSG_CHECKING( $1 versionlevel $LVL)
case "$LVL" 
in *.*.*.|*.*.*.*|*.*.*) :
 MJR=`echo $LVL`
 MNR=`echo $MJR | sed -e 's/[[^.]]*[[.]]//'`
 MCR=`echo $MNR | sed -e 's/[[^.]]*[[.]]//'`
 MJR=`echo $MJR | sed -e 's/[[.]].*//'`
 MNR=`echo $MNR | sed -e 's/[[.]].*//'`
 MCR=`echo $MCR | sed -e 's/[[.]].*//'`
;; *.*.|*.*) :
 MJR=`echo $LVL`
 MNR=`echo $MJR | sed -e 's/[[^.]]*[[.]]//'`
 MJR=`echo $MJR | sed -e 's/[[.]].*//'`
 MNR=`echo $MNR | sed -e 's/[[.]].*//'`
 MCR=0
;; *.) :
 MJR=0
 MNR=`echo $LVL`
 MNR=`echo $MNR | sed -e 's/[[.]].*//'`
 MCR=0
;; esac
# we trust sed greedy-match backtracking to extract the last three digits 
# from each part, forming a nine-digit at the end.
$1=`echo 000$MJR.000$MNR.000$MCR | sed -e "s:\\(...\\)[[.]][[^.]]*\\((...\\))[[.]][[^.*]]\\((...\\)):\\1\\2\\3" -e "s:^0*::"`
AC_MSG_RESULT($[$1] ($MJR,$MNR,$MCR)
dnl AC_DEFINE_UNQUOTED( $1, $[$1], ifelse( $3, , $PACKAGE versionlevel, $3))
AS_VAR_POPDEF([MCR])dnl
AS_VAR_POPDEF([MNR])dnl
AS_VAR_POPDEF([MJR])dnl
AS_VAR_POPDEF([LVL])dnl
])