gen-ver.sh

   1 #!/bin/sh
   2 # gen-ver.sh for nomnom.
   3
   4 from_file()
   5 {
   6   VN=`cat $1 2>/dev/null`
   7   if test -n "$VN"; then
   8     echo $VN
   9     exit 0
  10   fi
  11 }
  12
  13 gen_version() # $1=path to top source dir
  14 {
  15   path=$1 ; [ -z $path ] && path=.
  16
  17   # First check if the version file exists and use its value
  18   versionfn="$path/VERSION"
  19   [ -f "$versionfn" ]  && from_file "$versionfn"
  20
  21   # If that file is not found, or fails (e.g. empty), parse from m4/version.m4
  22   m4="$path/m4/version.m4"
  23   VN=`perl -ne'/(\d+)\.(\d+)\.(\d+)/ && print "$1.$2.$3"' < "$m4"`
  24   [ -z $VN ] && exit $?
  25
  26   # Use the "git describe" instead, if .git is present
  27   if test -d "$path/.git" -o -f "$path/.git" ; then
  28     _VN=`git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null`
  29     [ -n "$_VN" ] && VN=$_VN
  30   fi
  31
  32   echo $VN
  33 }
  34
  35 help()
  36 {
  37   echo "Usage: $0 [-h] [top_srcdir]
  38 -h  Show this help and exit
  39 Run without options to print version. Define top_srcdir if run outside
  40 the top source directory."
  41   exit 0
  42 }
  43
  44 while [ $# -gt 0 ]
  45 do
  46   case "$1" in
  47     -h) help;;
  48     *) break;;
  49   esac
  50   shift
  51 done
  52
  53 gen_version $1