src/gmxlib/genversion.sh

   1 #!/bin/sh
   2
   3 # usage: genversion.sh PKGVERSION top_srcdir
   4 # Requires git 1.5.1 or later
   5
   6 PKGVERSION=$1
   7 SRCDIR=$2
   8 GITDIR=$SRCDIR/.git
   9
  10 if which git >/dev/null && test -d $GITDIR ; then
  11     # Get either -dirty or an empty string, depending on whether there are local changes.
  12     dirtystr=`(cd $SRCDIR && git diff-index --quiet HEAD) || echo "-dirty"`
  13     # Get date of the head commit as YYYYMMDD (commit date).
  14     # Git before 1.5.3 does not support any sensible date format,
  15     # so we need to massage the output.
  16     if git --git-dir=$GITDIR rev-list -n1 --pretty=format:%ci HEAD | grep '[0-9]\{4\}' >/dev/null 2>&1; then
  17         date=`git --git-dir=$GITDIR rev-list -n1 --pretty=format:%ci HEAD | sed -ne '/commit/!{s/ .*$//;s/-//g;p;}'`
  18     else
  19         date=`git --git-dir=$GITDIR rev-list -n1 --pretty=format:%cD HEAD | \
  20               sed -ne '/commit/!{s/^.*, *\([ 0-9][0-9]\) \([a-zA-Z]*\) \([0-9]*\) .*$/\3\2\1/;y/ /0/;\
  21                    s/Jan/01/;s/Feb/02/;s/Mar/03/;s/Apr/04/;s/May/05/;s/Jun/06/;
  22                    s/Jul/07/;s/Aug/08/;s/Sep/09/;s/Oct/10/;s/Nov/11/;s/Dec/12/;
  23                    p;}'`
  24     fi
  25     # Get a 7-character hash for the HEAD commit.
  26     shorthash=`git --git-dir=$GITDIR rev-parse --short=7 HEAD 2>/dev/null`
  27     # Get the full hash for the HEAD commit.
  28     fullhash=`git --git-dir=$GITDIR rev-parse HEAD 2>/dev/null`
  29     # Generate a version string like 4.0.99-dev-YYYYMMDD-1234abc-dirty.
  30     # If PKGVERSION ends in a date, replace it with the head commit.
  31     version=`echo $PKGVERSION | sed -e 's/-dev-[0-9]*$/-dev/'`-$date-$shorthash$dirtystr
  32     #version=$PKGVERSION-$date-$shorthash$dirtystr
  33     # Find the name of the remote which has the git.gromacs.org:gromacs in its url.
  34     # If not found, just set baserev to "unknown".
  35     gmxremote=`git --git-dir=$GITDIR config --get-regexp 'remote\..*\.url' 'git\.gromacs\.org[:|/]gromacs' | sed -e 's/remote\.\(.*\)\.url.*/\1/'`
  36     if test "x$gmxremote" = "x" ; then
  37         baserev="unknown"
  38     else
  39         # Find the most recent ancestral commit that appears in $gmxremote.
  40         # Gets the hash and the number of local commits that are newer than
  41         # the found commit.
  42         baserev=`git --git-dir=$GITDIR rev-list HEAD | git --git-dir=$GITDIR name-rev --stdin --refs=refs/remotes/$gmxremote/* | awk 'NF > 1 {print $1 " (" NR-1 " newer local commits)"; exit 0}'`
  43         # Extract the base hash
  44         basehash=`expr "$baserev" : '\([0123456789abcdef]*\) '`
  45         # Do not report the base revision if it is the same as the most recent commit
  46         if test "$basehash" = "$fullhash" ; then
  47             baserev=
  48         fi
  49     fi
  50 else
  51     version=$PKGVERSION
  52     fullhash="unknown"
  53     dirtystr=
  54     baserev=
  55 fi
  56
  57 # Write out to a temporary file, to compare with current version.c.
  58 cat > version.c.tmp << END
  59 #include "version.h"
  60 const char _gmx_ver_string[] = "VERSION $version";
  61 const char _gmx_full_git_hash[] = "$fullhash$dirtystr";
  62 const char _gmx_central_base_hash[] = "$baserev";
  63 END
  64
  65 # Replace version.c with version.c.tmp if they differ.
  66 [ -f version.c ] || touch version.c
  67 cmp -s version.c.tmp version.c || mv -f version.c.tmp version.c
  68 rm -f version.c.tmp
  69