src/gmxlib/genversion.sh

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