#! /bin/sh
# Run ./bootstrap to generate the boilerplate scripts such as ./configure.

if autoreconf --version 2>&1 > /dev/null ;then
  autoreconf -f -v -i
else
  set -x 
  aclocal --force -I m4 \
  && autoconf --force \
  && automake --add-missing --copy --force-missing
fi

# Print a version into .version

# The tags follow SVN tags, which are empty commits that branch off.
# This means git describe only works if on such a commit, otherwise
# we'll use this workaround to populate .version.

# Traverse all tags,
# Find common ancestor of HEAD and tag,
# Count number of commits between this ancestor and HEAD
# Find tag with mininum count
# Produce a <tag>-<count>-g<hash> string a la git describe
if test "x`git describe 2>/dev/null`" = x ;then
  TAGS=`git tag -l 2>/dev/null`
  if test "x$TAGS" != x ;then
    HD=`git describe --always --dirty`
    for TAG in $TAGS ;do
      MB=`git merge-base $TAG HEAD`
      C=`git rev-list ${MB}..HEAD | wc -l`
      # Count cannot be 0, git describe would have worked.
      if test $C -gt 0 ;then
        echo "$C $TAG-$C-g$HD"
      fi
    done | sort -n | head -n1 | cut -d' ' -f2 > .version
    echo .version: `cat .version`
    cp -v .version .tarball-version
  fi
fi