+# If $STR is not already on a line by itself in $FILE, insert it,
+# sorting the new contents of the file and replacing $FILE with the result.
+insert_sorted_if_absent() {
+ file=$1
+ str=$2
+ test -f $file || touch $file
+ echo "$str" | sort -u - $file | cmp -s - $file \
+ || echo "$str" | sort -u - $file -o $file \
+ || exit 1
+}
+
+# Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
+found_aux_dir=no
+grep '^[ ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
+ >/dev/null && found_aux_dir=yes
+grep '^[ ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
+ >/dev/null && found_aux_dir=yes
+if test $found_aux_dir = no; then
+ echo "$0: expected line not found in configure.ac. Add the following:" >&2
+ echo " AC_CONFIG_AUX_DIR([$build_aux])" >&2
+ exit 1
+fi
+
+# If $build_aux doesn't exist, create it now, otherwise some bits
+# below will malfunction. If creating it, also mark it as ignored.
+if test ! -d $build_aux; then
+ mkdir $build_aux
+ for dot_ig in x $vc_ignore; do
+ test $dot_ig = x && continue
+ insert_sorted_if_absent $dot_ig $build_aux
+ done
+fi
+
+echo "$0: Bootstrapping from checked-out $package sources..."
+
+# See if we can use gnulib's git-merge-changelog merge driver.
+if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
+ if git config merge.merge-changelog.driver >/dev/null ; then
+ :
+ elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
+ echo "initializing git-merge-changelog driver"
+ git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
+ git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
+ else
+ echo "consider installing git-merge-changelog from gnulib"
+ fi
+fi
+
+cleanup() {
+ status=$?
+ rm -fr $1
+ exit $status
+}
+
+git_modules_config () {
+ GIT_CONFIG_LOCAL=.gitmodules git config "$@"
+}
+
+# Get paxutils files.
+case ${PAXUTILS_SRCDIR--} in
+-) if [ ! -d paxutils ]; then
+ echo "$0: getting paxutils files..."
+
+ trap "cleanup paxutils" 1 2 13 15
+
+ git clone --depth 1 git://git.sv.gnu.org/paxutils || cleanup paxutils
+
+ trap - 1 2 13 15
+ fi
+ PAXUTILS_SRCDIR=paxutils
+ ;;
+esac
+
+if [ -r $PAXUTILS_SRCDIR/gnulib.modules ]; then
+ gnulib_modules=`
+ (echo "$gnulib_modules"; grep '^[^#]' $PAXUTILS_SRCDIR/gnulib.modules) |
+ sort -u
+ `
+fi
+
+# Get gnulib files.
+
+case ${GNULIB_SRCDIR--} in
+-)
+ if git_modules_config submodule.gnulib.url >/dev/null; then
+ echo "$0: getting gnulib files..."
+ git submodule init || exit $?
+ git submodule update || exit $?
+
+ elif [ ! -d gnulib ]; then
+ echo "$0: getting gnulib files..."
+
+ trap cleanup_gnulib 1 2 13 15
+
+ git clone --help|grep depth > /dev/null && shallow='--depth 2' || shallow=
+ git clone $shallow git://git.sv.gnu.org/gnulib ||
+ "cleanup $1"
+
+ trap - 1 2 13 15
+ fi
+ GNULIB_SRCDIR=gnulib
+ ;;
+*)
+ # Redirect the gnulib submodule to the directory on the command line
+ # if possible.
+ if test -d "$GNULIB_SRCDIR"/.git && \
+ git_modules_config submodule.gnulib.url >/dev/null; then
+ git submodule init
+ GNULIB_SRCDIR=`cd $GNULIB_SRCDIR && pwd`
+ git config --replace-all submodule.gnulib.url $GNULIB_SRCDIR
+ echo "$0: getting gnulib files..."
+ git submodule update || exit $?
+ GNULIB_SRCDIR=gnulib
+ fi
+ ;;
+esac
+
+gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
+<$gnulib_tool || exit