+# func_gnulib_dir
+# locates the directory where the gnulib repository lives
+# Input:
+# - progname name of this program
+# Sets variables
+# - self_abspathname absolute pathname of gnulib-tool
+# - gnulib_dir absolute pathname of gnulib repository
+func_gnulib_dir ()
+{
+ case "$progname" in
+ /*) self_abspathname="$progname" ;;
+ */*) self_abspathname=`pwd`/"$progname" ;;
+ *)
+ # Look in $PATH.
+ # Iterate through the elements of $PATH.
+ # We use IFS=: instead of
+ # for d in `echo ":$PATH:" | sed -e 's/:::*/:.:/g' | sed -e 's/:/ /g'`
+ # because the latter does not work when some PATH element contains spaces.
+ # We use a canonicalized $pathx instead of $PATH, because empty PATH
+ # elements are by definition equivalent to '.', however field splitting
+ # according to IFS=: loses empty fields in many shells:
+ # - /bin/sh on OSF/1 and Solaris loses all empty fields (at the
+ # beginning, at the end, and in the middle),
+ # - /bin/sh on IRIX and /bin/ksh on IRIX and OSF/1 lose empty fields
+ # at the beginning and at the end,
+ # - GNU bash, /bin/sh on AIX and HP-UX, and /bin/ksh on AIX, HP-UX,
+ # Solaris lose empty fields at the end.
+ # The 'case' statement is an optimization, to avoid evaluating the
+ # explicit canonicalization command when $PATH contains no empty fields.
+ self_abspathname=
+ if test "${PATH_SEPARATOR+set}" != set; then
+ func_tmpdir
+ { echo "#! /bin/sh"; echo "exit 0"; } > "$tmp"/conf.sh
+ chmod +x "$tmp"/conf.sh
+ if (PATH="/nonexistent;$tmp"; conf.sh) >/dev/null 2>&1; then
+ PATH_SEPARATOR=';'
+ else
+ PATH_SEPARATOR=:
+ fi
+ rm -rf "$tmp"
+ fi
+ if test "$PATH_SEPARATOR" = ";"; then
+ # On Windows, programs are searched in "." before $PATH.
+ pathx=".;$PATH"
+ else
+ # On Unix, we have to convert empty PATH elements to ".".
+ pathx="$PATH"
+ case :$PATH: in
+ *::*)
+ pathx=`echo ":$PATH:" | sed -e 's/:::*/:.:/g' -e 's/^://' -e 's/:\$//'`
+ ;;
+ esac
+ fi
+ save_IFS="$IFS"
+ IFS="$PATH_SEPARATOR"
+ for d in $pathx; do
+ IFS="$save_IFS"
+ test -z "$d" && d=.
+ if test -x "$d/$progname" && test ! -d "$d/$progname"; then
+ self_abspathname="$d/$progname"
+ break
+ fi
+ done
+ IFS="$save_IFS"
+ if test -z "$self_abspathname"; then
+ func_fatal_error "could not locate the gnulib-tool program - how did you invoke it?"
+ fi
+ ;;
+ esac
+ while test -h "$self_abspathname"; do
+ # Resolve symbolic link.
+ linkval=`func_readlink "$self_abspathname"`
+ test -n "$linkval" || break
+ case "$linkval" in
+ /* ) self_abspathname="$linkval" ;;
+ * ) self_abspathname=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
+ esac
+ done
+ gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`
+}
+