* src/bin/man/Makefile.am (common_dep): Fix dependency.

src/bin/man/Makefile.am

 ## -*- coding: utf-8 -*-
-## Copyright (C) 2012 Laboratoire de Recherche et Développement
+## Copyright (C) 2012, 2013 Laboratoire de Recherche et Développement
 ## de l'Epita (LRDE).
 ##
 ## This file is part of Spot, a model checking library.
@@ -17,7 +17,7 @@
 ## You should have received a copy of the GNU General Public License
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-common_dep = $(top_builddir)/configure.ac
+common_dep = $(top_srcdir)/configure.ac
 x_to_1 = $(top_builddir)/tools/x-to-1
 convman = ARGP_HELP_FMT=header-col=0 $(SHELL) "$(x_to_1)" \
           "$(PERL)" "$(top_srcdir)/tools/help2man -N -L 'en_US.UTF-8'"