$ ./auto_gen.sh --------------- running libtool --------------- --------------- running aclocal --------------- aclocal (GNU automake) 1.10 Written by Tom Tromey and Alexandre Duret-Lutz . Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ------------------ running autoheader ------------------ aclocal.m4:14: error: this file was generated for autoconf 2.60. You have another version of autoconf. If you want to use that, you should regenerate the build system entirely. aclocal.m4:14: the top level autom4te-2.61: /usr/bin/m4 failed with exit status: 63 autoheader-2.61: '/usr/bin/autom4te-2.61' failed with exit status: 63