There was an error when using autoreconf -fi, configure.ac:15: error: possibly undefined macro: AC_PROG_SED If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. autoreconf: /usr/bin/autoconf failed with exit status: 1 Removing AC_PROG_SED from line 15 worked. autoreconf (GNU Autoconf) 2.59 was used. AC_PROG_SED checks to make sure you have a Posix-compliant version of Sed. Not sure why that's important.... http://www.gnu.org/software/hello/manual/autoconf/Particular-Programs.html Rajeev