I followed Michael Collin's instruction in an earlier email about building pre8. During the ./bootstrap.h, I encountered the following error: Entering directory /usr/src/freeswitch.trunk/libs/libsndfile Creating aclocal.m4 Running libtoolize... Putting files in AC_CONFIG_AUX_DIR, `Cfg'. Creating configure configure.ac:278: error: possibly undefined macro: AC_OCTAVE_BUILD If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. configure.ac:478: error: possibly undefined macro: AC_GCC_VERSION Do I need to worry about this? Also, in general, do the XML files in config get updated during the 'make install', or are they left as they were from the previous builds? Thanks, Lars