I built autoconf 2.59 from source on Solaris 9. The configure, make, and install appeared to go without error. However, when running autoconf on an existing project, I now get: configure.ac:1: error: possibly undefined macro: dnl If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. configure.ac:64: error: possibly undefined macro: AC_MSG_ERROR ... (more of these for AC_DEFINE, AC_MSG_WARN, AC_CHECK_FUNC, etc.) Is there something obvious wrong here that I can check? Thanks, -Steve -- Steve Huston, Riverace Corporation Co-author of "C++ Network Programming" and "The ACE Programmer's Guide" Books, ACE kit and support info at http://www.riverace.com/