I'm reporting the warnings as instructed; configure was created using autoconf HEAD from today, running it on IRIX 6.2 with tcsh login shell gives: % ./configure Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. checking for a BSD-compatible install... ./install-sh -c checking build system type... mips-sgi-irix6.2 ... (and it takes several minutes to get that far) The chosen shell was /bin/ksh it seems. joe