Sigh... I just tried to rebuild with debug (--error-checking=all --debug=yes --cflags=-g) and the link now fails because several symbols can't be resolved. cc -g -L/usr/ccs/lib -L/usr/dt/lib -o temacs abbrev.o alloc.o blocktype.o buffer.o bytecode.o callint.o callproc.o casefiddle.o casetab.o chartab.o cmdloop.o cmds.o console.o console-stream.o data.o device.o dired.o doc.o doprnt.o dynarr.o editfns.o elhash.o emacs.o eval.o events.o debug.o unexalpha.o tooltalk.o dragdrop.o menubar.o scrollbar.o dialog.o toolbar.o gui.o menubar-x.o scrollbar-x.o dialog-x.o toolbar-x.o gui-x.o realpath.o console-tty.o device-tty.o event-tty.o frame-tty.o objects-tty.o redisplay-tty.o cm.o terminfo.o event-unixoid.o database.o sysdll.o dll.o process-unix.o event-stream.o extents.o faces.o fileio.o filemode.o floatfns.o fns.o font-lock.o frame.o general.o getloadavg.o glyphs.o glyphs-eimage.o hash.o imgproc.o indent.o insdel.o intl.o keymap.o line-number.o lread.o lstream.o macros.o marker.o md5.o minibuf.o objects.o opaque.o print.o process.o profile.o pure.o rangetab.o redisplay.o redisplay-output.o regex.o search.o signal.o sound.o spec! ifier.o strftime.o symbols.o syntax.o sysdep.o undo.o balloon_help.o balloon-x.o console-x.o device-x.o event-Xt.o frame-x.o glyphs-x.o objects-x.o redisplay-x.o xgccache.o xselect.o widget.o window.o lastfile.o ralloc.o EmacsFrame.o EmacsShell.o TopLevelEmacsShell.o TransientEmacsShell.o EmacsManager.o offix.o ../lwlib/liblw.a -ldnet_stub -lXm -ltiff -lpng -ljpeg -lz -lXpm -lDtSvc -ltt -lXmu -lXt -lXext -lX11 -lSM -lICE -ldb -lcurses -lm -lbsd ld: Unresolved: error_check_frame error_check_string error_check_device error_check_window error_check_console XINT error_check_symbol error_check_cons make_int error_check_event error_check_vector error_check_glyph error_check_buffer error_check_image_instance make[1]: *** [temacs] Error 1 Is there some special incantation needed to build with debug and error checking? Thanks, R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman(a)es.net Phone: +1 510 486-8634