Hallo Judah, I've build http://www.thrysoee.dk/editline/libedit-20080712-2.11.tar.gz and it was linked against libcurses: -bash-3.1$ ldd /usr/local/lib/libedit.so.0 libcurses.so.1 => /lib/libcurses.so.1 libc.so.1 => /lib/libc.so.1 libgcc_s.so.1 => /usr/local/lang/lib/gcc/i386-pc-solaris2.10/4.2.2/libgcc_s.so.1 libm.so.2 => /lib/libm.so.2 When building ghc-6.10.1 your configure script prefers ncurses over curses, therefore I get an additional dependency for ghc: libncurses.so.5 => /usr/local/lib/libncurses.so.5 For (the usual) dynamic linking just "-ledit" is enough, only for static linking "-lcurses" or "-lncurses" is needed, otherwise "term.o" is the "Undefined symbol". (By chance, I've only libncurses.a and no libcurses.a for static linking.) I'm not sure which dependency to prefer. configure of libedit-20080712-2.1 prefers curses over ncurses. Cheers Christian P.S. While relinking the stage2 compiler I'll noticed that also haddock depends on libedit which I think should be avoided (by splitting the ghc package)! Which other ghc-6.10.1 binaries depend on libedit? P.P.S My PC binary distribution is here: http://www.dfki.de/sks/hets/pc-solaris/ghcs/ghc-6.10.1-i386-unknown-solaris2... I did not succeed to build ghc-6.10.1 for a Sparc http://hackage.haskell.org/trac/ghc/ticket/2692