Bad luck. I installed gc, but when I try compiling with ./configure --prefix=c:/lisp/app/ecl --enable-threads --enable-unicode --with-system-gmp=yes --with-gmp-prefix=c:/msys/1.0/local --enable-boehm=system configure fails to find gc. Is there a way to specify gc prefix in the same way as for gmp? Regards, Marko