Hi, I have tried to compile Gambit under QNX 4.25 (not QNX 6) and get error during configure stage checking for sys/types.h... /tmp/sh23124234: cannot open file (No such file or directory). It seems that configure script doesn't run properly in QNX 4.25 which is very limited realtime POSIX system. I have a general question is it possible to build Gambit in system: 1. that doesn't support automake/autoconf properly 2. that does not have so/dll 3. that doesn't have threads (pthread for instance) Is it possible to write manually config.h is such a way? In general I want to develop under Linux but run/test everything under QNX 4.25. QNX 4.25 supprorts tcp/ip sockets so this is the only requirement for me except standart c functions. Oleg.