Hi, I'm trying to compile the sources of Opam version 1.0.0 under Cygwin / Windows 7 starter I'm using protz's ocaml version 4.00.1 The compilation ends with: ./ocp-build -help >/dev/null Fatal error: unknown C primitive `unix_waitpid' Makefile:4: recipe for target `ocp-build' failed make[1]: *** [ocp-build] Error 2 -- Cheers