Objective Caml 3.04 was tested on a PowerMac G3 under Mac OS 10.1 with the following software installed. It should work without problem even if you haven't installed these packages, but in that case you will not have the graphics library nor the labltk library. - fink 0.3.1 (package manager) - tcl installed via fink - XFree 4.1 - XDarwin 1.0a3 - OroborOSX 0.75 alpha3 To compile Objective Caml 3.04, follow the instructions in file INSTALL. The following notes refer to the steps described in that file. configure: To get labltk, you need to run ./configure with these options: ./configure -tkdefs -I/sw/include -tklibs -L/sw/lib make world: do not worry about all the error messages in interp.c make bootstrap: no comment make opt: no comment make opt.opt: This step is optional and it does not work (yet) on Mac OS 10. You should just skip it.