Hello David, there isn't such guide. I'm refactoring some low-level blocks in ECL in a branch nucleus and already merged a few things from there, but it requires more work before it will make porting easier. As things stand currently, the main hurdle when you port ECL to a new platform is porting Boehm GC (libgc) if that platform is not yet supported. Then you may encounter some nuisances with GMP, although it has an option to use portable C and that in my experience works fairly well even for platforms that were not tested by GMP devs. Given that both bdwgc and gmp compile fine for your embedded platform, then you should add a stub for your platform in aclocal.m4. There you can tweak build flags for it. After tweaking it run autoreconf -ivf to regenerate configure file. ECL also relies on libc. Recently Marius Gerbershagen landed support for cross compiling ECL from different architectures, so that should prove useful. That said I'd first try to cross-compile ecl_min as it is low-level runtime for ECL -- if it builds then the rest should go rather smoothly. Missing features in the embedded's platform libc should be detected by the configure script. Generally I'd go over issues mentioned by the C compiler and fix them one by one as they come up. I hope that it helps, Daniel -- Daniel Kochmański ;; aka jackdaniel | Przemyśl, Poland TurtleWare - Daniel Kochmański      | www.turtleware.eu "Be the change that you wish to see in the world." - Mahatma Gandhi On Wednesday, September 17th, 2025 at 9:46 PM, dave@synergy.org <dave@synergy.org> wrote:

Hello, Is there a document that discusses how to port ECL to a new platform? I am targeting a non-POSIX ANSI C embedded platform. I am looking for guidance on how to approach the work. Thanks, David