]> >> Working on Batteries, we're faced with a few places where we'd like to >> perform conditional compilation depending on the version of OCaml being >> used. We could probably do this with Camlp4, cpp, Autoconf hackery, etc. >> -- but first, we need to decide on which of these options we'll adopt. >> > > There is optcomp: > https://forge.ocamlcore.org/projects/optcomp/ > http://darcs.ocamlcore.org/repos/optcomp/optcomp/README > Good morning. I have looked at ocamlopt and it looks very useful. Are there any plans to include macro expansion in ocamlopt? I mean something like merging the functionality of ocamlopt and pa_macro but without the restrictions that pa_macro places on where the macro can be used. Besides conditional compilation - to try different variants of the code or to have debugging messages which can be switched off without any performance penalty - I would also like to use it for short pieces of compile-time generated code (for speed up). Currently, I use a Python-based templating system em.py (http://www.alcyone.com/pyos/empy/) for this purpose. This works but combining the way Python and Ocaml syntax is sometimes not very intuitive. It appears that a modern and universal tool for compile-time code generation is MetaOcaml. However, is there a way in MetaOcaml to generate the code just once and not every time the program is run? I mean, can the code fragments be cached - saved into a file (a shared library?) and later retrieved? Thanks, Jan -- ------------------------------------------------------------------------- Jan Kybic <kybic@fel.cvut.cz> tel. +420 2 2435 5721 http://cmp.felk.cvut.cz/~kybic ICQ 200569450