ECL 9.4.0

This release is the first one with a new design of ECL, which includes changes in the way streams are implemented, support for full Unicode character set, safety against interrupts and serious performance improvements.

Known issues:

  • Threads and Unicode currently do not work in the Windows port.

Please read the changelog to get a feeling of the many fixes and improvements.

In particular I want to remark the new module, BYTECMP, which implements bytecodes compilations. By configuring this module as a built-in part of ECL (--with-bytecmp=builtin) you will be able to ship ECL to places that lack a C compiler, while still being able to use COMPILE and COMPILE-FILE.

Further information and links to the download mirrors, at

Posted by Juan Jose Garcia Ripoll 2009-04-04