========================== C M U C L  20 e =============================

[In Progress]

The CMUCL project is pleased to announce the release of CMUCL 20e.
This is a major release which contains numerous enhancements and
bug fixes from the 20c release.

CMUCL is a free, high performance implementation of the Common Lisp
programming language which runs on most major Unix platforms. It
mainly conforms to the ANSI Common Lisp standard. CMUCL provides a
sophisticated native code compiler; a powerful foreign function
interface; an implementation of CLOS, the Common Lisp Object System,
which includes multi-methods and a meta-object protocol; a source-level
debugger and code profiler; and an Emacs-like editor implemented in
Common Lisp. CMUCL is maintained by a team of volunteers collaborating
over the Internet, and is mostly in the public domain.

New in this release:

  * Known issues:

  * Feature enhancements
 
  * Changes

    * ASDF2 updated to version 2.30.

    * DEFINE-COMPILER-MACRO now has source-location information for
      the macro definition.

    * :ALIEN-CALLBACK added to *FEATURES* for platforms that support
      alien callbacks.
    * The sparc port can be built using gcc once again.
    * The old Cheney stop-and-copy GC supported on sparc once again.
      However, there are no plans on supplying sparc binaries with

      this GC.
    * For x86, optimize TRUNCATE when the second arg is a compile-time

      constant and use a multiplication instead of a division.  (Sparc
      and ppc already had this optimization)

    * The following *FEATURES* have been removed:
      * :COMMON (not used)
      * :CONSERVATIVE-FLOAT-TYPE (Always default to this in type
        derivation.)

      * :I486 and :PENTIUM (Always assume we're running on at least a
        Pentium.)

  * ANSI compliance fixes:

    * Attempts to modify the standard readtable or the standard pprint
      dispatch table will now signal a continuable error.

  * Bugfixes:

    * REPLACE and friends on strings were limited to strings less than

      the maximum possible size. This has been fixed so strings of any
      supported length can be handled.  (See ticket #66 and #68.)

    * A serious error in FILE-POSITION on streams using an encoding
      other than latin1 has been fixed.  See ticket #74.

  * Trac Tickets:

    * Ticket #52 reopened.

    * Ticket #66 fixed.
    * Ticket #67 fixed.
    * Ticket #68 fixed.

    * Ticket #69 fixed.

    * Ticket #70 fixed.
    * Ticket #65 fixed.

    * Ticket #71 fixed.
    * Ticket #72 fixed.

    * Ticket #73 fixed.

    * Ticket #74 fixed.

  * Other changes:

    * -8 option for build-all.sh is deprecated since we don't
      officially support 8-bit builds anymore.

    * Some small updates to the User Manual and CMU Internals
      documents to generate pdf files by default.

  * Improvements to the PCL implementation of CLOS:

  * Changes to building procedure:

    * In make-dist.sh, the version is now optional.  If not given, a
      version is derived from the git hash returned by "git
      describe".