1 ========================== C M U C L 20 d =============================
5 The CMUCL project is pleased to announce the release of CMUCL 20d.
6 This is a major release which contains numerous enhancements and
7 bug fixes from the 20c release.
9 CMUCL is a free, high performance implementation of the Common Lisp
10 programming language which runs on most major Unix platforms. It
11 mainly conforms to the ANSI Common Lisp standard. CMUCL provides a
12 sophisticated native code compiler; a powerful foreign function
13 interface; an implementation of CLOS, the Common Lisp Object System,
14 which includes multi-methods and a meta-object protocol; a source-level
15 debugger and code profiler; and an Emacs-like editor implemented in
16 Common Lisp. CMUCL is maintained by a team of volunteers collaborating
17 over the Internet, and is mostly in the public domain.
23 * Feature enhancements
24 * Added a new contrib, "contrib-packed-sse2" to allow packed
25 operations ala SSE2. Support for some packed sse2 operations
26 like multiply, divide, and shuffle for both packed singles and
27 doubles. All operations are done on top of (complex
28 double-float) numbers. Utility functions are provided to set
29 and access these packed numbers.
30 * Added external format for EUC-KR.
33 * ASDF2 updated to version 2.24.
34 * Behavior of STRING-TO-OCTETS has changed. This is an
35 incompatible change from the previous version but should be more
36 useful when a buffer is given which is not large enough to hold
37 all the octets for the given string. See docstring for more
39 * The PowerPC port of CMUCL on Darwin (Mac OS X) has been revived
40 and is up-to-date. It will run on OSX 10.4 and 10.5. However,
41 only the Unicode build is supported.
42 * Updated to Unicode 6.1.0.
43 * Many additional aliases for external formats added that match
44 the glibc iconv aliases.
45 * Implement faster LOGCOUNT function on x86, if :SSE3 feature is
46 available. (Only applies to new uses of LOGCOUNT. The core
47 uses the default version.)
48 * On x86, SET-FLOATING-POINT-MODES clears any current and accrued
49 exceptions that match exceptions in :TRAPS. Previously,
50 enabling a trap when the current exception also listed that trap
51 caused the exception to be immediately signaled. This no longer
52 happens and now matches how ppc and sparc behave.
53 * OSX Lion and XCode 4 can now compile cmucl without problems.
54 * OSX 10.4 is no longer supported.
55 * Micro optimizations for floats: 2*x -> x+x and x/2^n ->
57 * Add VM::WITH-CYCLE-COUNTER to return the number of cycles elapsed
58 when executing the body, as measured by the CPU cycle/tick counter.
60 * ANSI compliance fixes:
61 * CMUCL was not printing pathnames like (make-pathname :directory
62 '(:absolute "tmp" "" "/")) correctly. This is now printed using
66 * DECODE-FLOAT was not correctly declared and could not be
67 compiled to handle double-double-floats.
68 * The source distribution now includes the scripts from the bin
69 directory, which was previously missing.
70 * The stack needs to be 16-byte aligned on Darwin.
71 * LDB no longer prints prompts forever when EOF is reached.
72 * LISP:UNICODE-COMPLETE now longer signals an error if the prefix
73 isn't a prefix of the name of any Unicode character. Nil is
75 * Some VOP costs were incorrect which prevented the fast complex
76 double-float multiplier from being used when sse3 is available.
77 * External format for UTF-32 was generating an error when
78 converting octets to a string.
79 * The UTF-16-BE and UTF-16-LE external formats were returning the
80 incorrect number of octets when surrogates pairs were decoded.
81 This confuses the stream buffering code.
82 * Fix typo in ISO8859-2 external format that caused it not to work
83 correctly. This type potentially also caused failures for all other
84 external formats that were based on ISO8859-2.
85 * COMPILE-FILE should not signal an error when given a list for
86 :EXTERNAL-FORMAT. Lists are needed to specify a composing
87 external format like :DOS or :MAC.
88 * EXPORT and friends should not EVAL the form when compiling.
89 This was probably a leftover from the time when CMUCL did not
90 have DEFPACKAGE. (See ticket:60.)
91 * The debugger was not always opening the file in the correct
92 external format. It defaulted to using
93 *DEFAULT-EXTERNAL-FORMAT* instead of the format used when
95 * Minor build issue in CLM debugger interface due to USE-PACKAGE
96 no longer having special compiler treatment.
97 * READ-CYCLE-COUNTER no longer destroys any live values in the EBX
101 * #50: Print/read error with make-pathname.
102 * #53: UTF-8 in core.
103 * #52: UNICODE-COMPLETE-NAME misses a completion.
104 * #55: blocked signals.
105 * #58: UTF-16 buffering problem.
106 * #60: compile-file and export problem
107 * #61: Darwin+clang doesn't produce a working lisp
110 * The layout of the cmucl directories has been changed.
111 * Add -R option to build.sh to force recompiling the C
112 runtime. (Default it to compile only what is changed.)
113 * Add -R option to build-all.sh to force recompiling the C
116 * Improvements to the PCL implementation of CLOS:
118 * Changes to building procedure:
120 This release is not binary compatible with code compiled using CMUCL
121 20c; you will need to recompile FASL files.
123 See <URL:http://www.cmucl.org> or
124 <URL:http://trac.common-lisp.net/cmucl> for download information,
125 guidelines on reporting bugs, and mailing list details.
128 We hope you enjoy using this release of CMUCL!