Clozure CL

{{Infobox Software

| name = Clozure CL

| logo =

| screenshot =

| author =

| developer = Clozure Associates

| released =

| latest release version = 1.13[https://github.com/Clozure/ccl/releases/tag/v1.13 Release Clozure CL 1.13]

| latest release date = {{Start date and age|2024|08|14}}

| latest preview version =

| latest preview date =

| operating system = Linux, Solaris, FreeBSD, Mac OS X, Microsoft Windows

| platform = Cross-platform

| language = Common Lisp

| genre = IDE, Compiler and runtime

| license = Apache 2[https://lists.clozure.com/pipermail/openmcl-devel/2016-January/011174.html Clozure CL now Apache 2 licensed] since Jan 2016, earlier version is licensed under LGPL 2.1.

| website = {{URL|ccl.clozure.com}}

}}

Clozure CL (CCL) is a Common Lisp implementation. It implements the full ANSI Common Lisp standard with several extensions (CLOS MOP, threads, CLOS conditions, CLOS streams, ...). It contains a command line development environment, an experimental integrated development environment (IDE) for Mac OS X using the Hemlock editor, and can also be used with SLIME (a Common Lisp development environment for GNU Emacs). Clozure CL is open source and the project is hosted by Clozure Associates.

Supported platforms

Clozure CL supports the Mac OS X, Linux, FreeBSD, Solaris and Microsoft Windows platforms. There are 32 and 64 bit x86 variants for each. Additionally, there are PowerPC ports for Mac OS X and Linux, and a 32-bit ARM port for Linux.

Applications

Clozure CL was used by ITA Software for the business logic of a new Airline Reservation System.{{usurped|1=[https://archive.today/20120707201647/http://danweinreb.org/blog/come-to-the-european-common-lisp-meeting ECLM 2009 talk by Dan Weinreb]}}

Clozure CL is also commonly used as an underlying Common Lisp implementation for the ACL2 theorem prover.{{cite web|title=ACL2 installation requirements|url=http://www.cs.utexas.edu/users/moore/acl2/v7-2/HTML/installation/requirements.html#Obtaining-CCL}}

History

Formerly known as OpenMCL, Clozure CL is an evolution of Macintosh Common Lisp.

Technology

CCL contains a precise, generational, compacting garbage collector. CCL's compiler produces native instructions for Lisp expressions and files. By default every expression entered at the REPL is compiled to native code.

Lisp threads are implemented as preemptively-scheduled, native operating-system threads.

CCL implements built-in facilities to easily interface with C and Objective-C libraries (Cocoa bridge) and these are used to implement the IDE amongst other things.

The IDE (based upon the Hemlock editor) is currently labelled as experimental. An effort{{better source needed|date=October 2018}}[http://ccl.clozure.com/blog/?p=28 Community pledge drive] for IDE improvements is underway to improve this.

References

External links

[http://ccl.clozure.com Clozure CL]
[https://web.archive.org/web/20140920214400/http://clozure.com/clozure-cl.html Clozure CL on Clozure Associates site]
[https://github.com/Clozure/ccl Github Repository and Issue Tracker]
[http://trac.clozure.com/ccl Trac for Clozure CL]
[https://lists.clozure.com/pipermail/openmcl-devel/ OpenMCL-Devel mailing list]
[https://web.archive.org/web/20160307091459/https://itunes.apple.com/en/app/clozure-cl/id489900618 Clozure CL in Apple's Mac App Store]

Category:Common Lisp (programming language) software

Category:Common Lisp implementations

Category:Cross-platform free software

Category:Free and open source compilers

Category:Software using the Apache license

Category:Software using the GNU Lesser General Public License