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Steel Bank Common Lisp is an open source / free software *(Common Lisp implementation). It provides an integrated native compiler, interpreter, and debugger. SBCL is a fork off of the main branch of *(CMUCL). SBCL is distinguished from CMUCL by a greater emphasis on maintainability. In particular, the SBCL system can be built directly from its source code, so that the output corresponds to the source code in a controlled, verifiable way, and arbitrary changes can be made to the system without causing bootstrapping problems. SBCL also places less emphasis than CMU CL does on new non-_(ANSI) extensions, or on backward compatibility with old non-ANSI features. More information at the project page at <a href="http://sbcl.sourceforge.net/">http://sbcl.sourceforge.net/</a>, and on the _(SBCL Internals) CLiki _(Common-Lisp-Controller)-compatible SBCL Debian (.deb) packages are part of Debian GNU/Linux 3.0/Woody and Debian GNU/Linux 3.1/Sarge for Alpha, x86, PPC, and SPARC. Later releases will include more architectures. <h3>Local pages</h3> /("SBCL" :match :exact :attribute :topic) <h3>Building 0.8.4 on Sparc</h3> The Sun's assembler doesn't like the GNU syntax used in the SBCL assembler sources, so something like the following is required: <pre>$ ln -s `which gcc` ~/bin/gcc $ ln -s `which gas` ~/bin/as $ export COMPILER_PATH=~/bin</pre> Also, when building from CMUCL you need to add the following stanza to src/cold/ansify.lisp: <pre>#+(and cmu sparc) (ext:set-floating-point-modes :traps '(:overflow :invalid :divide-by-zero))</pre> <h3>SBCL Advocacy Haiku</h3> <pre>(unless (equalp (lisp-implementation-type) "SBCL") (quit))</pre> <pre>#-sbcl(quit)</pre> <h3>Scripts</h3> As of SBCL 1.0.22, shebang-scripts are supported via the --script option (add #!/usr/bin/sbcl --script as the first line). However, --script option changes the way initialization is performed (no sysinit (/etc/sbclrc) and no userinit (~/.sbclrc)). Older versions of SBCL don't tolerate shebang lines (CLISP does). To create an SBCL script, <a href="http://www.sbcl.org/manual/Shebang-Scripts.html">manual/Shebang-Scripts.html</a> suggests using an external trampoline or init hair. That's silly. An executable file without a shebang line defaults to sh. So an SBCL script is simply <pre>$ cat foo #| exec sbcl --noinform --load $0 --end-toplevel-options "$@" |# (format t "hi~%") (quit) $ chmod a+x foo $ ./foo hi $ </pre> To compile, simply <pre>#| fasl=`dirname $0`/`basename $0 .lisp`.fasl [ $fasl -ot $0 ] && sbcl --noinform --eval "(compile-file \"$0\")" --eval "(quit)" > /dev/null exec sbcl --noinform --load $fasl --end-toplevel-options "$@" |#</pre> <h3>Installing SBCL from source not in /usr/local</h3> Unpack the source tarball. Set INSTALL_ROOT to where you want it to go. <pre> export INSTALL_ROOT=$HOME </pre> Now use this hack so it will look for the core file in the right place <pre> export CC="cc '-DSBCL_HOME=\"$INSTALL_ROOT/lib/sbcl/\"'" sh make.sh sh install.sh </pre> <h3>Using Common Lisp Controller with a self installed SBCL</h3> Put this in your .sbclrc <pre> (require 'sb-bsd-sockets) ; needed now because it does not gel well with the path munging by the common-lisp-controller (load "/usr/share/common-lisp/source/common-lisp-controller/common-lisp-controller.lisp") (common-lisp-controller:init-common-lisp-controller-v4 "sbcl") </pre>
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