
sa-compile - compile SpamAssassin ruleset into native code

sa-compile [options]
Options:
--list Output base string list to STDOUT
--sudo Use 'sudo' for privilege escalation
--keep-tmps Keep temporary files instead of deleting
-C path, --configpath=path, --config-file=path
Path to standard configuration dir
-p prefs, --prefspath=file, --prefs-file=file
Set user preferences file
--siteconfigpath=path Path for site configs
(default: /etc/mail/spamassassin)
--updatedir=path Directory to place updates
(default: /var/lib/spamassassin/compiled/<perlversion>/<version>)
--cf='config line' Additional line of configuration
-D, --debug [area=n,...] Print debugging messages
-V, --version Print version
-h, --help Print usage message

sa-compile uses re2c to compile the site-wide parts of the SpamAssassin ruleset. No part of user_prefs or any files included from user_prefs can be built into the compiled set.
This compiled set is then used by the Mail::SpamAssassin::Plugin::Rule2XSBody plugin to speed up SpamAssassin's operation, where possible, and when that plugin is loaded.
re2c can match strings much faster than perl code, by constructing a DFA to match many simple strings in parallel, and compiling that to native object code. Not all SpamAssassin rules are amenable to this conversion, however.
This requires re2c (see http://re2c.org/), and the C compiler used to build Perl XS modules, be installed.
Note that running this, and creating a compiled ruleset, will have no effect on SpamAssassin scanning speeds unless you also edit your v320.pre file and ensure this line is uncommented:
loadplugin Mail::SpamAssassin::Plugin::Rule2XSBody

Output the extracted base strings to STDOUT, instead of generating the C extension code.
Use sudo(8) to run code as 'root' when writing files to the compiled-rules storage area (which is @@LOCAL_STATE_DIR@@/compiled/@@PERL_MAJOR_VER@@/@@VERSION@@ by default).
Keep temporary files after the script completes, instead of deleting them.
Use the specified path for locating the distributed configuration files. Ignore the default directories (usually /usr/share/spamassassin or similar).
Use the specified path for locating site-specific configuration files. Ignore the default directories (usually /etc/mail/spamassassin or similar).
By default, sa-compile will use the system-wide rules update directory:
@@LOCAL_STATE_DIR@@/spamassassin/compiled/@@PERL_MAJOR_VER@@/@@VERSION@@
If the updates should be stored in another location, specify it here.
Note that use of this option is not recommended; if sa-compile is placing the compiled rules the wrong directory, you probably need to rebuild SpamAssassin with different Makefile.PL arguments, instead of overriding sa-compile's runtime behaviour.
Add additional lines of configuration directly from the command-line, parsed after the configuration files are read. Multiple --cf arguments can be used, and each will be considered a separate line of configuration.
Read user score preferences from prefs (usually $HOME/.spamassassin/user_prefs) .
Produce debugging output. If no areas are listed, all debugging information is printed. Diagnostic output can also be enabled for each area individually; area is the area of the code to instrument.
For more information about which areas (also known as channels) are available, please see the documentation at http://wiki.apache.org/spamassassin/DebugChannels.
Print help message and exit.
Print sa-compile version and exit.

Mail::SpamAssassin(3) spamassassin(1) spamd(1)

Mail::SpamAssassin re2c Mail::SpamAssassin::Plugin::Rule2XSBody

See <http://issues.apache.org/SpamAssassin/>

The Apache SpamAssassin(tm) Project <http://spamassassin.apache.org/>

SpamAssassin is distributed under the Apache License, Version 2.0, as described in the file LICENSE included with the distribution.