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This is a SWI-Prolog pack specific README file. The actual Logtalk
README file can be found at
some notes on this pack version of Logtalk.
The pack version of Logtalk is mainly targeted for specific application deployment scenarios. For development, using one of the installers available from the Logtalk website is strongly advised for a much better user experience.
Installing this pack simplifies loading Logtalk on-demand by simply using the directive (or the corresponding query):
Note, however, that Logtalk is not packaged as a module and that the
logtalk module provided contains just an initialization directive
that loads Logtalk in exactly the same way as when Logtalk is installed
using one of its prebuilt installers.
When using the directive above, the
shell environment variables are set, just for the duration of the
SWI-Prolog process, to the full path of the
For easy access to the contents of the Logtalk installation folder
(e.g. documentation or examples) you can create a symbolic link to the
../logtalk-3.57.0 directory (in e.g. your home directory). Its full
path can be easily found by using the query:
../logtalk-3.57.0 directory contains a
settings.lgt file that
makes loading of Logtalk silent. If you make other changes to this file,
or to other contents of the
../logtalk-3.57.0 directory, be sure to
make a backup before upgrading or removing this pack.
../logtalk-3.57.0 directory contains several handy scripts but due
to a limitation of the
archive library in SWI-Prolog 7.3.28 and older
versions used for extracting the pack files, the executable permission
of the script files was not preserved. If you're not running SWI-Prolog
7.3.29 or a later version, this issue can be manually fixed after installing
the pack using the following steps (adjust the
full path if necessary for your installation):
$ cd $HOME/lib/swipl/pack/logtalk/logtalk-3.57.0 $ chmod a+x scripts/cleandist.sh $ ./scripts/cleandist.sh