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Customizing library paths and path aliases

Author(s): Daniel Cabeza.

Version: 1.11#222 (2004/5/24, 13:8:7 CEST)

Version of last change: 1.11#66 (2003/12/19, 16:9:45 CET)

This library provides means for customizing, from environment variables, the libraries and path aliases known by an executable. Many applications of Ciao, including ciaoc, ciaosh, and ciao-shell make use of this library. Note that if an executable is created dynamic, it will try to load its components at startup, before the procedures of this module can be invoked, so in this case all the components should be in standard locations.

Usage and interface (`libpaths`)

Library usage: :- use_module(library(libpaths)).
Exports:
- Predicates: get_alias_path/0.
- Multifiles: file_search_path/2, library_directory/1.
Other modules used:
- System library modules: system, lists.

Documentation on exports (`libpaths`)

PREDICATE: get_alias_path/0:

get_alias_path(get_alias_path

Consult the environment variable 'CIAOALIASPATH' and add facts to predicates library_directory/1 and file_search_path/2 to define new library paths and path aliases. The format of 'CIAOALIASPATH' is a sequence of paths or alias assignments separated by colons, an alias assignment is the name of the alias, an '=' and the path represented by that alias (no blanks allowed). For example, given

   CIAOALIASPATH=/home/bardo/ciao:contrib=/usr/local/lib/ciao

the predicate will define /home/bardo/ciao as a library path and /usr/local/lib/ciao as the path represented by 'contrib'.

Documentation on multifiles (`libpaths`)

PREDICATE: file_search_path/2:

See section Basic file/stream handling.

The predicate is multifile.

The predicate is of type dynamic.

PREDICATE: library_directory/1: