The search path used when loading libraries is specified by the global flag library_path using the get_flag/2 and set_flag/2 predicates. This flag contains a list of strings containing the pathnames of the directories to be searched when loading a library file. User libraries may be added to the system simply by copying the desired file into the ECLiPSe library directory. Alternatively the library_path flag may be updated to point at a number of user specific directories.
lib(Lib, Mod) is similar to use_module_body(library(Lib), Mod), however with lib/2 it is possible to load files that do not contain any module definitions or those with a different name than the file name. Another difference is that lib/2 uses ensure_loaded/2 to load the file and so it is recompiled if the file has been modified.
Success: [eclipse]: lib(utilities, utils). loading the library /home/lp/icl/prolog/utilities.pl yes. Error: lib(fred,Y). (Error 4) lib(sorts,1). (Error 5) lib(no_lib,lib). (Error 173)