36
37:- module(check_installation,
38 [ check_installation/0,
39 check_installation/1, 40 check_config_files/0,
41 update_config_files/0,
42 test_installation/0,
43 test_installation/1 44 ]). 45:- autoload(library(apply), [maplist/2, maplist/3]). 46:- autoload(library(archive), [archive_open/3, archive_close/1]). 47:- autoload(library(lists), [append/3, member/2]). 48:- autoload(library(occurs), [sub_term/2]). 49:- autoload(library(option), [option/2, merge_options/3]). 50:- autoload(library(prolog_source), [path_segments_atom/2]). 51:- use_module(library(settings), [setting/2]). 52:- autoload(library(dcg/high_order), [sequence//2, sequence/4]). 53:- autoload(library(error), [must_be/2]). 54
55
62
85
87component(tcmalloc,
88 _{ optional:true,
89 test:test_tcmalloc,
90 url:'tcmalloc.html',
91 os:linux
92 }).
93component(gmp,
94 _{ test:current_prolog_flag(bounded, false),
95 url:'gmp.html'
96 }).
98component(library(archive), _{features:archive_features}).
99component(library(cgi), _{}).
100component(library(crypt), _{}).
101component(library(bdb), _{}).
102component(library(double_metaphone), _{}).
103component(library(editline), _{os:unix}).
104component(library(filesex), _{}).
105component(library(http/http_stream), _{}).
106component(library(http/json), _{}).
107component(library(http/jquery), _{features:jquery_file}).
108component(library(isub), _{}).
109component(library(janus), _{features:python_version}).
110component(library(jpl), _{}).
111component(library(memfile), _{}).
112component(library(odbc), _{}).
113component(library(pce),
114 _{pre:use_foreign_library(pce_principal:foreign(pl2xpce)),
115 url:'xpce.html'}).
116component(library(pcre), _{features:pcre_features}).
117component(library(pdt_console), _{}).
118component(library(porter_stem), _{}).
119component(library(process), _{}).
120component(library(protobufs), _{}).
121component(library(readline), _{os:unix}).
122component(library(readutil), _{}).
123component(library(rlimit), _{os:unix}).
124component(library(semweb/rdf_db), _{}).
125component(library(semweb/rdf_ntriples), _{}).
126component(library(semweb/turtle), _{}).
127component(library(sgml), _{}).
128component(library(sha), _{}).
129component(library(snowball), _{}).
130component(library(socket), _{}).
131component(library(ssl), _{}).
132component(library(sweep_link), _{features:sweep_emacs_module}).
133component(library(crypto), _{}).
134component(library(syslog), _{os:unix}).
135component(library(table), _{}).
136component(library(time), _{}).
137component(library(tipc/tipc), _{os:linux}).
138component(library(unicode), _{}).
139component(library(uri), _{}).
140component(library(uuid), _{}).
141component(library(yaml), _{}).
142component(library(zlib), _{}).
143
144issue_base('http://www.swi-prolog.org/build/issues/').
145
146:- thread_local
147 issue/1. 148
149:- meta_predicate
150 run_silent(0, +). 151
166
167check_installation :-
168 print_message(informational, installation(checking)),
169 check_installation_(InstallIssues),
170 check_on_path,
171 check_config_files(ConfigIssues),
172 check_autoload,
173 maplist(print_message(warning), ConfigIssues),
174 append(InstallIssues, ConfigIssues, Issues),
175 ( Issues == []
176 -> print_message(informational, installation(perfect))
177 ; length(Issues, Count),
178 print_message(warning, installation(imperfect(Count)))
179 ).
180
188
189check_installation(Issues) :-
190 check_installation_(Issues0),
191 maplist(public_issue, Issues0, Issues).
192
193public_issue(installation(Term), Source-Issue) :-
194 functor(Term, Issue, _),
195 arg(1, Term, Properties),
196 Source = Properties.source.
197
198check_installation_(Issues) :-
199 retractall(issue(_)),
200 forall(component(Source, _Properties),
201 check_component(Source)),
202 findall(I, retract(issue(I)), Issues).
203
204check_component(Source) :-
205 component(Source, Properties),
206 !,
207 check_component(Source, Properties.put(source,Source)).
208
209check_component(_Source, Properties) :-
210 OS = Properties.get(os),
211 \+ current_os(OS),
212 !.
213check_component(Source, Properties) :-
214 compound(Source),
215 !,
216 check_source(Source, Properties).
217check_component(Feature, Properties) :-
218 print_message(informational, installation(checking(Feature))),
219 ( call(Properties.test)
220 -> print_message(informational, installation(ok))
221 ; print_issue(installation(missing(Properties)))
222 ).
223
224check_source(Source, Properties) :-
225 exists_source(Source),
226 !,
227 print_message(informational, installation(loading(Source))),
228 ( run_silent(( ( Pre = Properties.get(pre)
229 -> call(Pre)
230 ; true
231 ),
232 load_files(Source, [silent(true), if(true)])
233 ),
234 Properties.put(action, load))
235 -> test_component(Properties),
236 print_message(informational, installation(ok)),
237 check_features(Properties)
238 ; true
239 ).
240check_source(_Source, Properties) :-
241 Properties.get(optional) == true,
242 !,
243 print_message(silent,
244 installation(optional_not_found(Properties))).
245check_source(_Source, Properties) :-
246 print_issue(installation(not_found(Properties))).
247
248current_os(unix) :- current_prolog_flag(unix, true).
249current_os(windows) :- current_prolog_flag(windows, true).
250current_os(linux) :- current_prolog_flag(arch, Arch),
251 sub_atom(Arch, _, _, _, linux).
252
256
257test_component(Dict) :-
258 Test = Dict.get(test),
259 !,
260 call(Test).
261test_component(_).
262
269
270check_features(Dict) :-
271 Test = Dict.get(features),
272 !,
273 catch(Test, Error,
274 ( print_message(warning, Error),
275 fail)).
276check_features(_).
277
278
283
284run_silent(Goal, Properties) :-
285 run_collect_messages(Goal, Result, Messages),
286 ( Result == true,
287 Messages == []
288 -> true
289 ; print_issue(installation(failed(Properties, Result, Messages))),
290 fail
291 ).
292
302
303:- thread_local
304 got_message/1. 305
306run_collect_messages(Goal, Result, Messages) :-
307 setup_call_cleanup(
308 asserta((user:thread_message_hook(Term,Kind,Lines) :-
309 error_kind(Kind),
310 assertz(got_message(message(Term,Kind,Lines)))), Ref),
311 ( catch(Goal, E, true)
312 -> ( var(E)
313 -> Result0 = true
314 ; Result0 = exception(E)
315 )
316 ; Result0 = false
317 ),
318 erase(Ref)),
319 findall(Msg, retract(got_message(Msg)), Messages),
320 Result = Result0.
321
322error_kind(warning).
323error_kind(error).
324
325
326 329
331
332:- if(current_predicate(malloc_property/1)). 333test_tcmalloc :-
334 malloc_property('generic.current_allocated_bytes'(Bytes)),
335 Bytes > 1 000 000.
336:- else. 337test_tcmalloc :-
338 fail.
339:- endif. 340
344
345archive_features :-
346 tmp_file_stream(utf8, Name, Out),
347 close(Out),
348 findall(F, archive_filter(F, Name), Filters),
349 print_message(informational, installation(archive(filters, Filters))),
350 findall(F, archive_format(F, Name), Formats),
351 print_message(informational, installation(archive(formats, Formats))),
352 delete_file(Name).
353
354archive_filter(F, Name) :-
355 a_filter(F),
356 catch(archive_open(Name, A, [filter(F)]), E, true),
357 ( var(E)
358 -> archive_close(A)
359 ; true
360 ),
361 \+ subsumes_term(error(domain_error(filter, _),_), E).
362
363archive_format(F, Name) :-
364 a_format(F),
365 catch(archive_open(Name, A, [format(F)]), E, true),
366 ( var(E)
367 -> archive_close(A)
368 ; true
369 ),
370 \+ subsumes_term(error(domain_error(format, _),_), E).
371
372a_filter(bzip2).
373a_filter(compress).
374a_filter(gzip).
375a_filter(grzip).
376a_filter(lrzip).
377a_filter(lzip).
378a_filter(lzma).
379a_filter(lzop).
380a_filter(none).
381a_filter(rpm).
382a_filter(uu).
383a_filter(xz).
384
385a_format('7zip').
386a_format(ar).
387a_format(cab).
388a_format(cpio).
389a_format(empty).
390a_format(gnutar).
391a_format(iso9660).
392a_format(lha).
393a_format(mtree).
394a_format(rar).
395a_format(raw).
396a_format(tar).
397a_format(xar).
398a_format(zip).
399
401
402pcre_features :-
403 findall(X, pcre_missing(X), Missing),
404 ( Missing == []
405 -> true
406 ; print_message(warning, installation(pcre_missing(Missing)))
407 ),
408 ( re_config(compiled_widths(Widths)),
409 1 =:= Widths /\ 1
410 -> true
411 ; print_message(warning, installation(pcre_missing('8-bit support')))
412 ).
413
414pcre_missing(X) :-
415 pcre_must_have(X),
416 Term =.. [X,true],
417 \+ catch(re_config(Term), _, fail).
418
419pcre_must_have(unicode).
420
424
425jquery_file :-
426 setting(jquery:version, File),
427 ( absolute_file_name(js(File), Path, [access(read), file_errors(fail)])
428 -> print_message(informational, installation(jquery(found(Path))))
429 ; print_message(warning, installation(jquery(not_found(File))))
430 ).
431
432sweep_emacs_module :-
433 with_output_to(string(S), write_sweep_module_location),
434 split_string(S, "\n", "\n", [VersionInfo|Modules]),
435 must_be(oneof(["V 1"]), VersionInfo),
436 ( maplist(check_sweep_lib, Modules)
437 -> print_message(informational, installation(sweep(found(Modules))))
438 ; print_message(warning, installation(sweep(not_found(Modules))))
439 ).
440
441check_sweep_lib(Line) :-
442 sub_atom(Line, B, _, A, ' '),
443 sub_atom(Line, 0, B, _, Type),
444 must_be(oneof(['L', 'M']), Type),
445 sub_atom(Line, _, A, 0, Lib),
446 exists_file(Lib).
447
448python_version :-
449 py_call(sys:version, Version),
450 print_message(informational, installation(janus(Version))).
451
452
458
459check_on_path :-
460 current_prolog_flag(executable, EXEFlag),
461 prolog_to_os_filename(EXE, EXEFlag),
462 file_base_name(EXE, Prog),
463 absolute_file_name(EXE, AbsExe,
464 [ access(execute),
465 file_errors(fail)
466 ]),
467 !,
468 prolog_to_os_filename(AbsExe, OsExe),
469 ( absolute_file_name(path(Prog), OnPath,
470 [ access(execute),
471 file_errors(fail)
472 ])
473 -> ( same_file(EXE, OnPath)
474 -> true
475 ; absolute_file_name(path(Prog), OnPathAny,
476 [ access(execute),
477 file_errors(fail),
478 solutions(all)
479 ]),
480 same_file(EXE, OnPathAny)
481 -> print_message(warning, installation(not_first_on_path(OsExe, OnPath)))
482 ; print_message(warning, installation(not_same_on_path(OsExe, OnPath)))
483 )
484 ; print_message(warning, installation(not_on_path(OsExe, Prog)))
485 ).
486check_on_path.
487
488
489 492
507
508test_installation :-
509 test_installation([]).
510
511test_installation(Options) :-
512 absolute_file_name(swi(test/test),
513 TestFile,
514 [ access(read),
515 file_errors(fail),
516 file_type(prolog)
517 ]),
518 !,
519 test_installation_run(TestFile, Options).
520test_installation(_Options) :-
521 print_message(warning, installation(testing(no_installed_tests))).
522
523test_installation_run(TestFile, Options) :-
524 ( option(package(_), Options)
525 -> merge_options(Options,
526 [ core(false),
527 subdirs(false)
528 ], TestOptions)
529 ; merge_options(Options,
530 [ packages(true)
531 ], TestOptions)
532 ),
533 load_files(user:TestFile),
534 current_prolog_flag(verbose, Old),
535 setup_call_cleanup(
536 set_prolog_flag(verbose, silent),
537 user:test([], TestOptions),
538 set_prolog_flag(verbose, Old)).
539
540
541 544
545:- multifile
546 prolog:message//1. 547
548print_issue(Term) :-
549 assertz(issue(Term)),
550 print_message(warning, Term).
551
552issue_url(Properties, URL) :-
553 Local = Properties.get(url),
554 !,
555 issue_base(Base),
556 atom_concat(Base, Local, URL).
557issue_url(Properties, URL) :-
558 Properties.get(source) = library(Segments),
559 !,
560 path_segments_atom(Segments, Base),
561 file_name_extension(Base, html, URLFile),
562 issue_base(Issues),
563 atom_concat(Issues, URLFile, URL).
564
565prolog:message(installation(Message)) -->
566 message(Message).
567
568message(checking) -->
569 { current_prolog_flag(address_bits, Bits) },
570 { current_prolog_flag(arch, Arch) },
571 { current_prolog_flag(home, Home) },
572 { current_prolog_flag(cpu_count, Cores) },
573 [ 'Checking your SWI-Prolog kit for common issues ...'-[], nl, nl ],
574 [ 'Version: ~`.t~24| '-[] ], '$messages':prolog_message(version), [nl],
575 [ 'Address bits: ~`.t~24| ~d'-[Bits] ], [nl],
576 [ 'Architecture: ~`.t~24| ~w'-[Arch] ], [nl],
577 [ 'Installed at: ~`.t~24| ~w'-[Home] ], [nl],
578 [ 'Cores: ~`.t~24| ~w'-[Cores] ], [nl],
579 [ nl ].
580message(perfect) -->
581 [ nl, 'Congratulations, your kit seems sound and complete!'-[] ].
582message(imperfect(N)) -->
583 [ 'Found ~w issues.'-[N] ].
584message(checking(Feature)) -->
585 [ 'Checking ~w ...'-[Feature], flush ].
586message(missing(Properties)) -->
587 [ at_same_line, '~`.t~48| not present'-[] ],
588 details(Properties).
589message(loading(Source)) -->
590 [ 'Loading ~q ...'-[Source], flush ].
591message(ok) -->
592 [ at_same_line, '~`.t~48| ok'-[] ].
593message(optional_not_found(Properties)) -->
594 [ 'Optional ~q ~`.t~48| not present'-[Properties.source] ].
595message(not_found(Properties)) -->
596 [ '~q ~`.t~48| NOT FOUND'-[Properties.source] ],
597 details(Properties).
598message(failed(Properties, false, [])) -->
599 !,
600 [ at_same_line, '~`.t~48| FAILED'-[] ],
601 details(Properties).
602message(failed(Properties, exception(Ex0), [])) -->
603 !,
604 { strip_stack(Ex0, Ex),
605 message_to_string(Ex, Msg) },
606 [ '~w'-[Msg] ],
607 details(Properties).
608message(failed(Properties, true, Messages)) -->
609 [ at_same_line, '~`.t~48| FAILED'-[] ],
610 explain(Messages),
611 details(Properties).
612message(archive(What, Names)) -->
613 [ ' Supported ~w: '-[What] ],
614 list_names(Names).
615message(pcre_missing(Features)) -->
616 [ 'Missing libpcre features: '-[] ],
617 list_names(Features).
618message(not_first_on_path(EXE, OnPath)) -->
619 { public_executable(EXE, PublicEXE),
620 file_base_name(EXE, Prog)
621 },
622 [ 'The first ~w on '-[Prog] ], 'PATH', [ ' is ~p, while '-[OnPath], nl ],
623 [ 'this version is ~p.'-[PublicEXE] ].
624message(not_same_on_path(EXE, OnPath)) -->
625 { public_executable(EXE, PublicEXE),
626 file_base_name(EXE, Prog)
627 },
628 [ 'The ~w on '-[Prog] ], 'PATH', [ ' is ~p, while '-[OnPath], nl ],
629 [ 'this version is ~p.'-[PublicEXE] ].
630message(not_on_path(EXE, Prog)) -->
631 { public_bin_dir(EXE, Dir),
632 prolog_to_os_filename(Dir, OSDir)
633 },
634 [ 'Could not find ~w on '-[Prog] ], 'PATH', [ '. '-[], nl ],
635 [ 'You may wish to add ~p to '-[OSDir] ], 'PATH', [ '. '-[], nl ].
636message(jquery(found(Path))) -->
637 [ ' jQuery from ~w'-[Path] ].
638message(jquery(not_found(File))) -->
639 [ ' Cannot find jQuery (~w)'-[File] ].
640message(sweep(found(Paths))) -->
641 [ ' GNU-Emacs plugin loads'-[] ],
642 sequence(list_file, Paths).
643message(sweep(not_found(Paths))) -->
644 [ ' Could not find all GNU-Emacs libraries'-[] ],
645 sequence(list_file, Paths).
646message(testing(no_installed_tests)) -->
647 [ ' Runtime testing is not enabled.', nl],
648 [ ' Please recompile the system with INSTALL_TESTS enabled.' ].
649message(janus(Version)) -->
650 [ ' Python version ~w'-[Version] ].
651message(ambiguous_autoload(PI, Paths)) -->
652 [ 'The predicate ~p can be autoloaded from multiple libraries:'-[PI]],
653 sequence(list_file, Paths).
654
655public_executable(EXE, PublicProg) :-
656 file_base_name(EXE, Prog),
657 file_directory_name(EXE, ArchDir),
658 file_directory_name(ArchDir, BinDir),
659 file_directory_name(BinDir, Home),
660 file_directory_name(Home, Lib),
661 file_directory_name(Lib, Prefix),
662 atomic_list_concat([Prefix, bin, Prog], /, PublicProg),
663 exists_file(PublicProg),
664 same_file(EXE, PublicProg),
665 !.
666public_executable(EXE, EXE).
667
668public_bin_dir(EXE, Dir) :-
669 public_executable(EXE, PublicEXE),
670 file_directory_name(PublicEXE, Dir).
671
672
673
674'PATH' -->
675 { current_prolog_flag(windows, true) },
676 !,
677 [ '%PATH%'-[] ].
678'PATH' -->
679 [ '$PATH'-[] ].
680
681strip_stack(error(Error, context(prolog_stack(S), Msg)),
682 error(Error, context(_, Msg))) :-
683 nonvar(S).
684strip_stack(Error, Error).
685
686details(Properties) -->
687 { issue_url(Properties, URL), !
688 },
689 [ nl, 'See '-[], url(URL) ].
690details(_) --> [].
691
692explain(Messages) -->
693 { shared_object_error(Messages) },
694 !,
695 [nl],
696 ( { current_prolog_flag(windows, true) }
697 -> [ 'Cannot load required DLL'-[] ]
698 ; [ 'Cannot load required shared library'-[] ]
699 ).
700explain(Messages) -->
701 print_messages(Messages).
702
703shared_object_error(Messages) :-
704 sub_term(Term, Messages),
705 subsumes_term(error(shared_object(open, _Message), _), Term),
706 !.
707
708print_messages([]) --> [].
709print_messages([message(_Term, _Kind, Lines)|T]) -->
710 Lines, [nl],
711 print_messages(T).
712
713list_names([]) --> [].
714list_names([H|T]) -->
715 [ '~w'-[H] ],
716 ( {T==[]}
717 -> []
718 ; [ ', '-[] ],
719 list_names(T)
720 ).
721
722list_file(File) -->
723 [ nl, ' '-[], url(File) ].
724
725
726 729
734
735check_config_files :-
736 check_config_files(Issues),
737 maplist(print_message(warning), Issues).
738
739check_config_files(Issues) :-
740 findall(Issue, check_config_file(Issue), Issues).
741
742check_config_file(config(Id, move(Type, OldFile, NewFile))) :-
743 old_config(Type, Id, OldFile),
744 access_file(OldFile, exist),
745 \+ ( new_config(Type, Id, NewFile),
746 access_file(NewFile, exist)
747 ),
748 once(new_config(Type, Id, NewFile)).
749check_config_file(config(Id, different(Type, OldFile, NewFile))) :-
750 old_config(Type, Id, OldFile),
751 access_file(OldFile, exist),
752 new_config(Type, Id, NewFile),
753 access_file(NewFile, exist),
754 \+ same_file(OldFile, NewFile).
755
760
761update_config_files :-
762 old_config(Type, Id, OldFile),
763 access_file(OldFile, exist),
764 \+ ( new_config(Type, Id, NewFile),
765 access_file(NewFile, exist)
766 ),
767 ( new_config(Type, Id, NewFile),
768 \+ same_file(OldFile, NewFile),
769 create_parent_dir(NewFile)
770 -> catch(rename_file(OldFile, NewFile), E,
771 print_message(warning, E)),
772 print_message(informational, config(Id, moved(Type, OldFile, NewFile)))
773 ),
774 fail.
775update_config_files.
776
777old_config(file, init, File) :-
778 current_prolog_flag(windows, true),
779 win_folder(appdata, Base),
780 atom_concat(Base, '/SWI-Prolog/swipl.ini', File).
781old_config(file, init, File) :-
782 expand_file_name('~/.swiplrc', [File]).
783old_config(directory, lib, Dir) :-
784 expand_file_name('~/lib/prolog', [Dir]).
785old_config(directory, xpce, Dir) :-
786 expand_file_name('~/.xpce', [Dir]).
787old_config(directory, history, Dir) :-
788 expand_file_name('~/.swipl-dir-history', [Dir]).
789old_config(directory, pack, Dir) :-
790 ( catch(expand_file_name('~/lib/swipl/pack', [Dir]), _, fail)
791 ; absolute_file_name(swi(pack), Dir,
792 [ file_type(directory), solutions(all) ])
793 ).
794
795new_config(file, init, File) :-
796 absolute_file_name(user_app_config('init.pl'), File,
797 [ solutions(all) ]).
798new_config(directory, lib, Dir) :-
799 config_dir(user_app_config(lib), Dir).
800new_config(directory, xpce, Dir) :-
801 config_dir(user_app_config(xpce), Dir).
802new_config(directory, history, Dir) :-
803 config_dir(user_app_config('dir-history'), Dir).
804new_config(directory, pack, Dir) :-
805 config_dir([app_data(pack), swi(pack)], Dir).
806
807config_dir(Aliases, Dir) :-
808 is_list(Aliases),
809 !,
810 ( member(Alias, Aliases),
811 absolute_file_name(Alias, Dir,
812 [ file_type(directory), solutions(all) ])
813 *-> true
814 ; member(Alias, Aliases),
815 absolute_file_name(Alias, Dir,
816 [ solutions(all) ])
817 ).
818config_dir(Alias, Dir) :-
819 ( absolute_file_name(Alias, Dir,
820 [ file_type(directory), solutions(all) ])
821 *-> true
822 ; absolute_file_name(Alias, Dir,
823 [ solutions(all) ])
824 ).
825
826create_parent_dir(NewFile) :-
827 file_directory_name(NewFile, Dir),
828 create_parent_dir_(Dir).
829
830create_parent_dir_(Dir) :-
831 exists_directory(Dir),
832 '$my_file'(Dir),
833 !.
834create_parent_dir_(Dir) :-
835 file_directory_name(Dir, Parent),
836 Parent \== Dir,
837 create_parent_dir_(Parent),
838 make_directory(Dir).
839
840prolog:message(config(Id, Issue)) -->
841 [ 'Config: '-[] ],
842 config_description(Id),
843 config_issue(Issue).
844
845config_description(init) -->
846 [ '(user initialization file) '-[], nl ].
847config_description(lib) -->
848 [ '(user library) '-[], nl ].
849config_description(pack) -->
850 [ '(add-ons) '-[], nl ].
851config_description(history) -->
852 [ '(command line history) '-[], nl ].
853config_description(xpce) -->
854 [ '(gui) '-[], nl ].
855
856config_issue(move(Type, Old, New)) -->
857 [ ' found ~w "~w"'-[Type, Old], nl ],
858 [ ' new location is "~w"'-[New] ].
859config_issue(moved(Type, Old, New)) -->
860 [ ' found ~w "~w"'-[Type, Old], nl ],
861 [ ' moved to new location "~w"'-[New] ].
862config_issue(different(Type, Old, New)) -->
863 [ ' found different ~w "~w"'-[Type, Old], nl ],
864 [ ' new location is "~w"'-[New] ].
865
866 869
873
874check_autoload :-
875 findall(Name/Arity, '$in_library'(Name, Arity, _Path), PIs),
876 msort(PIs, Sorted),
877 clumped(Sorted, Clumped),
878 sort(2, >=, Clumped, ClumpedS),
879 ambiguous_autoload(ClumpedS).
880
881ambiguous_autoload([PI-N|T]) :-
882 N > 1,
883 !,
884 warn_ambiguous_autoload(PI),
885 ambiguous_autoload(T).
886ambiguous_autoload(_).
887
888warn_ambiguous_autoload(PI) :-
889 PI = Name/Arity,
890 findall(PlFile,
891 ( '$in_library'(Name, Arity, File),
892 file_name_extension(File, pl, PlFile)
893 ), PlFiles),
894 print_message(warning, installation(ambiguous_autoload(PI, PlFiles)))