/* Part of SWI-Prolog Author: Jan Wielemaker E-mail: J.Wielemaker@vu.nl WWW: http://www.swi-prolog.org Copyright (c) 2018-2023, VU University Amsterdam CWI, Amsterdam SWI-Prolog Solutions b.v. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ :- module(prolog_config, [ prolog_dump_runtime_variables/0, prolog_config/2 ]). /** Provide configuration information This module provides information about the configuration to facilitate linking against Prolog, embedding Prolog or calling Prolog. */ :- multifile prolog:runtime_config/2. %! prolog_dump_runtime_variables % % Dump the current configuration in shell format. This predicate is % called when Prolog is started using the commandline option % `--dump-runtime-variables` prolog_dump_runtime_variables :- ( '$cmd_option_val'(config, Format), Format \== '' -> prolog_dump_runtime_variables(Format) ; prolog_dump_runtime_variables(sh) ). prolog_dump_runtime_variables(Format) :- print_flag(home, 'PLBASE', Format), print_flag(pack_path, 'SWIPL_PACK_PATH', Format), print_flag(arch, 'PLARCH', Format), print_flag(address_bits, 'PLBITS', Format), print_flag(version, 'PLVERSION', Format), print_flag(shared_object_extension, 'PLSOEXT', Format), print_flag(shared_object_search_path, 'PLSOPATH', Format), print_flag(c_libdir, 'PLLIBDIR', Format), print_flag(c_lib, 'PLLIB', Format), print_flag(libswipl, 'PLLIBSWIPL', Format), print_flag(open_shared_object, 'PLSHARED', Format), print_flag(threads, 'PLTHREADS', Format). print_flag(Flag, Var, Format) :- ( prolog:runtime_config(Flag, Value) -> print_config(Format, Var, Value) ; prolog_config(Flag, Value) -> print_config(Format, Var, Value) ; true ). %! prolog_config(+Config, -Value) is semidet. % % Get information on the configuration of the current Prolog system. % Mostly used to support scripting. prolog_config(Flag, Value) :- boolean_flag(Flag), ( current_prolog_flag(Flag, true) -> Value = yes ; Value = no ). prolog_config(c_libdir, Value) :- current_prolog_flag(home, Home), ( current_prolog_flag(c_libdir, Rel) -> atomic_list_concat([Home, Rel], /, Value) ; current_prolog_flag(msys2, true) -> current_prolog_flag(arch, Arch), atomic_list_concat([Home, bin, Arch], /, Value) ; current_prolog_flag(windows, true) -> atomic_list_concat([Home, bin], /, Value) ; apple_bundle_libdir(LibDir) -> Value = LibDir ; current_prolog_flag(arch, Arch) -> atomic_list_concat([Home, lib, Arch], /, Value) ). prolog_config(apple_bundle_libdir, LibDir) :- apple_bundle_libdir(LibDir). prolog_config(c_lib, '-lswipl'). prolog_config(pack_path, Value) :- findall(Dir, absolute_file_name(pack(.), Dir, [ file_errors(fail), solutions(all) ]), Dirs), maplist(prolog_to_os_filename, Dirs, OSDirs), current_prolog_flag(path_sep, Sep), atomic_list_concat(OSDirs, Sep, Value). prolog_config(Flag, Value) :- current_prolog_flag(Flag, Value). %! apple_bundle_libdir(-LibDir) % % If we are part of a MacOS bundle the C libraries are in the bundle % ``Frameworks`` directory and the executable is in the bundle % ``MacOS`` directory. apple_bundle_libdir(LibDir) :- current_prolog_flag(apple, true), current_prolog_flag(executable, Exe), file_directory_name(Exe, ExeDir), file_base_name(ExeDir, 'MacOS'), file_directory_name(ExeDir, ContentsDir), file_base_name(ContentsDir, 'Contents'), atomic_list_concat([ContentsDir, 'Frameworks'], /, LibDir), exists_directory(LibDir). boolean_flag(threads). boolean_flag(open_shared_object). print_config(sh, Var, Value) :- format('~w=\"~w\";~n', [Var, Value]). print_config(cmd, Var, Value) :- ( file_var(Var) -> prolog_to_os_filename(Value, OSValue), format('SET ~w=~w~n', [Var, OSValue]) ; format('SET ~w=~w~n', [Var, Value]) ). file_var('PLBASE').