-- Copyright (C) 2007 Gabriel Dos Reis
-- All rights reserved.
-- Copyright (C) 2007, Gabriel Dos Reis.
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
--
--     - Redistributions of source code must retain the above copyright
--       notice, this list of conditions and the following disclaimer.
--
--     - 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.
--
--     - Neither the name of The Numerical ALgorithms Group Ltd. nor the
--       names of its contributors may be used to endorse or promote products
--       derived from this software without specific prior written permission.
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-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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-- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--
--

--
-- This file collects and documents routines common to the driver of
-- both the OpenAxiom compiler and interpreter.
--

import '"boot-pkg"
)package "BOOT"

+++ Initialization routine run by the core system before handing off
+++ to the interpreter or compiler.  
+++ ??? This part is still in flux.
AxiomCore::%sysInit() ==
  SETQ(_*PACKAGE_*, FIND_-PACKAGE '"BOOT")


+++ Returns the root directory of the running system.
+++ A directory specified on command line takes precedence
+++ over directory specified at configuration time.
systemRootDirectory() ==
  dir := ASSOC(Option '"system", %systemOptions()) =>
    ensureTrailingSlash cdr dir
  $systemInstallationDirectory


+++ Returns the system algebra directory, as specified on command
+++ line.  nil, otherwise.
systemAlgebraDirectory() ==
  dir := ASSOC(Option '"sysalg", %systemOptions()) =>
    ensureTrailingSlash cdr dir
  nil