Module:    build-system
Synopsis:  A build-system for Dylan PC Applications in Dylan
Author:    Nosa Omo
Copyright:    Original Code is Copyright (c) 1995-2004 Functional Objects, Inc.
              All rights reserved.
License:      Functional Objects Library Public License Version 1.0
Dual-license: GNU Lesser General Public License
Warranty:     Distributed WITHOUT WARRANTY OF ANY KIND


define variable $personal-install :: false-or(<directory-locator>) = #f;
define variable $personal-lib     :: false-or(<directory-locator>) = #f;
define variable $personal-bin     :: false-or(<directory-locator>) = #f;
define variable $personal-build   :: false-or(<directory-locator>) = #f;

// We don't ensure system directories because nothing is installed there.
// By definition they had to have been already created
define variable $system-release      :: false-or(<directory-locator>) = #f;
define variable $system-install      :: false-or(<directory-locator>) = #f;
define variable $system-lib          :: false-or(<directory-locator>) = #f;
define variable $system-bin          :: false-or(<directory-locator>) = #f;
define variable $redistributable-bin :: false-or(<directory-locator>) = #f;

define method configure-build-system () => ()
  local method ensure-subdirectory-exists
	    (locator :: <directory-locator>, #rest subpath) 
	 => (subdirectory :: <directory-locator>)
	  let subdirectory = apply(subdirectory-locator, locator, subpath);
	  ensure-directories-exist(subdirectory);
	  subdirectory
        end method ensure-subdirectory-exists;

  $personal-install := user-install-path();
  $personal-lib :=
    $personal-install & ensure-subdirectory-exists($personal-install, "lib");
  $personal-bin :=
    $personal-install & ensure-subdirectory-exists($personal-install, "bin");
  $personal-build :=
    user-build-path()
    | ($personal-install & subdirectory-locator($personal-install, "build"));

  $system-release := system-release-path();
  $system-install := system-install-path() | $system-release;
  $system-lib := subdirectory-locator($system-install, "lib");
  $system-bin := subdirectory-locator($system-install, "bin");
  $redistributable-bin
    := subdirectory-locator($system-install, "redistributable");
end method;

configure-build-system();