;;; EMU-ELS --- list of EMU modules to install. -*-Emacs-Lisp-*-

;;; Commentary:

;; APEL-MK imports `emu-modules' and `emu-modules-to-compile' from here.

;;; Code:

(defvar emu-modules-not-to-compile nil)
(defvar emu-modules-to-compile nil)

;; We use compile-time evaluation heavily.  So, order of compilation is
;; very significant.  For example, loading some module before compiling
;; it will cause "compile-time" evaluation many times.
(defvar emu-modules
  (nconc
   ;; modules are sorted by compilation order.
   '(static broken)

   ;; product information.
   '(product apel-ver)

   ;; poe modules; poe modules depend on static.
   '(pym)
   (if (featurep 'xemacs)
       ;; XEmacs.
       '(poe-xemacs poe)
     ;; Emacs 20 and later.
     '(poe))

   ;; pcustom modules; pcustom modules depend on poe.
   '(pcustom)

   ;; pccl modules; pccl modules depend on broken.
   (cond
    ((featurep 'xemacs)
     (cond
      ;; XEmacs 21 w/ mule.
      ((and (featurep 'mule)
	    (>= emacs-major-version 21))
       '(pccl-20 pccl))
      (t
       '(pccl))))
    ((featurep 'mule)
     ;; Emacs 20.
     '(pccl-20 pccl))
    (t
     '(pccl)))

   ;; pces modules; pces modules depend on poe.
   (cond
    ((featurep 'xemacs)
     (cond
      ((featurep 'mule)
       ;; XEmacs w/ mule.
       ;; pces-xfc depends pces-20, so we compile pces-20 first.
       '(pces-20 pces-xm pces-xfc pces))
      ((featurep 'file-coding)
       ;; XEmacs w/ file-coding.
       ;; pces-xfc depends pces-20, so we compile pces-20 first.
       '(pces-20 pces-xfc pces))
      (t
       '(pces-raw pces))))
    ((featurep 'mule)
     ;; Emacs 20.3 and later.
     ;; pces-e20 depends pces-20, so we compile pces-20 first.
     '(pces-20 pces-e20 pces))
    (t
     '(pces-raw pces)))

   ;; poem modules; poem modules depend on pces.
   (cond
    ((featurep 'mule)
     (if (featurep 'xemacs)
	 ;; XEmacs w/ mule.
	 '(poem-xm poem)
       ;; Emacs 20.3 and later.
       '(poem-e20_3 poem-e20 poem)))
    (t
     '(poem-ltn1 poem)))

   ;; mcharset modules; mcharset modules depend on poem and pcustom.
   (cond
    ((featurep 'mule)
     (if (featurep 'xemacs)
	 ;; XEmacs w/ mule.
	 (if (featurep 'utf-2000)
	     ;; XEmacs w/ UTF-2000.
	     (setq emu-modules-not-to-compile
		   (cons 'mcs-xmu emu-modules-not-to-compile)))
       ;; mcs-xm depends mcs-20, so we compile mcs-20 first.
       '(mcs-20 mcs-xmu mcs-xm mcharset)
       ;; Emacs 20 and later.
       ;; mcs-e20 depends mcs-20, so we compile mcs-20 first.
       '(mcs-20 mcs-e20 mcharset)))
    (t
     '(mcs-ltn1 mcharset)))

   ;; invisible modules; provided for backward compatibility with old "tm".
   (cond
    ((featurep 'xemacs)
     ;; XEmacs.
     '(inv-xemacs invisible))
    ((>= emacs-major-version 23)
     ;; Emacs 23 and later
     '(inv-23 invisible))
    (t
     ;; Emacs 19 and later.
     '(inv-19 invisible)))

   ;; emu modules; provided for backward compatibility with old "tm".
   '(emu)

   ;; emu submodules; text/richtext and text/enriched support.
   '(richtext)

   ;; mule-caesar.el; part of apel-modules, but it is version-dependent.
   '(mule-caesar)))

;; Generate `emu-modules-to-compile' from `emu-modules-not-to-compile'
;; and `emu-modules'.
(let ((modules emu-modules-not-to-compile))
  (setq emu-modules-to-compile (copy-sequence emu-modules))
  (while modules
    (setq emu-modules-to-compile (delq (car modules) emu-modules-to-compile)
	  modules (cdr modules))))

;;; EMU-ELS ends here
