#!/bin/sh
#|
cd "`dirname \"$0\"`"
src="configure.ac"
tgt="../configure"
if [ ! -e "$src" ]; then echo "abort: did not find $src"; exit 1; fi
echo "Creating $tgt from $src"
if [ -e "$tgt" ]; then
  /bin/echo -n "overwriting $tgt, Ctrl-C to abort, enter to continue "; read R;
fi
autoconf "$src" | mzscheme -qr "$0" > "$tgt"
chmod +x "$tgt"
exit 0
|#

;; When autoconf produces `configure', it includes many
;;  options that do not apply to PLT software. We want to
;;  get rid of them, so that `configure --help' produces
;;  valid information.

(define skip-rxs
  (map (lambda (s)
	 (regexp (format "^  --~a=DIR" s)))
       '(sbindir 
	 libexecdir 
	 sysconfdir
	 sharedstatedir
	 localstatedir
	 oldincludedir
	 infodir)))

(let loop ()
  (let ([l (read-line)])
    (unless (eof-object? l)
      (if (ormap (lambda (rx)
		   (regexp-match rx l))
		 skip-rxs)
	  ;; Skip
	  (loop)
	  ;; Copy
	  (begin
	    (printf "~a~n" l)
	    (loop))))))