/usr/bin/scheme48-config is in scheme48 1.9-5.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #! /usr/bin/scheme-srfi-7
; Part of Scheme 48 1.9.  See file COPYING for notices and license.
; Authors: Mike Sperber
(program
  (requires srfi-37) ; args-fold
  (code
   (define (main args)
     (call-with-current-continuation
      (lambda (exit)
	(define maybe-space
	  (let ((first? #t))
	    (lambda ()
	      (if first?
		  (set! first? #f)
		  (write-char #\space)))))
	(let ((options
	       (list (option '(#\? #\h "help") #f #f
			     (lambda (option name arg . stuff)
			       (display "usage: ")
			       (display (car args))
			       (display " [--ld] [--cc] [--libs-external] [--cflags-external]")
			       (newline)))
		     (option '("ld") #f #f
			     (lambda (option name arg . stuff)
			       (maybe-space)
			       (display "x86_64-linux-gnu-gcc")))
		     (option '("cc") #f #f
			     (lambda (option name arg . stuff)
			       (maybe-space)
			       (display "x86_64-linux-gnu-gcc")))
		     (option '("libs-external") #f #f
			     (lambda (option name arg . stuff)
			       (maybe-space)
			       (display "-shared -Wl,-z,relro -pthread -rdynamic -z relro")))
		     (option '("cflags-external") #f #f
			     (lambda (option name arg . stuff)
			       (maybe-space)
			       (display "-fPIC")
			       (display " -I/usr/include"))))))
	  (args-fold (cdr args) options
		     (lambda (option name arg . stuff)
		       (display "unrecognized option: ")
		       (display name)
		       (newline)
		       (exit -1))
		    (lambda (operand . stuff)
		      (display "extra command-line argument: ")
		      (display operand)
		      (newline)
		      (exit -1))))))
     0)))
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