mes/guile/mescc.scm

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#! /bin/sh
# -*-scheme-*-
GODIR=${GODIR-@GODIR@}
GUILEDIR=${GUILEDIR-@GUILEDIR@}
[ "$GODIR" = @"GODIR"@ ] && GODIR=$(dirname $0)
[ "$GUILEDIR" = @"GUILEDIR"@ ] && GUILEDIR=$(dirname $0)
export GUILE_AUTO_COMPILE=${GUILE_AUTO_COMPILE-0}
exec ${GUILE-guile} -L $GUILEDIR -C $GODIR -e '(mescc)' -s "$0" "$@"
!#
;;; Mes --- The Maxwell Equations of Software
;;; Copyright © 2016,2017 Jan Nieuwenhuizen <janneke@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; Mes is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; Mes is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Mes. If not, see <http://www.gnu.org/licenses/>.
;; The Maxwell Equations of Software -- John McCarthy page 13
;; http://www.softwarepreservation.org/projects/LISP/book/LISP%201.5%20Programmers%20Manual.pdf
#!
Run with Guile-1.8:
GUILE='~/src/guile-1.8/build/pre-inst-guile --debug -q' guile/mescc.scm
!#
(define-module (mescc)
#:use-module (language c99 compiler)
#:use-module (ice-9 getopt-long)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (main))
(define %prefix (if (string-prefix? "@PREFIX" "@PREFIX@") "" "@PREFIX@"))
(define %datadir (if (string-prefix? "@DATADIR" "@DATADIR@") "" "@DATADIR@"))
(define %docdir (if (string-prefix? "@DOCDIR" "@DOCDIR@") "doc/" "@DOCDIR@"))
(define %moduledir "module/")
(define %version (if (string-prefix? "@VERSION" "@VERSION@") "git" "@VERSION@"))
(module-define! (resolve-module '(language c99 compiler)) '%datadir %datadir)
(module-define! (resolve-module '(language c99 compiler)) '%docdir %docdir)
(module-define! (resolve-module '(language c99 compiler)) '%moduledir %moduledir)
(module-define! (resolve-module '(language c99 compiler)) '%prefix %prefix)
(module-define! (resolve-module '(language c99 compiler)) '%version %version)
(define (parse-opts args)
(let* ((option-spec
'((c (single-char #\c))
(D (single-char #\D) (value #t))
(help (single-char #\h))
(I (single-char #\I) (value #t))
(o (single-char #\o) (value #t))
(version (single-char #\V) (value #t))))
(options (getopt-long args option-spec))
(help? (option-ref options 'help #f))
(files (option-ref options '() '()))
(usage? (and (not help?) (null? files)))
(version? (option-ref options 'version #f)))
(or
(and version?
(format (current-output-port) "mescc.scm (mes) ~a\n" %version))
(and (or help? usage?)
(format (or (and usage? (current-error-port)) (current-output-port)) "\
Usage: mescc [OPTION]... FILE...
-c compile and assemble, but do not link
-D DEFINE define DEFINE
-h, --help display this help and exit
-I DIR append DIR to include path
-o FILE write output to FILE
-v, --version display version and exit
")
(exit (or (and usage? 2) 0)))
options)))
(define (object->info file)
(let* ((string (with-input-from-file file read-string))
(module (resolve-module '(language c99 compiler))))
(eval-string string module)))
(define (object->info file)
(let* ((lst (with-input-from-file file read))
(module (resolve-module '(language c99 compiler))))
(eval lst module)))
(define (source->info defines includes)
(lambda (file)
(with-input-from-file file
(lambda ()
((c99-input->info #:defines defines #:includes includes))))))
(define (main args)
(let* ((options (parse-opts args))
(files (option-ref options '() '()))
(file (if (null? files) (string-append %docdir "examples/main.c")
(car files)))
(compile? (option-ref options 'c #f))
(sources (filter (cut string-suffix? ".c" <>) files))
(objects (filter (negate (cut string-suffix? ".c" <>)) files))
(base (substring file (1+ (or (string-rindex file #\/) -1)) (- (string-length file) 2)))
(out (option-ref options 'o (if compile? (string-append base ".o") "a.out")))
(multi-opt (lambda (option) (lambda (o) (and (eq? (car o) option) (cdr o)))))
(defines (reverse (filter-map (multi-opt 'D) options)))
(includes (reverse (filter-map (multi-opt 'I) options))))
(when (getenv "MES_DEBUG") (format (current-error-port) "options=~s\n" options)
(format (current-error-port) "output: ~a\n" out))
(if (and (pair? sources) (pair? objects)) (error "cannot mix source and object files:" files))
(format (current-error-port) "inputs: ~a\n" files)
(with-output-to-file out
(lambda ()
(set-port-encoding! (current-output-port) "ISO-8859-1")
(if (pair? objects) (let ((infos (map object->info objects)))
(if compile? (infos->object infos)
(infos->elf infos)))
(let ((infos (map (source->info defines includes) sources)))
(if compile? (infos->object infos)
(infos->elf infos))))))
(if (not compile?)
(chmod out #o755))))