mescc: support -c, -o.

[mes.git] / guile / mescc.scm

diff --git a/guile/mescc.scm b/guile/mescc.scm
index 83afbd9e1afe70bd1a634eac5f557208f3ef1e8e..ca29bbc32dcc7b2612cd8bb02143a8ab2ef5cb60 100755 (executable)
--- a/guile/mescc.scm
+++ b/guile/mescc.scm
@@ -2,8 +2,8 @@
 # -*-scheme-*-
 GODIR=${GODIR-@GODIR@}
 GUILEDIR=${GUILEDIR-@GUILEDIR@}
-[ "$GODIR" = @"GODIR"@ ] && GODIR=guile
-[ "$GUILEDIR" = @"GUILEDIR"@ ] && GUILEDIR=guile
+[ "$GODIR" = @"GODIR"@ ] && GODIR=$(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 "$0" "$@"
 !#
@@ -36,8 +36,9 @@ 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 rdelim)
-  #:use-module (ice-9 pretty-print)
+  #: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@"))
@@ -51,19 +52,76 @@ GUILE='~/src/guile-1.8/build/pre-inst-guile --debug -q' guile/mescc.scm
 (module-define! (resolve-module '(language c99 compiler)) '%prefix %prefix)
 (module-define! (resolve-module '(language c99 compiler)) '%version %version)
 
-(define (main arguments)
-  (let* ((files (cdr arguments))
-         (file (if (null? files) (string-append %docdir "examples/main.c")
-                   (car files))))
-    (cond ((equal? file "--help")
-           (format (current-error-port) "Usage: mescc.scm [--help|--version|FILE] > a.out\n")
-           (exit 0))
-          ((equal? file "--version")
-           (format (current-error-port) "mescc.scm (mes) ~a\n" %version)
-           (exit 0)))
-    (format (current-error-port) "input: ~a\n" file)
+(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
-      c99-input->elf)))
+      (lambda ()
+        ((c99-input->info #:defines defines #:includes includes))))))
 
-(format (current-error-port) "compiler loaded\n")
-(format (current-error-port) "calling ~s\n" (cons 'main (command-line)))
+(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))))