1 /*
2 * Copyright (c) 1999-2016 Apple Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7 * Reserved. This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.0 (the 'License'). You may not use this file
10 * except in compliance with the License. Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19 * License for the specific language governing rights and limitations
20 * under the License."
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24 /*
25 * Mach Operating System
26 * Copyright (c) 1990 Carnegie-Mellon University
27 * Copyright (c) 1989 Carnegie-Mellon University
28 * Copyright (c) 1988 Carnegie-Mellon University
29 * Copyright (c) 1987 Carnegie-Mellon University
30 * All rights reserved. The CMU software License Agreement specifies
31 * the terms and conditions for use and redistribution.
32 */
33
34 /*
35 * Copyright (c) 1980 Regents of the University of California.
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms are permitted
39 * provided that the above copyright notice and this paragraph are
40 * duplicated in all such forms and that any documentation,
41 * advertising materials, and other materials related to such
42 * distribution and use acknowledge that the software was developed
43 * by the University of California, Berkeley. The name of the
44 * University may not be used to endorse or promote products derived
45 * from this software without specific prior written permission.
46 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
48 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
49 */
50
51 #ifndef lint
52 static char sccsid[] __attribute__((used)) = "@(#)mkmakefile.c 5.21 (Berkeley) 6/18/88";
53 #endif /* not lint */
54
55 /*
56 * Build the makefile for the system, from
57 * the information in the files files and the
58 * additional files for the machine being compiled to.
59 */
60
61 #include <stdio.h>
62 #include <unistd.h> /* for unlink */
63 #include <ctype.h>
64 #include "parser.h"
65 #include "config.h"
66
67 void read_files(void);
68 void do_objs(FILE *fp, const char *msg, int ext, int flags);
69 void do_files(FILE *fp, const char *msg, char ext);
70 void do_machdep(FILE *ofp);
71 void do_rules(FILE *f);
72 void copy_dependencies(FILE *makin, FILE *makout);
73
74 struct file_list *fl_lookup(char *file);
75 struct file_list *fltail_lookup(char *file);
76 struct file_list *new_fent(void);
77
78 void put_source_file_name(FILE *fp, struct file_list *tp);
79
80
81 #define next_word(fp, wd) \
82 { const char *word = get_word(fp); \
83 if (word == (char *)EOF) \
84 return; \
85 else \
86 wd = word; \
87 }
88
89 static struct file_list *fcur;
90 const char *tail(const char *fn);
91 char *allCaps(char *str);
92
93 /*
94 * Lookup a file, by name.
95 */
96 struct file_list *
fl_lookup(char * file)97 fl_lookup(char *file)
98 {
99 struct file_list *fp;
100
101 for (fp = ftab; fp != 0; fp = fp->f_next) {
102 if (eq(fp->f_fn, file)) {
103 return fp;
104 }
105 }
106 return 0;
107 }
108
109 /*
110 * Lookup a file, by final component name.
111 */
112 struct file_list *
fltail_lookup(char * file)113 fltail_lookup(char *file)
114 {
115 struct file_list *fp;
116
117 for (fp = ftab; fp != 0; fp = fp->f_next) {
118 if (eq(tail(fp->f_fn), tail(file))) {
119 return fp;
120 }
121 }
122 return 0;
123 }
124
125 /*
126 * Make a new file list entry
127 */
128 struct file_list *
new_fent(void)129 new_fent(void)
130 {
131 struct file_list *fp;
132
133 fp = (struct file_list *) malloc(sizeof *fp);
134 fp->f_needs = 0;
135 fp->f_next = 0;
136 fp->f_flags = 0;
137 fp->f_type = 0;
138 fp->f_extra = (char *) 0;
139 if (fcur == 0) {
140 fcur = ftab = fp;
141 } else {
142 fcur->f_next = fp;
143 }
144 fcur = fp;
145 return fp;
146 }
147
148 char *COPTS;
149
150 const char *
get_VPATH(void)151 get_VPATH(void)
152 {
153 static char *vpath = NULL;
154
155 if ((vpath == NULL) &&
156 ((vpath = getenv("VPATH")) != NULL) &&
157 (*vpath != ':')) {
158 char *buf = malloc((unsigned)(strlen(vpath) + 2));
159
160 vpath = strcat(strcpy(buf, ":"), vpath);
161 }
162
163 return vpath ? vpath : "";
164 }
165
166
167 /*
168 * Build the makefile from the skeleton
169 */
170 void
makefile(void)171 makefile(void)
172 {
173 FILE *ifp, *ofp;
174 FILE *dfp;
175 char pname[BUFSIZ];
176 char line[BUFSIZ];
177 struct opt *op;
178
179 read_files();
180 (void) sprintf(line, "%s/Makefile.template", config_directory);
181 ifp = fopenp(VPATH, line, pname, "r");
182 if (ifp == 0) {
183 perror(line);
184 exit(1);
185 }
186 dfp = fopen(path("Makefile"), "r");
187 rename(path("Makefile"), path("Makefile.old"));
188 unlink(path("Makefile.old"));
189 ofp = fopen(path("Makefile"), "w");
190 if (ofp == 0) {
191 perror(path("Makefile"));
192 exit(1);
193 }
194 fprintf(ofp, "SOURCE_DIR=%s\n", source_directory);
195
196 fprintf(ofp, "export CONFIG_DEFINES =");
197 if (profiling) {
198 fprintf(ofp, " -DGPROF");
199 }
200
201 for (op = opt; op; op = op->op_next) {
202 if (op->op_value) {
203 fprintf(ofp, " -D%s=\"%s\"", op->op_name, op->op_value);
204 } else {
205 fprintf(ofp, " -D%s", op->op_name);
206 }
207 }
208 fprintf(ofp, "\n");
209 for (op = mkopt; op; op = op->op_next) {
210 if (op->op_value) {
211 fprintf(ofp, "%s=%s\n", op->op_name, op->op_value);
212 } else {
213 fprintf(ofp, "%s\n", op->op_name);
214 }
215 }
216
217 while (fgets(line, BUFSIZ, ifp) != 0) {
218 if (*line == '%') {
219 goto percent;
220 }
221 if (profiling && strncmp(line, "COPTS=", 6) == 0) {
222 char *cp;
223 fprintf(ofp,
224 "GPROF.EX=$(SOURCE_DIR)/machdep/%s/gmon.ex\n", machinename);
225 cp = index(line, '\n');
226 if (cp) {
227 *cp = 0;
228 }
229 cp = line + 6;
230 while (*cp && (*cp == ' ' || *cp == '\t')) {
231 cp++;
232 }
233 COPTS = malloc((unsigned)(strlen(cp) + 1));
234 if (COPTS == 0) {
235 printf("config: out of memory\n");
236 exit(1);
237 }
238 strcpy(COPTS, cp);
239 fprintf(ofp, "%s -pg\n", line);
240 continue;
241 }
242 fprintf(ofp, "%s", line);
243 continue;
244 percent:
245 if (eq(line, "%OBJS\n")) {
246 do_objs(ofp, "OBJS=", -1, 0);
247 } else if (eq(line, "%LIBOBJS\n")) {
248 do_objs(ofp, "LIBOBJS=", -1, LIBRARYDEP);
249 } else if (eq(line, "%CFILES\n")) {
250 do_files(ofp, "CFILES=", 'c');
251 do_objs(ofp, "COBJS=", 'c', 0);
252 } else if (eq(line, "%CXXFILES\n")) {
253 do_files(ofp, "CXXFILES=", 'p');
254 do_objs(ofp, "CXXOBJS=", 'p', 0);
255 } else if (eq(line, "%SFILES\n")) {
256 do_files(ofp, "SFILES=", 's');
257 do_objs(ofp, "SOBJS=", 's', 0);
258 } else if (eq(line, "%MACHDEP\n")) {
259 do_machdep(ofp);
260 } else if (eq(line, "%RULES\n")) {
261 do_rules(ofp);
262 } else {
263 fprintf(stderr,
264 "Unknown %% construct in generic makefile: %s",
265 line);
266 }
267 }
268 if (dfp != NULL) {
269 copy_dependencies(dfp, ofp);
270 (void) fclose(dfp);
271 }
272 (void) fclose(ifp);
273 (void) fclose(ofp);
274 }
275
276 /*
277 * Read in the information about files used in making the system.
278 * Store it in the ftab linked list.
279 */
280 void
read_files(void)281 read_files(void)
282 {
283 FILE *fp;
284 struct file_list *tp, *pf;
285 struct device *dp;
286 struct opt *op;
287 const char *wd;
288 char *this, *needs;
289 const char *devorprof;
290 int options;
291 int not_option;
292 int f_flags;
293 char pname[BUFSIZ];
294 char fname[1024];
295 char *rest = (char *) 0;
296 int nreqs, first = 1, isdup;
297
298 ftab = 0;
299 (void) sprintf(fname, "%s/files", config_directory);
300 openit:
301 fp = fopenp(VPATH, fname, pname, "r");
302 if (fp == 0) {
303 perror(fname);
304 exit(1);
305 }
306 next:
307 options = 0;
308 rest = (char *) 0;
309 /*
310 * filename [ standard | optional ]
311 * [ dev* | profiling-routine ] [ device-driver]
312 */
313 wd = get_word(fp);
314 if (wd == (char *)EOF) {
315 (void) fclose(fp);
316 if (first == 1) {
317 (void) sprintf(fname, "%s/files.%s", config_directory, machinename);
318 first++;
319 goto openit;
320 }
321 return;
322 }
323 if (wd == 0) {
324 goto next;
325 }
326 /*
327 * Allow comment lines beginning witha '#' character.
328 */
329 if (*wd == '#') {
330 while ((wd = get_word(fp)) && wd != (char *)EOF) {
331 ;
332 }
333 goto next;
334 }
335
336 this = ns(wd);
337 next_word(fp, wd);
338 if (wd == 0) {
339 printf("%s: No type for %s.\n",
340 fname, this);
341 exit(1);
342 }
343 if ((pf = fl_lookup(this)) && (pf->f_type != INVISIBLE || pf->f_flags)) {
344 isdup = 1;
345 } else {
346 isdup = 0;
347 }
348 tp = 0;
349 nreqs = 0;
350 devorprof = "";
351 needs = 0;
352 f_flags = 0;
353 if (eq(wd, "standard")) {
354 goto checkdev;
355 }
356 if (!eq(wd, "optional")) {
357 printf("%s: %s must be optional or standard\n", fname, this);
358 exit(1);
359 }
360 if (strncmp(this, "OPTIONS/", 8) == 0) {
361 options++;
362 }
363 not_option = 0;
364 nextopt:
365 next_word(fp, wd);
366 if (wd == 0) {
367 goto doneopt;
368 }
369 if (eq(wd, "not")) {
370 not_option = !not_option;
371 goto nextopt;
372 }
373 devorprof = wd;
374 if (eq(wd, "device-driver") || eq(wd, "profiling-routine")) {
375 next_word(fp, wd);
376 goto save;
377 }
378 if (eq(wd, "xnu-library")) {
379 f_flags |= LIBRARYDEP;
380 goto nextopt;
381 }
382 if (eq(wd, "bound-checks")) {
383 f_flags |= BOUND_CHECKS;
384 goto nextopt;
385 }
386 nreqs++;
387 if (needs == 0 && nreqs == 1) {
388 needs = ns(wd);
389 }
390 if (isdup) {
391 goto invis;
392 }
393 if (options) {
394 struct opt *lop = 0;
395 struct device tdev;
396
397 /*
398 * Allocate a pseudo-device entry which we will insert into
399 * the device list below. The flags field is set non-zero to
400 * indicate an internal entry rather than one generated from
401 * the configuration file. The slave field is set to define
402 * the corresponding symbol as 0 should we fail to find the
403 * option in the option list.
404 */
405 init_dev(&tdev);
406 tdev.d_name = ns(wd);
407 tdev.d_type = PSEUDO_DEVICE;
408 tdev.d_flags++;
409 tdev.d_slave = 0;
410
411 for (op = opt; op; lop = op, op = op->op_next) {
412 char *od = allCaps(ns(wd));
413
414 /*
415 * Found an option which matches the current device
416 * dependency identifier. Set the slave field to
417 * define the option in the header file.
418 */
419 if (strcmp(op->op_name, od) == 0) {
420 tdev.d_slave = 1;
421 if (lop == 0) {
422 opt = op->op_next;
423 } else {
424 lop->op_next = op->op_next;
425 }
426 free(op);
427 op = 0;
428 }
429 free(od);
430 if (op == 0) {
431 break;
432 }
433 }
434 newdev(&tdev);
435 }
436 for (dp = dtab; dp != 0; dp = dp->d_next) {
437 if (eq(dp->d_name, wd) && (dp->d_type != PSEUDO_DEVICE || dp->d_slave)) {
438 if (not_option) {
439 goto invis; /* dont want file if option present */
440 } else {
441 goto nextopt;
442 }
443 }
444 }
445 if (not_option) {
446 goto nextopt; /* want file if option missing */
447 }
448 for (op = opt; op != 0; op = op->op_next) {
449 if (op->op_value == 0 && opteq(op->op_name, wd)) {
450 if (nreqs == 1) {
451 free(needs);
452 needs = 0;
453 }
454 goto nextopt;
455 }
456 }
457
458 invis:
459 while ((wd = get_word(fp)) != 0) {
460 ;
461 }
462 if (tp == 0) {
463 tp = new_fent();
464 }
465 tp->f_fn = this;
466 tp->f_type = INVISIBLE;
467 tp->f_needs = needs;
468 tp->f_flags = isdup;
469 goto next;
470
471 doneopt:
472 if (nreqs == 0) {
473 printf("%s: what is %s optional on?\n",
474 fname, this);
475 exit(1);
476 }
477
478 checkdev:
479 if (wd) {
480 if (*wd == '|') {
481 goto getrest;
482 }
483 next_word(fp, wd);
484 while (wd) {
485 if (eq(wd, "xnu-library")) {
486 f_flags |= LIBRARYDEP;
487 next_word(fp, wd);
488 continue;
489 }
490 if (eq(wd, "bound-checks")) {
491 f_flags |= BOUND_CHECKS;
492 next_word(fp, wd);
493 continue;
494 }
495
496 devorprof = wd;
497 next_word(fp, wd);
498 break;
499 }
500 }
501
502 save:
503 getrest:
504 if (wd) {
505 if (*wd == '|') {
506 rest = ns(get_rest(fp));
507 } else {
508 printf("%s: syntax error describing %s\n",
509 fname, this);
510 exit(1);
511 }
512 }
513 if (eq(devorprof, "profiling-routine") && profiling == 0) {
514 goto next;
515 }
516 if (tp == 0) {
517 tp = new_fent();
518 }
519 tp->f_fn = this;
520 tp->f_extra = rest;
521 if (options) {
522 tp->f_type = INVISIBLE;
523 } else if (eq(devorprof, "device-driver")) {
524 tp->f_type = DRIVER;
525 } else if (eq(devorprof, "profiling-routine")) {
526 tp->f_type = PROFILING;
527 } else {
528 tp->f_type = NORMAL;
529 }
530 tp->f_flags = f_flags;
531 tp->f_needs = needs;
532 if (pf && pf->f_type == INVISIBLE) {
533 pf->f_flags = 1; /* mark as duplicate */
534 }
535 goto next;
536 }
537
538 int
opteq(const char * cp,const char * dp)539 opteq(const char *cp, const char *dp)
540 {
541 char c, d;
542
543 for (;; cp++, dp++) {
544 if (*cp != *dp) {
545 c = isupper(*cp) ? tolower(*cp) : *cp;
546 d = isupper(*dp) ? tolower(*dp) : *dp;
547 if (c != d) {
548 return 0;
549 }
550 }
551 if (*cp == 0) {
552 return 1;
553 }
554 }
555 }
556
557 void
put_source_file_name(FILE * fp,struct file_list * tp)558 put_source_file_name(FILE *fp, struct file_list *tp)
559 {
560 if ((tp->f_fn[0] == '.') && (tp->f_fn[1] == '/')) {
561 fprintf(fp, "%s ", tp->f_fn);
562 } else {
563 fprintf(fp, "$(SOURCE_DIR)/%s ", tp->f_fn);
564 }
565 }
566
567 void
do_objs(FILE * fp,const char * msg,int ext,int flags)568 do_objs(FILE *fp, const char *msg, int ext, int flags)
569 {
570 struct file_list *tp;
571 int lpos, len;
572 char *cp;
573 char och;
574 const char *sp;
575
576 fprintf(fp, "%s", msg);
577 lpos = strlen(msg);
578 for (tp = ftab; tp != 0; tp = tp->f_next) {
579 if (tp->f_type == INVISIBLE) {
580 continue;
581 }
582
583 /*
584 * Check flags (if any)
585 */
586 if (flags && ((tp->f_flags & flags) != flags)) {
587 continue;
588 }
589
590 /*
591 * Check for '.o' file in list
592 */
593 cp = tp->f_fn + (len = strlen(tp->f_fn)) - 1;
594 if (ext != -1 && *cp != ext) {
595 continue;
596 } else if (*cp == 'o') {
597 if (len + lpos > 72) {
598 lpos = 8;
599 fprintf(fp, "\\\n\t");
600 }
601 put_source_file_name(fp, tp);
602 fprintf(fp, " ");
603 lpos += len + 1;
604 continue;
605 }
606 sp = tail(tp->f_fn);
607 cp = (char *)sp + (len = strlen(sp)) - 1;
608 och = *cp;
609 *cp = 'o';
610 if (len + lpos > 72) {
611 lpos = 8;
612 fprintf(fp, "\\\n\t");
613 }
614 fprintf(fp, "%s ", sp);
615 lpos += len + 1;
616 *cp = och;
617 }
618 putc('\n', fp);
619 }
620
621 void
do_files(FILE * fp,const char * msg,char ext)622 do_files(FILE *fp, const char *msg, char ext)
623 {
624 struct file_list *tp;
625 int lpos, len = 0; /* dvw: init to 0 */
626
627 fprintf(fp, "%s", msg);
628 lpos = 8;
629 for (tp = ftab; tp != 0; tp = tp->f_next) {
630 if (tp->f_type == INVISIBLE) {
631 continue;
632 }
633 if (tp->f_fn[strlen(tp->f_fn) - 1] != ext) {
634 continue;
635 }
636 /*
637 * Always generate a newline.
638 * Our Makefile's aren't readable anyway.
639 */
640
641 lpos = 8;
642 fprintf(fp, "\\\n\t");
643 put_source_file_name(fp, tp);
644 lpos += len + 1;
645 }
646 putc('\n', fp);
647 }
648
649 /*
650 * Include machine dependent makefile in output
651 */
652
653 void
do_machdep(FILE * ofp)654 do_machdep(FILE *ofp)
655 {
656 FILE *ifp;
657 char pname[BUFSIZ];
658 char line[BUFSIZ];
659
660 (void) sprintf(line, "%s/Makefile.%s", config_directory, machinename);
661 ifp = fopenp(VPATH, line, pname, "r");
662 if (ifp == 0) {
663 perror(line);
664 exit(1);
665 }
666 while (fgets(line, BUFSIZ, ifp) != 0) {
667 if (profiling && (strncmp(line, "LIBS=", 5) == 0)) {
668 fprintf(ofp, "LIBS=${LIBS_P}\n");
669 } else {
670 fputs(line, ofp);
671 }
672 }
673 fclose(ifp);
674 }
675
676 const char *
tail(const char * fn)677 tail(const char *fn)
678 {
679 const char *cp;
680
681 cp = rindex(fn, '/');
682 if (cp == 0) {
683 return fn;
684 }
685 return cp + 1;
686 }
687
688 /*
689 * Create the makerules for each file
690 * which is part of the system.
691 * Devices are processed with the special c2 option -i
692 * which avoids any problem areas with i/o addressing
693 * (e.g. for the VAX); assembler files are processed by as.
694 */
695 void
do_rules(FILE * f)696 do_rules(FILE *f)
697 {
698 char *cp;
699 char *np, och;
700 const char *tp;
701 struct file_list *ftp;
702 const char *extras = ""; /* dvw: init to "" */
703 char *source_dir;
704 char och_upper;
705 const char *nl = "";
706
707 for (ftp = ftab; ftp != 0; ftp = ftp->f_next) {
708 if (ftp->f_type == INVISIBLE) {
709 continue;
710 }
711 cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
712 och = *cp;
713 /*
714 * Don't compile '.o' files
715 */
716 if (och == 'o') {
717 continue;
718 }
719 /*
720 * Determine where sources should come from
721 */
722 if ((np[0] == '.') && (np[1] == '/')) {
723 source_dir = "";
724 np += 2;
725 } else {
726 source_dir = "$(SOURCE_DIR)/";
727 }
728 *cp = '\0';
729 tp = tail(np); /* dvw: init tp before 'if' */
730 fprintf(f, "-include %sd\n", tp);
731 if (ftp->f_flags & BOUND_CHECKS) {
732 fprintf(f, "%so_CFLAGS_ADD += ${CFLAGS_BOUND_CHECKS}\n", tp);
733 }
734 fprintf(f, "%so: %s%s%c\n", tp, source_dir, np, och);
735 if (och == 's') {
736 fprintf(f, "\t${S_RULE_0}\n");
737 fprintf(f, "\t${S_RULE_1A} %s%.*s${S_RULE_1B}%s\n",
738 source_dir, (int)(tp - np), np, nl);
739 fprintf(f, "\t${S_RULE_2}%s\n", nl);
740 continue;
741 }
742 extras = "";
743 switch (ftp->f_type) {
744 case NORMAL:
745 goto common;
746 break;
747
748 case DRIVER:
749 extras = "_D";
750 goto common;
751 break;
752
753 case PROFILING:
754 if (!profiling) {
755 continue;
756 }
757 if (COPTS == 0) {
758 fprintf(stderr,
759 "config: COPTS undefined in generic makefile");
760 COPTS = "";
761 }
762 extras = "_P";
763 goto common;
764
765 common:
766 och_upper = och + 'A' - 'a';
767 fprintf(f, "\t${%c_RULE_0%s}\n", och_upper, extras);
768 fprintf(f, "\t${%c_RULE_1A%s}", och_upper, extras);
769 if (ftp->f_extra) {
770 fprintf(f, "%s", ftp->f_extra);
771 }
772 fprintf(f, " %s%.*s${%c_RULE_1B%s}%s\n",
773 source_dir, (int)(tp - np), np, och_upper, extras, nl);
774
775 fprintf(f, "\t${%c_RULE_2%s}%s\n", och_upper, extras, nl);
776 fprintf(f, "\t${%c_RULE_3%s}%s\n", och_upper, extras, nl);
777 fprintf(f, "\t$(if ${%c_RULE_4A%s},${%c_RULE_4A%s}",
778 och_upper, extras, och_upper, extras);
779 if (ftp->f_extra) {
780 fprintf(f, "%s", ftp->f_extra);
781 }
782 fprintf(f, "%s%.*s${%c_RULE_4B%s}%s)\n",
783 source_dir, (int)(tp - np), np, och_upper, extras, nl);
784 break;
785
786 default:
787 printf("Don't know rules for %s\n", np);
788 break;
789 }
790 *cp = och;
791 }
792 }
793
794 char *
allCaps(char * str)795 allCaps(char *str)
796 {
797 char *cp = str;
798
799 while (*str) {
800 if (islower(*str)) {
801 *str = toupper(*str);
802 }
803 str++;
804 }
805 return cp;
806 }
807
808 #define OLDSALUTATION "# DO NOT DELETE THIS LINE"
809
810 #define LINESIZE 1024
811 static char makbuf[LINESIZE]; /* one line buffer for makefile */
812
813 void
copy_dependencies(FILE * makin,FILE * makout)814 copy_dependencies(FILE *makin, FILE *makout)
815 {
816 int oldlen = (sizeof OLDSALUTATION - 1);
817
818 while (fgets(makbuf, LINESIZE, makin) != NULL) {
819 if (!strncmp(makbuf, OLDSALUTATION, oldlen)) {
820 break;
821 }
822 }
823 while (fgets(makbuf, LINESIZE, makin) != NULL) {
824 if (oldlen != 0) {
825 if (makbuf[0] == '\n') {
826 continue;
827 } else {
828 oldlen = 0;
829 }
830 }
831 fputs(makbuf, makout);
832 }
833 }
834