xref: /freebsd/usr.sbin/config/mkmakefile.cc (revision b3e7694832e81d7a904a10f525f8797b753bf0d3)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1980, 1990, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #ifndef lint
33 #if 0
34 static char sccsid[] = "@(#)mkmakefile.c	8.1 (Berkeley) 6/6/93";
35 #endif
36 static const char rcsid[] =
37   "$FreeBSD$";
38 #endif /* not lint */
39 
40 /*
41  * Build the makefile for the system, from
42  * the information in the files files and the
43  * additional files for the machine being compiled to.
44  */
45 #include <sys/param.h>
46 
47 #include <cerrno>
48 #include <ctype.h>
49 #include <err.h>
50 #include <stdarg.h>
51 #include <stdbool.h>
52 #include <stdio.h>
53 #include <string.h>
54 #include <string>
55 #include <unordered_map>
56 
57 #include "y.tab.h"
58 #include "config.h"
59 #include "configvers.h"
60 
61 typedef std::unordered_map<std::string, std::string>	env_map;
62 
63 static char *tail(char *);
64 static void do_clean(FILE *);
65 static void do_rules(FILE *);
66 static void do_xxfiles(char *, FILE *);
67 static void do_objs(FILE *);
68 static void do_before_depend(FILE *);
69 static void read_files(void);
70 static void sanitize_envline(char *result, const char *src);
71 static bool preprocess(char *line, char *result);
72 static void process_into_file(char *line, FILE *ofp);
73 static int process_into_map(char *line, env_map &emap);
74 static void dump_map(env_map &emap, FILE *ofp);
75 
76 static void __printflike(1, 2)
77 errout(const char *fmt, ...)
78 {
79 	va_list ap;
80 
81 	va_start(ap, fmt);
82 	vfprintf(stderr, fmt, ap);
83 	va_end(ap);
84 	exit(1);
85 }
86 
87 /*
88  * Lookup a file, by name.
89  */
90 static struct file_list *
91 fl_lookup(char *file)
92 {
93 	struct file_list *fp;
94 
95 	STAILQ_FOREACH(fp, &ftab, f_next) {
96 		if (eq(fp->f_fn, file))
97 			return (fp);
98 	}
99 	return (0);
100 }
101 
102 /*
103  * Make a new file list entry
104  */
105 static struct file_list *
106 new_fent(void)
107 {
108 	struct file_list *fp;
109 
110 	fp = (struct file_list *) calloc(1, sizeof *fp);
111 	if (fp == NULL)
112 		err(EXIT_FAILURE, "calloc");
113 	STAILQ_INSERT_TAIL(&ftab, fp, f_next);
114 	return (fp);
115 }
116 
117 /*
118  * Open the correct Makefile and return it, or error out.
119  */
120 FILE *
121 open_makefile_template(void)
122 {
123 	FILE *ifp;
124 	char line[BUFSIZ];
125 
126 	snprintf(line, sizeof(line), "../../conf/Makefile.%s", machinename);
127 	ifp = fopen(line, "r");
128 	if (ifp == NULL) {
129 		snprintf(line, sizeof(line), "Makefile.%s", machinename);
130 		ifp = fopen(line, "r");
131 	}
132 	if (ifp == NULL)
133 		err(1, "%s", line);
134 	return (ifp);
135 }
136 
137 /*
138  * Build the makefile from the skeleton
139  */
140 void
141 makefile(void)
142 {
143 	FILE *ifp, *ofp;
144 	char line[BUFSIZ];
145 	struct opt *op, *t;
146 
147 	read_files();
148 	ifp = open_makefile_template();
149 	ofp = fopen(path("Makefile.new"), "w");
150 	if (ofp == NULL)
151 		err(1, "%s", path("Makefile.new"));
152 	fprintf(ofp, "KERN_IDENT=%s\n", ident);
153 	fprintf(ofp, "MACHINE=%s\n", machinename);
154 	fprintf(ofp, "MACHINE_ARCH=%s\n", machinearch);
155 	SLIST_FOREACH_SAFE(op, &mkopt, op_next, t) {
156 		fprintf(ofp, "%s=%s", op->op_name, op->op_value);
157 		while ((op = SLIST_NEXT(op, op_append)) != NULL)
158 			fprintf(ofp, " %s", op->op_value);
159 		fprintf(ofp, "\n");
160 	}
161 	if (debugging)
162 		fprintf(ofp, "DEBUG=-g\n");
163 	if (*srcdir != '\0')
164 		fprintf(ofp,"S=%s\n", srcdir);
165 	while (fgets(line, BUFSIZ, ifp) != NULL) {
166 		if (*line != '%') {
167 			fprintf(ofp, "%s", line);
168 			continue;
169 		}
170 		if (eq(line, "%BEFORE_DEPEND\n"))
171 			do_before_depend(ofp);
172 		else if (eq(line, "%OBJS\n"))
173 			do_objs(ofp);
174 		else if (strncmp(line, "%FILES.", 7) == 0)
175 			do_xxfiles(line, ofp);
176 		else if (eq(line, "%RULES\n"))
177 			do_rules(ofp);
178 		else if (eq(line, "%CLEAN\n"))
179 			do_clean(ofp);
180 		else if (strncmp(line, "%VERSREQ=", 9) == 0)
181 			line[0] = '\0'; /* handled elsewhere */
182 		else
183 			fprintf(stderr,
184 			    "Unknown %% construct in generic makefile: %s",
185 			    line);
186 	}
187 	(void) fclose(ifp);
188 	(void) fclose(ofp);
189 	moveifchanged("Makefile.new", "Makefile");
190 }
191 
192 static void
193 sanitize_envline(char *result, const char *src)
194 {
195 	const char *eq;
196 	char c, *dst;
197 	bool leading;
198 
199 	/* If there is no '=' it's not a well-formed name=value line. */
200 	if ((eq = strchr(src, '=')) == NULL) {
201 		*result = '\0';
202 		return;
203 	}
204 	dst = result;
205 
206 	/* Copy chars before the '=', skipping any leading spaces/quotes. */
207 	leading = true;
208 	while (src < eq) {
209 		c = *src++;
210 		if (leading && (isspace(c) || c == '"'))
211 			continue;
212 		*dst++ = c;
213 		leading = false;
214 	}
215 
216 	/* If it was all leading space, we don't have a well-formed line. */
217 	if (leading) {
218 		*result = '\0';
219 		return;
220 	}
221 
222 	/* Trim spaces/quotes immediately before the '=', then copy the '='. */
223 	while (isspace(dst[-1]) || dst[-1] == '"')
224 		--dst;
225 	*dst++ = *src++;
226 
227 	/* Copy chars after the '=', skipping any leading whitespace. */
228 	leading = true;
229 	while ((c = *src++) != '\0') {
230 		if (leading && (isspace(c) || c == '"'))
231 			continue;
232 		*dst++ = c;
233 		leading = false;
234 	}
235 
236 	/* If it was all leading space, it's a valid 'var=' (nil value). */
237 	if (leading) {
238 		*dst = '\0';
239 		return;
240 	}
241 
242 	/* Trim trailing whitespace and quotes. */
243 	while (isspace(dst[-1]) || dst[-1] == '"')
244 		--dst;
245 
246 	*dst = '\0';
247 }
248 
249 /*
250  * Returns true if the caller may use the string.
251  */
252 static bool
253 preprocess(char *line, char *result)
254 {
255 	char *s;
256 
257 	/* Strip any comments */
258 	if ((s = strchr(line, '#')) != NULL)
259 		*s = '\0';
260 	sanitize_envline(result, line);
261 	/* Return true if it's non-empty */
262 	return (*result != '\0');
263 }
264 
265 static void
266 process_into_file(char *line, FILE *ofp)
267 {
268 	char result[BUFSIZ];
269 
270 	if (preprocess(line, result))
271 		fprintf(ofp, "\"%s\\0\"\n", result);
272 }
273 
274 static int
275 process_into_map(char *line, env_map &emap)
276 {
277 	char result[BUFSIZ], *s;
278 
279 	if (preprocess(line, result)) {
280 		s = strchr(result, '=');
281 		if (s == NULL)
282 			return (EINVAL);
283 		*s = '\0';
284 		emap[result] = s + 1;
285 	}
286 
287 	return (0);
288 }
289 
290 static void
291 dump_map(env_map &emap, FILE *ofp)
292 {
293 
294 	for (auto iter : emap) {
295 		fprintf(ofp, "\"%s=%s\\0\"\n", iter.first.c_str(),
296 		    iter.second.c_str());
297 	}
298 }
299 
300 /*
301  * Build hints.c from the skeleton
302  */
303 void
304 makehints(void)
305 {
306 	FILE *ifp, *ofp;
307 	env_map emap;
308 	char line[BUFSIZ];
309 	struct hint *hint;
310 
311 	ofp = fopen(path("hints.c.new"), "w");
312 	if (ofp == NULL)
313 		err(1, "%s", path("hints.c.new"));
314 	fprintf(ofp, "#include <sys/types.h>\n");
315 	fprintf(ofp, "#include <sys/systm.h>\n");
316 	fprintf(ofp, "\n");
317 	/*
318 	 * Write out hintmode for older kernels. Remove when config(8) major
319 	 * version rolls over.
320 	 */
321 	if (versreq <= CONFIGVERS_ENVMODE_REQ)
322 		fprintf(ofp, "int hintmode = %d;\n",
323 			!STAILQ_EMPTY(&hints) ? 1 : 0);
324 	fprintf(ofp, "char static_hints[] = {\n");
325 	STAILQ_FOREACH(hint, &hints, hint_next) {
326 		ifp = fopen(hint->hint_name, "r");
327 		if (ifp == NULL)
328 			err(1, "%s", hint->hint_name);
329 		while (fgets(line, BUFSIZ, ifp) != NULL) {
330 			if (process_into_map(line, emap) != 0)
331 				errout("%s: malformed line: %s\n",
332 				    hint->hint_name, line);
333 		}
334 		dump_map(emap, ofp);
335 		fclose(ifp);
336 	}
337 	fprintf(ofp, "\"\\0\"\n};\n");
338 	fclose(ofp);
339 	moveifchanged("hints.c.new", "hints.c");
340 }
341 
342 /*
343  * Build env.c from the skeleton
344  */
345 void
346 makeenv(void)
347 {
348 	FILE *ifp, *ofp;
349 	env_map emap;
350 	char line[BUFSIZ];
351 	struct envvar *envvar;
352 
353 	ofp = fopen(path("env.c.new"), "w");
354 	if (ofp == NULL)
355 		err(1, "%s", path("env.c.new"));
356 	fprintf(ofp, "#include <sys/types.h>\n");
357 	fprintf(ofp, "#include <sys/systm.h>\n");
358 	fprintf(ofp, "\n");
359 	/*
360 	 * Write out envmode for older kernels. Remove when config(8) major
361 	 * version rolls over.
362 	 */
363 	if (versreq <= CONFIGVERS_ENVMODE_REQ)
364 		fprintf(ofp, "int envmode = %d;\n",
365 			!STAILQ_EMPTY(&envvars) ? 1 : 0);
366 	fprintf(ofp, "char static_env[] = {\n");
367 	STAILQ_FOREACH(envvar, &envvars, envvar_next) {
368 		if (envvar->env_is_file) {
369 			ifp = fopen(envvar->env_str, "r");
370 			if (ifp == NULL)
371 				err(1, "%s", envvar->env_str);
372 			while (fgets(line, BUFSIZ, ifp) != NULL) {
373 				if (process_into_map(line, emap) != 0)
374 					errout("%s: malformed line: %s\n",
375 					    envvar->env_str, line);
376 			}
377 			dump_map(emap, ofp);
378 			fclose(ifp);
379 		} else
380 			process_into_file(envvar->env_str, ofp);
381 	}
382 	fprintf(ofp, "\"\\0\"\n};\n");
383 	fclose(ofp);
384 	moveifchanged("env.c.new", "env.c");
385 }
386 
387 static void
388 read_file(char *fname)
389 {
390 	char ifname[MAXPATHLEN];
391 	FILE *fp;
392 	struct file_list *tp;
393 	struct device *dp;
394 	struct opt *op;
395 	configword wd;
396 	char *rfile, *compilewith, *depends, *clean, *warning;
397 	const char *objprefix;
398 	int compile, match, nreqs, std, filetype, negate,
399 	    imp_rule, no_ctfconvert, no_obj, before_depend, nowerror;
400 
401 	fp = fopen(fname, "r");
402 	if (fp == NULL)
403 		err(1, "%s", fname);
404 next:
405 	/*
406 	 * include "filename"
407 	 * filename    [ standard | optional ]
408 	 *	[ dev* [ | dev* ... ] | [ no-obj ]
409 	 *	[ compile-with "compile rule" [no-implicit-rule] ]
410 	 *      [ dependency "dependency-list"] [ before-depend ]
411 	 *	[ clean "file-list"] [ warning "text warning" ]
412 	 *	[ obj-prefix "file prefix"]
413 	 *	[ nowerror ] [ local ]
414 	 */
415 	wd = get_word(fp);
416 	if (wd.eof()) {
417 		(void) fclose(fp);
418 		return;
419 	}
420 	if (wd.eol())
421 		goto next;
422 	if (wd[0] == '#')
423 	{
424 		while (!(wd = get_word(fp)).eof() && !wd.eol())
425 			;
426 		goto next;
427 	}
428 	if (eq(wd, "include")) {
429 		wd = get_quoted_word(fp);
430 		if (wd.eof() || wd.eol())
431 			errout("%s: missing include filename.\n", fname);
432 		(void) snprintf(ifname, sizeof(ifname), "../../%s",
433 		    wd->c_str());
434 		read_file(ifname);
435 		while (!(wd = get_word(fp)).eof() && !wd.eol())
436 			;
437 		goto next;
438 	}
439 	rfile = ns(wd);
440 	wd = get_word(fp);
441 	if (wd.eof())
442 		return;
443 	if (wd.eol())
444 		errout("%s: No type for %s.\n", fname, rfile);
445 	tp = fl_lookup(rfile);
446 	compile = 0;
447 	match = 1;
448 	nreqs = 0;
449 	compilewith = NULL;
450 	depends = NULL;
451 	clean = NULL;
452 	warning = NULL;
453 	std = 0;
454 	imp_rule = 0;
455 	no_ctfconvert = 0;
456 	no_obj = 0;
457 	before_depend = 0;
458 	nowerror = 0;
459 	negate = 0;
460 	filetype = NORMAL;
461 	objprefix = "";
462 	if (eq(wd, "standard"))
463 		std = 1;
464 	else if (!eq(wd, "optional"))
465 		errout("%s: \"%s\" %s must be optional or standard\n",
466 		    fname, wd->c_str(), rfile);
467 	for (wd = get_word(fp); !wd.eol(); wd = get_word(fp)) {
468 		if (wd.eof())
469 			return;
470 		if (eq(wd, "!")) {
471 			negate = 1;
472 			continue;
473 		}
474 		if (eq(wd, "|")) {
475 			if (nreqs == 0)
476 				errout("%s: syntax error describing %s\n",
477 				       fname, rfile);
478 			compile += match;
479 			match = 1;
480 			nreqs = 0;
481 			continue;
482 		}
483 		if (eq(wd, "no-ctfconvert")) {
484 			no_ctfconvert++;
485 			continue;
486 		}
487 		if (eq(wd, "no-obj")) {
488 			no_obj++;
489 			continue;
490 		}
491 		if (eq(wd, "no-implicit-rule")) {
492 			if (compilewith == NULL)
493 				errout("%s: alternate rule required when "
494 				       "\"no-implicit-rule\" is specified for"
495 				       " %s.\n",
496 				       fname, rfile);
497 			imp_rule++;
498 			continue;
499 		}
500 		if (eq(wd, "before-depend")) {
501 			before_depend++;
502 			continue;
503 		}
504 		if (eq(wd, "dependency")) {
505 			wd = get_quoted_word(fp);
506 			if (wd.eof() || wd.eol())
507 				errout("%s: %s missing dependency string.\n",
508 				       fname, rfile);
509 			depends = ns(wd);
510 			continue;
511 		}
512 		if (eq(wd, "clean")) {
513 			wd = get_quoted_word(fp);
514 			if (wd.eof() || wd.eol())
515 				errout("%s: %s missing clean file list.\n",
516 				       fname, rfile);
517 			clean = ns(wd);
518 			continue;
519 		}
520 		if (eq(wd, "compile-with")) {
521 			wd = get_quoted_word(fp);
522 			if (wd.eof() || wd.eol())
523 				errout("%s: %s missing compile command string.\n",
524 				       fname, rfile);
525 			compilewith = ns(wd);
526 			continue;
527 		}
528 		if (eq(wd, "warning")) {
529 			wd = get_quoted_word(fp);
530 			if (wd.eof() || wd.eol())
531 				errout("%s: %s missing warning text string.\n",
532 				       fname, rfile);
533 			warning = ns(wd);
534 			continue;
535 		}
536 		if (eq(wd, "obj-prefix")) {
537 			wd = get_quoted_word(fp);
538 			if (wd.eof() || wd.eol())
539 				errout("%s: %s missing object prefix string.\n",
540 				       fname, rfile);
541 			objprefix = ns(wd);
542 			continue;
543 		}
544 		if (eq(wd, "nowerror")) {
545 			nowerror = 1;
546 			continue;
547 		}
548 		if (eq(wd, "local")) {
549 			filetype = LOCAL;
550 			continue;
551 		}
552 		if (eq(wd, "no-depend")) {
553 			filetype = NODEPEND;
554 			continue;
555 		}
556 		nreqs++;
557 		if (std)
558 			errout("standard entry %s has optional inclusion specifier %s!\n",
559 			       rfile, wd->c_str());
560 		STAILQ_FOREACH(dp, &dtab, d_next)
561 			if (eq(dp->d_name, wd)) {
562 				if (negate)
563 					match = 0;
564 				else
565 					dp->d_done |= DEVDONE;
566 				goto nextparam;
567 			}
568 		SLIST_FOREACH(op, &opt, op_next)
569 			if (op->op_value == 0 &&
570 			    strcasecmp(op->op_name, wd) == 0) {
571 				if (negate)
572 					match = 0;
573 				goto nextparam;
574 			}
575 		match &= negate;
576 nextparam:;
577 		negate = 0;
578 	}
579 	compile += match;
580 	if (compile && tp == NULL) {
581 		if (std == 0 && nreqs == 0)
582 			errout("%s: what is %s optional on?\n",
583 			       fname, rfile);
584 		tp = new_fent();
585 		tp->f_fn = rfile;
586 		tp->f_type = filetype;
587 		if (filetype == LOCAL)
588 			tp->f_srcprefix = "";
589 		else
590 			tp->f_srcprefix = "$S/";
591 		if (imp_rule)
592 			tp->f_flags |= NO_IMPLCT_RULE;
593 		if (no_ctfconvert)
594 			tp->f_flags |= NO_CTFCONVERT;
595 		if (no_obj)
596 			tp->f_flags |= NO_OBJ | NO_CTFCONVERT;
597 		if (before_depend)
598 			tp->f_flags |= BEFORE_DEPEND;
599 		if (nowerror)
600 			tp->f_flags |= NOWERROR;
601 		tp->f_compilewith = compilewith;
602 		tp->f_depends = depends;
603 		tp->f_clean = clean;
604 		tp->f_warn = warning;
605 		tp->f_objprefix = objprefix;
606 	}
607 	goto next;
608 }
609 
610 /*
611  * Read in the information about files used in making the system.
612  * Store it in the ftab linked list.
613  */
614 static void
615 read_files(void)
616 {
617 	char fname[MAXPATHLEN];
618 	struct files_name *nl, *tnl;
619 
620 	(void) snprintf(fname, sizeof(fname), "../../conf/files");
621 	read_file(fname);
622 	(void) snprintf(fname, sizeof(fname),
623 		       	"../../conf/files.%s", machinename);
624 	read_file(fname);
625 	for (nl = STAILQ_FIRST(&fntab); nl != NULL; nl = tnl) {
626 		read_file(nl->f_name);
627 		tnl = STAILQ_NEXT(nl, f_next);
628 		free(nl->f_name);
629 		free(nl);
630 	}
631 }
632 
633 static void
634 do_before_depend(FILE *fp)
635 {
636 	struct file_list *tp;
637 	int lpos, len;
638 
639 	fputs("BEFORE_DEPEND=", fp);
640 	lpos = 15;
641 	STAILQ_FOREACH(tp, &ftab, f_next)
642 		if (tp->f_flags & BEFORE_DEPEND) {
643 			len = strlen(tp->f_fn) + strlen(tp->f_srcprefix);
644 			if (len + lpos > 72) {
645 				lpos = 8;
646 				fputs("\\\n\t", fp);
647 			}
648 			if (tp->f_flags & NO_IMPLCT_RULE)
649 				lpos += fprintf(fp, "%s ", tp->f_fn);
650 			else
651 				lpos += fprintf(fp, "%s%s ", tp->f_srcprefix,
652 				    tp->f_fn);
653 		}
654 	if (lpos != 8)
655 		putc('\n', fp);
656 }
657 
658 static void
659 do_objs(FILE *fp)
660 {
661 	struct file_list *tp;
662 	int lpos, len;
663 	char *cp, och, *sp;
664 
665 	fprintf(fp, "OBJS=");
666 	lpos = 6;
667 	STAILQ_FOREACH(tp, &ftab, f_next) {
668 		if (tp->f_flags & NO_OBJ)
669 			continue;
670 		sp = tail(tp->f_fn);
671 		cp = sp + (len = strlen(sp)) - 1;
672 		och = *cp;
673 		*cp = 'o';
674 		len += strlen(tp->f_objprefix);
675 		if (len + lpos > 72) {
676 			lpos = 8;
677 			fprintf(fp, "\\\n\t");
678 		}
679 		fprintf(fp, "%s%s ", tp->f_objprefix, sp);
680 		lpos += len + 1;
681 		*cp = och;
682 	}
683 	if (lpos != 8)
684 		putc('\n', fp);
685 }
686 
687 static void
688 do_xxfiles(char *tag, FILE *fp)
689 {
690 	struct file_list *tp;
691 	int lpos, len, slen;
692 	char *suff, *SUFF;
693 
694 	if (tag[strlen(tag) - 1] == '\n')
695 		tag[strlen(tag) - 1] = '\0';
696 
697 	suff = ns(tag + 7);
698 	SUFF = ns(suff);
699 	raisestr(SUFF);
700 	slen = strlen(suff);
701 
702 	fprintf(fp, "%sFILES=", SUFF);
703 	free(SUFF);
704 	lpos = 8;
705 	STAILQ_FOREACH(tp, &ftab, f_next)
706 		if (tp->f_type != NODEPEND) {
707 			len = strlen(tp->f_fn);
708 			if (tp->f_fn[len - slen - 1] != '.')
709 				continue;
710 			if (strcasecmp(&tp->f_fn[len - slen], suff) != 0)
711 				continue;
712 			if (len + strlen(tp->f_srcprefix) + lpos > 72) {
713 				lpos = 8;
714 				fputs("\\\n\t", fp);
715 			}
716 			lpos += fprintf(fp, "%s%s ", tp->f_srcprefix, tp->f_fn);
717 		}
718 	free(suff);
719 	if (lpos != 8)
720 		putc('\n', fp);
721 }
722 
723 static char *
724 tail(char *fn)
725 {
726 	char *cp;
727 
728 	cp = strrchr(fn, '/');
729 	if (cp == NULL)
730 		return (fn);
731 	return (cp+1);
732 }
733 
734 /*
735  * Create the makerules for each file
736  * which is part of the system.
737  */
738 static void
739 do_rules(FILE *f)
740 {
741 	char *cp, *np, och;
742 	struct file_list *ftp;
743 	char *compilewith;
744 	char cmd[128];
745 
746 	STAILQ_FOREACH(ftp, &ftab, f_next) {
747 		if (ftp->f_warn)
748 			fprintf(stderr, "WARNING: %s\n", ftp->f_warn);
749 		cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
750 		och = *cp;
751 		if (ftp->f_flags & NO_IMPLCT_RULE) {
752 			if (ftp->f_depends)
753 				fprintf(f, "%s%s: %s\n",
754 					ftp->f_objprefix, np, ftp->f_depends);
755 			else
756 				fprintf(f, "%s%s: \n", ftp->f_objprefix, np);
757 		}
758 		else {
759 			*cp = '\0';
760 			if (och == 'o') {
761 				fprintf(f, "%s%so:\n\t-cp %s%so .\n\n",
762 					ftp->f_objprefix, tail(np),
763 					ftp->f_srcprefix, np);
764 				continue;
765 			}
766 			if (ftp->f_depends) {
767 				fprintf(f, "%s%so: %s%s%c %s\n",
768 					ftp->f_objprefix, tail(np),
769 					ftp->f_srcprefix, np, och,
770 					ftp->f_depends);
771 			}
772 			else {
773 				fprintf(f, "%s%so: %s%s%c\n",
774 					ftp->f_objprefix, tail(np),
775 					ftp->f_srcprefix, np, och);
776 			}
777 		}
778 		compilewith = ftp->f_compilewith;
779 		if (compilewith == NULL) {
780 			const char *ftype = NULL;
781 
782 			switch (ftp->f_type) {
783 			case NORMAL:
784 				ftype = "NORMAL";
785 				break;
786 			default:
787 				fprintf(stderr,
788 				    "config: don't know rules for %s\n", np);
789 				break;
790 			}
791 			snprintf(cmd, sizeof(cmd),
792 			    "${%s_%c%s}", ftype,
793 			    toupper(och),
794 			    ftp->f_flags & NOWERROR ? "_NOWERROR" : "");
795 			compilewith = cmd;
796 		}
797 		*cp = och;
798 		if (strlen(ftp->f_objprefix))
799 			fprintf(f, "\t%s %s%s\n", compilewith,
800 			    ftp->f_srcprefix, np);
801 		else
802 			fprintf(f, "\t%s\n", compilewith);
803 
804 		if (!(ftp->f_flags & NO_CTFCONVERT))
805 			fprintf(f, "\t${NORMAL_CTFCONVERT}\n\n");
806 		else
807 			fprintf(f, "\n");
808 	}
809 }
810 
811 static void
812 do_clean(FILE *fp)
813 {
814 	struct file_list *tp;
815 	int lpos, len;
816 
817 	fputs("CLEAN=", fp);
818 	lpos = 7;
819 	STAILQ_FOREACH(tp, &ftab, f_next)
820 		if (tp->f_clean) {
821 			len = strlen(tp->f_clean);
822 			if (len + lpos > 72) {
823 				lpos = 8;
824 				fputs("\\\n\t", fp);
825 			}
826 			fprintf(fp, "%s ", tp->f_clean);
827 			lpos += len + 1;
828 		}
829 	if (lpos != 8)
830 		putc('\n', fp);
831 }
832 
833 char *
834 raisestr(char *str)
835 {
836 	char *cp = str;
837 
838 	while (*str) {
839 		if (islower(*str))
840 			*str = toupper(*str);
841 		str++;
842 	}
843 	return (cp);
844 }
845