xref: /freebsd/usr.sbin/config/mkmakefile.cc (revision dabf006a638fdc44cdcf69731de8ac83959db731)
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 /*
33  * Build the makefile for the system, from
34  * the information in the files files and the
35  * additional files for the machine being compiled to.
36  */
37 #include <sys/param.h>
38 
39 #include <cerrno>
40 #include <ctype.h>
41 #include <err.h>
42 #include <stdarg.h>
43 #include <stdbool.h>
44 #include <stdio.h>
45 #include <string.h>
46 #include <string>
47 #include <unordered_map>
48 
49 #include "y.tab.h"
50 #include "config.h"
51 #include "configvers.h"
52 
53 typedef std::unordered_map<std::string, std::string>	env_map;
54 
55 static char *tail(char *);
56 static void do_clean(FILE *);
57 static void do_rules(FILE *);
58 static void do_xxfiles(char *, FILE *);
59 static void do_objs(FILE *);
60 static void do_before_depend(FILE *);
61 static void read_files(void);
62 static void sanitize_envline(char *result, const char *src);
63 static bool preprocess(char *line, char *result);
64 static void process_into_file(char *line, FILE *ofp);
65 static int process_into_map(char *line, env_map &emap);
66 static void dump_map(env_map &emap, FILE *ofp);
67 
68 static void __printflike(1, 2)
69 errout(const char *fmt, ...)
70 {
71 	va_list ap;
72 
73 	va_start(ap, fmt);
74 	vfprintf(stderr, fmt, ap);
75 	va_end(ap);
76 	exit(1);
77 }
78 
79 /*
80  * Lookup a file, by name.
81  */
82 static struct file_list *
83 fl_lookup(char *file)
84 {
85 	struct file_list *fp;
86 
87 	STAILQ_FOREACH(fp, &ftab, f_next) {
88 		if (eq(fp->f_fn, file))
89 			return (fp);
90 	}
91 	return (0);
92 }
93 
94 /*
95  * Make a new file list entry
96  */
97 static struct file_list *
98 new_fent(void)
99 {
100 	struct file_list *fp;
101 
102 	fp = (struct file_list *) calloc(1, sizeof *fp);
103 	if (fp == NULL)
104 		err(EXIT_FAILURE, "calloc");
105 	STAILQ_INSERT_TAIL(&ftab, fp, f_next);
106 	return (fp);
107 }
108 
109 /*
110  * Open the correct Makefile and return it, or error out.
111  */
112 FILE *
113 open_makefile_template(void)
114 {
115 	FILE *ifp;
116 	char line[BUFSIZ];
117 
118 	snprintf(line, sizeof(line), "../../conf/Makefile.%s", machinename);
119 	ifp = fopen(line, "r");
120 	if (ifp == NULL) {
121 		snprintf(line, sizeof(line), "Makefile.%s", machinename);
122 		ifp = fopen(line, "r");
123 	}
124 	if (ifp == NULL)
125 		err(1, "%s", line);
126 	return (ifp);
127 }
128 
129 /*
130  * Build the makefile from the skeleton
131  */
132 void
133 makefile(void)
134 {
135 	FILE *ifp, *ofp;
136 	char line[BUFSIZ];
137 	struct opt *op, *t;
138 
139 	read_files();
140 	ifp = open_makefile_template();
141 	ofp = fopen(path("Makefile.new"), "w");
142 	if (ofp == NULL)
143 		err(1, "%s", path("Makefile.new"));
144 	fprintf(ofp, "KERN_IDENT=%s\n", ident);
145 	fprintf(ofp, "MACHINE=%s\n", machinename);
146 	fprintf(ofp, "MACHINE_ARCH=%s\n", machinearch);
147 	SLIST_FOREACH_SAFE(op, &mkopt, op_next, t) {
148 		fprintf(ofp, "%s=%s", op->op_name, op->op_value);
149 		while ((op = SLIST_NEXT(op, op_append)) != NULL)
150 			fprintf(ofp, " %s", op->op_value);
151 		fprintf(ofp, "\n");
152 	}
153 	if (debugging)
154 		fprintf(ofp, "DEBUG=-g\n");
155 	if (*srcdir != '\0')
156 		fprintf(ofp,"S=%s\n", srcdir);
157 	while (fgets(line, BUFSIZ, ifp) != NULL) {
158 		if (*line != '%') {
159 			fprintf(ofp, "%s", line);
160 			continue;
161 		}
162 		if (eq(line, "%BEFORE_DEPEND\n"))
163 			do_before_depend(ofp);
164 		else if (eq(line, "%OBJS\n"))
165 			do_objs(ofp);
166 		else if (strncmp(line, "%FILES.", 7) == 0)
167 			do_xxfiles(line, ofp);
168 		else if (eq(line, "%RULES\n"))
169 			do_rules(ofp);
170 		else if (eq(line, "%CLEAN\n"))
171 			do_clean(ofp);
172 		else if (strncmp(line, "%VERSREQ=", 9) == 0)
173 			line[0] = '\0'; /* handled elsewhere */
174 		else
175 			fprintf(stderr,
176 			    "Unknown %% construct in generic makefile: %s",
177 			    line);
178 	}
179 	(void) fclose(ifp);
180 	(void) fclose(ofp);
181 	moveifchanged("Makefile.new", "Makefile");
182 }
183 
184 static void
185 sanitize_envline(char *result, const char *src)
186 {
187 	const char *eq;
188 	char c, *dst;
189 	bool leading;
190 
191 	/* If there is no '=' it's not a well-formed name=value line. */
192 	if ((eq = strchr(src, '=')) == NULL) {
193 		*result = '\0';
194 		return;
195 	}
196 	dst = result;
197 
198 	/* Copy chars before the '=', skipping any leading spaces/quotes. */
199 	leading = true;
200 	while (src < eq) {
201 		c = *src++;
202 		if (leading && (isspace(c) || c == '"'))
203 			continue;
204 		*dst++ = c;
205 		leading = false;
206 	}
207 
208 	/* If it was all leading space, we don't have a well-formed line. */
209 	if (leading) {
210 		*result = '\0';
211 		return;
212 	}
213 
214 	/* Trim spaces/quotes immediately before the '=', then copy the '='. */
215 	while (isspace(dst[-1]) || dst[-1] == '"')
216 		--dst;
217 	*dst++ = *src++;
218 
219 	/* Copy chars after the '=', skipping any leading whitespace. */
220 	leading = true;
221 	while ((c = *src++) != '\0') {
222 		if (leading && (isspace(c) || c == '"'))
223 			continue;
224 		*dst++ = c;
225 		leading = false;
226 	}
227 
228 	/* If it was all leading space, it's a valid 'var=' (nil value). */
229 	if (leading) {
230 		*dst = '\0';
231 		return;
232 	}
233 
234 	/* Trim trailing whitespace and quotes. */
235 	while (isspace(dst[-1]) || dst[-1] == '"')
236 		--dst;
237 
238 	*dst = '\0';
239 }
240 
241 /*
242  * Returns true if the caller may use the string.
243  */
244 static bool
245 preprocess(char *line, char *result)
246 {
247 	char *s;
248 
249 	/* Strip any comments */
250 	if ((s = strchr(line, '#')) != NULL)
251 		*s = '\0';
252 	sanitize_envline(result, line);
253 	/* Return true if it's non-empty */
254 	return (*result != '\0');
255 }
256 
257 static void
258 process_into_file(char *line, FILE *ofp)
259 {
260 	char result[BUFSIZ];
261 
262 	if (preprocess(line, result))
263 		fprintf(ofp, "\"%s\\0\"\n", result);
264 }
265 
266 static int
267 process_into_map(char *line, env_map &emap)
268 {
269 	char result[BUFSIZ], *s;
270 
271 	if (preprocess(line, result)) {
272 		s = strchr(result, '=');
273 		if (s == NULL)
274 			return (EINVAL);
275 		*s = '\0';
276 		emap[result] = s + 1;
277 	}
278 
279 	return (0);
280 }
281 
282 static void
283 dump_map(env_map &emap, FILE *ofp)
284 {
285 
286 	for (auto iter : emap) {
287 		fprintf(ofp, "\"%s=%s\\0\"\n", iter.first.c_str(),
288 		    iter.second.c_str());
289 	}
290 }
291 
292 /*
293  * Build hints.c from the skeleton
294  */
295 void
296 makehints(void)
297 {
298 	FILE *ifp, *ofp;
299 	env_map emap;
300 	char line[BUFSIZ];
301 	struct hint *hint;
302 
303 	ofp = fopen(path("hints.c.new"), "w");
304 	if (ofp == NULL)
305 		err(1, "%s", path("hints.c.new"));
306 	fprintf(ofp, "#include <sys/types.h>\n");
307 	fprintf(ofp, "#include <sys/systm.h>\n");
308 	fprintf(ofp, "\n");
309 	/*
310 	 * Write out hintmode for older kernels. Remove when config(8) major
311 	 * version rolls over.
312 	 */
313 	if (versreq <= CONFIGVERS_ENVMODE_REQ)
314 		fprintf(ofp, "int hintmode = %d;\n",
315 			!STAILQ_EMPTY(&hints) ? 1 : 0);
316 	fprintf(ofp, "char static_hints[] = {\n");
317 	STAILQ_FOREACH(hint, &hints, hint_next) {
318 		ifp = fopen(hint->hint_name, "r");
319 		if (ifp == NULL)
320 			err(1, "%s", hint->hint_name);
321 		while (fgets(line, BUFSIZ, ifp) != NULL) {
322 			if (process_into_map(line, emap) != 0)
323 				errout("%s: malformed line: %s\n",
324 				    hint->hint_name, line);
325 		}
326 		dump_map(emap, ofp);
327 		fclose(ifp);
328 	}
329 	fprintf(ofp, "\"\\0\"\n};\n");
330 	fclose(ofp);
331 	moveifchanged("hints.c.new", "hints.c");
332 }
333 
334 /*
335  * Build env.c from the skeleton
336  */
337 void
338 makeenv(void)
339 {
340 	FILE *ifp, *ofp;
341 	env_map emap;
342 	char line[BUFSIZ];
343 	struct envvar *envvar;
344 
345 	ofp = fopen(path("env.c.new"), "w");
346 	if (ofp == NULL)
347 		err(1, "%s", path("env.c.new"));
348 	fprintf(ofp, "#include <sys/types.h>\n");
349 	fprintf(ofp, "#include <sys/systm.h>\n");
350 	fprintf(ofp, "\n");
351 	/*
352 	 * Write out envmode for older kernels. Remove when config(8) major
353 	 * version rolls over.
354 	 */
355 	if (versreq <= CONFIGVERS_ENVMODE_REQ)
356 		fprintf(ofp, "int envmode = %d;\n",
357 			!STAILQ_EMPTY(&envvars) ? 1 : 0);
358 	fprintf(ofp, "char static_env[] = {\n");
359 	STAILQ_FOREACH(envvar, &envvars, envvar_next) {
360 		if (envvar->env_is_file) {
361 			ifp = fopen(envvar->env_str, "r");
362 			if (ifp == NULL)
363 				err(1, "%s", envvar->env_str);
364 			while (fgets(line, BUFSIZ, ifp) != NULL) {
365 				if (process_into_map(line, emap) != 0)
366 					errout("%s: malformed line: %s\n",
367 					    envvar->env_str, line);
368 			}
369 			dump_map(emap, ofp);
370 			fclose(ifp);
371 		} else
372 			process_into_file(envvar->env_str, ofp);
373 	}
374 	fprintf(ofp, "\"\\0\"\n};\n");
375 	fclose(ofp);
376 	moveifchanged("env.c.new", "env.c");
377 }
378 
379 static void
380 read_file(char *fname)
381 {
382 	char ifname[MAXPATHLEN];
383 	FILE *fp;
384 	struct file_list *tp;
385 	struct device *dp;
386 	struct opt *op;
387 	struct includepath *ipath;
388 	configword wd;
389 	char *rfile, *compilewith, *depends, *clean, *fnamebuf, *warning;
390 	const char *objprefix;
391 	int compile, match, nreqs, std, filetype, negate,
392 	    imp_rule, no_ctfconvert, no_obj, before_depend, nowerror;
393 
394 	fp = fopen(fname, "r");
395 	if (fp == NULL) {
396 		SLIST_FOREACH(ipath, &includepath, path_next) {
397 			asprintf(&fnamebuf, "%s/%s", ipath->path, fname);
398 			if (fnamebuf != NULL) {
399 				fp = fopen(fnamebuf, "r");
400 				if (fp != NULL)
401 					break;
402 				free(fnamebuf);
403 			}
404 		}
405 	}
406 	if (fp == NULL)
407 		err(1, "%s", fname);
408 next:
409 	/*
410 	 * include "filename"
411 	 * filename    [ standard | optional ]
412 	 *	[ dev* [ | dev* ... ] | [ no-obj ]
413 	 *	[ compile-with "compile rule" [no-implicit-rule] ]
414 	 *      [ dependency "dependency-list"] [ before-depend ]
415 	 *	[ clean "file-list"] [ warning "text warning" ]
416 	 *	[ obj-prefix "file prefix"]
417 	 *	[ nowerror ] [ local ]
418 	 */
419 	wd = get_word(fp);
420 	if (wd.eof()) {
421 		(void) fclose(fp);
422 		return;
423 	}
424 	if (wd.eol())
425 		goto next;
426 	if (wd[0] == '#')
427 	{
428 		while (!(wd = get_word(fp)).eof() && !wd.eol())
429 			;
430 		goto next;
431 	}
432 	if (eq(wd, "include")) {
433 		wd = get_quoted_word(fp);
434 		if (wd.eof() || wd.eol())
435 			errout("%s: missing include filename.\n", fname);
436 		(void) snprintf(ifname, sizeof(ifname), "../../%s",
437 		    wd->c_str());
438 		read_file(ifname);
439 		while (!(wd = get_word(fp)).eof() && !wd.eol())
440 			;
441 		goto next;
442 	}
443 	rfile = ns(wd);
444 	wd = get_word(fp);
445 	if (wd.eof())
446 		return;
447 	if (wd.eol())
448 		errout("%s: No type for %s.\n", fname, rfile);
449 	tp = fl_lookup(rfile);
450 	compile = 0;
451 	match = 1;
452 	nreqs = 0;
453 	compilewith = NULL;
454 	depends = NULL;
455 	clean = NULL;
456 	warning = NULL;
457 	std = 0;
458 	imp_rule = 0;
459 	no_ctfconvert = 0;
460 	no_obj = 0;
461 	before_depend = 0;
462 	nowerror = 0;
463 	negate = 0;
464 	filetype = NORMAL;
465 	objprefix = "";
466 	if (eq(wd, "standard"))
467 		std = 1;
468 	else if (!eq(wd, "optional"))
469 		errout("%s: \"%s\" %s must be optional or standard\n",
470 		    fname, wd->c_str(), rfile);
471 	for (wd = get_word(fp); !wd.eol(); wd = get_word(fp)) {
472 		if (wd.eof())
473 			return;
474 		if (eq(wd, "!")) {
475 			negate = 1;
476 			continue;
477 		}
478 		if (eq(wd, "|")) {
479 			if (nreqs == 0)
480 				errout("%s: syntax error describing %s\n",
481 				       fname, rfile);
482 			compile += match;
483 			match = 1;
484 			nreqs = 0;
485 			continue;
486 		}
487 		if (eq(wd, "no-ctfconvert")) {
488 			no_ctfconvert++;
489 			continue;
490 		}
491 		if (eq(wd, "no-obj")) {
492 			no_obj++;
493 			continue;
494 		}
495 		if (eq(wd, "no-implicit-rule")) {
496 			if (compilewith == NULL)
497 				errout("%s: alternate rule required when "
498 				       "\"no-implicit-rule\" is specified for"
499 				       " %s.\n",
500 				       fname, rfile);
501 			imp_rule++;
502 			continue;
503 		}
504 		if (eq(wd, "before-depend")) {
505 			before_depend++;
506 			continue;
507 		}
508 		if (eq(wd, "dependency")) {
509 			wd = get_quoted_word(fp);
510 			if (wd.eof() || wd.eol())
511 				errout("%s: %s missing dependency string.\n",
512 				       fname, rfile);
513 			depends = ns(wd);
514 			continue;
515 		}
516 		if (eq(wd, "clean")) {
517 			wd = get_quoted_word(fp);
518 			if (wd.eof() || wd.eol())
519 				errout("%s: %s missing clean file list.\n",
520 				       fname, rfile);
521 			clean = ns(wd);
522 			continue;
523 		}
524 		if (eq(wd, "compile-with")) {
525 			wd = get_quoted_word(fp);
526 			if (wd.eof() || wd.eol())
527 				errout("%s: %s missing compile command string.\n",
528 				       fname, rfile);
529 			compilewith = ns(wd);
530 			continue;
531 		}
532 		if (eq(wd, "warning")) {
533 			wd = get_quoted_word(fp);
534 			if (wd.eof() || wd.eol())
535 				errout("%s: %s missing warning text string.\n",
536 				       fname, rfile);
537 			warning = ns(wd);
538 			continue;
539 		}
540 		if (eq(wd, "obj-prefix")) {
541 			wd = get_quoted_word(fp);
542 			if (wd.eof() || wd.eol())
543 				errout("%s: %s missing object prefix string.\n",
544 				       fname, rfile);
545 			objprefix = ns(wd);
546 			continue;
547 		}
548 		if (eq(wd, "nowerror")) {
549 			nowerror = 1;
550 			continue;
551 		}
552 		if (eq(wd, "local")) {
553 			filetype = LOCAL;
554 			continue;
555 		}
556 		if (eq(wd, "no-depend")) {
557 			filetype = NODEPEND;
558 			continue;
559 		}
560 		nreqs++;
561 		if (std)
562 			errout("standard entry %s has optional inclusion specifier %s!\n",
563 			       rfile, wd->c_str());
564 		STAILQ_FOREACH(dp, &dtab, d_next)
565 			if (eq(dp->d_name, wd)) {
566 				if (negate)
567 					match = 0;
568 				else
569 					dp->d_done |= DEVDONE;
570 				goto nextparam;
571 			}
572 		SLIST_FOREACH(op, &opt, op_next)
573 			if (op->op_value == 0 &&
574 			    strcasecmp(op->op_name, wd) == 0) {
575 				if (negate)
576 					match = 0;
577 				goto nextparam;
578 			}
579 		match &= negate;
580 nextparam:
581 		negate = 0;
582 	}
583 	compile += match;
584 	if (compile && tp == NULL) {
585 		if (std == 0 && nreqs == 0)
586 			errout("%s: what is %s optional on?\n",
587 			       fname, rfile);
588 		tp = new_fent();
589 		tp->f_fn = rfile;
590 		tp->f_type = filetype;
591 		if (filetype == LOCAL)
592 			tp->f_srcprefix = "";
593 		else
594 			tp->f_srcprefix = "$S/";
595 		if (imp_rule)
596 			tp->f_flags |= NO_IMPLCT_RULE;
597 		if (no_ctfconvert)
598 			tp->f_flags |= NO_CTFCONVERT;
599 		if (no_obj)
600 			tp->f_flags |= NO_OBJ | NO_CTFCONVERT;
601 		if (before_depend)
602 			tp->f_flags |= BEFORE_DEPEND;
603 		if (nowerror)
604 			tp->f_flags |= NOWERROR;
605 		tp->f_compilewith = compilewith;
606 		tp->f_depends = depends;
607 		tp->f_clean = clean;
608 		tp->f_warn = warning;
609 		tp->f_objprefix = objprefix;
610 	}
611 	goto next;
612 }
613 
614 /*
615  * Read in the information about files used in making the system.
616  * Store it in the ftab linked list.
617  */
618 static void
619 read_files(void)
620 {
621 	char fname[MAXPATHLEN];
622 	struct files_name *nl, *tnl;
623 
624 	(void) snprintf(fname, sizeof(fname), "../../conf/files");
625 	read_file(fname);
626 	(void) snprintf(fname, sizeof(fname),
627 		       	"../../conf/files.%s", machinename);
628 	read_file(fname);
629 	for (nl = STAILQ_FIRST(&fntab); nl != NULL; nl = tnl) {
630 		read_file(nl->f_name);
631 		tnl = STAILQ_NEXT(nl, f_next);
632 		free(nl->f_name);
633 		free(nl);
634 	}
635 }
636 
637 static void
638 do_before_depend(FILE *fp)
639 {
640 	struct file_list *tp;
641 	int lpos, len;
642 
643 	fputs("BEFORE_DEPEND=", fp);
644 	lpos = 15;
645 	STAILQ_FOREACH(tp, &ftab, f_next)
646 		if (tp->f_flags & BEFORE_DEPEND) {
647 			len = strlen(tp->f_fn) + strlen(tp->f_srcprefix);
648 			if (len + lpos > 72) {
649 				lpos = 8;
650 				fputs("\\\n\t", fp);
651 			}
652 			if (tp->f_flags & NO_IMPLCT_RULE)
653 				lpos += fprintf(fp, "%s ", tp->f_fn);
654 			else
655 				lpos += fprintf(fp, "%s%s ", tp->f_srcprefix,
656 				    tp->f_fn);
657 		}
658 	if (lpos != 8)
659 		putc('\n', fp);
660 }
661 
662 static void
663 do_objs(FILE *fp)
664 {
665 	struct file_list *tp;
666 	int lpos, len;
667 	char *cp, och, *sp;
668 
669 	fprintf(fp, "OBJS=");
670 	lpos = 6;
671 	STAILQ_FOREACH(tp, &ftab, f_next) {
672 		if (tp->f_flags & NO_OBJ)
673 			continue;
674 		sp = tail(tp->f_fn);
675 		cp = sp + (len = strlen(sp)) - 1;
676 		och = *cp;
677 		*cp = 'o';
678 		len += strlen(tp->f_objprefix);
679 		if (len + lpos > 72) {
680 			lpos = 8;
681 			fprintf(fp, "\\\n\t");
682 		}
683 		fprintf(fp, "%s%s ", tp->f_objprefix, sp);
684 		lpos += len + 1;
685 		*cp = och;
686 	}
687 	if (lpos != 8)
688 		putc('\n', fp);
689 }
690 
691 static void
692 do_xxfiles(char *tag, FILE *fp)
693 {
694 	struct file_list *tp;
695 	int lpos, len, slen;
696 	char *suff, *SUFF;
697 
698 	if (tag[strlen(tag) - 1] == '\n')
699 		tag[strlen(tag) - 1] = '\0';
700 
701 	suff = ns(tag + 7);
702 	SUFF = ns(suff);
703 	raisestr(SUFF);
704 	slen = strlen(suff);
705 
706 	fprintf(fp, "%sFILES=", SUFF);
707 	free(SUFF);
708 	lpos = 8;
709 	STAILQ_FOREACH(tp, &ftab, f_next)
710 		if (tp->f_type != NODEPEND) {
711 			len = strlen(tp->f_fn);
712 			if (tp->f_fn[len - slen - 1] != '.')
713 				continue;
714 			if (strcasecmp(&tp->f_fn[len - slen], suff) != 0)
715 				continue;
716 			if (len + strlen(tp->f_srcprefix) + lpos > 72) {
717 				lpos = 8;
718 				fputs("\\\n\t", fp);
719 			}
720 			lpos += fprintf(fp, "%s%s ", tp->f_srcprefix, tp->f_fn);
721 		}
722 	free(suff);
723 	if (lpos != 8)
724 		putc('\n', fp);
725 }
726 
727 static char *
728 tail(char *fn)
729 {
730 	char *cp;
731 
732 	cp = strrchr(fn, '/');
733 	if (cp == NULL)
734 		return (fn);
735 	return (cp+1);
736 }
737 
738 /*
739  * Create the makerules for each file
740  * which is part of the system.
741  */
742 static void
743 do_rules(FILE *f)
744 {
745 	char *cp, *np, och;
746 	struct file_list *ftp;
747 	char *compilewith;
748 	char cmd[128];
749 
750 	STAILQ_FOREACH(ftp, &ftab, f_next) {
751 		if (ftp->f_warn)
752 			fprintf(stderr, "WARNING: %s\n", ftp->f_warn);
753 		cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
754 		och = *cp;
755 		if (ftp->f_flags & NO_IMPLCT_RULE) {
756 			if (ftp->f_depends)
757 				fprintf(f, "%s%s: %s\n",
758 					ftp->f_objprefix, np, ftp->f_depends);
759 			else
760 				fprintf(f, "%s%s: \n", ftp->f_objprefix, np);
761 		}
762 		else {
763 			*cp = '\0';
764 			if (och == 'o') {
765 				fprintf(f, "%s%so:\n\t-cp %s%so .\n\n",
766 					ftp->f_objprefix, tail(np),
767 					ftp->f_srcprefix, np);
768 				continue;
769 			}
770 			if (ftp->f_depends) {
771 				fprintf(f, "%s%so: %s%s%c %s\n",
772 					ftp->f_objprefix, tail(np),
773 					ftp->f_srcprefix, np, och,
774 					ftp->f_depends);
775 			}
776 			else {
777 				fprintf(f, "%s%so: %s%s%c\n",
778 					ftp->f_objprefix, tail(np),
779 					ftp->f_srcprefix, np, och);
780 			}
781 		}
782 		compilewith = ftp->f_compilewith;
783 		if (compilewith == NULL) {
784 			const char *ftype = NULL;
785 
786 			switch (ftp->f_type) {
787 			case NORMAL:
788 				ftype = "NORMAL";
789 				break;
790 			default:
791 				fprintf(stderr,
792 				    "config: don't know rules for %s\n", np);
793 				break;
794 			}
795 			snprintf(cmd, sizeof(cmd),
796 			    "${%s_%c%s}", ftype,
797 			    toupper(och),
798 			    ftp->f_flags & NOWERROR ? "_NOWERROR" : "");
799 			compilewith = cmd;
800 		}
801 		*cp = och;
802 		if (strlen(ftp->f_objprefix))
803 			fprintf(f, "\t%s %s%s\n", compilewith,
804 			    ftp->f_srcprefix, np);
805 		else
806 			fprintf(f, "\t%s\n", compilewith);
807 
808 		if (!(ftp->f_flags & NO_CTFCONVERT))
809 			fprintf(f, "\t${NORMAL_CTFCONVERT}\n\n");
810 		else
811 			fprintf(f, "\n");
812 	}
813 }
814 
815 static void
816 do_clean(FILE *fp)
817 {
818 	struct file_list *tp;
819 	int lpos, len;
820 
821 	fputs("CLEAN=", fp);
822 	lpos = 7;
823 	STAILQ_FOREACH(tp, &ftab, f_next)
824 		if (tp->f_clean) {
825 			len = strlen(tp->f_clean);
826 			if (len + lpos > 72) {
827 				lpos = 8;
828 				fputs("\\\n\t", fp);
829 			}
830 			fprintf(fp, "%s ", tp->f_clean);
831 			lpos += len + 1;
832 		}
833 	if (lpos != 8)
834 		putc('\n', fp);
835 }
836 
837 char *
838 raisestr(char *str)
839 {
840 	char *cp = str;
841 
842 	while (*str) {
843 		if (islower(*str))
844 			*str = toupper(*str);
845 		str++;
846 	}
847 	return (cp);
848 }
849