xref: /freebsd/usr.sbin/config/mkmakefile.cc (revision 06c3fb2749bda94cb5201f81ffdb8fa6c3161b2e)
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 	configword wd;
388 	char *rfile, *compilewith, *depends, *clean, *warning;
389 	const char *objprefix;
390 	int compile, match, nreqs, std, filetype, negate,
391 	    imp_rule, no_ctfconvert, no_obj, before_depend, nowerror;
392 
393 	fp = fopen(fname, "r");
394 	if (fp == NULL)
395 		err(1, "%s", fname);
396 next:
397 	/*
398 	 * include "filename"
399 	 * filename    [ standard | optional ]
400 	 *	[ dev* [ | dev* ... ] | [ no-obj ]
401 	 *	[ compile-with "compile rule" [no-implicit-rule] ]
402 	 *      [ dependency "dependency-list"] [ before-depend ]
403 	 *	[ clean "file-list"] [ warning "text warning" ]
404 	 *	[ obj-prefix "file prefix"]
405 	 *	[ nowerror ] [ local ]
406 	 */
407 	wd = get_word(fp);
408 	if (wd.eof()) {
409 		(void) fclose(fp);
410 		return;
411 	}
412 	if (wd.eol())
413 		goto next;
414 	if (wd[0] == '#')
415 	{
416 		while (!(wd = get_word(fp)).eof() && !wd.eol())
417 			;
418 		goto next;
419 	}
420 	if (eq(wd, "include")) {
421 		wd = get_quoted_word(fp);
422 		if (wd.eof() || wd.eol())
423 			errout("%s: missing include filename.\n", fname);
424 		(void) snprintf(ifname, sizeof(ifname), "../../%s",
425 		    wd->c_str());
426 		read_file(ifname);
427 		while (!(wd = get_word(fp)).eof() && !wd.eol())
428 			;
429 		goto next;
430 	}
431 	rfile = ns(wd);
432 	wd = get_word(fp);
433 	if (wd.eof())
434 		return;
435 	if (wd.eol())
436 		errout("%s: No type for %s.\n", fname, rfile);
437 	tp = fl_lookup(rfile);
438 	compile = 0;
439 	match = 1;
440 	nreqs = 0;
441 	compilewith = NULL;
442 	depends = NULL;
443 	clean = NULL;
444 	warning = NULL;
445 	std = 0;
446 	imp_rule = 0;
447 	no_ctfconvert = 0;
448 	no_obj = 0;
449 	before_depend = 0;
450 	nowerror = 0;
451 	negate = 0;
452 	filetype = NORMAL;
453 	objprefix = "";
454 	if (eq(wd, "standard"))
455 		std = 1;
456 	else if (!eq(wd, "optional"))
457 		errout("%s: \"%s\" %s must be optional or standard\n",
458 		    fname, wd->c_str(), rfile);
459 	for (wd = get_word(fp); !wd.eol(); wd = get_word(fp)) {
460 		if (wd.eof())
461 			return;
462 		if (eq(wd, "!")) {
463 			negate = 1;
464 			continue;
465 		}
466 		if (eq(wd, "|")) {
467 			if (nreqs == 0)
468 				errout("%s: syntax error describing %s\n",
469 				       fname, rfile);
470 			compile += match;
471 			match = 1;
472 			nreqs = 0;
473 			continue;
474 		}
475 		if (eq(wd, "no-ctfconvert")) {
476 			no_ctfconvert++;
477 			continue;
478 		}
479 		if (eq(wd, "no-obj")) {
480 			no_obj++;
481 			continue;
482 		}
483 		if (eq(wd, "no-implicit-rule")) {
484 			if (compilewith == NULL)
485 				errout("%s: alternate rule required when "
486 				       "\"no-implicit-rule\" is specified for"
487 				       " %s.\n",
488 				       fname, rfile);
489 			imp_rule++;
490 			continue;
491 		}
492 		if (eq(wd, "before-depend")) {
493 			before_depend++;
494 			continue;
495 		}
496 		if (eq(wd, "dependency")) {
497 			wd = get_quoted_word(fp);
498 			if (wd.eof() || wd.eol())
499 				errout("%s: %s missing dependency string.\n",
500 				       fname, rfile);
501 			depends = ns(wd);
502 			continue;
503 		}
504 		if (eq(wd, "clean")) {
505 			wd = get_quoted_word(fp);
506 			if (wd.eof() || wd.eol())
507 				errout("%s: %s missing clean file list.\n",
508 				       fname, rfile);
509 			clean = ns(wd);
510 			continue;
511 		}
512 		if (eq(wd, "compile-with")) {
513 			wd = get_quoted_word(fp);
514 			if (wd.eof() || wd.eol())
515 				errout("%s: %s missing compile command string.\n",
516 				       fname, rfile);
517 			compilewith = ns(wd);
518 			continue;
519 		}
520 		if (eq(wd, "warning")) {
521 			wd = get_quoted_word(fp);
522 			if (wd.eof() || wd.eol())
523 				errout("%s: %s missing warning text string.\n",
524 				       fname, rfile);
525 			warning = ns(wd);
526 			continue;
527 		}
528 		if (eq(wd, "obj-prefix")) {
529 			wd = get_quoted_word(fp);
530 			if (wd.eof() || wd.eol())
531 				errout("%s: %s missing object prefix string.\n",
532 				       fname, rfile);
533 			objprefix = ns(wd);
534 			continue;
535 		}
536 		if (eq(wd, "nowerror")) {
537 			nowerror = 1;
538 			continue;
539 		}
540 		if (eq(wd, "local")) {
541 			filetype = LOCAL;
542 			continue;
543 		}
544 		if (eq(wd, "no-depend")) {
545 			filetype = NODEPEND;
546 			continue;
547 		}
548 		nreqs++;
549 		if (std)
550 			errout("standard entry %s has optional inclusion specifier %s!\n",
551 			       rfile, wd->c_str());
552 		STAILQ_FOREACH(dp, &dtab, d_next)
553 			if (eq(dp->d_name, wd)) {
554 				if (negate)
555 					match = 0;
556 				else
557 					dp->d_done |= DEVDONE;
558 				goto nextparam;
559 			}
560 		SLIST_FOREACH(op, &opt, op_next)
561 			if (op->op_value == 0 &&
562 			    strcasecmp(op->op_name, wd) == 0) {
563 				if (negate)
564 					match = 0;
565 				goto nextparam;
566 			}
567 		match &= negate;
568 nextparam:;
569 		negate = 0;
570 	}
571 	compile += match;
572 	if (compile && tp == NULL) {
573 		if (std == 0 && nreqs == 0)
574 			errout("%s: what is %s optional on?\n",
575 			       fname, rfile);
576 		tp = new_fent();
577 		tp->f_fn = rfile;
578 		tp->f_type = filetype;
579 		if (filetype == LOCAL)
580 			tp->f_srcprefix = "";
581 		else
582 			tp->f_srcprefix = "$S/";
583 		if (imp_rule)
584 			tp->f_flags |= NO_IMPLCT_RULE;
585 		if (no_ctfconvert)
586 			tp->f_flags |= NO_CTFCONVERT;
587 		if (no_obj)
588 			tp->f_flags |= NO_OBJ | NO_CTFCONVERT;
589 		if (before_depend)
590 			tp->f_flags |= BEFORE_DEPEND;
591 		if (nowerror)
592 			tp->f_flags |= NOWERROR;
593 		tp->f_compilewith = compilewith;
594 		tp->f_depends = depends;
595 		tp->f_clean = clean;
596 		tp->f_warn = warning;
597 		tp->f_objprefix = objprefix;
598 	}
599 	goto next;
600 }
601 
602 /*
603  * Read in the information about files used in making the system.
604  * Store it in the ftab linked list.
605  */
606 static void
607 read_files(void)
608 {
609 	char fname[MAXPATHLEN];
610 	struct files_name *nl, *tnl;
611 
612 	(void) snprintf(fname, sizeof(fname), "../../conf/files");
613 	read_file(fname);
614 	(void) snprintf(fname, sizeof(fname),
615 		       	"../../conf/files.%s", machinename);
616 	read_file(fname);
617 	for (nl = STAILQ_FIRST(&fntab); nl != NULL; nl = tnl) {
618 		read_file(nl->f_name);
619 		tnl = STAILQ_NEXT(nl, f_next);
620 		free(nl->f_name);
621 		free(nl);
622 	}
623 }
624 
625 static void
626 do_before_depend(FILE *fp)
627 {
628 	struct file_list *tp;
629 	int lpos, len;
630 
631 	fputs("BEFORE_DEPEND=", fp);
632 	lpos = 15;
633 	STAILQ_FOREACH(tp, &ftab, f_next)
634 		if (tp->f_flags & BEFORE_DEPEND) {
635 			len = strlen(tp->f_fn) + strlen(tp->f_srcprefix);
636 			if (len + lpos > 72) {
637 				lpos = 8;
638 				fputs("\\\n\t", fp);
639 			}
640 			if (tp->f_flags & NO_IMPLCT_RULE)
641 				lpos += fprintf(fp, "%s ", tp->f_fn);
642 			else
643 				lpos += fprintf(fp, "%s%s ", tp->f_srcprefix,
644 				    tp->f_fn);
645 		}
646 	if (lpos != 8)
647 		putc('\n', fp);
648 }
649 
650 static void
651 do_objs(FILE *fp)
652 {
653 	struct file_list *tp;
654 	int lpos, len;
655 	char *cp, och, *sp;
656 
657 	fprintf(fp, "OBJS=");
658 	lpos = 6;
659 	STAILQ_FOREACH(tp, &ftab, f_next) {
660 		if (tp->f_flags & NO_OBJ)
661 			continue;
662 		sp = tail(tp->f_fn);
663 		cp = sp + (len = strlen(sp)) - 1;
664 		och = *cp;
665 		*cp = 'o';
666 		len += strlen(tp->f_objprefix);
667 		if (len + lpos > 72) {
668 			lpos = 8;
669 			fprintf(fp, "\\\n\t");
670 		}
671 		fprintf(fp, "%s%s ", tp->f_objprefix, sp);
672 		lpos += len + 1;
673 		*cp = och;
674 	}
675 	if (lpos != 8)
676 		putc('\n', fp);
677 }
678 
679 static void
680 do_xxfiles(char *tag, FILE *fp)
681 {
682 	struct file_list *tp;
683 	int lpos, len, slen;
684 	char *suff, *SUFF;
685 
686 	if (tag[strlen(tag) - 1] == '\n')
687 		tag[strlen(tag) - 1] = '\0';
688 
689 	suff = ns(tag + 7);
690 	SUFF = ns(suff);
691 	raisestr(SUFF);
692 	slen = strlen(suff);
693 
694 	fprintf(fp, "%sFILES=", SUFF);
695 	free(SUFF);
696 	lpos = 8;
697 	STAILQ_FOREACH(tp, &ftab, f_next)
698 		if (tp->f_type != NODEPEND) {
699 			len = strlen(tp->f_fn);
700 			if (tp->f_fn[len - slen - 1] != '.')
701 				continue;
702 			if (strcasecmp(&tp->f_fn[len - slen], suff) != 0)
703 				continue;
704 			if (len + strlen(tp->f_srcprefix) + lpos > 72) {
705 				lpos = 8;
706 				fputs("\\\n\t", fp);
707 			}
708 			lpos += fprintf(fp, "%s%s ", tp->f_srcprefix, tp->f_fn);
709 		}
710 	free(suff);
711 	if (lpos != 8)
712 		putc('\n', fp);
713 }
714 
715 static char *
716 tail(char *fn)
717 {
718 	char *cp;
719 
720 	cp = strrchr(fn, '/');
721 	if (cp == NULL)
722 		return (fn);
723 	return (cp+1);
724 }
725 
726 /*
727  * Create the makerules for each file
728  * which is part of the system.
729  */
730 static void
731 do_rules(FILE *f)
732 {
733 	char *cp, *np, och;
734 	struct file_list *ftp;
735 	char *compilewith;
736 	char cmd[128];
737 
738 	STAILQ_FOREACH(ftp, &ftab, f_next) {
739 		if (ftp->f_warn)
740 			fprintf(stderr, "WARNING: %s\n", ftp->f_warn);
741 		cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
742 		och = *cp;
743 		if (ftp->f_flags & NO_IMPLCT_RULE) {
744 			if (ftp->f_depends)
745 				fprintf(f, "%s%s: %s\n",
746 					ftp->f_objprefix, np, ftp->f_depends);
747 			else
748 				fprintf(f, "%s%s: \n", ftp->f_objprefix, np);
749 		}
750 		else {
751 			*cp = '\0';
752 			if (och == 'o') {
753 				fprintf(f, "%s%so:\n\t-cp %s%so .\n\n",
754 					ftp->f_objprefix, tail(np),
755 					ftp->f_srcprefix, np);
756 				continue;
757 			}
758 			if (ftp->f_depends) {
759 				fprintf(f, "%s%so: %s%s%c %s\n",
760 					ftp->f_objprefix, tail(np),
761 					ftp->f_srcprefix, np, och,
762 					ftp->f_depends);
763 			}
764 			else {
765 				fprintf(f, "%s%so: %s%s%c\n",
766 					ftp->f_objprefix, tail(np),
767 					ftp->f_srcprefix, np, och);
768 			}
769 		}
770 		compilewith = ftp->f_compilewith;
771 		if (compilewith == NULL) {
772 			const char *ftype = NULL;
773 
774 			switch (ftp->f_type) {
775 			case NORMAL:
776 				ftype = "NORMAL";
777 				break;
778 			default:
779 				fprintf(stderr,
780 				    "config: don't know rules for %s\n", np);
781 				break;
782 			}
783 			snprintf(cmd, sizeof(cmd),
784 			    "${%s_%c%s}", ftype,
785 			    toupper(och),
786 			    ftp->f_flags & NOWERROR ? "_NOWERROR" : "");
787 			compilewith = cmd;
788 		}
789 		*cp = och;
790 		if (strlen(ftp->f_objprefix))
791 			fprintf(f, "\t%s %s%s\n", compilewith,
792 			    ftp->f_srcprefix, np);
793 		else
794 			fprintf(f, "\t%s\n", compilewith);
795 
796 		if (!(ftp->f_flags & NO_CTFCONVERT))
797 			fprintf(f, "\t${NORMAL_CTFCONVERT}\n\n");
798 		else
799 			fprintf(f, "\n");
800 	}
801 }
802 
803 static void
804 do_clean(FILE *fp)
805 {
806 	struct file_list *tp;
807 	int lpos, len;
808 
809 	fputs("CLEAN=", fp);
810 	lpos = 7;
811 	STAILQ_FOREACH(tp, &ftab, f_next)
812 		if (tp->f_clean) {
813 			len = strlen(tp->f_clean);
814 			if (len + lpos > 72) {
815 				lpos = 8;
816 				fputs("\\\n\t", fp);
817 			}
818 			fprintf(fp, "%s ", tp->f_clean);
819 			lpos += len + 1;
820 		}
821 	if (lpos != 8)
822 		putc('\n', fp);
823 }
824 
825 char *
826 raisestr(char *str)
827 {
828 	char *cp = str;
829 
830 	while (*str) {
831 		if (islower(*str))
832 			*str = toupper(*str);
833 		str++;
834 	}
835 	return (cp);
836 }
837