1/*
2 * Copyright (c) 1994 University of Maryland
3 * All Rights Reserved.
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of U.M. not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission.  U.M. makes no representations about the
12 * suitability of this software for any purpose.  It is provided "as is"
13 * without express or implied warranty.
14 *
15 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 *
22 * Author: James da Silva, Systems Design and Analysis Group
23 *			   Computer Science Department
24 *			   University of Maryland at College Park
25 */
26/*
27 * ========================================================================
28 * crunchgen.c
29 *
30 * Generates a Makefile and main C file for a crunched executable,
31 * from specs given in a .conf file.
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37#include <sys/param.h>
38#include <sys/stat.h>
39
40#include <ctype.h>
41#include <err.h>
42#include <paths.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47
48#define CRUNCH_VERSION	"0.2"
49
50#define MAXLINELEN	16384
51#define MAXFIELDS 	 2048
52
53
54/* internal representation of conf file: */
55
56/* simple lists of strings suffice for most parms */
57
58typedef struct strlst {
59	struct strlst *next;
60	char *str;
61} strlst_t;
62
63/* progs have structure, each field can be set with "special" or calculated */
64
65typedef struct prog {
66	struct prog *next;	/* link field */
67	char *name;		/* program name */
68	char *ident;		/* C identifier for the program name */
69	char *srcdir;
70	char *realsrcdir;
71	char *objdir;
72	char *objvar;		/* Makefile variable to replace OBJS */
73	strlst_t *objs, *objpaths;
74	strlst_t *buildopts;
75	strlst_t *keeplist;
76	strlst_t *links;
77	strlst_t *libs;
78	strlst_t *libs_so;
79	int goterror;
80} prog_t;
81
82
83/* global state */
84
85strlst_t *buildopts = NULL;
86strlst_t *srcdirs   = NULL;
87strlst_t *libs      = NULL;
88strlst_t *libs_so   = NULL;
89prog_t   *progs     = NULL;
90
91char confname[MAXPATHLEN], infilename[MAXPATHLEN];
92char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN];
93char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN];
94char outhdrname[MAXPATHLEN] ;	/* user-supplied header for *.mk */
95char *objprefix;		/* where are the objects ? */
96char *path_make;
97int linenum = -1;
98int goterror = 0;
99
100int verbose, readcache;		/* options */
101int reading_cache;
102int makeobj = 0;		/* add 'make obj' rules to the makefile */
103
104int list_mode;
105
106/* general library routines */
107
108void status(const char *str);
109void out_of_memory(void);
110void add_string(strlst_t **listp, char *str);
111int is_dir(const char *pathname);
112int is_nonempty_file(const char *pathname);
113int subtract_strlst(strlst_t **lista, strlst_t **listb);
114int in_list(strlst_t **listp, char *str);
115
116/* helper routines for main() */
117
118void usage(void);
119void parse_conf_file(void);
120void gen_outputs(void);
121
122extern char *crunched_skel[];
123
124
125int
126main(int argc, char **argv)
127{
128	char *p;
129	int optc;
130
131	verbose = 1;
132	readcache = 1;
133	*outmkname = *outcfname = *execfname = '\0';
134
135	path_make = getenv("MAKE");
136	if (path_make == NULL || *path_make == '\0')
137		path_make = "make";
138
139	p = getenv("MAKEOBJDIRPREFIX");
140	if (p == NULL || *p == '\0')
141		objprefix = "/usr/obj"; /* default */
142	else
143		if ((objprefix = strdup(p)) == NULL)
144			out_of_memory();
145
146	while((optc = getopt(argc, argv, "lh:m:c:e:p:foq")) != -1) {
147		switch(optc) {
148		case 'f':
149			readcache = 0;
150			break;
151		case 'o':
152			makeobj = 1;
153			break;
154		case 'q':
155			verbose = 0;
156			break;
157
158		case 'm':
159			strlcpy(outmkname, optarg, sizeof(outmkname));
160			break;
161		case 'p':
162			if ((objprefix = strdup(optarg)) == NULL)
163				out_of_memory();
164			break;
165
166		case 'h':
167			strlcpy(outhdrname, optarg, sizeof(outhdrname));
168			break;
169		case 'c':
170			strlcpy(outcfname, optarg, sizeof(outcfname));
171			break;
172		case 'e':
173			strlcpy(execfname, optarg, sizeof(execfname));
174			break;
175
176		case 'l':
177			list_mode++;
178			verbose = 0;
179			break;
180
181		case '?':
182		default:
183			usage();
184		}
185	}
186
187	argc -= optind;
188	argv += optind;
189
190	if (argc != 1)
191		usage();
192
193	/*
194	 * generate filenames
195	 */
196
197	strlcpy(infilename, argv[0], sizeof(infilename));
198
199	/* confname = `basename infilename .conf` */
200
201	if ((p=strrchr(infilename, '/')) != NULL)
202		strlcpy(confname, p + 1, sizeof(confname));
203	else
204		strlcpy(confname, infilename, sizeof(confname));
205
206	if ((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf"))
207		*p = '\0';
208
209	if (!*outmkname)
210		snprintf(outmkname, sizeof(outmkname), "%s.mk", confname);
211	if (!*outcfname)
212		snprintf(outcfname, sizeof(outcfname), "%s.c", confname);
213	if (!*execfname)
214		snprintf(execfname, sizeof(execfname), "%s", confname);
215
216	snprintf(cachename, sizeof(cachename), "%s.cache", confname);
217	snprintf(tempfname, sizeof(tempfname), "%s/crunchgen_%sXXXXXX",
218	getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP, confname);
219
220	parse_conf_file();
221	if (list_mode)
222		exit(goterror);
223
224	gen_outputs();
225
226	exit(goterror);
227}
228
229
230void
231usage(void)
232{
233	fprintf(stderr, "%s%s\n\t%s%s\n", "usage: crunchgen [-foq] ",
234	    "[-h <makefile-header-name>] [-m <makefile>]",
235	    "[-p <obj-prefix>] [-c <c-file-name>] [-e <exec-file>] ",
236	    "<conffile>");
237	exit(1);
238}
239
240
241/*
242 * ========================================================================
243 * parse_conf_file subsystem
244 *
245 */
246
247/* helper routines for parse_conf_file */
248
249void parse_one_file(char *filename);
250void parse_line(char *pline, int *fc, char **fv, int nf);
251void add_srcdirs(int argc, char **argv);
252void add_progs(int argc, char **argv);
253void add_link(int argc, char **argv);
254void add_libs(int argc, char **argv);
255void add_libs_so(int argc, char **argv);
256void add_buildopts(int argc, char **argv);
257void add_special(int argc, char **argv);
258
259prog_t *find_prog(char *str);
260void add_prog(char *progname);
261
262
263void
264parse_conf_file(void)
265{
266	if (!is_nonempty_file(infilename))
267		errx(1, "fatal: input file \"%s\" not found", infilename);
268
269	parse_one_file(infilename);
270	if (readcache && is_nonempty_file(cachename)) {
271		reading_cache = 1;
272		parse_one_file(cachename);
273	}
274}
275
276
277void
278parse_one_file(char *filename)
279{
280	char *fieldv[MAXFIELDS];
281	int fieldc;
282	void (*f)(int c, char **v);
283	FILE *cf;
284	char line[MAXLINELEN];
285
286	snprintf(line, sizeof(line), "reading %s", filename);
287	status(line);
288	strlcpy(curfilename, filename, sizeof(curfilename));
289
290	if ((cf = fopen(curfilename, "r")) == NULL) {
291		warn("%s", curfilename);
292		goterror = 1;
293		return;
294	}
295
296	linenum = 0;
297	while (fgets(line, MAXLINELEN, cf) != NULL) {
298		linenum++;
299		parse_line(line, &fieldc, fieldv, MAXFIELDS);
300
301		if (fieldc < 1)
302			continue;
303
304		if (!strcmp(fieldv[0], "srcdirs"))
305			f = add_srcdirs;
306		else if(!strcmp(fieldv[0], "progs"))
307			f = add_progs;
308		else if(!strcmp(fieldv[0], "ln"))
309			f = add_link;
310		else if(!strcmp(fieldv[0], "libs"))
311			f = add_libs;
312		else if(!strcmp(fieldv[0], "libs_so"))
313			f = add_libs_so;
314		else if(!strcmp(fieldv[0], "buildopts"))
315			f = add_buildopts;
316		else if(!strcmp(fieldv[0], "special"))
317			f = add_special;
318		else {
319			warnx("%s:%d: skipping unknown command `%s'",
320			    curfilename, linenum, fieldv[0]);
321			goterror = 1;
322			continue;
323		}
324
325		if (fieldc < 2) {
326			warnx("%s:%d: %s %s",
327			    curfilename, linenum, fieldv[0],
328			    "command needs at least 1 argument, skipping");
329			goterror = 1;
330			continue;
331		}
332
333		f(fieldc, fieldv);
334	}
335
336	if (ferror(cf)) {
337		warn("%s", curfilename);
338		goterror = 1;
339	}
340	fclose(cf);
341}
342
343
344void
345parse_line(char *pline, int *fc, char **fv, int nf)
346{
347	char *p;
348
349	p = pline;
350	*fc = 0;
351
352	while (1) {
353		while (isspace((unsigned char)*p))
354			p++;
355
356		if (*p == '\0' || *p == '#')
357			break;
358
359		if (*fc < nf)
360			fv[(*fc)++] = p;
361
362		while (*p && !isspace((unsigned char)*p) && *p != '#')
363			p++;
364
365		if (*p == '\0' || *p == '#')
366			break;
367
368		*p++ = '\0';
369	}
370
371	if (*p)
372		*p = '\0';		/* needed for '#' case */
373}
374
375
376void
377add_srcdirs(int argc, char **argv)
378{
379	int i;
380
381	for (i = 1; i < argc; i++) {
382		if (is_dir(argv[i]))
383			add_string(&srcdirs, argv[i]);
384		else {
385			warnx("%s:%d: `%s' is not a directory, skipping it",
386			    curfilename, linenum, argv[i]);
387			goterror = 1;
388		}
389	}
390}
391
392
393void
394add_progs(int argc, char **argv)
395{
396	int i;
397
398	for (i = 1; i < argc; i++)
399		add_prog(argv[i]);
400}
401
402
403void
404add_prog(char *progname)
405{
406	prog_t *p1, *p2;
407
408	/* add to end, but be smart about dups */
409
410	for (p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next)
411		if (!strcmp(p2->name, progname))
412			return;
413
414	p2 = malloc(sizeof(prog_t));
415	if(p2) {
416		memset(p2, 0, sizeof(prog_t));
417		p2->name = strdup(progname);
418	}
419	if (!p2 || !p2->name)
420		out_of_memory();
421
422	p2->next = NULL;
423	if (p1 == NULL)
424		progs = p2;
425	else
426		p1->next = p2;
427
428	p2->ident = NULL;
429	p2->srcdir = NULL;
430	p2->realsrcdir = NULL;
431	p2->objdir = NULL;
432	p2->links = NULL;
433	p2->libs = NULL;
434	p2->libs_so = NULL;
435	p2->objs = NULL;
436	p2->keeplist = NULL;
437	p2->buildopts = NULL;
438	p2->goterror = 0;
439
440	if (list_mode)
441		printf("%s\n",progname);
442}
443
444
445void
446add_link(int argc, char **argv)
447{
448	int i;
449	prog_t *p = find_prog(argv[1]);
450
451	if (p == NULL) {
452		warnx("%s:%d: no prog %s previously declared, skipping link",
453		    curfilename, linenum, argv[1]);
454		goterror = 1;
455		return;
456	}
457
458	for (i = 2; i < argc; i++) {
459		if (list_mode)
460			printf("%s\n",argv[i]);
461
462		add_string(&p->links, argv[i]);
463	}
464}
465
466
467void
468add_libs(int argc, char **argv)
469{
470	int i;
471
472	for(i = 1; i < argc; i++) {
473		add_string(&libs, argv[i]);
474		if ( in_list(&libs_so, argv[i]) )
475			warnx("%s:%d: "
476				"library `%s' specified as dynamic earlier",
477				curfilename, linenum, argv[i]);
478	}
479}
480
481
482void
483add_libs_so(int argc, char **argv)
484{
485	int i;
486
487	for(i = 1; i < argc; i++) {
488		add_string(&libs_so, argv[i]);
489		if ( in_list(&libs, argv[i]) )
490			warnx("%s:%d: "
491				"library `%s' specified as static earlier",
492				curfilename, linenum, argv[i]);
493	}
494}
495
496
497void
498add_buildopts(int argc, char **argv)
499{
500	int i;
501
502	for (i = 1; i < argc; i++)
503		add_string(&buildopts, argv[i]);
504}
505
506
507void
508add_special(int argc, char **argv)
509{
510	int i;
511	prog_t *p = find_prog(argv[1]);
512
513	if (p == NULL) {
514		if (reading_cache)
515			return;
516
517		warnx("%s:%d: no prog %s previously declared, skipping special",
518		    curfilename, linenum, argv[1]);
519		goterror = 1;
520		return;
521	}
522
523	if (!strcmp(argv[2], "ident")) {
524		if (argc != 4)
525			goto argcount;
526		if ((p->ident = strdup(argv[3])) == NULL)
527			out_of_memory();
528	} else if (!strcmp(argv[2], "srcdir")) {
529		if (argc != 4)
530			goto argcount;
531		if ((p->srcdir = strdup(argv[3])) == NULL)
532			out_of_memory();
533	} else if (!strcmp(argv[2], "objdir")) {
534		if(argc != 4)
535			goto argcount;
536		if((p->objdir = strdup(argv[3])) == NULL)
537			out_of_memory();
538	} else if (!strcmp(argv[2], "objs")) {
539		p->objs = NULL;
540		for (i = 3; i < argc; i++)
541			add_string(&p->objs, argv[i]);
542	} else if (!strcmp(argv[2], "objpaths")) {
543		p->objpaths = NULL;
544		for (i = 3; i < argc; i++)
545			add_string(&p->objpaths, argv[i]);
546	} else if (!strcmp(argv[2], "keep")) {
547		p->keeplist = NULL;
548		for(i = 3; i < argc; i++)
549			add_string(&p->keeplist, argv[i]);
550	} else if (!strcmp(argv[2], "objvar")) {
551		if(argc != 4)
552			goto argcount;
553		if ((p->objvar = strdup(argv[3])) == NULL)
554			out_of_memory();
555	} else if (!strcmp(argv[2], "buildopts")) {
556		p->buildopts = NULL;
557		for (i = 3; i < argc; i++)
558			add_string(&p->buildopts, argv[i]);
559	} else if (!strcmp(argv[2], "lib")) {
560		for (i = 3; i < argc; i++)
561			add_string(&p->libs, argv[i]);
562	} else {
563		warnx("%s:%d: bad parameter name `%s', skipping line",
564		    curfilename, linenum, argv[2]);
565		goterror = 1;
566	}
567	return;
568
569 argcount:
570	warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"",
571	    curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]);
572	goterror = 1;
573}
574
575
576prog_t *find_prog(char *str)
577{
578	prog_t *p;
579
580	for (p = progs; p != NULL; p = p->next)
581		if (!strcmp(p->name, str))
582			return p;
583
584	return NULL;
585}
586
587
588/*
589 * ========================================================================
590 * gen_outputs subsystem
591 *
592 */
593
594/* helper subroutines */
595
596void remove_error_progs(void);
597void fillin_program(prog_t *p);
598void gen_specials_cache(void);
599void gen_output_makefile(void);
600void gen_output_cfile(void);
601
602void fillin_program_objs(prog_t *p, char *path);
603void top_makefile_rules(FILE *outmk);
604void prog_makefile_rules(FILE *outmk, prog_t *p);
605void output_strlst(FILE *outf, strlst_t *lst);
606char *genident(char *str);
607char *dir_search(char *progname);
608
609
610void
611gen_outputs(void)
612{
613	prog_t *p;
614
615	for (p = progs; p != NULL; p = p->next)
616		fillin_program(p);
617
618	remove_error_progs();
619	gen_specials_cache();
620	gen_output_cfile();
621	gen_output_makefile();
622	status("");
623	fprintf(stderr,
624	    "Run \"%s -f %s\" to build crunched binary.\n",
625	    path_make, outmkname);
626}
627
628/*
629 * run the makefile for the program to find which objects are necessary
630 */
631void
632fillin_program(prog_t *p)
633{
634	char path[MAXPATHLEN];
635	char line[MAXLINELEN];
636	FILE *f;
637
638	snprintf(line, MAXLINELEN, "filling in parms for %s", p->name);
639	status(line);
640
641	if (!p->ident)
642		p->ident = genident(p->name);
643
644	/* look for the source directory if one wasn't specified by a special */
645	if (!p->srcdir) {
646		p->srcdir = dir_search(p->name);
647	}
648
649	/* Determine the actual srcdir (maybe symlinked). */
650	if (p->srcdir) {
651		snprintf(line, MAXLINELEN, "cd %s && echo -n `/bin/pwd`",
652		    p->srcdir);
653		f = popen(line,"r");
654		if (!f)
655			errx(1, "Can't execute: %s\n", line);
656
657		path[0] = '\0';
658		fgets(path, sizeof path, f);
659		if (pclose(f))
660			errx(1, "Can't execute: %s\n", line);
661
662		if (!*path)
663			errx(1, "Can't perform pwd on: %s\n", p->srcdir);
664
665		p->realsrcdir = strdup(path);
666	}
667
668	/* Unless the option to make object files was specified the
669	* the objects will be built in the source directory unless
670	* an object directory already exists.
671	*/
672	if (!makeobj && !p->objdir && p->srcdir) {
673		snprintf(line, sizeof line, "%s/%s", objprefix, p->realsrcdir);
674		if (is_dir(line)) {
675			if ((p->objdir = strdup(line)) == NULL)
676			out_of_memory();
677		} else
678			p->objdir = p->realsrcdir;
679	}
680
681	/*
682	* XXX look for a Makefile.{name} in local directory first.
683	* This lets us override the original Makefile.
684	*/
685	snprintf(path, sizeof(path), "Makefile.%s", p->name);
686	if (is_nonempty_file(path)) {
687		snprintf(line, MAXLINELEN, "Using %s for %s", path, p->name);
688		status(line);
689	} else
690		if (p->srcdir)
691			snprintf(path, sizeof(path), "%s/Makefile", p->srcdir);
692	if (!p->objs && p->srcdir && is_nonempty_file(path))
693		fillin_program_objs(p, path);
694
695	if (!p->srcdir && !p->objdir && verbose)
696		warnx("%s: %s: %s",
697		    "warning: could not find source directory",
698		    infilename, p->name);
699	if (!p->objs && verbose)
700		warnx("%s: %s: warning: could not find any .o files",
701		    infilename, p->name);
702
703	if ((!p->srcdir || !p->objdir) && !p->objs)
704		p->goterror = 1;
705}
706
707void
708fillin_program_objs(prog_t *p, char *path)
709{
710	char *obj, *cp;
711	int fd, rc;
712	FILE *f;
713	char *objvar="OBJS";
714	strlst_t *s;
715	char line[MAXLINELEN];
716
717	/* discover the objs from the srcdir Makefile */
718
719	if ((fd = mkstemp(tempfname)) == -1) {
720		perror(tempfname);
721		exit(1);
722	}
723	if ((f = fdopen(fd, "w")) == NULL) {
724		warn("%s", tempfname);
725		goterror = 1;
726		return;
727	}
728	if (p->objvar)
729		objvar = p->objvar;
730
731	/*
732	* XXX include outhdrname (e.g. to contain Make variables)
733	*/
734	if (outhdrname[0] != '\0')
735		fprintf(f, ".include \"%s\"\n", outhdrname);
736	fprintf(f, ".include \"%s\"\n", path);
737	fprintf(f, ".POSIX:\n");
738	if (buildopts) {
739		fprintf(f, "BUILDOPTS+=");
740		output_strlst(f, buildopts);
741	}
742	fprintf(f, ".if defined(PROG)\n");
743	fprintf(f, "%s?=${PROG}.o\n", objvar);
744	fprintf(f, ".endif\n");
745	fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar);
746
747	fprintf(f, "crunchgen_objs:\n"
748	    "\t@cd %s && %s -f %s $(BUILDOPTS) $(%s_OPTS)",
749	    p->srcdir, path_make, tempfname, p->ident);
750	for (s = p->buildopts; s != NULL; s = s->next)
751		fprintf(f, " %s", s->str);
752	fprintf(f, " loop\n");
753
754	fclose(f);
755
756	snprintf(line, MAXLINELEN, "cd %s && %s -f %s -B crunchgen_objs",
757	     p->srcdir, path_make, tempfname);
758	if ((f = popen(line, "r")) == NULL) {
759		warn("submake pipe");
760		goterror = 1;
761		return;
762	}
763
764	while(fgets(line, MAXLINELEN, f)) {
765		if (strncmp(line, "OBJS= ", 6)) {
766			warnx("make error: %s", line);
767			goterror = 1;
768			continue;
769		}
770
771		cp = line + 6;
772		while (isspace((unsigned char)*cp))
773			cp++;
774
775		while(*cp) {
776			obj = cp;
777			while (*cp && !isspace((unsigned char)*cp))
778				cp++;
779			if (*cp)
780				*cp++ = '\0';
781			add_string(&p->objs, obj);
782			while (isspace((unsigned char)*cp))
783				cp++;
784		}
785	}
786
787	if ((rc=pclose(f)) != 0) {
788		warnx("make error: make returned %d", rc);
789		goterror = 1;
790	}
791
792	unlink(tempfname);
793}
794
795void
796remove_error_progs(void)
797{
798	prog_t *p1, *p2;
799
800	p1 = NULL; p2 = progs;
801	while (p2 != NULL) {
802		if (!p2->goterror)
803			p1 = p2, p2 = p2->next;
804		else {
805			/* delete it from linked list */
806			warnx("%s: %s: ignoring program because of errors",
807			    infilename, p2->name);
808			if (p1)
809				p1->next = p2->next;
810			else
811				progs = p2->next;
812			p2 = p2->next;
813		}
814	}
815}
816
817void
818gen_specials_cache(void)
819{
820	FILE *cachef;
821	prog_t *p;
822	char line[MAXLINELEN];
823
824	snprintf(line, MAXLINELEN, "generating %s", cachename);
825	status(line);
826
827	if ((cachef = fopen(cachename, "w")) == NULL) {
828		warn("%s", cachename);
829		goterror = 1;
830		return;
831	}
832
833	fprintf(cachef, "# %s - parm cache generated from %s by crunchgen "
834	    " %s\n\n",
835	    cachename, infilename, CRUNCH_VERSION);
836
837	for (p = progs; p != NULL; p = p->next) {
838		fprintf(cachef, "\n");
839		if (p->srcdir)
840			fprintf(cachef, "special %s srcdir %s\n",
841			    p->name, p->srcdir);
842		if (p->objdir)
843			fprintf(cachef, "special %s objdir %s\n",
844			    p->name, p->objdir);
845		if (p->objs) {
846			fprintf(cachef, "special %s objs", p->name);
847			output_strlst(cachef, p->objs);
848		}
849		if (p->objpaths) {
850			fprintf(cachef, "special %s objpaths", p->name);
851			output_strlst(cachef, p->objpaths);
852		}
853	}
854	fclose(cachef);
855}
856
857
858void
859gen_output_makefile(void)
860{
861	prog_t *p;
862	FILE *outmk;
863	char line[MAXLINELEN];
864
865	snprintf(line, MAXLINELEN, "generating %s", outmkname);
866	status(line);
867
868	if ((outmk = fopen(outmkname, "w")) == NULL) {
869		warn("%s", outmkname);
870		goterror = 1;
871		return;
872	}
873
874	fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n",
875	    outmkname, infilename, CRUNCH_VERSION);
876
877	if (outhdrname[0] != '\0')
878		fprintf(outmk, ".include \"%s\"\n", outhdrname);
879
880	top_makefile_rules(outmk);
881	for (p = progs; p != NULL; p = p->next)
882		prog_makefile_rules(outmk, p);
883
884	fprintf(outmk, "\n# ========\n");
885	fclose(outmk);
886}
887
888
889void
890gen_output_cfile(void)
891{
892	char **cp;
893	FILE *outcf;
894	prog_t *p;
895	strlst_t *s;
896	char line[MAXLINELEN];
897
898	snprintf(line, MAXLINELEN, "generating %s", outcfname);
899	status(line);
900
901	if((outcf = fopen(outcfname, "w")) == NULL) {
902		warn("%s", outcfname);
903		goterror = 1;
904		return;
905	}
906
907	fprintf(outcf,
908	    "/* %s - generated from %s by crunchgen %s */\n",
909	    outcfname, infilename, CRUNCH_VERSION);
910
911	fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname);
912	for (cp = crunched_skel; *cp != NULL; cp++)
913		fprintf(outcf, "%s\n", *cp);
914
915	for (p = progs; p != NULL; p = p->next)
916		fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident);
917
918	fprintf(outcf, "\nstruct stub entry_points[] = {\n");
919	for (p = progs; p != NULL; p = p->next) {
920		fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n",
921		    p->name, p->ident);
922		for (s = p->links; s != NULL; s = s->next)
923			fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n",
924			    s->str, p->ident);
925	}
926
927	fprintf(outcf, "\t{ EXECNAME, crunched_main },\n");
928	fprintf(outcf, "\t{ NULL, NULL }\n};\n");
929	fclose(outcf);
930}
931
932
933char *genident(char *str)
934{
935	char *n, *s, *d;
936
937	/*
938	 * generates a Makefile/C identifier from a program name,
939	 * mapping '-' to '_' and ignoring all other non-identifier
940	 * characters.  This leads to programs named "foo.bar" and
941	 * "foobar" to map to the same identifier.
942	 */
943
944	if ((n = strdup(str)) == NULL)
945		return NULL;
946	for (d = s = n; *s != '\0'; s++) {
947		if (*s == '-')
948			*d++ = '_';
949		else if (*s == '_' || isalnum((unsigned char)*s))
950			*d++ = *s;
951	}
952	*d = '\0';
953	return n;
954}
955
956
957char *dir_search(char *progname)
958{
959	char path[MAXPATHLEN];
960	strlst_t *dir;
961	char *srcdir;
962
963	for (dir = srcdirs; dir != NULL; dir = dir->next) {
964		snprintf(path, MAXPATHLEN, "%s/%s", dir->str, progname);
965		if (!is_dir(path))
966			continue;
967
968		if ((srcdir = strdup(path)) == NULL)
969			out_of_memory();
970
971		return srcdir;
972	}
973	return NULL;
974}
975
976
977void
978top_makefile_rules(FILE *outmk)
979{
980	prog_t *p;
981
982	fprintf(outmk, "LD?= ld\n");
983	if ( subtract_strlst(&libs, &libs_so) )
984		fprintf(outmk, "# NOTE: Some LIBS declarations below overridden by LIBS_SO\n");
985
986	fprintf(outmk, "LIBS+=");
987	output_strlst(outmk, libs);
988
989	fprintf(outmk, "LIBS_SO+=");
990	output_strlst(outmk, libs_so);
991
992	if (makeobj) {
993		fprintf(outmk, "MAKEOBJDIRPREFIX?=%s\n", objprefix);
994		fprintf(outmk, "MAKEENV=env MAKEOBJDIRPREFIX=$(MAKEOBJDIRPREFIX)\n");
995		fprintf(outmk, "CRUNCHMAKE=$(MAKEENV) $(MAKE)\n");
996	} else {
997		fprintf(outmk, "CRUNCHMAKE=$(MAKE)\n");
998	}
999
1000	if (buildopts) {
1001		fprintf(outmk, "BUILDOPTS+=");
1002		output_strlst(outmk, buildopts);
1003	}
1004
1005	fprintf(outmk, "CRUNCHED_OBJS=");
1006	for (p = progs; p != NULL; p = p->next)
1007		fprintf(outmk, " %s.lo", p->name);
1008	fprintf(outmk, "\n");
1009
1010	fprintf(outmk, "SUBMAKE_TARGETS=");
1011	for (p = progs; p != NULL; p = p->next)
1012		fprintf(outmk, " %s_make", p->ident);
1013	fprintf(outmk, "\nSUBCLEAN_TARGETS=");
1014	for (p = progs; p != NULL; p = p->next)
1015		fprintf(outmk, " %s_clean", p->ident);
1016	fprintf(outmk, "\n\n");
1017
1018	fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n");
1019	fprintf(outmk, "exe: %s\n", execfname);
1020	fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS) $(SUBMAKE_TARGETS)\n", execfname, execfname);
1021	fprintf(outmk, ".if defined(LIBS_SO) && !empty(LIBS_SO)\n");
1022	fprintf(outmk, "\t$(CC) -o %s %s.o $(CRUNCHED_OBJS) \\\n",
1023	    execfname, execfname);
1024	fprintf(outmk, "\t\t-Xlinker -Bstatic $(LIBS) \\\n");
1025	fprintf(outmk, "\t\t-Xlinker -Bdynamic $(LIBS_SO)\n");
1026	fprintf(outmk, ".else\n");
1027	fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n",
1028	    execfname, execfname);
1029	fprintf(outmk, ".endif\n");
1030	fprintf(outmk, "\tstrip %s\n", execfname);
1031	fprintf(outmk, "realclean: clean subclean\n");
1032	fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", execfname);
1033	fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n");
1034}
1035
1036
1037void
1038prog_makefile_rules(FILE *outmk, prog_t *p)
1039{
1040	strlst_t *lst;
1041
1042	fprintf(outmk, "\n# -------- %s\n\n", p->name);
1043
1044	fprintf(outmk, "%s_OBJDIR=", p->ident);
1045	if (p->objdir)
1046		fprintf(outmk, "%s", p->objdir);
1047	else
1048		fprintf(outmk, "$(MAKEOBJDIRPREFIX)/$(%s_REALSRCDIR)\n",
1049		    p->ident);
1050	fprintf(outmk, "\n");
1051
1052	fprintf(outmk, "%s_OBJPATHS=", p->ident);
1053	if (p->objpaths)
1054		output_strlst(outmk, p->objpaths);
1055	else {
1056		for (lst = p->objs; lst != NULL; lst = lst->next) {
1057			fprintf(outmk, " $(%s_OBJDIR)/%s", p->ident, lst->str);
1058		}
1059		fprintf(outmk, "\n");
1060	}
1061
1062	if (p->srcdir && p->objs) {
1063		fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir);
1064		fprintf(outmk, "%s_REALSRCDIR=%s\n", p->ident, p->realsrcdir);
1065
1066		fprintf(outmk, "%s_OBJS=", p->ident);
1067		output_strlst(outmk, p->objs);
1068		if (p->buildopts != NULL) {
1069			fprintf(outmk, "%s_OPTS+=", p->ident);
1070			output_strlst(outmk, p->buildopts);
1071		}
1072#if 0
1073		fprintf(outmk, "$(%s_OBJPATHS): %s_make\n\n", p->ident, p->ident);
1074#endif
1075		fprintf(outmk, "%s_make:\n", p->ident);
1076		fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident);
1077		if (makeobj)
1078			fprintf(outmk, "$(CRUNCHMAKE) obj && ");
1079		fprintf(outmk, "\\\n");
1080		fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) depend &&",
1081		    p->ident);
1082		fprintf(outmk, "\\\n");
1083		fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) "
1084		    "$(%s_OBJS))",
1085		    p->ident, p->ident);
1086		fprintf(outmk, "\n");
1087		fprintf(outmk, "%s_clean:\n", p->ident);
1088		fprintf(outmk, "\t(cd $(%s_SRCDIR) && $(CRUNCHMAKE) $(BUILDOPTS) clean cleandepend)\n\n",
1089		    p->ident);
1090	} else {
1091		fprintf(outmk, "%s_make:\n", p->ident);
1092		fprintf(outmk, "\t@echo \"** cannot make objs for %s\"\n\n",
1093		    p->name);
1094	}
1095
1096	if (p->libs) {
1097		fprintf(outmk, "%s_LIBS=", p->ident);
1098		output_strlst(outmk, p->libs);
1099	}
1100
1101	fprintf(outmk, "%s_stub.c:\n", p->name);
1102	fprintf(outmk, "\techo \""
1103	    "int _crunched_%s_stub(int argc, char **argv, char **envp)"
1104	    "{return main(argc,argv,envp);}\" >%s_stub.c\n",
1105	    p->ident, p->name);
1106	fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)",
1107	    p->name, p->name, p->ident);
1108	if (p->libs)
1109		fprintf(outmk, " $(%s_LIBS)", p->ident);
1110
1111	fprintf(outmk, "\n");
1112	fprintf(outmk, "\t$(LD) -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)",
1113	    p->name, p->name, p->ident);
1114	if (p->libs)
1115		fprintf(outmk, " $(%s_LIBS)", p->ident);
1116	fprintf(outmk, "\n");
1117	fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident);
1118	for (lst = p->keeplist; lst != NULL; lst = lst->next)
1119		fprintf(outmk, "-k _%s ", lst->str);
1120	fprintf(outmk, "%s.lo\n", p->name);
1121}
1122
1123void
1124output_strlst(FILE *outf, strlst_t *lst)
1125{
1126	for (; lst != NULL; lst = lst->next)
1127		if ( strlen(lst->str) )
1128			fprintf(outf, " %s", lst->str);
1129	fprintf(outf, "\n");
1130}
1131
1132
1133/*
1134 * ========================================================================
1135 * general library routines
1136 *
1137 */
1138
1139void
1140status(const char *str)
1141{
1142	static int lastlen = 0;
1143	int len, spaces;
1144
1145	if (!verbose)
1146		return;
1147
1148	len = strlen(str);
1149	spaces = lastlen - len;
1150	if (spaces < 1)
1151		spaces = 1;
1152
1153	fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " ");
1154	fflush(stderr);
1155	lastlen = len;
1156}
1157
1158
1159void
1160out_of_memory(void)
1161{
1162	err(1, "%s: %d: out of memory, stopping", infilename, linenum);
1163}
1164
1165
1166void
1167add_string(strlst_t **listp, char *str)
1168{
1169	strlst_t *p1, *p2;
1170
1171	/* add to end, but be smart about dups */
1172
1173	for (p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next)
1174		if (!strcmp(p2->str, str))
1175			return;
1176
1177	p2 = malloc(sizeof(strlst_t));
1178	if (p2) {
1179		p2->next = NULL;
1180		p2->str = strdup(str);
1181    	}
1182	if (!p2 || !p2->str)
1183		out_of_memory();
1184
1185	if (p1 == NULL)
1186		*listp = p2;
1187	else
1188		p1->next = p2;
1189}
1190
1191int
1192subtract_strlst(strlst_t **lista, strlst_t **listb)
1193{
1194	int subtract_count = 0;
1195	strlst_t *p1;
1196	for (p1 = *listb; p1 != NULL; p1 = p1->next)
1197		if ( in_list(lista, p1->str) ) {
1198			warnx("Will compile library `%s' dynamically", p1->str);
1199			strcat(p1->str, "");
1200			subtract_count++;
1201		}
1202	return subtract_count;
1203}
1204
1205int
1206in_list(strlst_t **listp, char *str)
1207{
1208	strlst_t *p1;
1209	for (p1 = *listp; p1 != NULL; p1 = p1->next)
1210		if (!strcmp(p1->str, str))
1211			return 1;
1212	return 0;
1213}
1214
1215int
1216is_dir(const char *pathname)
1217{
1218	struct stat buf;
1219
1220	if (stat(pathname, &buf) == -1)
1221		return 0;
1222
1223	return S_ISDIR(buf.st_mode);
1224}
1225
1226int
1227is_nonempty_file(const char *pathname)
1228{
1229	struct stat buf;
1230
1231	if (stat(pathname, &buf) == -1)
1232		return 0;
1233
1234	return S_ISREG(buf.st_mode) && buf.st_size > 0;
1235}
1236