[unix-history] / usr / src / cmd / cc.c

static	char sccsid[] = "@(#)cc.c 4.1 10/1/80";
/*
 * cc - front end for C compiler
 */
#include <sys/types.h>
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include <dir.h>

char	*cpp = "/lib/cpp";
char	*ccom = "/lib/ccom";
char	*c2 = "/lib/c2";
char	*as = "/bin/as";
char	*ld = "/bin/ld";
char	*crt0 = "/lib/crt0.o";

char	tmp0[30];		/* big enough for /tmp/ctm%05.5d */
char	*tmp1, *tmp2, *tmp3, *tmp4, *tmp5;
char	*outfile;
char	*savestr(), *strspl(), *setsuf();
int	idexit();
char	**av, **clist, **llist, **plist;
int	cflag, eflag, gflag, oflag, pflag, sflag, wflag, Rflag, exflag, proflag;
char	*dflag;
int	exfail;
char	*chpass;
char	*npassname;

int	nc, nl, np, nxo, na;

#define	cunlink(s)	if (s) unlink(s)

main(argc, argv)
	char **argv;
{
	char *t;
	char *assource;
	int i, j, c;

	/* ld currently adds upto 5 args; 10 is room to spare */
	av = (char **)calloc(argc+10, sizeof (char **));
	clist = (char **)calloc(argc, sizeof (char **));
	llist = (char **)calloc(argc, sizeof (char **));
	plist = (char **)calloc(argc, sizeof (char **));
	for (i = 1; i < argc; i++) {
		if (*argv[i] == '-') switch (argv[i][1]) {

		case 'S':
			sflag++;
			cflag++;
			continue;
		case 'o':
			if (++i < argc) {
				outfile = argv[i];
				switch (getsuf(outfile)) {

				case 'c':
				case 'o':
					error("-o would overwrite %s",
					    outfile);
					exit(8);
				}
			}
			continue;
		case 'R':
			Rflag++;
			continue;
		case 'O':
			oflag++;
			continue;
		case 'p':
			proflag++;
			continue;
		case 'g':
			gflag++;
			continue;
		case 'w':
			wflag++;
			continue;
		case 'E':
			exflag++;
		case 'P':
			pflag++;
			if (argv[i][1]=='P')
				fprintf(stderr,
	"cc: warning: -P option obsolete; you should use -E instead\n");
			plist[np++] = argv[i];
		case 'c':
			cflag++;
			continue;
		case 'D':
		case 'I':
		case 'U':
		case 'C':
			plist[np++] = argv[i];
			continue;
		case 't':
			if (chpass)
				error("-t overwrites earlier option", 0);
			chpass = argv[i]+2;
			if (chpass[0]==0)
				chpass = "012p";
			continue;
		case 'B':
			if (npassname)
				error("-B overwrites earlier option", 0);
			npassname = argv[i]+2;
			if (npassname[0]==0)
				npassname = "/usr/c/o";
			continue;
		case 'd':
			dflag = argv[i];
			continue;
		}
		t = argv[i];
		c = getsuf(t);
		if (c=='c' || c=='s' || exflag) {
			clist[nc++] = t;
			t = setsuf(t, 'o');
		}
		if (nodup(llist, t)) {
			llist[nl++] = t;
			if (getsuf(t)=='o')
				nxo++;
		}
	}
	if (gflag) {
		if (oflag)
			fprintf(stderr, "cc: warning: -g disables -O\n");
		oflag = 0;
	}
	if (npassname && chpass ==0)
		chpass = "012p";
	if (chpass && npassname==0)
		npassname = "/usr/new";
	if (chpass)
	for (t=chpass; *t; t++) {
		switch (*t) {

		case '0':
			ccom = strspl(npassname, "ccom");
			continue;
		case '2':
			c2 = strspl(npassname, "c2");
			continue;
		case 'p':
			cpp = strspl(npassname, "cpp");
			continue;
		}
	}
	if (proflag)
		crt0 = "/lib/mcrt0.o";
	if (nc==0)
		goto nocom;
	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
		signal(SIGINT, idexit);
	if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
		signal(SIGTERM, idexit);
	if (pflag==0)
		sprintf(tmp0, "/tmp/ctm%05.5d", getpid());
	tmp1 = strspl(tmp0, "1");
	tmp2 = strspl(tmp0, "2");
	tmp3 = strspl(tmp0, "3");
	if (pflag==0)
		tmp4 = strspl(tmp0, "4");
	if (oflag)
		tmp5 = strspl(tmp0, "5");
	for (i=0; i<nc; i++) {
		if (nc > 1) {
			printf("%s:\n", clist[i]);
			fflush(stdout);
		}
		if (getsuf(clist[i]) == 's') {
			assource = clist[i];
			goto assemble;
		} else
			assource = tmp3;
		if (pflag)
			tmp4 = setsuf(clist[i], 'i');
		av[0] = "cpp"; av[1] = clist[i]; av[2] = exflag ? "-" : tmp4;
		na = 3;
		for (j = 0; j < np; j++)
			av[na++] = plist[j];
		av[na++] = 0;
		if (callsys(cpp, av)) {
			exfail++;
			eflag++;
		}
		if (pflag || exfail) {
			cflag++;
			continue;
		}
		if (sflag)
			assource = tmp3 = setsuf(clist[i], 's');
		av[0] = "ccom"; av[1] = tmp4; av[2] = oflag?tmp5:tmp3; na = 3;
		if (proflag)
			av[na++] = "-XP";
		if (gflag)
			av[na++] = "-Xg";
		if (wflag)
			av[na++] = "-w";
		av[na] = 0;
		if (callsys(ccom, av)) {
			cflag++;
			eflag++;
			continue;
		}
		if (oflag) {
			av[0] = "c2"; av[1] = tmp5; av[2] = tmp3; av[3] = 0;
			if (callsys(c2, av)) {
				unlink(tmp3);
				tmp3 = assource = tmp5;
			} else
				unlink(tmp5);
		}
		if (sflag)
			continue;
	assemble:
		cunlink(tmp1); cunlink(tmp2); cunlink(tmp4);
		av[0] = "as"; av[1] = "-o"; av[2] = setsuf(clist[i], 'o');
		na = 3;
		if (Rflag)
			av[na++] = "-R";
		if (dflag)
			av[na++] = dflag;
		av[na++] = assource;
		av[na] = 0;
		if (callsys(as, av) > 1) {
			cflag++;
			eflag++;
			continue;
		}
	}
nocom:
	if (cflag==0 && nl!=0) {
		i = 0;
		av[0] = "ld"; av[1] = "-X"; av[2] = crt0; na = 3;
		if (outfile) {
			av[na++] = "-o";
			av[na++] = outfile;
		}
		while (i < nl)
			av[na++] = llist[i++];
		if (gflag)
			av[na++] = "-lg";
		av[na++] = "-lc";
		av[na++] = 0;
		eflag |= callsys(ld, av);
		if (nc==1 && nxo==1 && eflag==0)
			unlink(setsuf(clist[0], 'o'));
	}
	dexit();
}

idexit()
{

	eflag = 100;
	dexit();
}

dexit()
{

	if (!pflag) {
		cunlink(tmp1);
		cunlink(tmp2);
		if (sflag==0)
			cunlink(tmp3);
		cunlink(tmp4);
		cunlink(tmp5);
	}
	exit(eflag);
}

error(s, x)
	char *s, *x;
{
	FILE *diag = exflag ? stderr : stdout;

	fprintf(diag, "cc: ");
	fprintf(diag, s, x);
	putc('\n', diag);
	exfail++;
	cflag++;
	eflag++;
}

getsuf(as)
char as[];
{
	register int c;
	register char *s;
	register int t;

	s = as;
	c = 0;
	while (t = *s++)
		if (t=='/')
			c = 0;
		else
			c++;
	s -= 3;
	if (c <= DIRSIZ && c > 2 && *s++ == '.')
		return (*s);
	return (0);
}

char *
setsuf(as, ch)
	char *as;
{
	register char *s, *s1;

	s = s1 = savestr(as);
	while (*s)
		if (*s++ == '/')
			s1 = s;
	s[-1] = ch;
	return (s1);
}

callsys(f, v)
	char *f, **v;
{
	int t, status;

	t = vfork();
	if (t == -1) {
		printf("No more processes\n");
		return (100);
	}
	if (t == 0) {
		execv(f, v);
		printf("Can't find %s\n", f);
		fflush(stdout);
		_exit(100);
	}
	while (t != wait(&status))
		;
	if ((t=(status&0377)) != 0 && t!=14) {
		if (t!=2) {
			printf("Fatal error in %s\n", f);
			eflag = 8;
		}
		dexit();
	}
	return ((status>>8) & 0377);
}

nodup(l, os)
	char **l, *os;
{
	register char *t, *s;
	register int c;

	s = os;
	if (getsuf(s) != 'o')
		return (1);
	while (t = *l++) {
		while (c = *s++)
			if (c != *t++)
				break;
		if (*t==0 && c==0)
			return (0);
		s = os;
	}
	return (1);
}

#define	NSAVETAB	1024
char	*savetab;
int	saveleft;

char *
savestr(cp)
	register char *cp;
{
	register int len;

	len = strlen(cp) + 1;
	if (len > saveleft) {
		saveleft = NSAVETAB;
		if (len > saveleft)
			saveleft = len;
		savetab = (char *)malloc(saveleft);
		if (savetab == 0) {
			fprintf(stderr, "ran out of memory (savestr)\n");
			exit(1);
		}
	}
	strncpy(savetab, cp, len);
	cp = savetab;
	savetab += len;
	saveleft -= len;
	return (cp);
}

char *
strspl(left, right)
	char *left, *right;
{
	char buf[BUFSIZ];

	strcpy(buf, left);
	strcat(buf, right);
	return (savestr(buf));
}
Commit	Line	Data
31cef89c	1	static char sccsid[] = "@(#)cc.c 4.1 10/1/80";
34d9b70e BJ	2	/*
	3	* cc - front end for C compiler
	4	*/
	5	#include <sys/types.h>
	6	#include <stdio.h>
	7	#include <ctype.h>
	8	#include <signal.h>
	9	#include <dir.h>
	10
c6802205 BJ	11	char *cpp = "/lib/cpp";
	12	char *ccom = "/lib/ccom";
	13	char *c2 = "/lib/c2";
	14	char *as = "/bin/as";
	15	char *ld = "/bin/ld";
	16	char *crt0 = "/lib/crt0.o";
34d9b70e BJ	17
	18	char tmp0[30]; /* big enough for /tmp/ctm%05.5d */
	19	char tmp1, tmp2, tmp3, tmp4, *tmp5;
	20	char *outfile;
	21	char savestr(), strspl(), *setsuf();
	22	int idexit();
	23	char av, clist, llist, plist;
b82dd559	24	int cflag, eflag, gflag, oflag, pflag, sflag, wflag, Rflag, exflag, proflag;
34d9b70e BJ	25	char *dflag;
	26	int exfail;
	27	char *chpass;
	28	char *npassname;
	29
	30	int nc, nl, np, nxo, na;
	31
	32	#define cunlink(s) if (s) unlink(s)
	33
	34	main(argc, argv)
	35	char **argv;
	36	{
	37	char *t;
	38	char *assource;
	39	int i, j, c;
	40
	41	/* ld currently adds upto 5 args; 10 is room to spare */
	42	av = (char )calloc(argc+10, sizeof (char ));
	43	clist = (char )calloc(argc, sizeof (char ));
	44	llist = (char )calloc(argc, sizeof (char ));
	45	plist = (char )calloc(argc, sizeof (char ));
	46	for (i = 1; i < argc; i++) {
	47	if (*argv[i] == '-') switch (argv[i][1]) {
	48
34d9b70e BJ	49	case 'S':
	50	sflag++;
	51	cflag++;
	52	continue;
	53	case 'o':
	54	if (++i < argc) {
	55	outfile = argv[i];
	56	switch (getsuf(outfile)) {
	57
	58	case 'c':
	59	case 'o':
	60	error("-o would overwrite %s",
	61	outfile);
	62	exit(8);
	63	}
	64	}
	65	continue;
b82dd559 BJ	66	case 'R':
	67	Rflag++;
	68	continue;
34d9b70e BJ	69	case 'O':
	70	oflag++;
	71	continue;
	72	case 'p':
	73	proflag++;
	74	continue;
	75	case 'g':
	76	gflag++;
	77	continue;
	78	case 'w':
	79	wflag++;
	80	continue;
	81	case 'E':
	82	exflag++;
	83	case 'P':
	84	pflag++;
	85	if (argv[i][1]=='P')
	86	fprintf(stderr,
	87	"cc: warning: -P option obsolete; you should use -E instead\n");
	88	plist[np++] = argv[i];
	89	case 'c':
	90	cflag++;
	91	continue;
	92	case 'D':
	93	case 'I':
	94	case 'U':
	95	case 'C':
	96	plist[np++] = argv[i];
	97	continue;
	98	case 't':
	99	if (chpass)
	100	error("-t overwrites earlier option", 0);
	101	chpass = argv[i]+2;
	102	if (chpass[0]==0)
	103	chpass = "012p";
	104	continue;
	105	case 'B':
	106	if (npassname)
	107	error("-B overwrites earlier option", 0);
	108	npassname = argv[i]+2;
	109	if (npassname[0]==0)
	110	npassname = "/usr/c/o";
	111	continue;
	112	case 'd':
	113	dflag = argv[i];
	114	continue;
	115	}
	116	t = argv[i];
	117	c = getsuf(t);
	118	if (c=='c' \|\| c=='s' \|\| exflag) {
	119	clist[nc++] = t;
	120	t = setsuf(t, 'o');
	121	}
	122	if (nodup(llist, t)) {
	123	llist[nl++] = t;
	124	if (getsuf(t)=='o')
	125	nxo++;
	126	}
	127	}
	128	if (gflag) {
	129	if (oflag)
	130	fprintf(stderr, "cc: warning: -g disables -O\n");
	131	oflag = 0;
	132	}
133	if (npassname && chpass ==0)
134	chpass = "012p";
135	if (chpass && npassname==0)
c6802205	136	npassname = "/usr/new";
34d9b70e BJ	137	if (chpass)
	138	for (t=chpass; *t; t++) {
	139	switch (*t) {
	140
	141	case '0':
	142	ccom = strspl(npassname, "ccom");
	143	continue;
	144	case '2':
	145	c2 = strspl(npassname, "c2");
	146	continue;
	147	case 'p':
	148	cpp = strspl(npassname, "cpp");
	149	continue;
	150	}
	151	}
	152	if (proflag)
c6802205	153	crt0 = "/lib/mcrt0.o";
34d9b70e BJ	154	if (nc==0)
	155	goto nocom;
	156	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
	157	signal(SIGINT, idexit);
	158	if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
	159	signal(SIGTERM, idexit);
	160	if (pflag==0)
	161	sprintf(tmp0, "/tmp/ctm%05.5d", getpid());
	162	tmp1 = strspl(tmp0, "1");
	163	tmp2 = strspl(tmp0, "2");
	164	tmp3 = strspl(tmp0, "3");
	165	if (pflag==0)
	166	tmp4 = strspl(tmp0, "4");
	167	if (oflag)
	168	tmp5 = strspl(tmp0, "5");
	169	for (i=0; i<nc; i++) {
	170	if (nc > 1) {
	171	printf("%s:\n", clist[i]);
	172	fflush(stdout);
	173	}
	174	if (getsuf(clist[i]) == 's') {
	175	assource = clist[i];
	176	goto assemble;
	177	} else
	178	assource = tmp3;
	179	if (pflag)
	180	tmp4 = setsuf(clist[i], 'i');
	181	av[0] = "cpp"; av[1] = clist[i]; av[2] = exflag ? "-" : tmp4;
	182	na = 3;
	183	for (j = 0; j < np; j++)
	184	av[na++] = plist[j];
	185	av[na++] = 0;
	186	if (callsys(cpp, av)) {
	187	exfail++;
	188	eflag++;
	189	}
	190	if (pflag \|\| exfail) {
	191	cflag++;
	192	continue;
	193	}
	194	if (sflag)
	195	assource = tmp3 = setsuf(clist[i], 's');
	196	av[0] = "ccom"; av[1] = tmp4; av[2] = oflag?tmp5:tmp3; na = 3;
	197	if (proflag)
	198	av[na++] = "-XP";
	199	if (gflag)
	200	av[na++] = "-Xg";
	201	if (wflag)
	202	av[na++] = "-w";
	203	av[na] = 0;
	204	if (callsys(ccom, av)) {
	205	cflag++;
	206	eflag++;
	207	continue;
	208	}
	209	if (oflag) {
	210	av[0] = "c2"; av[1] = tmp5; av[2] = tmp3; av[3] = 0;
	211	if (callsys(c2, av)) {
	212	unlink(tmp3);
	213	tmp3 = assource = tmp5;
	214	} else
	215	unlink(tmp5);
	216	}
	217	if (sflag)
218	continue;
219	assemble:
220	cunlink(tmp1); cunlink(tmp2); cunlink(tmp4);
221	av[0] = "as"; av[1] = "-o"; av[2] = setsuf(clist[i], 'o');
b82dd559 BJ	222	na = 3;
	223	if (Rflag)
	224	av[na++] = "-R";
34d9b70e BJ	225	if (dflag)
34d9b70e BJ	226	av[na++] = dflag;
b82dd559	227	av[na++] = assource;
34d9b70e BJ	228	av[na] = 0;
	229	if (callsys(as, av) > 1) {
	230	cflag++;
	231	eflag++;
	232	continue;
	233	}
	234	}
	235	nocom:
	236	if (cflag==0 && nl!=0) {
	237	i = 0;
	238	av[0] = "ld"; av[1] = "-X"; av[2] = crt0; na = 3;
	239	if (outfile) {
	240	av[na++] = "-o";
	241	av[na++] = outfile;
	242	}
	243	while (i < nl)
	244	av[na++] = llist[i++];
	245	if (gflag)
	246	av[na++] = "-lg";
	247	av[na++] = "-lc";
	248	av[na++] = 0;
	249	eflag \|= callsys(ld, av);
	250	if (nc==1 && nxo==1 && eflag==0)
	251	unlink(setsuf(clist[0], 'o'));
	252	}
	253	dexit();
	254	}
	255
	256	idexit()
	257	{
	258
	259	eflag = 100;
	260	dexit();
	261	}
	262
	263	dexit()
	264	{
	265
	266	if (!pflag) {
	267	cunlink(tmp1);
	268	cunlink(tmp2);
	269	if (sflag==0)
	270	cunlink(tmp3);
	271	cunlink(tmp4);
	272	cunlink(tmp5);
	273	}
	274	exit(eflag);
	275	}
	276
	277	error(s, x)
	278	char s, x;
	279	{
	280	FILE *diag = exflag ? stderr : stdout;
	281
	282	fprintf(diag, "cc: ");
	283	fprintf(diag, s, x);
	284	putc('\n', diag);
	285	exfail++;
	286	cflag++;
	287	eflag++;
	288	}
	289
	290	getsuf(as)
	291	char as[];
292	{
293	register int c;
294	register char *s;
295	register int t;
296
297	s = as;
298	c = 0;
299	while (t = *s++)
300	if (t=='/')
301	c = 0;
302	else
303	c++;
304	s -= 3;
305	if (c <= DIRSIZ && c > 2 && *s++ == '.')
306	return (*s);
307	return (0);
308	}
309
310	char *
311	setsuf(as, ch)
312	char *as;
313	{
314	register char s, s1;
315
316	s = s1 = savestr(as);
317	while (*s)
318	if (*s++ == '/')
319	s1 = s;
320	s[-1] = ch;
321	return (s1);
322	}
323
324	callsys(f, v)
325	char f, *v;
326	{
327	int t, status;
328
329	t = vfork();
330	if (t == -1) {
331	printf("No more processes\n");
332	return (100);
333	}
334	if (t == 0) {
335	execv(f, v);
336	printf("Can't find %s\n", f);
337	fflush(stdout);
338	_exit(100);
339	}
340	while (t != wait(&status))
341	;
342	if ((t=(status&0377)) != 0 && t!=14) {
343	if (t!=2) {
344	printf("Fatal error in %s\n", f);
345	eflag = 8;
346	}
347	dexit();
348	}
349	return ((status>>8) & 0377);
350	}
351
352	nodup(l, os)
353	char *l, os;
354	{
355	register char t, s;
356	register int c;
357
358	s = os;
359	if (getsuf(s) != 'o')
360	return (1);
361	while (t = *l++) {
362	while (c = *s++)
363	if (c != *t++)
364	break;
365	if (*t==0 && c==0)
366	return (0);
367	s = os;
368	}
369	return (1);
370	}
371
372	#define NSAVETAB 1024
373	char *savetab;
374	int saveleft;
375
376	char *
377	savestr(cp)
378	register char *cp;
379	{
380	register int len;
381
382	len = strlen(cp) + 1;
383	if (len > saveleft) {
384	saveleft = NSAVETAB;
385	if (len > saveleft)
386	saveleft = len;
387	savetab = (char *)malloc(saveleft);
388	if (savetab == 0) {
389	fprintf(stderr, "ran out of memory (savestr)\n");
390	exit(1);
391	}
392	}
393	strncpy(savetab, cp, len);
394	cp = savetab;
395	savetab += len;
396	saveleft -= len;
397	return (cp);
398	}
399
400	char *
401	strspl(left, right)
402	char left, right;
403	{
404	char buf[BUFSIZ];
405
406	strcpy(buf, left);
407	strcat(buf, right);
408	return (savestr(buf));
409	}