xref: /freebsd/contrib/bmake/compat.c (revision 0b3105a37d7adcadcb720112fed4dc4e8040be99)
1 /*	$NetBSD: compat.c,v 1.101 2015/10/11 04:51:24 sjg Exp $	*/
2 
3 /*
4  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Adam de Boor.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 /*
36  * Copyright (c) 1988, 1989 by Adam de Boor
37  * Copyright (c) 1989 by Berkeley Softworks
38  * All rights reserved.
39  *
40  * This code is derived from software contributed to Berkeley by
41  * Adam de Boor.
42  *
43  * Redistribution and use in source and binary forms, with or without
44  * modification, are permitted provided that the following conditions
45  * are met:
46  * 1. Redistributions of source code must retain the above copyright
47  *    notice, this list of conditions and the following disclaimer.
48  * 2. Redistributions in binary form must reproduce the above copyright
49  *    notice, this list of conditions and the following disclaimer in the
50  *    documentation and/or other materials provided with the distribution.
51  * 3. All advertising materials mentioning features or use of this software
52  *    must display the following acknowledgement:
53  *	This product includes software developed by the University of
54  *	California, Berkeley and its contributors.
55  * 4. Neither the name of the University nor the names of its contributors
56  *    may be used to endorse or promote products derived from this software
57  *    without specific prior written permission.
58  *
59  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69  * SUCH DAMAGE.
70  */
71 
72 #ifndef MAKE_NATIVE
73 static char rcsid[] = "$NetBSD: compat.c,v 1.101 2015/10/11 04:51:24 sjg Exp $";
74 #else
75 #include <sys/cdefs.h>
76 #ifndef lint
77 #if 0
78 static char sccsid[] = "@(#)compat.c	8.2 (Berkeley) 3/19/94";
79 #else
80 __RCSID("$NetBSD: compat.c,v 1.101 2015/10/11 04:51:24 sjg Exp $");
81 #endif
82 #endif /* not lint */
83 #endif
84 
85 /*-
86  * compat.c --
87  *	The routines in this file implement the full-compatibility
88  *	mode of PMake. Most of the special functionality of PMake
89  *	is available in this mode. Things not supported:
90  *	    - different shells.
91  *	    - friendly variable substitution.
92  *
93  * Interface:
94  *	Compat_Run	    Initialize things for this module and recreate
95  *	    	  	    thems as need creatin'
96  */
97 
98 #ifdef HAVE_CONFIG_H
99 # include   "config.h"
100 #endif
101 #include    <sys/types.h>
102 #include    <sys/stat.h>
103 #include    "wait.h"
104 
105 #include    <ctype.h>
106 #include    <errno.h>
107 #include    <signal.h>
108 #include    <stdio.h>
109 
110 #include    "make.h"
111 #include    "hash.h"
112 #include    "dir.h"
113 #include    "job.h"
114 #include    "metachar.h"
115 #include    "pathnames.h"
116 
117 
118 static GNode	    *curTarg = NULL;
119 static GNode	    *ENDNode;
120 static void CompatInterrupt(int);
121 
122 /*-
123  *-----------------------------------------------------------------------
124  * CompatInterrupt --
125  *	Interrupt the creation of the current target and remove it if
126  *	it ain't precious.
127  *
128  * Results:
129  *	None.
130  *
131  * Side Effects:
132  *	The target is removed and the process exits. If .INTERRUPT exists,
133  *	its commands are run first WITH INTERRUPTS IGNORED..
134  *
135  *-----------------------------------------------------------------------
136  */
137 static void
138 CompatInterrupt(int signo)
139 {
140     GNode   *gn;
141 
142     if ((curTarg != NULL) && !Targ_Precious (curTarg)) {
143 	char	  *p1;
144 	char 	  *file = Var_Value(TARGET, curTarg, &p1);
145 
146 	if (!noExecute && eunlink(file) != -1) {
147 	    Error("*** %s removed", file);
148 	}
149 	if (p1)
150 	    free(p1);
151 
152 	/*
153 	 * Run .INTERRUPT only if hit with interrupt signal
154 	 */
155 	if (signo == SIGINT) {
156 	    gn = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
157 	    if (gn != NULL) {
158 		Compat_Make(gn, gn);
159 	    }
160 	}
161 
162     }
163     if (signo == SIGQUIT)
164 	_exit(signo);
165     bmake_signal(signo, SIG_DFL);
166     kill(myPid, signo);
167 }
168 
169 /*-
170  *-----------------------------------------------------------------------
171  * CompatRunCommand --
172  *	Execute the next command for a target. If the command returns an
173  *	error, the node's made field is set to ERROR and creation stops.
174  *
175  * Input:
176  *	cmdp		Command to execute
177  *	gnp		Node from which the command came
178  *
179  * Results:
180  *	0 if the command succeeded, 1 if an error occurred.
181  *
182  * Side Effects:
183  *	The node's 'made' field may be set to ERROR.
184  *
185  *-----------------------------------------------------------------------
186  */
187 int
188 CompatRunCommand(void *cmdp, void *gnp)
189 {
190     char    	  *cmdStart;	/* Start of expanded command */
191     char 	  *cp, *bp;
192     Boolean 	  silent,   	/* Don't print command */
193 	    	  doIt;		/* Execute even if -n */
194     volatile Boolean errCheck; 	/* Check errors */
195     WAIT_T 	  reason;   	/* Reason for child's death */
196     int	    	  status;   	/* Description of child's death */
197     pid_t	  cpid;	    	/* Child actually found */
198     pid_t	  retstat;    	/* Result of wait */
199     LstNode 	  cmdNode;  	/* Node where current command is located */
200     const char  ** volatile av;	/* Argument vector for thing to exec */
201     char	** volatile mav;/* Copy of the argument vector for freeing */
202     int	    	  argc;	    	/* Number of arguments in av or 0 if not
203 				 * dynamically allocated */
204     Boolean 	  local;    	/* TRUE if command should be executed
205 				 * locally */
206     Boolean 	  useShell;    	/* TRUE if command should be executed
207 				 * using a shell */
208     char	  * volatile cmd = (char *)cmdp;
209     GNode	  *gn = (GNode *)gnp;
210 
211     silent = gn->type & OP_SILENT;
212     errCheck = !(gn->type & OP_IGNORE);
213     doIt = FALSE;
214 
215     cmdNode = Lst_Member(gn->commands, cmd);
216     cmdStart = Var_Subst(NULL, cmd, gn, FALSE, TRUE);
217 
218     /*
219      * brk_string will return an argv with a NULL in av[0], thus causing
220      * execvp to choke and die horribly. Besides, how can we execute a null
221      * command? In any case, we warn the user that the command expanded to
222      * nothing (is this the right thing to do?).
223      */
224 
225     if (*cmdStart == '\0') {
226 	free(cmdStart);
227 	return(0);
228     }
229     cmd = cmdStart;
230     Lst_Replace(cmdNode, cmdStart);
231 
232     if ((gn->type & OP_SAVE_CMDS) && (gn != ENDNode)) {
233 	(void)Lst_AtEnd(ENDNode->commands, cmdStart);
234 	return(0);
235     }
236     if (strcmp(cmdStart, "...") == 0) {
237 	gn->type |= OP_SAVE_CMDS;
238 	return(0);
239     }
240 
241     while ((*cmd == '@') || (*cmd == '-') || (*cmd == '+')) {
242 	switch (*cmd) {
243 	case '@':
244 	    silent = DEBUG(LOUD) ? FALSE : TRUE;
245 	    break;
246 	case '-':
247 	    errCheck = FALSE;
248 	    break;
249 	case '+':
250 	    doIt = TRUE;
251 	    if (!shellName)		/* we came here from jobs */
252 		Shell_Init();
253 	    break;
254 	}
255 	cmd++;
256     }
257 
258     while (isspace((unsigned char)*cmd))
259 	cmd++;
260 
261     /*
262      * If we did not end up with a command, just skip it.
263      */
264     if (!*cmd)
265 	return (0);
266 
267 #if !defined(MAKE_NATIVE)
268     /*
269      * In a non-native build, the host environment might be weird enough
270      * that it's necessary to go through a shell to get the correct
271      * behaviour.  Or perhaps the shell has been replaced with something
272      * that does extra logging, and that should not be bypassed.
273      */
274     useShell = TRUE;
275 #else
276     /*
277      * Search for meta characters in the command. If there are no meta
278      * characters, there's no need to execute a shell to execute the
279      * command.
280      *
281      * Additionally variable assignments and empty commands
282      * go to the shell. Therefore treat '=' and ':' like shell
283      * meta characters as documented in make(1).
284      */
285 
286     useShell = needshell(cmd, FALSE);
287 #endif
288 
289     /*
290      * Print the command before echoing if we're not supposed to be quiet for
291      * this one. We also print the command if -n given.
292      */
293     if (!silent || NoExecute(gn)) {
294 	printf("%s\n", cmd);
295 	fflush(stdout);
296     }
297 
298     /*
299      * If we're not supposed to execute any commands, this is as far as
300      * we go...
301      */
302     if (!doIt && NoExecute(gn)) {
303 	return (0);
304     }
305     if (DEBUG(JOB))
306 	fprintf(debug_file, "Execute: '%s'\n", cmd);
307 
308 again:
309     if (useShell) {
310 	/*
311 	 * We need to pass the command off to the shell, typically
312 	 * because the command contains a "meta" character.
313 	 */
314 	static const char *shargv[5];
315 	int shargc;
316 
317 	shargc = 0;
318 	shargv[shargc++] = shellPath;
319 	/*
320 	 * The following work for any of the builtin shell specs.
321 	 */
322 	if (errCheck && shellErrFlag) {
323 	    shargv[shargc++] = shellErrFlag;
324 	}
325 	if (DEBUG(SHELL))
326 		shargv[shargc++] = "-xc";
327 	else
328 		shargv[shargc++] = "-c";
329 	shargv[shargc++] = cmd;
330 	shargv[shargc++] = NULL;
331 	av = shargv;
332 	argc = 0;
333 	bp = NULL;
334 	mav = NULL;
335     } else {
336 	/*
337 	 * No meta-characters, so no need to exec a shell. Break the command
338 	 * into words to form an argument vector we can execute.
339 	 */
340 	mav = brk_string(cmd, &argc, TRUE, &bp);
341 	if (mav == NULL) {
342 		useShell = 1;
343 		goto again;
344 	}
345 	av = (void *)mav;
346     }
347 
348     local = TRUE;
349 
350 #ifdef USE_META
351     if (useMeta) {
352 	meta_compat_start();
353     }
354 #endif
355 
356     /*
357      * Fork and execute the single command. If the fork fails, we abort.
358      */
359     cpid = vFork();
360     if (cpid < 0) {
361 	Fatal("Could not fork");
362     }
363     if (cpid == 0) {
364 	Var_ExportVars();
365 #ifdef USE_META
366 	if (useMeta) {
367 	    meta_compat_child();
368 	}
369 #endif
370 	if (local)
371 	    (void)execvp(av[0], (char *const *)UNCONST(av));
372 	else
373 	    (void)execv(av[0], (char *const *)UNCONST(av));
374 	execError("exec", av[0]);
375 	_exit(1);
376     }
377     if (mav)
378 	free(mav);
379     if (bp)
380 	free(bp);
381     Lst_Replace(cmdNode, NULL);
382 
383 #ifdef USE_META
384     if (useMeta) {
385 	meta_compat_parent();
386     }
387 #endif
388 
389     /*
390      * The child is off and running. Now all we can do is wait...
391      */
392     while (1) {
393 
394 	while ((retstat = wait(&reason)) != cpid) {
395 	    if (retstat > 0)
396 		JobReapChild(retstat, reason, FALSE); /* not ours? */
397 	    if (retstat == -1 && errno != EINTR) {
398 		break;
399 	    }
400 	}
401 
402 	if (retstat > -1) {
403 	    if (WIFSTOPPED(reason)) {
404 		status = WSTOPSIG(reason);		/* stopped */
405 	    } else if (WIFEXITED(reason)) {
406 		status = WEXITSTATUS(reason);		/* exited */
407 #if defined(USE_META) && defined(USE_FILEMON_ONCE)
408 		if (useMeta) {
409 		    meta_cmd_finish(NULL);
410 		}
411 #endif
412 		if (status != 0) {
413 		    if (DEBUG(ERROR)) {
414 		        fprintf(debug_file, "\n*** Failed target:  %s\n*** Failed command: ",
415 			    gn->name);
416 		        for (cp = cmd; *cp; ) {
417     			    if (isspace((unsigned char)*cp)) {
418 				fprintf(debug_file, " ");
419 			        while (isspace((unsigned char)*cp))
420 				    cp++;
421 			    } else {
422 				fprintf(debug_file, "%c", *cp);
423 			        cp++;
424 			    }
425 		        }
426 			fprintf(debug_file, "\n");
427 		    }
428 		    printf("*** Error code %d", status);
429 		}
430 	    } else {
431 		status = WTERMSIG(reason);		/* signaled */
432 		printf("*** Signal %d", status);
433 	    }
434 
435 
436 	    if (!WIFEXITED(reason) || (status != 0)) {
437 		if (errCheck) {
438 #ifdef USE_META
439 		    if (useMeta) {
440 			meta_job_error(NULL, gn, 0, status);
441 		    }
442 #endif
443 		    gn->made = ERROR;
444 		    if (keepgoing) {
445 			/*
446 			 * Abort the current target, but let others
447 			 * continue.
448 			 */
449 			printf(" (continuing)\n");
450 		    }
451 		} else {
452 		    /*
453 		     * Continue executing commands for this target.
454 		     * If we return 0, this will happen...
455 		     */
456 		    printf(" (ignored)\n");
457 		    status = 0;
458 		}
459 	    }
460 	    break;
461 	} else {
462 	    Fatal("error in wait: %d: %s", retstat, strerror(errno));
463 	    /*NOTREACHED*/
464 	}
465     }
466     free(cmdStart);
467 
468     return (status);
469 }
470 
471 /*-
472  *-----------------------------------------------------------------------
473  * Compat_Make --
474  *	Make a target.
475  *
476  * Input:
477  *	gnp		The node to make
478  *	pgnp		Parent to abort if necessary
479  *
480  * Results:
481  *	0
482  *
483  * Side Effects:
484  *	If an error is detected and not being ignored, the process exits.
485  *
486  *-----------------------------------------------------------------------
487  */
488 int
489 Compat_Make(void *gnp, void *pgnp)
490 {
491     GNode *gn = (GNode *)gnp;
492     GNode *pgn = (GNode *)pgnp;
493 
494     if (!shellName)		/* we came here from jobs */
495 	Shell_Init();
496     if (gn->made == UNMADE && (gn == pgn || (pgn->type & OP_MADE) == 0)) {
497 	/*
498 	 * First mark ourselves to be made, then apply whatever transformations
499 	 * the suffix module thinks are necessary. Once that's done, we can
500 	 * descend and make all our children. If any of them has an error
501 	 * but the -k flag was given, our 'make' field will be set FALSE again.
502 	 * This is our signal to not attempt to do anything but abort our
503 	 * parent as well.
504 	 */
505 	gn->flags |= REMAKE;
506 	gn->made = BEINGMADE;
507 	if ((gn->type & OP_MADE) == 0)
508 	    Suff_FindDeps(gn);
509 	Lst_ForEach(gn->children, Compat_Make, gn);
510 	if ((gn->flags & REMAKE) == 0) {
511 	    gn->made = ABORTED;
512 	    pgn->flags &= ~REMAKE;
513 	    goto cohorts;
514 	}
515 
516 	if (Lst_Member(gn->iParents, pgn) != NULL) {
517 	    char *p1;
518 	    Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
519 	    if (p1)
520 		free(p1);
521 	}
522 
523 	/*
524 	 * All the children were made ok. Now cmgn->mtime contains the
525 	 * modification time of the newest child, we need to find out if we
526 	 * exist and when we were modified last. The criteria for datedness
527 	 * are defined by the Make_OODate function.
528 	 */
529 	if (DEBUG(MAKE)) {
530 	    fprintf(debug_file, "Examining %s...", gn->name);
531 	}
532 	if (! Make_OODate(gn)) {
533 	    gn->made = UPTODATE;
534 	    if (DEBUG(MAKE)) {
535 		fprintf(debug_file, "up-to-date.\n");
536 	    }
537 	    goto cohorts;
538 	} else if (DEBUG(MAKE)) {
539 	    fprintf(debug_file, "out-of-date.\n");
540 	}
541 
542 	/*
543 	 * If the user is just seeing if something is out-of-date, exit now
544 	 * to tell him/her "yes".
545 	 */
546 	if (queryFlag) {
547 	    exit(1);
548 	}
549 
550 	/*
551 	 * We need to be re-made. We also have to make sure we've got a $?
552 	 * variable. To be nice, we also define the $> variable using
553 	 * Make_DoAllVar().
554 	 */
555 	Make_DoAllVar(gn);
556 
557 	/*
558 	 * Alter our type to tell if errors should be ignored or things
559 	 * should not be printed so CompatRunCommand knows what to do.
560 	 */
561 	if (Targ_Ignore(gn)) {
562 	    gn->type |= OP_IGNORE;
563 	}
564 	if (Targ_Silent(gn)) {
565 	    gn->type |= OP_SILENT;
566 	}
567 
568 	if (Job_CheckCommands(gn, Fatal)) {
569 	    /*
570 	     * Our commands are ok, but we still have to worry about the -t
571 	     * flag...
572 	     */
573 	    if (!touchFlag || (gn->type & OP_MAKE)) {
574 		curTarg = gn;
575 #ifdef USE_META
576 		if (useMeta && !NoExecute(gn)) {
577 		    meta_job_start(NULL, gn);
578 		}
579 #endif
580 		Lst_ForEach(gn->commands, CompatRunCommand, gn);
581 		curTarg = NULL;
582 	    } else {
583 		Job_Touch(gn, gn->type & OP_SILENT);
584 	    }
585 	} else {
586 	    gn->made = ERROR;
587 	}
588 #ifdef USE_META
589 	if (useMeta && !NoExecute(gn)) {
590 	    meta_job_finish(NULL);
591 	}
592 #endif
593 
594 	if (gn->made != ERROR) {
595 	    /*
596 	     * If the node was made successfully, mark it so, update
597 	     * its modification time and timestamp all its parents. Note
598 	     * that for .ZEROTIME targets, the timestamping isn't done.
599 	     * This is to keep its state from affecting that of its parent.
600 	     */
601 	    gn->made = MADE;
602 	    pgn->flags |= Make_Recheck(gn) == 0 ? FORCE : 0;
603 	    if (!(gn->type & OP_EXEC)) {
604 		pgn->flags |= CHILDMADE;
605 		Make_TimeStamp(pgn, gn);
606 	    }
607 	} else if (keepgoing) {
608 	    pgn->flags &= ~REMAKE;
609 	} else {
610 	    PrintOnError(gn, "\n\nStop.");
611 	    exit(1);
612 	}
613     } else if (gn->made == ERROR) {
614 	/*
615 	 * Already had an error when making this beastie. Tell the parent
616 	 * to abort.
617 	 */
618 	pgn->flags &= ~REMAKE;
619     } else {
620 	if (Lst_Member(gn->iParents, pgn) != NULL) {
621 	    char *p1;
622 	    Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
623 	    if (p1)
624 		free(p1);
625 	}
626 	switch(gn->made) {
627 	    case BEINGMADE:
628 		Error("Graph cycles through %s", gn->name);
629 		gn->made = ERROR;
630 		pgn->flags &= ~REMAKE;
631 		break;
632 	    case MADE:
633 		if ((gn->type & OP_EXEC) == 0) {
634 		    pgn->flags |= CHILDMADE;
635 		    Make_TimeStamp(pgn, gn);
636 		}
637 		break;
638 	    case UPTODATE:
639 		if ((gn->type & OP_EXEC) == 0) {
640 		    Make_TimeStamp(pgn, gn);
641 		}
642 		break;
643 	    default:
644 		break;
645 	}
646     }
647 
648 cohorts:
649     Lst_ForEach(gn->cohorts, Compat_Make, pgnp);
650     return (0);
651 }
652 
653 /*-
654  *-----------------------------------------------------------------------
655  * Compat_Run --
656  *	Initialize this mode and start making.
657  *
658  * Input:
659  *	targs		List of target nodes to re-create
660  *
661  * Results:
662  *	None.
663  *
664  * Side Effects:
665  *	Guess what?
666  *
667  *-----------------------------------------------------------------------
668  */
669 void
670 Compat_Run(Lst targs)
671 {
672     GNode   	  *gn = NULL;/* Current root target */
673     int	    	  errors;   /* Number of targets not remade due to errors */
674 
675     if (!shellName)
676 	Shell_Init();
677 
678     if (bmake_signal(SIGINT, SIG_IGN) != SIG_IGN) {
679 	bmake_signal(SIGINT, CompatInterrupt);
680     }
681     if (bmake_signal(SIGTERM, SIG_IGN) != SIG_IGN) {
682 	bmake_signal(SIGTERM, CompatInterrupt);
683     }
684     if (bmake_signal(SIGHUP, SIG_IGN) != SIG_IGN) {
685 	bmake_signal(SIGHUP, CompatInterrupt);
686     }
687     if (bmake_signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
688 	bmake_signal(SIGQUIT, CompatInterrupt);
689     }
690 
691     ENDNode = Targ_FindNode(".END", TARG_CREATE);
692     ENDNode->type = OP_SPECIAL;
693     /*
694      * If the user has defined a .BEGIN target, execute the commands attached
695      * to it.
696      */
697     if (!queryFlag) {
698 	gn = Targ_FindNode(".BEGIN", TARG_NOCREATE);
699 	if (gn != NULL) {
700 	    Compat_Make(gn, gn);
701             if (gn->made == ERROR) {
702                 PrintOnError(gn, "\n\nStop.");
703                 exit(1);
704             }
705 	}
706     }
707 
708     /*
709      * Expand .USE nodes right now, because they can modify the structure
710      * of the tree.
711      */
712     Make_ExpandUse(targs);
713 
714     /*
715      * For each entry in the list of targets to create, call Compat_Make on
716      * it to create the thing. Compat_Make will leave the 'made' field of gn
717      * in one of several states:
718      *	    UPTODATE	    gn was already up-to-date
719      *	    MADE  	    gn was recreated successfully
720      *	    ERROR 	    An error occurred while gn was being created
721      *	    ABORTED	    gn was not remade because one of its inferiors
722      *	    	  	    could not be made due to errors.
723      */
724     errors = 0;
725     while (!Lst_IsEmpty (targs)) {
726 	gn = (GNode *)Lst_DeQueue(targs);
727 	Compat_Make(gn, gn);
728 
729 	if (gn->made == UPTODATE) {
730 	    printf("`%s' is up to date.\n", gn->name);
731 	} else if (gn->made == ABORTED) {
732 	    printf("`%s' not remade because of errors.\n", gn->name);
733 	    errors += 1;
734 	}
735     }
736 
737     /*
738      * If the user has defined a .END target, run its commands.
739      */
740     if (errors == 0) {
741 	Compat_Make(ENDNode, ENDNode);
742 	if (gn->made == ERROR) {
743 	    PrintOnError(gn, "\n\nStop.");
744 	    exit(1);
745 	}
746     }
747 }
748