1/*	$NetBSD: compat.c,v 1.93 2013/09/02 19:26:42 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
73static char rcsid[] = "$NetBSD: compat.c,v 1.93 2013/09/02 19:26:42 sjg Exp $";
74#else
75#include <sys/cdefs.h>
76#ifndef lint
77#if 0
78static char sccsid[] = "@(#)compat.c	8.2 (Berkeley) 3/19/94";
79#else
80__RCSID("$NetBSD: compat.c,v 1.93 2013/09/02 19:26:42 sjg Exp $");
81#endif
82#endif /* not lint */
83#endif
84
85/*-
86 * compat.c --
87 *	The routines in this file implement the full-compatibility
88 *	mode of PMake. Most of the special functionality of PMake
89 *	is available in this mode. Things not supported:
90 *	    - different shells.
91 *	    - friendly variable substitution.
92 *
93 * Interface:
94 *	Compat_Run	    Initialize things for this module and recreate
95 *	    	  	    thems as need creatin'
96 */
97
98#ifdef HAVE_CONFIG_H
99# include   "config.h"
100#endif
101#include    <sys/types.h>
102#include    <sys/stat.h>
103#include    "wait.h"
104
105#include    <ctype.h>
106#include    <errno.h>
107#include    <signal.h>
108#include    <stdio.h>
109
110#include    "make.h"
111#include    "hash.h"
112#include    "dir.h"
113#include    "job.h"
114#include    "pathnames.h"
115
116/*
117 * The following array is used to make a fast determination of which
118 * characters are interpreted specially by the shell.  If a command
119 * contains any of these characters, it is executed by the shell, not
120 * directly by us.
121 */
122
123static char 	    meta[256];
124
125static GNode	    *curTarg = NULL;
126static GNode	    *ENDNode;
127static void CompatInterrupt(int);
128
129static void
130Compat_Init(void)
131{
132    const char *cp;
133
134    Shell_Init();		/* setup default shell */
135
136    for (cp = "#=|^(){};&<>*?[]:$`\\\n"; *cp != '\0'; cp++) {
137	meta[(unsigned char) *cp] = 1;
138    }
139    /*
140     * The null character serves as a sentinel in the string.
141     */
142    meta[0] = 1;
143}
144
145/*-
146 *-----------------------------------------------------------------------
147 * CompatInterrupt --
148 *	Interrupt the creation of the current target and remove it if
149 *	it ain't precious.
150 *
151 * Results:
152 *	None.
153 *
154 * Side Effects:
155 *	The target is removed and the process exits. If .INTERRUPT exists,
156 *	its commands are run first WITH INTERRUPTS IGNORED..
157 *
158 *-----------------------------------------------------------------------
159 */
160static void
161CompatInterrupt(int signo)
162{
163    GNode   *gn;
164
165    if ((curTarg != NULL) && !Targ_Precious (curTarg)) {
166	char	  *p1;
167	char 	  *file = Var_Value(TARGET, curTarg, &p1);
168
169	if (!noExecute && eunlink(file) != -1) {
170	    Error("*** %s removed", file);
171	}
172	if (p1)
173	    free(p1);
174
175	/*
176	 * Run .INTERRUPT only if hit with interrupt signal
177	 */
178	if (signo == SIGINT) {
179	    gn = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
180	    if (gn != NULL) {
181		Compat_Make(gn, gn);
182	    }
183	}
184
185    }
186    if (signo == SIGQUIT)
187	_exit(signo);
188    bmake_signal(signo, SIG_DFL);
189    kill(myPid, signo);
190}
191
192/*-
193 *-----------------------------------------------------------------------
194 * CompatRunCommand --
195 *	Execute the next command for a target. If the command returns an
196 *	error, the node's made field is set to ERROR and creation stops.
197 *
198 * Input:
199 *	cmdp		Command to execute
200 *	gnp		Node from which the command came
201 *
202 * Results:
203 *	0 if the command succeeded, 1 if an error occurred.
204 *
205 * Side Effects:
206 *	The node's 'made' field may be set to ERROR.
207 *
208 *-----------------------------------------------------------------------
209 */
210int
211CompatRunCommand(void *cmdp, void *gnp)
212{
213    char    	  *cmdStart;	/* Start of expanded command */
214    char 	  *cp, *bp;
215    Boolean 	  silent,   	/* Don't print command */
216	    	  doIt;		/* Execute even if -n */
217    volatile Boolean errCheck; 	/* Check errors */
218    WAIT_T 	  reason;   	/* Reason for child's death */
219    int	    	  status;   	/* Description of child's death */
220    pid_t	  cpid;	    	/* Child actually found */
221    pid_t	  retstat;    	/* Result of wait */
222    LstNode 	  cmdNode;  	/* Node where current command is located */
223    const char  ** volatile av;	/* Argument vector for thing to exec */
224    char	** volatile mav;/* Copy of the argument vector for freeing */
225    int	    	  argc;	    	/* Number of arguments in av or 0 if not
226				 * dynamically allocated */
227    Boolean 	  local;    	/* TRUE if command should be executed
228				 * locally */
229    Boolean 	  useShell;    	/* TRUE if command should be executed
230				 * using a shell */
231    char	  * volatile cmd = (char *)cmdp;
232    GNode	  *gn = (GNode *)gnp;
233
234    silent = gn->type & OP_SILENT;
235    errCheck = !(gn->type & OP_IGNORE);
236    doIt = FALSE;
237
238    cmdNode = Lst_Member(gn->commands, cmd);
239    cmdStart = Var_Subst(NULL, cmd, gn, FALSE);
240
241    /*
242     * brk_string will return an argv with a NULL in av[0], thus causing
243     * execvp to choke and die horribly. Besides, how can we execute a null
244     * command? In any case, we warn the user that the command expanded to
245     * nothing (is this the right thing to do?).
246     */
247
248    if (*cmdStart == '\0') {
249	free(cmdStart);
250	return(0);
251    }
252    cmd = cmdStart;
253    Lst_Replace(cmdNode, cmdStart);
254
255    if ((gn->type & OP_SAVE_CMDS) && (gn != ENDNode)) {
256	(void)Lst_AtEnd(ENDNode->commands, cmdStart);
257	return(0);
258    }
259    if (strcmp(cmdStart, "...") == 0) {
260	gn->type |= OP_SAVE_CMDS;
261	return(0);
262    }
263
264    while ((*cmd == '@') || (*cmd == '-') || (*cmd == '+')) {
265	switch (*cmd) {
266	case '@':
267	    silent = DEBUG(LOUD) ? FALSE : TRUE;
268	    break;
269	case '-':
270	    errCheck = FALSE;
271	    break;
272	case '+':
273	    doIt = TRUE;
274	    if (!meta[0])		/* we came here from jobs */
275		Compat_Init();
276	    break;
277	}
278	cmd++;
279    }
280
281    while (isspace((unsigned char)*cmd))
282	cmd++;
283
284    /*
285     * If we did not end up with a command, just skip it.
286     */
287    if (!*cmd)
288	return (0);
289
290#if !defined(MAKE_NATIVE)
291    /*
292     * In a non-native build, the host environment might be weird enough
293     * that it's necessary to go through a shell to get the correct
294     * behaviour.  Or perhaps the shell has been replaced with something
295     * that does extra logging, and that should not be bypassed.
296     */
297    useShell = TRUE;
298#else
299    /*
300     * Search for meta characters in the command. If there are no meta
301     * characters, there's no need to execute a shell to execute the
302     * command.
303     */
304    for (cp = cmd; !meta[(unsigned char)*cp]; cp++) {
305	continue;
306    }
307    useShell = (*cp != '\0');
308#endif
309
310    /*
311     * Print the command before echoing if we're not supposed to be quiet for
312     * this one. We also print the command if -n given.
313     */
314    if (!silent || NoExecute(gn)) {
315	printf("%s\n", cmd);
316	fflush(stdout);
317    }
318
319    /*
320     * If we're not supposed to execute any commands, this is as far as
321     * we go...
322     */
323    if (!doIt && NoExecute(gn)) {
324	return (0);
325    }
326    if (DEBUG(JOB))
327	fprintf(debug_file, "Execute: '%s'\n", cmd);
328
329again:
330    if (useShell) {
331	/*
332	 * We need to pass the command off to the shell, typically
333	 * because the command contains a "meta" character.
334	 */
335	static const char *shargv[5];
336	int shargc;
337
338	shargc = 0;
339	shargv[shargc++] = shellPath;
340	/*
341	 * The following work for any of the builtin shell specs.
342	 */
343	if (errCheck && shellErrFlag) {
344	    shargv[shargc++] = shellErrFlag;
345	}
346	if (DEBUG(SHELL))
347		shargv[shargc++] = "-xc";
348	else
349		shargv[shargc++] = "-c";
350	shargv[shargc++] = cmd;
351	shargv[shargc++] = NULL;
352	av = shargv;
353	argc = 0;
354	bp = NULL;
355	mav = NULL;
356    } else {
357	/*
358	 * No meta-characters, so no need to exec a shell. Break the command
359	 * into words to form an argument vector we can execute.
360	 */
361	mav = brk_string(cmd, &argc, TRUE, &bp);
362	if (mav == NULL) {
363		useShell = 1;
364		goto again;
365	}
366	av = (void *)mav;
367    }
368
369    local = TRUE;
370
371#ifdef USE_META
372    if (useMeta) {
373	meta_compat_start();
374    }
375#endif
376
377    /*
378     * Fork and execute the single command. If the fork fails, we abort.
379     */
380    cpid = vFork();
381    if (cpid < 0) {
382	Fatal("Could not fork");
383    }
384    if (cpid == 0) {
385	Var_ExportVars();
386#ifdef USE_META
387	if (useMeta) {
388	    meta_compat_child();
389	}
390#endif
391	if (local)
392	    (void)execvp(av[0], (char *const *)UNCONST(av));
393	else
394	    (void)execv(av[0], (char *const *)UNCONST(av));
395	execError("exec", av[0]);
396	_exit(1);
397    }
398    if (mav)
399	free(mav);
400    if (bp)
401	free(bp);
402    Lst_Replace(cmdNode, NULL);
403
404#ifdef USE_META
405    if (useMeta) {
406	meta_compat_parent();
407    }
408#endif
409
410    /*
411     * The child is off and running. Now all we can do is wait...
412     */
413    while (1) {
414
415	while ((retstat = wait(&reason)) != cpid) {
416	    if (retstat > 0)
417		JobReapChild(retstat, reason, FALSE); /* not ours? */
418	    if (retstat == -1 && errno != EINTR) {
419		break;
420	    }
421	}
422
423	if (retstat > -1) {
424	    if (WIFSTOPPED(reason)) {
425		status = WSTOPSIG(reason);		/* stopped */
426	    } else if (WIFEXITED(reason)) {
427		status = WEXITSTATUS(reason);		/* exited */
428#if defined(USE_META) && defined(USE_FILEMON_ONCE)
429		if (useMeta) {
430		    meta_cmd_finish(NULL);
431		}
432#endif
433		if (status != 0) {
434		    if (DEBUG(ERROR)) {
435		        fprintf(debug_file, "\n*** Failed target:  %s\n*** Failed command: ",
436			    gn->name);
437		        for (cp = cmd; *cp; ) {
438    			    if (isspace((unsigned char)*cp)) {
439				fprintf(debug_file, " ");
440			        while (isspace((unsigned char)*cp))
441				    cp++;
442			    } else {
443				fprintf(debug_file, "%c", *cp);
444			        cp++;
445			    }
446		        }
447			fprintf(debug_file, "\n");
448		    }
449		    printf("*** Error code %d", status);
450		}
451	    } else {
452		status = WTERMSIG(reason);		/* signaled */
453		printf("*** Signal %d", status);
454	    }
455
456
457	    if (!WIFEXITED(reason) || (status != 0)) {
458		if (errCheck) {
459#ifdef USE_META
460		    if (useMeta) {
461			meta_job_error(NULL, gn, 0, status);
462		    }
463#endif
464		    gn->made = ERROR;
465		    if (keepgoing) {
466			/*
467			 * Abort the current target, but let others
468			 * continue.
469			 */
470			printf(" (continuing)\n");
471		    }
472		} else {
473		    /*
474		     * Continue executing commands for this target.
475		     * If we return 0, this will happen...
476		     */
477		    printf(" (ignored)\n");
478		    status = 0;
479		}
480	    }
481	    break;
482	} else {
483	    Fatal("error in wait: %d: %s", retstat, strerror(errno));
484	    /*NOTREACHED*/
485	}
486    }
487    free(cmdStart);
488
489    return (status);
490}
491
492/*-
493 *-----------------------------------------------------------------------
494 * Compat_Make --
495 *	Make a target.
496 *
497 * Input:
498 *	gnp		The node to make
499 *	pgnp		Parent to abort if necessary
500 *
501 * Results:
502 *	0
503 *
504 * Side Effects:
505 *	If an error is detected and not being ignored, the process exits.
506 *
507 *-----------------------------------------------------------------------
508 */
509int
510Compat_Make(void *gnp, void *pgnp)
511{
512    GNode *gn = (GNode *)gnp;
513    GNode *pgn = (GNode *)pgnp;
514
515    if (!meta[0])		/* we came here from jobs */
516	Compat_Init();
517    if (gn->made == UNMADE && (gn == pgn || (pgn->type & OP_MADE) == 0)) {
518	/*
519	 * First mark ourselves to be made, then apply whatever transformations
520	 * the suffix module thinks are necessary. Once that's done, we can
521	 * descend and make all our children. If any of them has an error
522	 * but the -k flag was given, our 'make' field will be set FALSE again.
523	 * This is our signal to not attempt to do anything but abort our
524	 * parent as well.
525	 */
526	gn->flags |= REMAKE;
527	gn->made = BEINGMADE;
528	if ((gn->type & OP_MADE) == 0)
529	    Suff_FindDeps(gn);
530	Lst_ForEach(gn->children, Compat_Make, gn);
531	if ((gn->flags & REMAKE) == 0) {
532	    gn->made = ABORTED;
533	    pgn->flags &= ~REMAKE;
534	    goto cohorts;
535	}
536
537	if (Lst_Member(gn->iParents, pgn) != NULL) {
538	    char *p1;
539	    Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
540	    if (p1)
541		free(p1);
542	}
543
544	/*
545	 * All the children were made ok. Now cmgn->mtime contains the
546	 * modification time of the newest child, we need to find out if we
547	 * exist and when we were modified last. The criteria for datedness
548	 * are defined by the Make_OODate function.
549	 */
550	if (DEBUG(MAKE)) {
551	    fprintf(debug_file, "Examining %s...", gn->name);
552	}
553	if (! Make_OODate(gn)) {
554	    gn->made = UPTODATE;
555	    if (DEBUG(MAKE)) {
556		fprintf(debug_file, "up-to-date.\n");
557	    }
558	    goto cohorts;
559	} else if (DEBUG(MAKE)) {
560	    fprintf(debug_file, "out-of-date.\n");
561	}
562
563	/*
564	 * If the user is just seeing if something is out-of-date, exit now
565	 * to tell him/her "yes".
566	 */
567	if (queryFlag) {
568	    exit(1);
569	}
570
571	/*
572	 * We need to be re-made. We also have to make sure we've got a $?
573	 * variable. To be nice, we also define the $> variable using
574	 * Make_DoAllVar().
575	 */
576	Make_DoAllVar(gn);
577
578	/*
579	 * Alter our type to tell if errors should be ignored or things
580	 * should not be printed so CompatRunCommand knows what to do.
581	 */
582	if (Targ_Ignore(gn)) {
583	    gn->type |= OP_IGNORE;
584	}
585	if (Targ_Silent(gn)) {
586	    gn->type |= OP_SILENT;
587	}
588
589	if (Job_CheckCommands(gn, Fatal)) {
590	    /*
591	     * Our commands are ok, but we still have to worry about the -t
592	     * flag...
593	     */
594	    if (!touchFlag || (gn->type & OP_MAKE)) {
595		curTarg = gn;
596#ifdef USE_META
597		if (useMeta && !NoExecute(gn)) {
598		    meta_job_start(NULL, gn);
599		}
600#endif
601		Lst_ForEach(gn->commands, CompatRunCommand, gn);
602		curTarg = NULL;
603	    } else {
604		Job_Touch(gn, gn->type & OP_SILENT);
605	    }
606	} else {
607	    gn->made = ERROR;
608	}
609#ifdef USE_META
610	if (useMeta && !NoExecute(gn)) {
611	    meta_job_finish(NULL);
612	}
613#endif
614
615	if (gn->made != ERROR) {
616	    /*
617	     * If the node was made successfully, mark it so, update
618	     * its modification time and timestamp all its parents. Note
619	     * that for .ZEROTIME targets, the timestamping isn't done.
620	     * This is to keep its state from affecting that of its parent.
621	     */
622	    gn->made = MADE;
623	    pgn->flags |= Make_Recheck(gn) == 0 ? FORCE : 0;
624	    if (!(gn->type & OP_EXEC)) {
625		pgn->flags |= CHILDMADE;
626		Make_TimeStamp(pgn, gn);
627	    }
628	} else if (keepgoing) {
629	    pgn->flags &= ~REMAKE;
630	} else {
631	    PrintOnError(gn, "\n\nStop.");
632	    exit(1);
633	}
634    } else if (gn->made == ERROR) {
635	/*
636	 * Already had an error when making this beastie. Tell the parent
637	 * to abort.
638	 */
639	pgn->flags &= ~REMAKE;
640    } else {
641	if (Lst_Member(gn->iParents, pgn) != NULL) {
642	    char *p1;
643	    Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
644	    if (p1)
645		free(p1);
646	}
647	switch(gn->made) {
648	    case BEINGMADE:
649		Error("Graph cycles through %s", gn->name);
650		gn->made = ERROR;
651		pgn->flags &= ~REMAKE;
652		break;
653	    case MADE:
654		if ((gn->type & OP_EXEC) == 0) {
655		    pgn->flags |= CHILDMADE;
656		    Make_TimeStamp(pgn, gn);
657		}
658		break;
659	    case UPTODATE:
660		if ((gn->type & OP_EXEC) == 0) {
661		    Make_TimeStamp(pgn, gn);
662		}
663		break;
664	    default:
665		break;
666	}
667    }
668
669cohorts:
670    Lst_ForEach(gn->cohorts, Compat_Make, pgnp);
671    return (0);
672}
673
674/*-
675 *-----------------------------------------------------------------------
676 * Compat_Run --
677 *	Initialize this mode and start making.
678 *
679 * Input:
680 *	targs		List of target nodes to re-create
681 *
682 * Results:
683 *	None.
684 *
685 * Side Effects:
686 *	Guess what?
687 *
688 *-----------------------------------------------------------------------
689 */
690void
691Compat_Run(Lst targs)
692{
693    GNode   	  *gn = NULL;/* Current root target */
694    int	    	  errors;   /* Number of targets not remade due to errors */
695
696    Compat_Init();
697
698    if (bmake_signal(SIGINT, SIG_IGN) != SIG_IGN) {
699	bmake_signal(SIGINT, CompatInterrupt);
700    }
701    if (bmake_signal(SIGTERM, SIG_IGN) != SIG_IGN) {
702	bmake_signal(SIGTERM, CompatInterrupt);
703    }
704    if (bmake_signal(SIGHUP, SIG_IGN) != SIG_IGN) {
705	bmake_signal(SIGHUP, CompatInterrupt);
706    }
707    if (bmake_signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
708	bmake_signal(SIGQUIT, CompatInterrupt);
709    }
710
711    ENDNode = Targ_FindNode(".END", TARG_CREATE);
712    ENDNode->type = OP_SPECIAL;
713    /*
714     * If the user has defined a .BEGIN target, execute the commands attached
715     * to it.
716     */
717    if (!queryFlag) {
718	gn = Targ_FindNode(".BEGIN", TARG_NOCREATE);
719	if (gn != NULL) {
720	    Compat_Make(gn, gn);
721            if (gn->made == ERROR) {
722                PrintOnError(gn, "\n\nStop.");
723                exit(1);
724            }
725	}
726    }
727
728    /*
729     * Expand .USE nodes right now, because they can modify the structure
730     * of the tree.
731     */
732    Make_ExpandUse(targs);
733
734    /*
735     * For each entry in the list of targets to create, call Compat_Make on
736     * it to create the thing. Compat_Make will leave the 'made' field of gn
737     * in one of several states:
738     *	    UPTODATE	    gn was already up-to-date
739     *	    MADE  	    gn was recreated successfully
740     *	    ERROR 	    An error occurred while gn was being created
741     *	    ABORTED	    gn was not remade because one of its inferiors
742     *	    	  	    could not be made due to errors.
743     */
744    errors = 0;
745    while (!Lst_IsEmpty (targs)) {
746	gn = (GNode *)Lst_DeQueue(targs);
747	Compat_Make(gn, gn);
748
749	if (gn->made == UPTODATE) {
750	    printf("`%s' is up to date.\n", gn->name);
751	} else if (gn->made == ABORTED) {
752	    printf("`%s' not remade because of errors.\n", gn->name);
753	    errors += 1;
754	}
755    }
756
757    /*
758     * If the user has defined a .END target, run its commands.
759     */
760    if (errors == 0) {
761	Compat_Make(ENDNode, ENDNode);
762	if (gn->made == ERROR) {
763	    PrintOnError(gn, "\n\nStop.");
764	    exit(1);
765	}
766    }
767}
768