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compat.c revision 1.266
      1 /*	$NetBSD: compat.c,v 1.266 2025/05/18 06:24:27 rillig 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 /*
     73  * This file implements the full-compatibility mode of make, which makes the
     74  * targets without parallelism and without a custom shell.
     75  *
     76  * Interface:
     77  *	Compat_MakeAll	Initialize this module and make the given targets.
     78  */
     79 
     80 #include <sys/types.h>
     81 #include <sys/stat.h>
     82 #include <sys/wait.h>
     83 
     84 #include <errno.h>
     85 #include <signal.h>
     86 
     87 #include "make.h"
     88 #include "dir.h"
     89 #include "job.h"
     90 #ifdef USE_META
     91 # include "meta.h"
     92 #endif
     93 #include "metachar.h"
     94 #include "pathnames.h"
     95 
     96 /*	"@(#)compat.c	8.2 (Berkeley) 3/19/94"	*/
     97 MAKE_RCSID("$NetBSD: compat.c,v 1.266 2025/05/18 06:24:27 rillig Exp $");
     98 
     99 static GNode *curTarg;
    100 static pid_t compatChild;
    101 static int compatSigno;
    102 
    103 /*
    104  * Delete the file of a failed, interrupted, or otherwise duffed target,
    105  * unless inhibited by .PRECIOUS.
    106  */
    107 static void
    108 CompatDeleteTarget(GNode *gn)
    109 {
    110 	if (!GNode_IsPrecious(gn) &&
    111 	    (gn->type & OP_PHONY) == 0) {
    112 		const char *file = GNode_VarTarget(gn);
    113 		if (!opts.noExecute && unlink_file(file) == 0)
    114 			Error("*** %s removed", file);
    115 	}
    116 }
    117 
    118 /*
    119  * Interrupt the creation of the current target and remove it if it ain't
    120  * precious. Then exit.
    121  *
    122  * If .INTERRUPT exists, its commands are run first WITH INTERRUPTS IGNORED.
    123  *
    124  * XXX: is .PRECIOUS supposed to inhibit .INTERRUPT? I doubt it, but I've
    125  * left the logic alone for now. - dholland 20160826
    126  */
    127 static void
    128 CompatInterrupt(int signo)
    129 {
    130 	if (curTarg != NULL) {
    131 		CompatDeleteTarget(curTarg);
    132 		if (signo == SIGINT && !GNode_IsPrecious(curTarg)) {
    133 			GNode *gn = Targ_FindNode(".INTERRUPT");
    134 			if (gn != NULL)
    135 				Compat_Make(gn, gn);
    136 		}
    137 	}
    138 
    139 	if (signo == SIGQUIT)
    140 		_exit(signo);
    141 
    142 	/*
    143 	 * If there is a child running, pass the signal on.
    144 	 * We will exist after it has exited.
    145 	 */
    146 	compatSigno = signo;
    147 	if (compatChild > 0) {
    148 		KILLPG(compatChild, signo);
    149 	} else {
    150 		bmake_signal(signo, SIG_DFL);
    151 		kill(myPid, signo);
    152 	}
    153 }
    154 
    155 static void
    156 DebugFailedTarget(const char *cmd, const GNode *gn)
    157 {
    158 	const char *p = cmd;
    159 	debug_printf("\n*** Failed target:  %s\n*** Failed command: ",
    160 	    gn->name);
    161 
    162 	/*
    163 	 * Replace runs of whitespace with a single space, to reduce the
    164 	 * amount of whitespace for multi-line command lines.
    165 	 */
    166 	while (*p != '\0') {
    167 		if (ch_isspace(*p)) {
    168 			debug_printf(" ");
    169 			cpp_skip_whitespace(&p);
    170 		} else {
    171 			debug_printf("%c", *p);
    172 			p++;
    173 		}
    174 	}
    175 	debug_printf("\n");
    176 }
    177 
    178 static bool
    179 UseShell(const char *cmd MAKE_ATTR_UNUSED)
    180 {
    181 #if !defined(MAKE_NATIVE)
    182 	/*
    183 	 * In a non-native build, the host environment might be weird enough
    184 	 * that it's necessary to go through a shell to get the correct
    185 	 * behaviour.  Or perhaps the shell has been replaced with something
    186 	 * that does extra logging, and that should not be bypassed.
    187 	 */
    188 	return true;
    189 #else
    190 	/*
    191 	 * Search for meta characters in the command. If there are no meta
    192 	 * characters, there's no need to execute a shell to execute the
    193 	 * command.
    194 	 *
    195 	 * Additionally variable assignments and empty commands
    196 	 * go to the shell. Therefore treat '=' and ':' like shell
    197 	 * meta characters as documented in make(1).
    198 	 */
    199 
    200 	return needshell(cmd);
    201 #endif
    202 }
    203 
    204 static int
    205 Compat_Spawn(const char **av)
    206 {
    207 	int pid = FORK_FUNCTION();
    208 	if (pid < 0)
    209 		Fatal("Could not fork");
    210 
    211 	if (pid == 0) {
    212 #ifdef USE_META
    213 		if (useMeta)
    214 			meta_compat_child();
    215 #endif
    216 		(void)execvp(av[0], (char *const *)UNCONST(av));
    217 		execDie("exec", av[0]);
    218 	}
    219 	return pid;
    220 }
    221 
    222 /*
    223  * Execute the next command for a target. If the command returns an error,
    224  * the node's made field is set to ERROR and creation stops.
    225  *
    226  * Input:
    227  *	cmdp		Command to execute
    228  *	gn		Node from which the command came
    229  *	ln		List node that contains the command
    230  *
    231  * Results:
    232  *	true if the command succeeded.
    233  */
    234 bool
    235 Compat_RunCommand(const char *cmdp, GNode *gn, StringListNode *ln)
    236 {
    237 	char *cmdStart;		/* Start of expanded command */
    238 	char *volatile bp;
    239 	bool silent;		/* Don't print command */
    240 	bool doIt;		/* Execute even if -n */
    241 	volatile bool errCheck;	/* Check errors */
    242 	int reason;		/* Reason for child's death */
    243 	int status;		/* Description of child's death */
    244 	pid_t retstat;		/* Result of wait */
    245 	const char **av;	/* Arguments for the child process */
    246 	char **volatile mav;	/* Copy of the argument vector for freeing */
    247 	bool useShell;		/* True if command should be executed using a
    248 				 * shell */
    249 	const char *cmd = cmdp;
    250 	char cmd_file[MAXPATHLEN];
    251 	size_t cmd_len;
    252 	int parseErrorsBefore;
    253 
    254 	silent = (gn->type & OP_SILENT) != OP_NONE;
    255 	errCheck = !(gn->type & OP_IGNORE);
    256 	doIt = false;
    257 
    258 	parseErrorsBefore = parseErrors;
    259 	cmdStart = Var_SubstInTarget(cmd, gn);
    260 	if (parseErrors != parseErrorsBefore) {
    261 		free(cmdStart);
    262 		return false;
    263 	}
    264 
    265 	if (cmdStart[0] == '\0') {
    266 		free(cmdStart);
    267 		return true;
    268 	}
    269 	cmd = cmdStart;
    270 	LstNode_Set(ln, cmdStart);
    271 
    272 	if (gn->type & OP_SAVE_CMDS) {
    273 		GNode *endNode = Targ_GetEndNode();
    274 		if (gn != endNode) {
    275 			/*
    276 			 * Append the expanded command, to prevent the
    277 			 * local variables from being interpreted in the
    278 			 * scope of the .END node.
    279 			 *
    280 			 * A probably unintended side effect of this is that
    281 			 * the expanded command will be expanded again in the
    282 			 * .END node.  Therefore, a literal '$' in these
    283 			 * commands must be written as '$$$$' instead of the
    284 			 * usual '$$'.
    285 			 */
    286 			Lst_Append(&endNode->commands, cmdStart);
    287 			goto register_command;
    288 		}
    289 	}
    290 	if (strcmp(cmdStart, "...") == 0) {
    291 		gn->type |= OP_SAVE_CMDS;
    292 	register_command:
    293 		Parse_RegisterCommand(cmdStart);
    294 		return true;
    295 	}
    296 
    297 	for (;;) {
    298 		if (*cmd == '@')
    299 			silent = !DEBUG(LOUD);
    300 		else if (*cmd == '-')
    301 			errCheck = false;
    302 		else if (*cmd == '+')
    303 			doIt = true;
    304 		else if (!ch_isspace(*cmd))
    305 			/* Ignore whitespace for compatibility with gnu make */
    306 			break;
    307 		cmd++;
    308 	}
    309 
    310 	if (cmd[0] == '\0')
    311 		goto register_command;
    312 
    313 	useShell = UseShell(cmd);
    314 
    315 	if (!silent || !GNode_ShouldExecute(gn)) {
    316 		printf("%s\n", cmd);
    317 		fflush(stdout);
    318 	}
    319 
    320 	if (!doIt && !GNode_ShouldExecute(gn))
    321 		goto register_command;
    322 
    323 	DEBUG1(JOB, "Execute: '%s'\n", cmd);
    324 
    325 	cmd_len = strlen(cmd);
    326 	if (cmd_len > MAKE_CMDLEN_LIMIT)
    327 		useShell = true;
    328 	else
    329 		cmd_file[0] = '\0';
    330 
    331 	if (useShell) {
    332 		static const char *shargv[5];
    333 
    334 		if (Cmd_Argv(cmd, cmd_len, shargv, 5,
    335 			cmd_file, sizeof(cmd_file),
    336 			errCheck && shellErrFlag != NULL,
    337 			DEBUG(SHELL)) < 0)
    338 			Fatal("cannot run \"%s\"", cmd);
    339 		av = shargv;
    340 		bp = NULL;
    341 		mav = NULL;
    342 	} else {
    343 		Words words = Str_Words(cmd, false);
    344 		mav = words.words;
    345 		bp = words.freeIt;
    346 		av = (void *)mav;
    347 	}
    348 
    349 #ifdef USE_META
    350 	if (useMeta)
    351 		meta_compat_start();
    352 #endif
    353 
    354 	Var_ReexportVars(gn);
    355 
    356 	compatChild = Compat_Spawn(av);
    357 	free(mav);
    358 	free(bp);
    359 
    360 	/* XXX: Memory management looks suspicious here. */
    361 	/* XXX: Setting a list item to NULL is unexpected. */
    362 	LstNode_SetNull(ln);
    363 
    364 #ifdef USE_META
    365 	if (useMeta)
    366 		meta_compat_parent(compatChild);
    367 #endif
    368 
    369 	/* The child is off and running. Now all we can do is wait... */
    370 	while ((retstat = wait(&reason)) != compatChild) {
    371 		if (retstat > 0)
    372 			JobReapChild(retstat, reason, false); /* not ours? */
    373 		if (retstat == -1 && errno != EINTR)
    374 			break;
    375 	}
    376 
    377 	if (retstat < 0)
    378 		Fatal("error in wait: %d: %s", retstat, strerror(errno));
    379 
    380 	if (WIFSTOPPED(reason)) {
    381 		status = WSTOPSIG(reason);
    382 	} else if (WIFEXITED(reason)) {
    383 		status = WEXITSTATUS(reason);
    384 #if defined(USE_META) && defined(USE_FILEMON_ONCE)
    385 		if (useMeta)
    386 			meta_cmd_finish(NULL);
    387 #endif
    388 		if (status != 0) {
    389 			if (DEBUG(ERROR))
    390 				DebugFailedTarget(cmd, gn);
    391 			printf("*** Error code %d", status);
    392 		}
    393 	} else {
    394 		status = WTERMSIG(reason);
    395 		printf("*** Signal %d", status);
    396 	}
    397 
    398 
    399 	if (!WIFEXITED(reason) || status != 0) {
    400 		if (errCheck) {
    401 #ifdef USE_META
    402 			if (useMeta)
    403 				meta_job_error(NULL, gn, false, status);
    404 #endif
    405 			gn->made = ERROR;
    406 			if (WIFEXITED(reason))
    407 				gn->exit_status = status;
    408 			if (opts.keepgoing) {
    409 				/*
    410 				 * Abort the current target,
    411 				 * but let others continue.
    412 				 */
    413 				printf(" (continuing)\n");
    414 			} else {
    415 				printf("\n");
    416 			}
    417 			if (deleteOnError)
    418 				CompatDeleteTarget(gn);
    419 		} else {
    420 			/*
    421 			 * Continue executing commands for this target.
    422 			 * If we return 0, this will happen...
    423 			 */
    424 			printf(" (ignored)\n");
    425 			status = 0;
    426 		}
    427 		fflush(stdout);
    428 	}
    429 
    430 	free(cmdStart);
    431 	if (cmd_file[0] != '\0')
    432 		unlink(cmd_file);
    433 	compatChild = 0;
    434 	if (compatSigno != 0) {
    435 		bmake_signal(compatSigno, SIG_DFL);
    436 		kill(myPid, compatSigno);
    437 	}
    438 
    439 	return status == 0;
    440 }
    441 
    442 static void
    443 RunCommands(GNode *gn)
    444 {
    445 	StringListNode *ln;
    446 
    447 	for (ln = gn->commands.first; ln != NULL; ln = ln->next) {
    448 		const char *cmd = ln->datum;
    449 		if (!Compat_RunCommand(cmd, gn, ln))
    450 			break;
    451 	}
    452 }
    453 
    454 static void
    455 MakeInRandomOrder(GNode **gnodes, GNode **end, GNode *pgn)
    456 {
    457 	GNode **it;
    458 	size_t r;
    459 
    460 	for (r = (size_t)(end - gnodes); r >= 2; r--) {
    461 		/* Biased, but irrelevant in practice. */
    462 		size_t i = (size_t)random() % r;
    463 		GNode *t = gnodes[r - 1];
    464 		gnodes[r - 1] = gnodes[i];
    465 		gnodes[i] = t;
    466 	}
    467 
    468 	for (it = gnodes; it != end; it++)
    469 		Compat_Make(*it, pgn);
    470 }
    471 
    472 static void
    473 MakeWaitGroupsInRandomOrder(GNodeList *gnodes, GNode *pgn)
    474 {
    475 	Vector vec;
    476 	GNodeListNode *ln;
    477 	GNode **nodes;
    478 	size_t i, n, start;
    479 
    480 	Vector_Init(&vec, sizeof(GNode *));
    481 	for (ln = gnodes->first; ln != NULL; ln = ln->next)
    482 		*(GNode **)Vector_Push(&vec) = ln->datum;
    483 	nodes = vec.items;
    484 	n = vec.len;
    485 
    486 	start = 0;
    487 	for (i = 0; i < n; i++) {
    488 		if (nodes[i]->type & OP_WAIT) {
    489 			MakeInRandomOrder(nodes + start, nodes + i, pgn);
    490 			Compat_Make(nodes[i], pgn);
    491 			start = i + 1;
    492 		}
    493 	}
    494 	MakeInRandomOrder(nodes + start, nodes + i, pgn);
    495 
    496 	Vector_Done(&vec);
    497 }
    498 
    499 static void
    500 MakeNodes(GNodeList *gnodes, GNode *pgn)
    501 {
    502 	GNodeListNode *ln;
    503 
    504 	if (Lst_IsEmpty(gnodes))
    505 		return;
    506 	if (opts.randomizeTargets) {
    507 		MakeWaitGroupsInRandomOrder(gnodes, pgn);
    508 		return;
    509 	}
    510 
    511 	for (ln = gnodes->first; ln != NULL; ln = ln->next) {
    512 		GNode *cgn = ln->datum;
    513 		Compat_Make(cgn, pgn);
    514 	}
    515 }
    516 
    517 static bool
    518 MakeUnmade(GNode *gn, GNode *pgn)
    519 {
    520 
    521 	assert(gn->made == UNMADE);
    522 
    523 	/*
    524 	 * First mark ourselves to be made, then apply whatever transformations
    525 	 * the suffix module thinks are necessary. Once that's done, we can
    526 	 * descend and make all our children. If any of them has an error
    527 	 * but the -k flag was given, our 'make' field will be set to false
    528 	 * again. This is our signal to not attempt to do anything but abort
    529 	 * our parent as well.
    530 	 */
    531 	gn->flags.remake = true;
    532 	gn->made = BEINGMADE;
    533 
    534 	if (!(gn->type & OP_MADE))
    535 		Suff_FindDeps(gn);
    536 
    537 	MakeNodes(&gn->children, gn);
    538 
    539 	if (!gn->flags.remake) {
    540 		gn->made = ABORTED;
    541 		pgn->flags.remake = false;
    542 		return false;
    543 	}
    544 
    545 	if (Lst_FindDatum(&gn->implicitParents, pgn) != NULL)
    546 		Var_Set(pgn, IMPSRC, GNode_VarTarget(gn));
    547 
    548 	/*
    549 	 * All the children were made ok. Now youngestChild->mtime contains the
    550 	 * modification time of the newest child, we need to find out if we
    551 	 * exist and when we were modified last. The criteria for datedness
    552 	 * are defined by GNode_IsOODate.
    553 	 */
    554 	DEBUG1(MAKE, "Examining %s...", gn->name);
    555 	if (!GNode_IsOODate(gn)) {
    556 		gn->made = UPTODATE;
    557 		DEBUG0(MAKE, "up-to-date.\n");
    558 		return false;
    559 	}
    560 
    561 	/*
    562 	 * If the user is just seeing if something is out-of-date, exit now
    563 	 * to tell him/her "yes".
    564 	 */
    565 	DEBUG0(MAKE, "out-of-date.\n");
    566 	if (opts.query && gn != Targ_GetEndNode())
    567 		exit(1);
    568 
    569 	/*
    570 	 * We need to be re-made.
    571 	 * Ensure that $? (.OODATE) and $> (.ALLSRC) are both set.
    572 	 */
    573 	GNode_SetLocalVars(gn);
    574 
    575 	/*
    576 	 * Alter our type to tell if errors should be ignored or things
    577 	 * should not be printed so Compat_RunCommand knows what to do.
    578 	 */
    579 	if (opts.ignoreErrors)
    580 		gn->type |= OP_IGNORE;
    581 	if (opts.silent)
    582 		gn->type |= OP_SILENT;
    583 
    584 	if (Job_CheckCommands(gn, Fatal)) {
    585 		if (!opts.touch || (gn->type & OP_MAKE)) {
    586 			curTarg = gn;
    587 #ifdef USE_META
    588 			if (useMeta && GNode_ShouldExecute(gn))
    589 				meta_job_start(NULL, gn);
    590 #endif
    591 			RunCommands(gn);
    592 			curTarg = NULL;
    593 		} else {
    594 			Job_Touch(gn, (gn->type & OP_SILENT) != OP_NONE);
    595 		}
    596 	} else {
    597 		gn->made = ERROR;
    598 	}
    599 #ifdef USE_META
    600 	if (useMeta && GNode_ShouldExecute(gn)) {
    601 		if (meta_job_finish(NULL) != 0)
    602 			gn->made = ERROR;
    603 	}
    604 #endif
    605 
    606 	if (gn->made != ERROR) {
    607 		/*
    608 		 * If the node was made successfully, mark it so, update
    609 		 * its modification time and timestamp all its parents.
    610 		 * This is to keep its state from affecting that of its parent.
    611 		 */
    612 		gn->made = MADE;
    613 		if (Make_Recheck(gn) == 0)
    614 			pgn->flags.force = true;
    615 		if (!(gn->type & OP_EXEC)) {
    616 			pgn->flags.childMade = true;
    617 			GNode_UpdateYoungestChild(pgn, gn);
    618 		}
    619 	} else if (opts.keepgoing) {
    620 		pgn->flags.remake = false;
    621 	} else {
    622 		PrintOnError(gn, "\nStop.\n");
    623 		exit(1);
    624 	}
    625 	return true;
    626 }
    627 
    628 static void
    629 MakeOther(GNode *gn, GNode *pgn)
    630 {
    631 
    632 	if (Lst_FindDatum(&gn->implicitParents, pgn) != NULL) {
    633 		const char *target = GNode_VarTarget(gn);
    634 		Var_Set(pgn, IMPSRC, target != NULL ? target : "");
    635 	}
    636 
    637 	switch (gn->made) {
    638 	case BEINGMADE:
    639 		Error("Graph cycles through %s", gn->name);
    640 		gn->made = ERROR;
    641 		pgn->flags.remake = false;
    642 		break;
    643 	case MADE:
    644 		if (!(gn->type & OP_EXEC)) {
    645 			pgn->flags.childMade = true;
    646 			GNode_UpdateYoungestChild(pgn, gn);
    647 		}
    648 		break;
    649 	case UPTODATE:
    650 		if (!(gn->type & OP_EXEC))
    651 			GNode_UpdateYoungestChild(pgn, gn);
    652 		break;
    653 	default:
    654 		break;
    655 	}
    656 }
    657 
    658 /*
    659  * Make a target.
    660  *
    661  * If an error is detected and not being ignored, the process exits.
    662  *
    663  * Input:
    664  *	gn		The node to make
    665  *	pgn		Parent to abort if necessary
    666  *
    667  * Output:
    668  *	gn->made
    669  *		UPTODATE	gn was already up-to-date.
    670  *		MADE		gn was recreated successfully.
    671  *		ERROR		An error occurred while gn was being created,
    672  *				either due to missing commands or in -k mode.
    673  *		ABORTED		gn was not remade because one of its
    674  *				dependencies could not be made due to errors.
    675  */
    676 void
    677 Compat_Make(GNode *gn, GNode *pgn)
    678 {
    679 	if (shellName == NULL)	/* we came here from jobs */
    680 		Shell_Init();
    681 
    682 	if (gn->made == UNMADE && (gn == pgn || !(pgn->type & OP_MADE))) {
    683 		if (!MakeUnmade(gn, pgn))
    684 			goto cohorts;
    685 
    686 		/* XXX: Replace with GNode_IsError(gn) */
    687 	} else if (gn->made == ERROR) {
    688 		/*
    689 		 * Already had an error when making this.
    690 		 * Tell the parent to abort.
    691 		 */
    692 		pgn->flags.remake = false;
    693 	} else {
    694 		MakeOther(gn, pgn);
    695 	}
    696 
    697 cohorts:
    698 	MakeNodes(&gn->cohorts, pgn);
    699 }
    700 
    701 static void
    702 MakeBeginNode(void)
    703 {
    704 	GNode *gn = Targ_FindNode(".BEGIN");
    705 	if (gn == NULL)
    706 		return;
    707 
    708 	Compat_Make(gn, gn);
    709 	if (GNode_IsError(gn)) {
    710 		PrintOnError(gn, "\nStop.\n");
    711 		exit(1);
    712 	}
    713 }
    714 
    715 static void
    716 InitSignals(void)
    717 {
    718 	if (bmake_signal(SIGINT, SIG_IGN) != SIG_IGN)
    719 		bmake_signal(SIGINT, CompatInterrupt);
    720 	if (bmake_signal(SIGTERM, SIG_IGN) != SIG_IGN)
    721 		bmake_signal(SIGTERM, CompatInterrupt);
    722 	if (bmake_signal(SIGHUP, SIG_IGN) != SIG_IGN)
    723 		bmake_signal(SIGHUP, CompatInterrupt);
    724 	if (bmake_signal(SIGQUIT, SIG_IGN) != SIG_IGN)
    725 		bmake_signal(SIGQUIT, CompatInterrupt);
    726 }
    727 
    728 void
    729 Compat_MakeAll(GNodeList *targets)
    730 {
    731 	GNode *errorNode = NULL;
    732 
    733 	if (shellName == NULL)
    734 		Shell_Init();
    735 
    736 	InitSignals();
    737 
    738 	/*
    739 	 * Create the .END node now, to keep the (debug) output of the
    740 	 * counter.mk test the same as before 2020-09-23.  This
    741 	 * implementation detail probably doesn't matter though.
    742 	 */
    743 	(void)Targ_GetEndNode();
    744 
    745 	if (!opts.query)
    746 		MakeBeginNode();
    747 
    748 	/*
    749 	 * Expand .USE nodes right now, because they can modify the structure
    750 	 * of the tree.
    751 	 */
    752 	Make_ExpandUse(targets);
    753 
    754 	while (!Lst_IsEmpty(targets)) {
    755 		GNode *gn = Lst_Dequeue(targets);
    756 		Compat_Make(gn, gn);
    757 
    758 		if (gn->made == UPTODATE) {
    759 			printf("`%s' is up to date.\n", gn->name);
    760 		} else if (gn->made == ABORTED) {
    761 			printf("`%s' not remade because of errors.\n",
    762 			    gn->name);
    763 		}
    764 		if (GNode_IsError(gn) && errorNode == NULL)
    765 			errorNode = gn;
    766 	}
    767 
    768 	if (errorNode == NULL) {
    769 		GNode *endNode = Targ_GetEndNode();
    770 		Compat_Make(endNode, endNode);
    771 		if (GNode_IsError(endNode))
    772 			errorNode = endNode;
    773 	}
    774 
    775 	if (errorNode != NULL) {
    776 		if (DEBUG(GRAPH2))
    777 			Targ_PrintGraph(2);
    778 		else if (DEBUG(GRAPH3))
    779 			Targ_PrintGraph(3);
    780 		PrintOnError(errorNode, "\nStop.\n");
    781 		exit(1);
    782 	}
    783 }
    784