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Annotation of src/usr.bin/make/compat.c, Revision 1.36

1.36    ! espie       1: /*     $OpenPackages$ */
        !             2: /*     $OpenBSD: compat.c,v 1.12 1998/12/05 00:06:27 espie Exp $       */
1.8       millert     3: /*     $NetBSD: compat.c,v 1.14 1996/11/06 17:59:01 christos Exp $     */
1.1       deraadt     4:
                      5: /*
                      6:  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
                      7:  * Copyright (c) 1988, 1989 by Adam de Boor
                      8:  * Copyright (c) 1989 by Berkeley Softworks
                      9:  * All rights reserved.
                     10:  *
                     11:  * This code is derived from software contributed to Berkeley by
                     12:  * Adam de Boor.
                     13:  *
                     14:  * Redistribution and use in source and binary forms, with or without
                     15:  * modification, are permitted provided that the following conditions
                     16:  * are met:
                     17:  * 1. Redistributions of source code must retain the above copyright
                     18:  *    notice, this list of conditions and the following disclaimer.
                     19:  * 2. Redistributions in binary form must reproduce the above copyright
                     20:  *    notice, this list of conditions and the following disclaimer in the
                     21:  *    documentation and/or other materials provided with the distribution.
                     22:  * 3. All advertising materials mentioning features or use of this software
                     23:  *    must display the following acknowledgement:
                     24:  *     This product includes software developed by the University of
                     25:  *     California, Berkeley and its contributors.
                     26:  * 4. Neither the name of the University nor the names of its contributors
                     27:  *    may be used to endorse or promote products derived from this software
                     28:  *    without specific prior written permission.
                     29:  *
                     30:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     31:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     32:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     33:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     34:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     35:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     36:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     37:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     38:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     39:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     40:  * SUCH DAMAGE.
                     41:  */
                     42:
                     43: /*-
                     44:  * compat.c --
                     45:  *     The routines in this file implement the full-compatibility
                     46:  *     mode of PMake. Most of the special functionality of PMake
                     47:  *     is available in this mode. Things not supported:
                     48:  *         - different shells.
                     49:  *         - friendly variable substitution.
                     50:  *
                     51:  * Interface:
                     52:  *     Compat_Run          Initialize things for this module and recreate
1.36    ! espie      53:  *                         thems as need creatin'
1.1       deraadt    54:  */
                     55:
                     56: #include    <sys/types.h>
                     57: #include    <sys/stat.h>
                     58: #include    <sys/wait.h>
                     59: #include    <ctype.h>
                     60: #include    <errno.h>
                     61: #include    <signal.h>
1.36    ! espie      62: #include    <stddef.h>
        !            63: #include    <stdio.h>
1.1       deraadt    64: #include    "make.h"
1.34      espie      65: #include    "ohash.h"
1.1       deraadt    66: #include    "dir.h"
                     67: #include    "job.h"
1.33      espie      68:
                     69: #ifndef lint
                     70: #if 0
                     71: static char sccsid[] = "@(#)compat.c   8.2 (Berkeley) 3/19/94";
                     72: #else
                     73: UNUSED
1.36    ! espie      74: static char rcsid[] = "$OpenBSD: compat.c,v 1.12 1998/12/05 00:06:27 espie Exp $";
1.33      espie      75: #endif
                     76: #endif /* not lint */
1.1       deraadt    77:
1.36    ! espie      78: /* The following array is used to make a fast determination of which
1.1       deraadt    79:  * characters are interpreted specially by the shell.  If a command
                     80:  * contains any of these characters, it is executed by the shell, not
1.36    ! espie      81:  * directly by us.  */
1.1       deraadt    82:
1.36    ! espie      83: static char        meta[256];
1.1       deraadt    84:
1.18      espie      85: static GNode       *curTarg = NULL;
1.1       deraadt    86: static GNode       *ENDNode;
1.36    ! espie      87: static void CompatInterrupt(int);
        !            88: static int CompatRunCommand(void *, void *);
        !            89: static void CompatMake(void *, void *);
        !            90: static int shellneed(char **);
1.1       deraadt    91:
                     92: /*-
                     93:  *-----------------------------------------------------------------------
                     94:  * CompatInterrupt --
                     95:  *     Interrupt the creation of the current target and remove it if
                     96:  *     it ain't precious.
                     97:  *
                     98:  * Side Effects:
                     99:  *     The target is removed and the process exits. If .INTERRUPT exists,
                    100:  *     its commands are run first WITH INTERRUPTS IGNORED..
                    101:  *-----------------------------------------------------------------------
                    102:  */
                    103: static void
1.36    ! espie     104: CompatInterrupt(signo)
        !           105:     int     signo;
1.1       deraadt   106: {
                    107:     GNode   *gn;
1.4       millert   108:
1.36    ! espie     109:     if (curTarg != NULL && !Targ_Precious(curTarg)) {
        !           110:        char      *file = Varq_Value(TARGET_INDEX, curTarg);
1.1       deraadt   111:
1.36    ! espie     112:        if (!noExecute && eunlink(file) != -1)
1.12      espie     113:            Error("*** %s removed\n", file);
1.1       deraadt   114:
1.36    ! espie     115:        /* Run .INTERRUPT only if hit with interrupt signal.  */
1.1       deraadt   116:        if (signo == SIGINT) {
1.36    ! espie     117:            gn = Targ_FindNode(".INTERRUPT", NULL, TARG_NOCREATE);
        !           118:            if (gn != NULL)
1.28      espie     119:                Lst_Find(&gn->commands, CompatRunCommand, gn);
1.1       deraadt   120:        }
                    121:
                    122:     }
1.36    ! espie     123:     exit(signo);
1.1       deraadt   124: }
1.36    ! espie     125:
1.1       deraadt   126: /*-
                    127:  *-----------------------------------------------------------------------
1.10      deraadt   128:  * shellneed --
1.36    ! espie     129:  *
1.10      deraadt   130:  * Results:
1.36    ! espie     131:  *     Returns 1 if a specified set of arguments
        !           132:  *     must be executed by the shell,
1.12      espie     133:  *     0 if it can be run via execve, and -1 if the command can be
1.36    ! espie     134:  *     handled internally
1.10      deraadt   135:  *
                    136:  * Side Effects:
1.12      espie     137:  *     May modify the process umask
1.10      deraadt   138:  *-----------------------------------------------------------------------
                    139:  */
                    140: static int
1.36    ! espie     141: shellneed(av)
1.12      espie     142:        char **av;
1.10      deraadt   143: {
1.36    ! espie     144:        char *runsh[] = {
1.11      deraadt   145:                "alias", "cd", "eval", "exec", "exit", "read", "set", "ulimit",
1.36    ! espie     146:                "unalias", "unset", "wait",
1.11      deraadt   147:                NULL
                    148:        };
                    149:
1.12      espie     150:        char **p;
1.11      deraadt   151:
1.12      espie     152:        /* FIXME most of these ARE actual no-ops */
1.11      deraadt   153:        for (p = runsh; *p; p++)
1.12      espie     154:                if (strcmp(av[0], *p) == 0)
1.36    ! espie     155:                        return 1;
1.11      deraadt   156:
1.12      espie     157:        if (strcmp(av[0], "umask") == 0) {
1.10      deraadt   158:                long umi;
                    159:                char *ep = NULL;
                    160:                mode_t um;
                    161:
1.12      espie     162:                if (av[1] != NULL) {
                    163:                        umi = strtol(av[1], &ep, 8);
1.10      deraadt   164:                        if (ep == NULL)
1.36    ! espie     165:                                return 1;
1.10      deraadt   166:                        um = umi;
                    167:                }
1.12      espie     168:                else {
                    169:                        um = umask(0);
                    170:                        printf("%o\n", um);
                    171:                }
1.36    ! espie     172:                (void)umask(um);
        !           173:                return -1;
1.10      deraadt   174:        }
                    175:
1.36    ! espie     176:        return 0;
1.10      deraadt   177: }
1.36    ! espie     178:
1.10      deraadt   179: /*-
                    180:  *-----------------------------------------------------------------------
1.1       deraadt   181:  * CompatRunCommand --
                    182:  *     Execute the next command for a target. If the command returns an
                    183:  *     error, the node's made field is set to ERROR and creation stops.
                    184:  *
                    185:  * Results:
1.36    ! espie     186:  *     0 in case of error, 1 if ok.
1.1       deraadt   187:  *
                    188:  * Side Effects:
                    189:  *     The node's 'made' field may be set to ERROR.
                    190:  *-----------------------------------------------------------------------
                    191:  */
                    192: static int
1.36    ! espie     193: CompatRunCommand(cmdp, gnp)
        !           194:     void *       cmdp;         /* Command to execute */
        !           195:     void *       gnp;          /* Node from which the command came */
1.1       deraadt   196: {
1.36    ! espie     197:     char         *cmdStart;    /* Start of expanded command */
1.12      espie     198:     char *cp, *bp = NULL;
1.36    ! espie     199:     Boolean      silent,       /* Don't print command */
        !           200:                  errCheck,     /* Check errors */
1.32      espie     201:                  doExecute;    /* Execute the command */
1.36    ! espie     202:     int          reason;       /* Reason for child's death */
        !           203:     int          status;       /* Description of child's death */
        !           204:     int          cpid;         /* Child actually found */
        !           205:     ReturnStatus  stat;        /* Status of fork */
        !           206:     LstNode      cmdNode;      /* Node where current command is located */
        !           207:     char         **av;         /* Argument vector for thing to exec */
        !           208:     int          argc;         /* Number of arguments in av or 0 if not
1.1       deraadt   209:                                 * dynamically allocated */
1.36    ! espie     210:     Boolean      local;        /* TRUE if command should be executed
1.1       deraadt   211:                                 * locally */
1.36    ! espie     212:     char         *cmd = (char *)cmdp;
        !           213:     GNode        *gn = (GNode *)gnp;
        !           214:     static char *shargv[4] = { "/bin/sh" };
        !           215:
        !           216:     /* Avoid clobbered variable warnings by forcing the compiler
        !           217:      * to ``unregister'' variables.  */
1.1       deraadt   218: #if __GNUC__
1.36    ! espie     219:     (void)&av;
        !           220:     (void)&errCheck;
1.1       deraadt   221: #endif
                    222:     silent = gn->type & OP_SILENT;
                    223:     errCheck = !(gn->type & OP_IGNORE);
1.32      espie     224:     doExecute = !noExecute;
1.1       deraadt   225:
1.28      espie     226:     cmdNode = Lst_Member(&gn->commands, cmd);
1.30      espie     227:     cmdStart = Var_Subst(cmd, &gn->context, FALSE);
1.1       deraadt   228:
1.36    ! espie     229:     /* brk_string will return an argv with a NULL in av[0], thus causing
1.1       deraadt   230:      * execvp to choke and die horribly. Besides, how can we execute a null
                    231:      * command? In any case, we warn the user that the command expanded to
1.36    ! espie     232:      * nothing (is this the right thing to do?).  */
1.4       millert   233:
1.1       deraadt   234:     if (*cmdStart == '\0') {
                    235:        free(cmdStart);
                    236:        Error("%s expands to empty string", cmd);
1.25      espie     237:        return 1;
1.36    ! espie     238:     } else
1.1       deraadt   239:        cmd = cmdStart;
1.23      espie     240:     Lst_Replace(cmdNode, cmdStart);
1.1       deraadt   241:
                    242:     if ((gn->type & OP_SAVE_CMDS) && (gn != ENDNode)) {
1.28      espie     243:        Lst_AtEnd(&ENDNode->commands, cmdStart);
1.25      espie     244:        return 1;
1.1       deraadt   245:     } else if (strcmp(cmdStart, "...") == 0) {
                    246:        gn->type |= OP_SAVE_CMDS;
1.25      espie     247:        return 1;
1.1       deraadt   248:     }
                    249:
1.32      espie     250:     for (;; cmd++) {
1.36    ! espie     251:        if (*cmd == '@')
        !           252:            silent = DEBUG(LOUD) ? FALSE : TRUE;
1.32      espie     253:        else if (*cmd == '-')
1.1       deraadt   254:            errCheck = FALSE;
1.32      espie     255:        else if (*cmd == '+')
                    256:            doExecute = TRUE;
                    257:        else
                    258:            break;
1.1       deraadt   259:     }
                    260:
1.36    ! espie     261:     while (isspace(*cmd))
1.1       deraadt   262:        cmd++;
1.4       millert   263:
1.36    ! espie     264:     /* Search for meta characters in the command. If there are no meta
1.1       deraadt   265:      * characters, there's no need to execute a shell to execute the
1.36    ! espie     266:      * command.  */
1.1       deraadt   267:     for (cp = cmd; !meta[(unsigned char)*cp]; cp++) {
                    268:        continue;
                    269:     }
                    270:
1.36    ! espie     271:     /* Print the command before echoing if we're not supposed to be quiet for
        !           272:      * this one. We also print the command if -n given.  */
1.1       deraadt   273:     if (!silent || noExecute) {
1.36    ! espie     274:        printf("%s\n", cmd);
1.1       deraadt   275:        fflush(stdout);
                    276:     }
                    277:
1.36    ! espie     278:     /* If we're not supposed to execute any commands, this is as far as
        !           279:      * we go...  */
1.32      espie     280:     if (!doExecute)
1.25      espie     281:        return 1;
1.4       millert   282:
1.1       deraadt   283:     if (*cp != '\0') {
1.36    ! espie     284:        /* If *cp isn't the null character, we hit a "meta" character and
1.1       deraadt   285:         * need to pass the command off to the shell. We give the shell the
                    286:         * -e flag as well as -c if it's supposed to exit when it hits an
1.36    ! espie     287:         * error.  */
1.10      deraadt   288:
1.36    ! espie     289:        shargv[1] = errCheck ? "-ec" : "-c";
1.10      deraadt   290:        shargv[2] = cmd;
1.36    ! espie     291:        shargv[3] = NULL;
1.10      deraadt   292:        av = shargv;
                    293:        argc = 0;
1.12      espie     294:     } else {
1.36    ! espie     295:        /* No meta-characters, so probably no need to exec a shell.
        !           296:         * Break the command into words to form an argument vector
        !           297:         * we can execute.  */
        !           298:        av = brk_string(cmd, &argc, &bp);
        !           299:        switch (shellneed(av)) {
1.12      espie     300:        case -1: /* handled internally */
                    301:                free(bp);
                    302:                free(av);
1.25      espie     303:                return 1;
1.12      espie     304:        case 1:
1.36    ! espie     305:                shargv[1] = errCheck ? "-ec" : "-c";
1.12      espie     306:                shargv[2] = cmd;
1.36    ! espie     307:                shargv[3] = NULL;
        !           308:                free(av);
1.14      espie     309:                free(bp);
                    310:                bp = NULL;
1.12      espie     311:                av = shargv;
                    312:                argc = 0;
                    313:                break;
                    314:        default: /* nothing needed */
                    315:                break;
1.10      deraadt   316:        }
1.1       deraadt   317:     }
1.4       millert   318:
1.1       deraadt   319:     local = TRUE;
                    320:
1.36    ! espie     321:     /* Fork and execute the single command. If the fork fails, we abort.  */
1.1       deraadt   322:     cpid = vfork();
1.36    ! espie     323:     if (cpid == -1)
1.1       deraadt   324:        Fatal("Could not fork");
                    325:     if (cpid == 0) {
                    326:        if (local) {
                    327:            execvp(av[0], av);
1.17      espie     328:            if (errno == ENOENT)
1.36    ! espie     329:                fprintf(stderr, "%s: not found\n", av[0]);
1.17      espie     330:            else
                    331:                perror(av[0]);
1.36    ! espie     332:        } else
1.1       deraadt   333:            (void)execv(av[0], av);
1.9       deraadt   334:        _exit(1);
1.1       deraadt   335:     }
1.12      espie     336:     if (bp) {
1.36    ! espie     337:        free(av);
1.12      espie     338:        free(bp);
                    339:     }
1.1       deraadt   340:     free(cmdStart);
1.23      espie     341:     Lst_Replace(cmdNode, NULL);
1.4       millert   342:
1.36    ! espie     343:     /* The child is off and running. Now all we can do is wait...  */
1.1       deraadt   344:     while (1) {
                    345:
1.2       deraadt   346:        while ((stat = wait(&reason)) != cpid) {
1.36    ! espie     347:            if (stat == -1 && errno != EINTR)
1.1       deraadt   348:                break;
                    349:        }
1.4       millert   350:
1.36    ! espie     351:        if (stat != -1) {
        !           352:            if (WIFSTOPPED(reason))
1.2       deraadt   353:                status = WSTOPSIG(reason);              /* stopped */
1.36    ! espie     354:            else if (WIFEXITED(reason)) {
1.2       deraadt   355:                status = WEXITSTATUS(reason);           /* exited */
1.36    ! espie     356:                if (status != 0)
        !           357:                    printf("*** Error code %d", status);
1.1       deraadt   358:            } else {
1.2       deraadt   359:                status = WTERMSIG(reason);              /* signaled */
1.36    ! espie     360:                printf("*** Signal %d", status);
1.4       millert   361:            }
                    362:
1.1       deraadt   363:
1.36    ! espie     364:            if (!WIFEXITED(reason) || status != 0) {
1.1       deraadt   365:                if (errCheck) {
                    366:                    gn->made = ERROR;
1.36    ! espie     367:                    if (keepgoing)
        !           368:                        /* Abort the current target, but let others
        !           369:                         * continue.  */
        !           370:                        printf(" (continuing)\n");
1.1       deraadt   371:                } else {
1.36    ! espie     372:                    /* Continue executing commands for this target.
        !           373:                     * If we return 0, this will happen...  */
        !           374:                    printf(" (ignored)\n");
1.1       deraadt   375:                    status = 0;
                    376:                }
                    377:            }
                    378:            break;
1.36    ! espie     379:        } else
        !           380:            Fatal("error in wait: %d", stat);
1.1       deraadt   381:            /*NOTREACHED*/
                    382:     }
                    383:
1.25      espie     384:     return !status;
1.1       deraadt   385: }
1.36    ! espie     386:
1.1       deraadt   387: /*-
                    388:  *-----------------------------------------------------------------------
                    389:  * CompatMake --
                    390:  *     Make a target.
                    391:  *
                    392:  * Side Effects:
                    393:  *     If an error is detected and not being ignored, the process exits.
                    394:  *-----------------------------------------------------------------------
                    395:  */
1.26      espie     396: static void
                    397: CompatMake(gnp, pgnp)
1.36    ! espie     398:     void *     gnp;        /* The node to make */
        !           399:     void *     pgnp;       /* Parent to abort if necessary */
1.1       deraadt   400: {
1.36    ! espie     401:     GNode *gn = (GNode *)gnp;
        !           402:     GNode *pgn = (GNode *)pgnp;
1.5       millert   403:
1.7       deraadt   404:     if (pgn->type & OP_MADE) {
1.35      espie     405:        (void)Dir_MTime(gn);
1.7       deraadt   406:        gn->made = UPTODATE;
                    407:     }
                    408:
1.8       millert   409:     if (gn->type & OP_USE) {
                    410:        Make_HandleUse(gn, pgn);
                    411:     } else if (gn->made == UNMADE) {
1.36    ! espie     412:        /* First mark ourselves to be made, then apply whatever transformations
1.1       deraadt   413:         * the suffix module thinks are necessary. Once that's done, we can
                    414:         * descend and make all our children. If any of them has an error
                    415:         * but the -k flag was given, our 'make' field will be set FALSE again.
                    416:         * This is our signal to not attempt to do anything but abort our
1.36    ! espie     417:         * parent as well.  */
1.1       deraadt   418:        gn->make = TRUE;
                    419:        gn->made = BEINGMADE;
1.36    ! espie     420:        Suff_FindDeps(gn);
1.28      espie     421:        Lst_ForEach(&gn->children, CompatMake, gn);
1.1       deraadt   422:        if (!gn->make) {
                    423:            gn->made = ABORTED;
                    424:            pgn->make = FALSE;
1.26      espie     425:            return;
1.1       deraadt   426:        }
                    427:
1.36    ! espie     428:        if (Lst_Member(&gn->iParents, pgn) != NULL) {
1.29      espie     429:            Varq_Set(IMPSRC_INDEX, Varq_Value(TARGET_INDEX, gn), pgn);
1.36    ! espie     430:        }
1.4       millert   431:
1.36    ! espie     432:        /* All the children were made ok. Now cmtime contains the modification
1.1       deraadt   433:         * time of the newest child, we need to find out if we exist and when
                    434:         * we were modified last. The criteria for datedness are defined by the
1.36    ! espie     435:         * Make_OODate function.  */
        !           436:        if (DEBUG(MAKE))
1.1       deraadt   437:            printf("Examining %s...", gn->name);
                    438:        if (! Make_OODate(gn)) {
                    439:            gn->made = UPTODATE;
1.36    ! espie     440:            if (DEBUG(MAKE))
1.1       deraadt   441:                printf("up-to-date.\n");
1.26      espie     442:            return;
1.36    ! espie     443:        } else if (DEBUG(MAKE))
1.1       deraadt   444:            printf("out-of-date.\n");
                    445:
1.36    ! espie     446:        /* If the user is just seeing if something is out-of-date, exit now
        !           447:         * to tell him/her "yes".  */
        !           448:        if (queryFlag)
        !           449:            exit(-1);
1.1       deraadt   450:
1.36    ! espie     451:        /* We need to be re-made. We also have to make sure we've got a $?
1.1       deraadt   452:         * variable. To be nice, we also define the $> variable using
1.36    ! espie     453:         * Make_DoAllVar().  */
1.1       deraadt   454:        Make_DoAllVar(gn);
1.4       millert   455:
1.36    ! espie     456:        /* Alter our type to tell if errors should be ignored or things
        !           457:         * should not be printed so CompatRunCommand knows what to do.  */
        !           458:        if (Targ_Ignore(gn))
1.1       deraadt   459:            gn->type |= OP_IGNORE;
1.36    ! espie     460:        if (Targ_Silent(gn))
1.1       deraadt   461:            gn->type |= OP_SILENT;
                    462:
1.36    ! espie     463:        if (Job_CheckCommands(gn, Fatal)) {
        !           464:            /* Our commands are ok, but we still have to worry about the -t
        !           465:             * flag...  */
1.1       deraadt   466:            if (!touchFlag) {
                    467:                curTarg = gn;
1.28      espie     468:                Lst_Find(&gn->commands, CompatRunCommand, gn);
1.18      espie     469:                curTarg = NULL;
1.36    ! espie     470:            } else
        !           471:                Job_Touch(gn, gn->type & OP_SILENT);
        !           472:        } else
1.1       deraadt   473:            gn->made = ERROR;
                    474:
                    475:        if (gn->made != ERROR) {
1.36    ! espie     476:            /* If the node was made successfully, mark it so, update
1.1       deraadt   477:             * its modification time and timestamp all its parents. Note
                    478:             * that for .ZEROTIME targets, the timestamping isn't done.
1.36    ! espie     479:             * This is to keep its state from affecting that of its parent.  */
1.1       deraadt   480:            gn->made = MADE;
                    481: #ifndef RECHECK
1.36    ! espie     482:            /* We can't re-stat the thing, but we can at least take care of
1.1       deraadt   483:             * rules where a target depends on a source that actually creates
                    484:             * the target, but only if it has changed, e.g.
                    485:             *
                    486:             * parse.h : parse.o
                    487:             *
                    488:             * parse.o : parse.y
1.36    ! espie     489:             *          yacc -d parse.y
        !           490:             *          cc -c y.tab.c
        !           491:             *          mv y.tab.o parse.o
        !           492:             *          cmp -s y.tab.h parse.h || mv y.tab.h parse.h
1.1       deraadt   493:             *
                    494:             * In this case, if the definitions produced by yacc haven't
                    495:             * changed from before, parse.h won't have been updated and
                    496:             * gn->mtime will reflect the current modification time for
                    497:             * parse.h. This is something of a kludge, I admit, but it's a
                    498:             * useful one..
                    499:             *
                    500:             * XXX: People like to use a rule like
                    501:             *
                    502:             * FRC:
                    503:             *
                    504:             * To force things that depend on FRC to be made, so we have to
1.36    ! espie     505:             * check for gn->children being empty as well...  */
        !           506:            if (!Lst_IsEmpty(&gn->commands) || Lst_IsEmpty(&gn->children))
1.1       deraadt   507:                gn->mtime = now;
                    508: #else
1.36    ! espie     509:            /* This is what Make does and it's actually a good thing, as it
1.1       deraadt   510:             * allows rules like
                    511:             *
                    512:             *  cmp -s y.tab.h parse.h || cp y.tab.h parse.h
                    513:             *
                    514:             * to function as intended. Unfortunately, thanks to the stateless
                    515:             * nature of NFS (and the speed of this program), there are times
                    516:             * when the modification time of a file created on a remote
                    517:             * machine will not be modified before the stat() implied by
                    518:             * the Dir_MTime occurs, thus leading us to believe that the file
                    519:             * is unchanged, wreaking havoc with files that depend on this one.
                    520:             *
                    521:             * I have decided it is better to make too much than to make too
                    522:             * little, so this stuff is commented out unless you're sure it's
                    523:             * ok.
                    524:             * -- ardeb 1/12/88
                    525:             */
1.35      espie     526:            if (noExecute || is_out_of_date(Dir_MTime(gn)))
1.1       deraadt   527:                gn->mtime = now;
1.35      espie     528:            if (is_before(gn->mtime, gn->cmtime))
1.1       deraadt   529:                gn->mtime = gn->cmtime;
1.36    ! espie     530:            if (DEBUG(MAKE))
1.1       deraadt   531:                printf("update time: %s\n", Targ_FmtTime(gn->mtime));
                    532: #endif
                    533:            if (!(gn->type & OP_EXEC)) {
                    534:                pgn->childMade = TRUE;
                    535:                Make_TimeStamp(pgn, gn);
                    536:            }
1.36    ! espie     537:        } else if (keepgoing)
1.1       deraadt   538:            pgn->make = FALSE;
1.36    ! espie     539:        else {
        !           540:
1.24      espie     541:            if (gn->lineno)
1.36    ! espie     542:                printf("\n\nStop in %s (line %lu of %s).\n",
        !           543:                        Var_Value(".CURDIR"),
1.24      espie     544:                        (unsigned long)gn->lineno,
                    545:                        gn->fname);
                    546:            else
1.36    ! espie     547:                printf("\n\nStop in %s.\n", Var_Value(".CURDIR"));
        !           548:            exit(1);
1.1       deraadt   549:        }
1.36    ! espie     550:     } else if (gn->made == ERROR)
        !           551:        /* Already had an error when making this beastie. Tell the parent
        !           552:         * to abort.  */
1.1       deraadt   553:        pgn->make = FALSE;
1.36    ! espie     554:     else {
        !           555:        if (Lst_Member(&gn->iParents, pgn) != NULL) {
1.29      espie     556:            Varq_Set(IMPSRC_INDEX, Varq_Value(TARGET_INDEX, gn), pgn);
1.36    ! espie     557:        }
        !           558:        switch (gn->made) {
1.1       deraadt   559:            case BEINGMADE:
                    560:                Error("Graph cycles through %s\n", gn->name);
                    561:                gn->made = ERROR;
                    562:                pgn->make = FALSE;
                    563:                break;
                    564:            case MADE:
                    565:                if ((gn->type & OP_EXEC) == 0) {
                    566:                    pgn->childMade = TRUE;
                    567:                    Make_TimeStamp(pgn, gn);
                    568:                }
                    569:                break;
                    570:            case UPTODATE:
1.36    ! espie     571:                if ((gn->type & OP_EXEC) == 0)
1.1       deraadt   572:                    Make_TimeStamp(pgn, gn);
                    573:                break;
                    574:            default:
                    575:                break;
                    576:        }
                    577:     }
                    578: }
1.36    ! espie     579:
1.1       deraadt   580: /*-
                    581:  *-----------------------------------------------------------------------
                    582:  * Compat_Run --
                    583:  *     Initialize this mode and start making.
                    584:  *
                    585:  * Side Effects:
                    586:  *     Guess what?
                    587:  *-----------------------------------------------------------------------
                    588:  */
                    589: void
                    590: Compat_Run(targs)
1.36    ! espie     591:     Lst          targs;    /* List of target nodes to re-create */
1.1       deraadt   592: {
1.36    ! espie     593:     char         *cp;      /* Pointer to string of shell meta-characters */
        !           594:     GNode        *gn = NULL;/* Current root target */
        !           595:     int          errors;   /* Number of targets not remade due to errors */
1.1       deraadt   596:
1.36    ! espie     597:     if (signal(SIGINT, SIG_IGN) != SIG_IGN)
1.1       deraadt   598:        signal(SIGINT, CompatInterrupt);
1.36    ! espie     599:     if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
1.1       deraadt   600:        signal(SIGTERM, CompatInterrupt);
1.36    ! espie     601:     if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
1.1       deraadt   602:        signal(SIGHUP, CompatInterrupt);
1.36    ! espie     603:     if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
1.1       deraadt   604:        signal(SIGQUIT, CompatInterrupt);
                    605:
1.36    ! espie     606:     for (cp = "#=|^(){};&<>*?[]:$`\\\n"; *cp != '\0'; cp++)
1.1       deraadt   607:        meta[(unsigned char) *cp] = 1;
1.36    ! espie     608:     /* The null character serves as a sentinel in the string.  */
1.1       deraadt   609:     meta[0] = 1;
                    610:
1.36    ! espie     611:     ENDNode = Targ_FindNode(".END", NULL, TARG_CREATE);
        !           612:     /* If the user has defined a .BEGIN target, execute the commands attached
        !           613:      * to it.  */
1.1       deraadt   614:     if (!queryFlag) {
1.36    ! espie     615:        gn = Targ_FindNode(".BEGIN", NULL, TARG_NOCREATE);
1.18      espie     616:        if (gn != NULL) {
1.28      espie     617:            Lst_Find(&gn->commands, CompatRunCommand, gn);
1.36    ! espie     618:            if (gn->made == ERROR) {
        !           619:                printf("\n\nStop.\n");
        !           620:                exit(1);
        !           621:            }
1.1       deraadt   622:        }
                    623:     }
                    624:
1.36    ! espie     625:     /* For each entry in the list of targets to create, call CompatMake on
1.1       deraadt   626:      * it to create the thing. CompatMake will leave the 'made' field of gn
                    627:      * in one of several states:
                    628:      *     UPTODATE        gn was already up-to-date
1.36    ! espie     629:      *     MADE            gn was recreated successfully
        !           630:      *     ERROR           An error occurred while gn was being created
1.1       deraadt   631:      *     ABORTED         gn was not remade because one of its inferiors
1.36    ! espie     632:      *                     could not be made due to errors.  */
1.1       deraadt   633:     errors = 0;
1.19      espie     634:     while ((gn = (GNode *)Lst_DeQueue(targs)) != NULL) {
1.26      espie     635:        CompatMake(gn, gn);
1.1       deraadt   636:
1.36    ! espie     637:        if (gn->made == UPTODATE)
        !           638:            printf("`%s' is up to date.\n", gn->name);
        !           639:        else if (gn->made == ABORTED) {
        !           640:            printf("`%s' not remade because of errors.\n", gn->name);
1.1       deraadt   641:            errors += 1;
                    642:        }
                    643:     }
                    644:
1.36    ! espie     645:     /* If the user has defined a .END target, run its commands.  */
        !           646:     if (errors == 0)
1.28      espie     647:        Lst_Find(&ENDNode->commands, CompatRunCommand, gn);
1.1       deraadt   648: }