1 /* $NetBSD: main.c,v 1.203 2012/08/31 07:00:36 sjg Exp $ */
4 * Copyright (c) 1988, 1989, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
36 * Copyright (c) 1989 by Berkeley Softworks
37 * All rights reserved.
39 * This code is derived from software contributed to Berkeley by
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Berkeley and its contributors.
54 * 4. Neither the name of the University nor the names of its contributors
55 * may be used to endorse or promote products derived from this software
56 * without specific prior written permission.
58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
72 static char rcsid[] = "$NetBSD: main.c,v 1.203 2012/08/31 07:00:36 sjg Exp $";
74 #include <sys/cdefs.h>
76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\
77 The Regents of the University of California. All rights reserved.");
82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94";
84 __RCSID("$NetBSD: main.c,v 1.203 2012/08/31 07:00:36 sjg Exp $");
91 * The main file for this entire program. Exit routines etc
94 * Utility functions defined in this file:
95 * Main_ParseArgLine Takes a line of arguments, breaks them and
96 * treats them as if they were given when first
97 * invoked. Used by the parse module to implement
100 * Error Print a tagged error message. The global
101 * MAKE variable must have been defined. This
102 * takes a format string and two optional
105 * Fatal Print an error message and exit. Also takes
106 * a format string and two arguments.
108 * Punt Aborts all jobs and exits with a message. Also
109 * takes a format string and two arguments.
111 * Finish Finish things up by printing the number of
112 * errors which occurred, as passed to it, and
116 #include <sys/types.h>
117 #include <sys/time.h>
118 #include <sys/param.h>
119 #include <sys/resource.h>
121 #include <sys/stat.h>
123 #include <sys/utsname.h>
138 #include "pathnames.h"
146 #define DEFMAXLOCAL DEFMAXJOBS
147 #endif /* DEFMAXLOCAL */
149 Lst create; /* Targets to be made */
150 time_t now; /* Time at start of make */
151 GNode *DEFAULT; /* .DEFAULT node */
152 Boolean allPrecious; /* .PRECIOUS given on line by itself */
154 static Boolean noBuiltins; /* -r flag */
155 static Lst makefiles; /* ordered list of makefiles to read */
156 static Boolean printVars; /* print value of one or more vars */
157 static Lst variables; /* list of variables to print */
158 int maxJobs; /* -j argument */
159 static int maxJobTokens; /* -j argument */
160 Boolean compatMake; /* -B argument */
161 int debug; /* -d argument */
162 Boolean debugVflag; /* -dV */
163 Boolean noExecute; /* -n flag */
164 Boolean noRecursiveExecute; /* -N flag */
165 Boolean keepgoing; /* -k flag */
166 Boolean queryFlag; /* -q flag */
167 Boolean touchFlag; /* -t flag */
168 Boolean ignoreErrors; /* -i flag */
169 Boolean beSilent; /* -s flag */
170 Boolean oldVars; /* variable substitution style */
171 Boolean checkEnvFirst; /* -e flag */
172 Boolean parseWarnFatal; /* -W flag */
173 Boolean jobServer; /* -J flag */
174 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */
175 Boolean varNoExportEnv; /* -X flag */
176 Boolean doing_depend; /* Set while reading .depend */
177 static Boolean jobsRunning; /* TRUE if the jobs might be running */
178 static const char * tracefile;
179 #ifndef NO_CHECK_MAKE_CHDIR
180 static char * Check_Cwd_av(int, char **, int);
182 static void MainParseArgs(int, char **);
183 static int ReadMakefile(const void *, const void *);
184 static void usage(void) MAKE_ATTR_DEAD;
186 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */
187 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
188 char curdir[MAXPATHLEN + 1]; /* Startup directory */
189 char *progname; /* the program name */
190 char *makeDependfile;
193 Boolean forceJobs = FALSE;
196 * On some systems MACHINE is defined as something other than
201 # define MACHINE FORCE_MACHINE
204 extern Lst parseIncPath;
207 parse_debug_options(const char *argvalue)
214 for (modules = argvalue; *modules; ++modules) {
232 debug |= DEBUG_ERROR;
238 if (modules[1] == '1') {
239 debug |= DEBUG_GRAPH1;
242 else if (modules[1] == '2') {
243 debug |= DEBUG_GRAPH2;
246 else if (modules[1] == '3') {
247 debug |= DEBUG_GRAPH3;
264 debug |= DEBUG_SCRIPT;
267 debug |= DEBUG_PARSE;
282 debug |= DEBUG_SHELL;
285 if (debug_file != stdout && debug_file != stderr)
287 if (*++modules == '+') {
292 if (strcmp(modules, "stdout") == 0) {
296 if (strcmp(modules, "stderr") == 0) {
300 len = strlen(modules);
301 fname = malloc(len + 20);
302 memcpy(fname, modules, len + 1);
303 /* Let the filename be modified by the pid */
304 if (strcmp(fname + len - 3, ".%d") == 0)
305 snprintf(fname + len - 2, 20, "%d", getpid());
306 debug_file = fopen(fname, mode);
308 fprintf(stderr, "Cannot open debug file %s\n",
315 (void)fprintf(stderr,
316 "%s: illegal argument to d option -- %c\n",
323 * Make the debug_file unbuffered, and make
324 * stdout line buffered (unless debugfile == stdout).
326 setvbuf(debug_file, NULL, _IONBF, 0);
327 if (debug_file != stdout) {
328 setvbuf(stdout, NULL, _IOLBF, 0);
334 * Parse a given argument vector. Called from main() and from
335 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
337 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
343 * Various global and local flags will be set depending on the flags
347 MainParseArgs(int argc, char **argv)
353 const char *getopt_def;
355 Boolean inOption, dashDash = FALSE;
356 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
358 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrst"
359 /* Can't actually use getopt(3) because rescanning is not portable */
361 getopt_def = OPTFLAGS;
379 if (c != '-' || dashDash)
384 /* '-' found at some earlier point */
385 getopt_spec = strchr(getopt_def, c);
386 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
387 /* -<something> found, and <something> should have an arg */
391 if(*argvalue == '\0') {
407 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
408 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0);
411 if (chdir(argvalue) == -1) {
412 (void)fprintf(stderr,
413 "%s: chdir %s: %s\n",
418 if (getcwd(curdir, MAXPATHLEN) == NULL) {
419 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
425 if (argvalue == NULL || argvalue[0] == 0) goto noarg;
426 Var_Set(argvalue, "1", VAR_GLOBAL, 0);
427 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
428 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
431 if (argvalue == NULL) goto noarg;
432 Parse_AddIncludeDir(argvalue);
433 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
434 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
437 if (argvalue == NULL) goto noarg;
438 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) {
439 (void)fprintf(stderr,
440 "%s: internal error -- J option malformed (%s)\n",
444 if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
445 (fcntl(jp_1, F_GETFD, 0) < 0)) {
447 (void)fprintf(stderr,
448 "%s: ###### warning -- J descriptors were closed!\n",
456 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
457 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
463 noRecursiveExecute = TRUE;
464 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
468 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
471 if (argvalue == NULL) goto noarg;
472 tracefile = bmake_strdup(argvalue);
473 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
474 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
477 if (argvalue == NULL) goto noarg;
479 (void)Lst_AtEnd(variables, argvalue);
480 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
481 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
484 parseWarnFatal = TRUE;
487 varNoExportEnv = TRUE;
488 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
491 if (argvalue == NULL) goto noarg;
492 /* If '-d-opts' don't pass to children */
493 if (argvalue[0] == '-')
496 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
497 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
499 parse_debug_options(argvalue);
502 checkEnvFirst = TRUE;
503 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
506 if (argvalue == NULL) goto noarg;
507 (void)Lst_AtEnd(makefiles, argvalue);
511 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
514 if (argvalue == NULL) goto noarg;
516 maxJobs = strtol(argvalue, &p, 0);
517 if (*p != '\0' || maxJobs < 1) {
518 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
522 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
523 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
524 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0);
525 maxJobTokens = maxJobs;
529 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
532 if (argvalue == NULL) goto noarg;
533 /* look for magic parent directory search string */
534 if (strncmp(".../", argvalue, 4) == 0) {
535 if (!Dir_FindHereOrAbove(curdir, argvalue+4,
536 found_path, sizeof(found_path)))
537 break; /* nothing doing */
538 (void)Dir_AddDir(sysIncPath, found_path);
540 (void)Dir_AddDir(sysIncPath, argvalue);
542 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
543 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
547 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
551 /* Kind of nonsensical, wot? */
552 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
556 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
560 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
564 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
572 fprintf(stderr, "getopt(%s) -> %d (%c)\n",
584 * See if the rest of the arguments are variable assignments and
585 * perform them if so. Else take them to be targets and stuff them
586 * on the end of the "create" list.
588 for (; argc > 1; ++argv, --argc)
589 if (Parse_IsVar(argv[1])) {
590 Parse_DoVar(argv[1], VAR_CMD);
593 Punt("illegal (null) argument.");
594 if (*argv[1] == '-' && !dashDash)
596 (void)Lst_AtEnd(create, bmake_strdup(argv[1]));
601 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
607 * Main_ParseArgLine --
608 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
609 * is encountered and by main() when reading the .MAKEFLAGS envariable.
610 * Takes a line of arguments and breaks it into its
611 * component words and passes those words and the number of them to the
612 * MainParseArgs function.
613 * The line should have all its leading whitespace removed.
616 * line Line to fracture
622 * Only those that come from the various arguments.
625 Main_ParseArgLine(const char *line)
627 char **argv; /* Manufactured argument vector */
628 int argc; /* Number of arguments in argv */
629 char *args; /* Space used by the args */
631 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1);
636 for (; *line == ' '; ++line)
644 * $MAKE may simply be naming the make(1) binary
648 if (!(cp = strrchr(line, '/')))
650 if ((cp = strstr(cp, "make")) &&
651 strcmp(cp, "make") == 0)
655 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2);
656 (void)snprintf(buf, len, "%s %s", argv0, line);
660 argv = brk_string(buf, &argc, TRUE, &args);
662 Error("Unterminated quoted string [%s]", buf);
667 MainParseArgs(argc, argv);
674 Main_SetObjdir(const char *path)
678 char buf[MAXPATHLEN + 1];
681 /* expand variable substitutions */
682 if (strchr(path, '$') != 0) {
683 snprintf(buf, MAXPATHLEN, "%s", path);
684 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0);
687 if (path[0] != '/') {
688 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path);
692 /* look for the directory and try to chdir there */
693 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
695 (void)fprintf(stderr, "make warning: %s: %s.\n",
696 path, strerror(errno));
698 strncpy(objdir, path, MAXPATHLEN);
699 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0);
700 setenv("PWD", objdir, 1);
712 * ReadAllMakefiles --
713 * wrapper around ReadMakefile() to read all.
716 * TRUE if ok, FALSE on error
719 ReadAllMakefiles(const void *p, const void *q)
721 return (ReadMakefile(p, q) == 0);
725 str2Lst_Append(Lst lp, char *str, const char *sep)
733 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) {
734 (void)Lst_AtEnd(lp, cp);
743 siginfo(int signo MAKE_ATTR_UNUSED)
745 char dir[MAXPATHLEN];
746 char str[2 * MAXPATHLEN];
748 if (getcwd(dir, sizeof(dir)) == NULL)
750 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir);
752 (void)write(STDERR_FILENO, str, (size_t)len);
757 * Allow makefiles some control over the mode we run in.
760 MakeMode(const char *mode)
765 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0);
768 if (strstr(mode, "compat")) {
773 if (strstr(mode, "meta"))
783 * The main function, for obvious reasons. Initializes variables
784 * and a few modules, then parses the arguments give it in the
785 * environment and on the command line. Reads the system makefile
786 * followed by either Makefile, makefile or the file given by the
787 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
788 * flags it has received by then uses either the Make or the Compat
789 * module to create the initial list of targets.
792 * If -q was given, exits -1 if anything was out-of-date. Else it exits
796 * The program exits when done. Targets are created. etc. etc. etc.
799 main(int argc, char **argv)
801 Lst targs; /* target nodes to create -- passed to Make_Init */
802 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */
804 char *p1, *path, *pwd;
805 char mdpath[MAXPATHLEN];
807 const char *machine = FORCE_MACHINE;
809 const char *machine = getenv("MACHINE");
811 const char *machine_arch = getenv("MACHINE_ARCH");
812 char *syspath = getenv("MAKESYSPATH");
813 Lst sysMkPath; /* Path of sys.mk */
814 char *cp = NULL, *start;
815 /* avoid faults on read-only strings */
816 static char defsyspath[] = _PATH_DEFSYSPATH;
817 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
818 struct timeval rightnow; /* to initialize random seed */
820 struct utsname utsname;
823 /* default to writing debug to stderr */
827 (void)bmake_signal(SIGINFO, siginfo);
830 * Set the seed to produce a different random sequence
831 * on each program execution.
833 gettimeofday(&rightnow, NULL);
834 srandom(rightnow.tv_sec + rightnow.tv_usec);
836 if ((progname = strrchr(argv[0], '/')) != NULL)
842 * get rid of resource limit on file descriptors
846 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
847 rl.rlim_cur != rl.rlim_max) {
848 rl.rlim_cur = rl.rlim_max;
849 (void)setrlimit(RLIMIT_NOFILE, &rl);
855 * Get the name of this type of MACHINE from utsname
856 * so we can share an executable for similar machines.
857 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
859 * Note that both MACHINE and MACHINE_ARCH are decided at
864 if (uname(&utsname) == -1) {
865 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
869 machine = utsname.machine;
872 machine = MAKE_MACHINE;
881 #ifdef MAKE_MACHINE_ARCH
882 machine_arch = MAKE_MACHINE_ARCH;
884 machine_arch = "unknown";
887 machine_arch = MACHINE_ARCH;
891 myPid = getpid(); /* remember this for vFork() */
894 * Just in case MAKEOBJDIR wants us to do something tricky.
896 Var_Init(); /* Initialize the lists of variables for
897 * parsing arguments */
898 Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
899 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
901 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
903 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */
905 * This is the traditional preference for makefiles.
907 #ifndef MAKEFILE_PREFERENCE_LIST
908 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
910 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST,
912 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0);
914 create = Lst_Init(FALSE);
915 makefiles = Lst_Init(FALSE);
918 variables = Lst_Init(FALSE);
919 beSilent = FALSE; /* Print commands as executed */
920 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
921 noExecute = FALSE; /* Execute all commands */
922 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */
923 keepgoing = FALSE; /* Stop on error */
924 allPrecious = FALSE; /* Remove targets when interrupted */
925 queryFlag = FALSE; /* This is not just a check-run */
926 noBuiltins = FALSE; /* Read the built-in rules */
927 touchFlag = FALSE; /* Actually update targets */
928 debug = 0; /* No debug verbosity, please. */
931 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */
932 maxJobTokens = maxJobs;
933 compatMake = FALSE; /* No compat mode */
937 * Initialize the parsing, directory and variable modules to prepare
938 * for the reading of inclusion paths and variable settings on the
943 * Initialize various variables.
944 * MAKE also gets this name, for compatibility
945 * .MAKEFLAGS gets set to the empty string just in case.
946 * MFLAGS also gets initialized empty, for compatibility.
949 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) {
951 * Leave alone if it is an absolute path, or if it does
952 * not contain a '/' in which case we need to find it in
953 * the path, like execvp(3) and the shells do.
958 * A relative path, canonicalize it.
960 p1 = realpath(argv[0], mdpath);
961 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) {
962 p1 = argv[0]; /* realpath failed */
965 Var_Set("MAKE", p1, VAR_GLOBAL, 0);
966 Var_Set(".MAKE", p1, VAR_GLOBAL, 0);
967 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
968 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
969 Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
970 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);
973 * Set some other useful macros
979 if (!(ep = getenv(MAKE_LEVEL))) {
980 #ifdef MAKE_LEVEL_SAFE
981 if (!(ep = getenv(MAKE_LEVEL_SAFE)))
985 Var_Set(MAKE_LEVEL, ep, VAR_GLOBAL, 0);
986 snprintf(tmp, sizeof(tmp), "%u", myPid);
987 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0);
988 snprintf(tmp, sizeof(tmp), "%u", getppid());
989 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0);
994 * First snag any flags out of the MAKE environment variable.
995 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
996 * in a different format).
999 Main_ParseArgLine(getenv("MAKEFLAGS"));
1001 Main_ParseArgLine(getenv("MAKE"));
1005 * Find where we are (now).
1006 * We take care of PWD for the automounter below...
1008 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1009 (void)fprintf(stderr, "%s: getcwd: %s.\n",
1010 progname, strerror(errno));
1014 MainParseArgs(argc, argv);
1017 * Verify that cwd is sane.
1019 if (stat(curdir, &sa) == -1) {
1020 (void)fprintf(stderr, "%s: %s: %s.\n",
1021 progname, curdir, strerror(errno));
1026 * All this code is so that we know where we are when we start up
1027 * on a different machine with pmake.
1028 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1029 * since the value of curdir can vary depending on how we got
1030 * here. Ie sitting at a shell prompt (shell that provides $PWD)
1031 * or via subdir.mk in which case its likely a shell which does
1033 * So, to stop it breaking this case only, we ignore PWD if
1034 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
1036 #ifndef NO_PWD_OVERRIDE
1038 (pwd = getenv("PWD")) != NULL &&
1039 getenv("MAKEOBJDIRPREFIX") == NULL) {
1040 const char *makeobjdir = getenv("MAKEOBJDIR");
1042 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
1043 if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino &&
1044 sa.st_dev == sb.st_dev)
1045 (void)strncpy(curdir, pwd, MAXPATHLEN);
1049 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);
1052 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that,
1053 * MAKEOBJDIR is set in the environment, try only that value
1054 * and fall back to .CURDIR if it does not exist.
1056 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and
1057 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none
1058 * of these paths exist, just use .CURDIR.
1061 (void)Main_SetObjdir(curdir);
1063 if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) {
1064 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir);
1065 (void)Main_SetObjdir(mdpath);
1066 } else if ((path = getenv("MAKEOBJDIR")) != NULL) {
1067 (void)Main_SetObjdir(path);
1069 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine);
1070 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) {
1071 (void)snprintf(mdpath, MAXPATHLEN, "%s%s",
1072 _PATH_OBJDIRPREFIX, curdir);
1073 (void)Main_SetObjdir(mdpath);
1078 * Be compatible if user did not specify -j and did not explicitly
1079 * turned compatibility on
1081 if (!compatMake && !forceJobs) {
1086 * Initialize archive, target and suffix modules in preparation for
1087 * parsing the makefile(s)
1092 Trace_Init(tracefile);
1097 Trace_Log(MAKESTART, NULL);
1100 * Set up the .TARGETS variable to contain the list of targets to be
1101 * created. If none specified, make the variable empty -- the parser
1102 * will fill the thing in with the default or .MAIN target.
1104 if (!Lst_IsEmpty(create)) {
1107 for (ln = Lst_First(create); ln != NULL;
1108 ln = Lst_Succ(ln)) {
1109 char *name = (char *)Lst_Datum(ln);
1111 Var_Append(".TARGETS", name, VAR_GLOBAL);
1114 Var_Set(".TARGETS", "", VAR_GLOBAL, 0);
1118 * If no user-supplied system path was given (through the -m option)
1119 * add the directories from the DEFSYSPATH (more than one may be given
1120 * as dir1:...:dirn) to the system include path.
1122 if (syspath == NULL || *syspath == '\0')
1123 syspath = defsyspath;
1125 syspath = bmake_strdup(syspath);
1127 for (start = syspath; *start != '\0'; start = cp) {
1128 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
1133 /* look for magic parent directory search string */
1134 if (strncmp(".../", start, 4) != 0) {
1135 (void)Dir_AddDir(defIncPath, start);
1137 if (Dir_FindHereOrAbove(curdir, start+4,
1138 found_path, sizeof(found_path))) {
1139 (void)Dir_AddDir(defIncPath, found_path);
1143 if (syspath != defsyspath)
1147 * Read in the built-in rules first, followed by the specified
1148 * makefile, if it was (makefile != NULL), or the default
1149 * makefile and Makefile, in that order, if it wasn't.
1154 sysMkPath = Lst_Init(FALSE);
1155 Dir_Expand(_PATH_DEFSYSMK,
1156 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
1158 if (Lst_IsEmpty(sysMkPath))
1159 Fatal("%s: no system rules (%s).", progname,
1161 ln = Lst_Find(sysMkPath, NULL, ReadMakefile);
1163 Fatal("%s: cannot open %s.", progname,
1164 (char *)Lst_Datum(ln));
1167 if (!Lst_IsEmpty(makefiles)) {
1170 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles);
1172 Fatal("%s: cannot open %s.", progname,
1173 (char *)Lst_Datum(ln));
1175 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}",
1178 (void)str2Lst_Append(makefiles, p1, NULL);
1179 (void)Lst_Find(makefiles, NULL, ReadMakefile);
1184 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1185 if (!noBuiltins || !printVars) {
1186 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}",
1188 doing_depend = TRUE;
1189 (void)ReadMakefile(makeDependfile, NULL);
1190 doing_depend = FALSE;
1195 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
1200 Job_ServerStart(maxJobTokens, jp_0, jp_1);
1202 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1203 jp_0, jp_1, maxJobs, maxJobTokens, compatMake);
1205 Main_ExportMAKEFLAGS(TRUE); /* initial export */
1207 #ifndef NO_CHECK_MAKE_CHDIR
1208 Check_Cwd_av(0, NULL, 0); /* initialize it */
1212 * For compatibility, look at the directories in the VPATH variable
1213 * and add them to the search path, if the variable is defined. The
1214 * variable's value is in the same format as the PATH envariable, i.e.
1215 * <directory>:<directory>:<directory>...
1217 if (Var_Exists("VPATH", VAR_CMD)) {
1220 * GCC stores string constants in read-only memory, but
1221 * Var_Subst will want to write this thing, so store it
1224 static char VPATH[] = "${VPATH}";
1226 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE);
1229 /* skip to end of directory */
1230 for (cp = path; *cp != ':' && *cp != '\0'; cp++)
1232 /* Save terminator character so know when to stop */
1235 /* Add directory to search path */
1236 (void)Dir_AddDir(dirSearchPath, path);
1239 } while (savec == ':');
1244 * Now that all search paths have been read for suffixes et al, it's
1245 * time to add the default search path to their lists...
1250 * Propagate attributes through :: dependency lists.
1254 /* print the initial graph, if the user requested it */
1258 /* print the values of any variables requested by the user */
1266 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE);
1267 for (ln = Lst_First(variables); ln != NULL;
1268 ln = Lst_Succ(ln)) {
1269 char *var = (char *)Lst_Datum(ln);
1272 if (strchr(var, '$')) {
1273 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0);
1274 } else if (expandVars) {
1277 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp)))
1278 Fatal("%s: variable name too big: %s",
1280 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
1282 value = Var_Value(var, VAR_GLOBAL, &p1);
1284 printf("%s\n", value ? value : "");
1290 * Have now read the entire graph and need to make a list of
1291 * targets to create. If none was given on the command line,
1292 * we consult the parsing module to find the main target(s)
1295 if (Lst_IsEmpty(create))
1296 targs = Parse_MainName();
1298 targs = Targ_FindList(create, TARG_CREATE);
1302 * Initialize job module before traversing the graph
1303 * now that any .BEGIN and .END targets have been read.
1304 * This is done only if the -q flag wasn't given
1305 * (to prevent the .BEGIN from being executed should
1313 /* Traverse the graph, checking on all the targets */
1314 outOfDate = Make_Run(targs);
1317 * Compat_Init will take care of creating all the
1318 * targets as well as initializing the module.
1325 Lst_Destroy(targs, NULL);
1326 Lst_Destroy(variables, NULL);
1327 Lst_Destroy(makefiles, NULL);
1328 Lst_Destroy(create, (FreeProc *)free);
1331 /* print the graph now it's been processed if the user requested it */
1335 Trace_Log(MAKEEND, 0);
1346 return outOfDate ? 1 : 0;
1351 * Open and parse the given makefile.
1354 * 0 if ok. -1 if couldn't open file.
1360 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED)
1362 const char *fname = p; /* makefile to read */
1364 size_t len = MAXPATHLEN;
1365 char *name, *path = bmake_malloc(len);
1367 if (!strcmp(fname, "-")) {
1368 Parse_File(NULL /*stdin*/, -1);
1369 Var_Set("MAKEFILE", "", VAR_GLOBAL, 0);
1371 /* if we've chdir'd, rebuild the path name */
1372 if (strcmp(curdir, objdir) && *fname != '/') {
1373 size_t plen = strlen(curdir) + strlen(fname) + 2;
1375 path = bmake_realloc(path, len = 2 * plen);
1377 (void)snprintf(path, len, "%s/%s", curdir, fname);
1378 fd = open(path, O_RDONLY);
1384 /* If curdir failed, try objdir (ala .depend) */
1385 plen = strlen(objdir) + strlen(fname) + 2;
1387 path = bmake_realloc(path, len = 2 * plen);
1388 (void)snprintf(path, len, "%s/%s", objdir, fname);
1389 fd = open(path, O_RDONLY);
1395 fd = open(fname, O_RDONLY);
1399 /* look in -I and system include directories. */
1400 name = Dir_FindFile(fname, parseIncPath);
1402 name = Dir_FindFile(fname,
1403 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1404 if (!name || (fd = open(name, O_RDONLY)) == -1) {
1412 * set the MAKEFILE variable desired by System V fans -- the
1413 * placement of the setting here means it gets set to the last
1414 * makefile specified, as it is set by SysV make.
1418 Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0);
1419 Parse_File(fname, fd);
1427 * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR
1428 * in situations that would not arrise with ./obj (links or not).
1429 * This tends to break things like:
1434 * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as
1435 * opposed to an argument) in a command line and if so returns
1436 * ${.CURDIR} so caller can chdir() so that the assumptions made by
1437 * the Makefile hold true.
1439 * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped.
1441 * The chdir() only happens in the child process, and does nothing if
1442 * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it
1443 * should not break anything. Also if NOCHECKMAKECHDIR is set we
1444 * do nothing - to ensure historic semantics can be retained.
1446 #ifdef NO_CHECK_MAKE_CHDIR
1463 static int Check_Cwd_Off = 0;
1466 Check_Cwd_av(int ac, char **av, int copy)
1468 static char *make[4];
1469 static char *cur_dir = NULL;
1472 int is_cmd, next_cmd;
1476 if (Check_Cwd_Off) {
1478 fprintf(debug_file, "check_cwd: check is off.\n");
1482 if (make[0] == NULL) {
1483 if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) {
1486 fprintf(debug_file, "check_cwd: turning check off.\n");
1490 make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp);
1491 if ((make[0] = strrchr(make[1], '/')) == NULL) {
1497 cur_dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
1499 if (ac == 0 || av == NULL) {
1501 fprintf(debug_file, "check_cwd: empty command.\n");
1502 return NULL; /* initialization only */
1505 if (getenv("MAKEOBJDIR") == NULL &&
1506 getenv("MAKEOBJDIRPREFIX") == NULL) {
1508 fprintf(debug_file, "check_cwd: no obj dirs.\n");
1514 for (i = 0; i < ac; ++i) {
1518 cp = &(av[i])[n - 1];
1519 if (strspn(av[i], "|&;") == (size_t)n) {
1522 } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') {
1527 } while (*cp == ';' || *cp == '&' || *cp == '|' ||
1528 *cp == ')' || *cp == '}') ;
1531 * XXX this should not happen.
1533 fprintf(stderr, "%s: WARNING: raw arg ends in shell meta '%s'\n",
1540 if (*cp == ';' || *cp == '&' || *cp == '|')
1544 fprintf(debug_file, "av[%d] == %s '%s'",
1545 i, (is_cmd) ? "cmd" : "arg", av[i]);
1547 if (*cp == '(' || *cp == '{' ||
1548 *cp == ';' || *cp == '&' || *cp == '|') {
1551 } while (*cp == '(' || *cp == '{' ||
1552 *cp == ';' || *cp == '&' || *cp == '|');
1558 if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) {
1560 fprintf(debug_file, " == cd, done.\n");
1563 for (mp = make; *mp != NULL; ++mp) {
1565 if (strcmp(cp, *mp) == 0) {
1567 fprintf(debug_file, " %s == '%s', chdir(%s)\n",
1574 fprintf(debug_file, "\n");
1580 Check_Cwd_Cmd(const char *cmd)
1590 av = brk_string(cmd, &ac, TRUE, &bp);
1592 fprintf(debug_file, "splitting: '%s' -> %d words\n",
1599 cp = Check_Cwd_av(ac, av, 1);
1608 Check_Cwd(const char **argv)
1616 for (ac = 0; argv[ac] != NULL; ++ac)
1618 if (ac == 3 && *argv[1] == '-') {
1619 cp = Check_Cwd_Cmd(argv[2]);
1621 cp = Check_Cwd_av(ac, UNCONST(argv), 0);
1627 #endif /* NO_CHECK_MAKE_CHDIR */
1631 * Execute the command in cmd, and return the output of that command
1635 * A string containing the output of the command, or the empty string
1636 * If errnum is not NULL, it contains the reason for the command failure
1639 * The string must be freed by the caller.
1642 Cmd_Exec(const char *cmd, const char **errnum)
1644 const char *args[4]; /* Args for invoking the shell */
1645 int fds[2]; /* Pipe streams */
1646 int cpid; /* Child PID */
1647 int pid; /* PID from wait() */
1648 char *res; /* result */
1649 WAIT_T status; /* command exit status */
1650 Buffer buf; /* buffer to store the result */
1660 * Set up arguments for shell
1662 args[0] = shellName;
1668 * Open a pipe for fetching its output
1670 if (pipe(fds) == -1) {
1671 *errnum = "Couldn't create pipe for \"%s\"";
1678 switch (cpid = vFork()) {
1681 * Close input side of pipe
1683 (void)close(fds[0]);
1686 * Duplicate the output stream to the shell's output, then
1687 * shut the extra thing down. Note we don't fetch the error
1688 * stream...why not? Why?
1690 (void)dup2(fds[1], 1);
1691 (void)close(fds[1]);
1695 (void)execv(shellPath, UNCONST(args));
1700 *errnum = "Couldn't exec \"%s\"";
1705 * No need for the writing half
1707 (void)close(fds[1]);
1712 char result[BUFSIZ];
1713 cc = read(fds[0], result, sizeof(result));
1715 Buf_AddBytes(&buf, cc, result);
1717 while (cc > 0 || (cc == -1 && errno == EINTR));
1720 * Close the input side of the pipe.
1722 (void)close(fds[0]);
1725 * Wait for the process to exit.
1727 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) {
1728 JobReapChild(pid, status, FALSE);
1731 cc = Buf_Size(&buf);
1732 res = Buf_Destroy(&buf, FALSE);
1735 *errnum = "Couldn't read shell's output for \"%s\"";
1737 if (WIFSIGNALED(status))
1738 *errnum = "\"%s\" exited on a signal";
1739 else if (WEXITSTATUS(status) != 0)
1740 *errnum = "\"%s\" returned non-zero status";
1743 * Null-terminate the result, convert newlines to spaces and
1744 * install it in the variable.
1749 if (cc > 0 && *--cp == '\n') {
1751 * A final newline is just stripped
1765 res = bmake_malloc(1);
1772 * Print an error message given its format.
1778 * The message is printed.
1782 Error(const char *fmt, ...)
1787 err_file = debug_file;
1788 if (err_file == stdout)
1790 (void)fflush(stdout);
1793 fprintf(err_file, "%s: ", progname);
1794 (void)vfprintf(err_file, fmt, ap);
1796 (void)fprintf(err_file, "\n");
1797 (void)fflush(err_file);
1798 if (err_file == stderr)
1806 * Produce a Fatal error message. If jobs are running, waits for them
1817 Fatal(const char *fmt, ...)
1825 (void)fflush(stdout);
1826 (void)vfprintf(stderr, fmt, ap);
1828 (void)fprintf(stderr, "\n");
1829 (void)fflush(stderr);
1831 PrintOnError(NULL, NULL);
1833 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1835 Trace_Log(MAKEERROR, 0);
1836 exit(2); /* Not 1 so -q can distinguish error */
1841 * Major exception once jobs are being created. Kills all jobs, prints
1842 * a message and exits.
1848 * All children are killed indiscriminately and the program Lib_Exits
1852 Punt(const char *fmt, ...)
1857 (void)fflush(stdout);
1858 (void)fprintf(stderr, "%s: ", progname);
1859 (void)vfprintf(stderr, fmt, ap);
1861 (void)fprintf(stderr, "\n");
1862 (void)fflush(stderr);
1864 PrintOnError(NULL, NULL);
1871 * Exit without giving a message.
1886 Trace_Log(MAKEERROR, 0);
1887 exit(2); /* Not 1, so -q can distinguish error */
1892 * Called when aborting due to errors in child shell to signal
1903 /* number of errors encountered in Make_Make */
1905 Fatal("%d error%s", errors, errors == 1 ? "" : "s");
1910 * Remove a file carefully, avoiding directories.
1913 eunlink(const char *file)
1917 if (lstat(file, &st) == -1)
1920 if (S_ISDIR(st.st_mode)) {
1924 return unlink(file);
1929 * Print why exec failed, avoiding stdio.
1932 execError(const char *af, const char *av)
1936 struct iovec iov[8];
1938 (void)(iov[i].iov_base = UNCONST(s), \
1939 iov[i].iov_len = strlen(iov[i].iov_base), \
1942 #define IOADD(s) (void)write(2, s, strlen(s))
1950 IOADD(") failed (");
1951 IOADD(strerror(errno));
1955 (void)writev(2, iov, 8);
1961 * exit with usage message
1966 (void)fprintf(stderr,
1967 "usage: %s [-BeikNnqrstWX] \n\
1968 [-C directory] [-D variable] [-d flags] [-f makefile]\n\
1969 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\
1970 [-V variable] [variable=value] [target ...]\n", progname);
1976 PrintAddr(void *a, void *b)
1978 printf("%lx ", (unsigned long) a);
1985 PrintOnError(GNode *gn, const char *s)
1987 static GNode *en = NULL;
1994 printf("\n%s: stopped in %s\n", progname, curdir);
1997 return; /* we've been here! */
2000 * We can print this even if there is no .ERROR target.
2002 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0);
2004 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
2006 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
2013 * Finally, see if there is a .ERROR target, and run it if so.
2015 en = Targ_FindNode(".ERROR", TARG_NOCREATE);
2017 en->type |= OP_SPECIAL;
2018 Compat_Make(en, en);
2023 Main_ExportMAKEFLAGS(Boolean first)
2025 static int once = 1;
2033 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
2035 s = Var_Subst(NULL, tmp, VAR_CMD, 0);
2038 setenv("MAKEFLAGS", s, 1);
2040 setenv("MAKE", s, 1);
2048 static char *tmpdir = NULL;
2054 * Honor $TMPDIR but only if it is valid.
2055 * Ensure it ends with /.
2057 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0);
2058 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
2060 tmpdir = bmake_strdup(_PATH_TMP);
2067 * Create and open a temp file using "pattern".
2068 * If "fnamep" is provided set it to a copy of the filename created.
2069 * Otherwise unlink the file once open.
2072 mkTempFile(const char *pattern, char **fnamep)
2074 static char *tmpdir = NULL;
2075 char tfile[MAXPATHLEN];
2081 tmpdir = getTmpdir();
2082 if (pattern[0] == '/') {
2083 snprintf(tfile, sizeof(tfile), "%s", pattern);
2085 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern);
2087 if ((fd = mkstemp(tfile)) < 0)
2088 Punt("Could not create temporary file %s: %s", tfile, strerror(errno));
2090 *fnamep = bmake_strdup(tfile);
2092 unlink(tfile); /* we just want the descriptor */
2099 * Return a Boolean based on setting of a knob.
2101 * If the knob is not set, the supplied default is the return value.
2102 * If set, anything that looks or smells like "No", "False", "Off", "0" etc,
2103 * is FALSE, otherwise TRUE.
2106 getBoolean(const char *name, Boolean bf)
2111 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) {
2112 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
2116 case '\0': /* not set - the default wins */