2 * Copyright (c) 1988, 1989, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1989 by Berkeley Softworks
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. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)main.c 8.3 (Berkeley) 3/19/94
43 static char copyright[] =
44 "@(#) Copyright (c) 1988, 1989, 1990, 1993\n\
45 The Regents of the University of California. All rights reserved.\n";
48 #include <sys/cdefs.h>
49 __FBSDID("$FreeBSD$");
53 * The main file for this entire program. Exit routines etc
56 * Utility functions defined in this file:
58 * Takes a line of arguments, breaks them and
59 * treats them as if they were given when first
60 * invoked. Used by the parse module to implement
64 #include <sys/param.h>
66 #include <sys/sysctl.h>
68 #include <sys/queue.h>
69 #include <sys/resource.h>
70 #include <sys/utsname.h>
87 #include "pathnames.h"
95 extern char **environ; /* XXX what header declares this variable? */
97 #define WANT_ENV_MKLVL 1
98 #define MKLVL_MAXVAL 500
99 #define MKLVL_ENVVAR "__MKLVL__"
101 /* ordered list of makefiles to read */
102 static Lst makefiles = Lst_Initializer(makefiles);
104 /* ordered list of source makefiles */
105 static Lst source_makefiles = Lst_Initializer(source_makefiles);
107 /* list of variables to print */
108 static Lst variables = Lst_Initializer(variables);
110 static Boolean expandVars; /* fully expand printed variables */
111 static Boolean noBuiltins; /* -r flag */
112 static Boolean forceJobs; /* -j argument given */
113 static char *curdir; /* startup directory */
114 static char *objdir; /* where we chdir'ed to */
115 static char **save_argv; /* saved argv */
116 static char *save_makeflags;/* saved MAKEFLAGS */
118 /* (-E) vars to override from env */
119 Lst envFirstVars = Lst_Initializer(envFirstVars);
121 /* Targets to be made */
122 Lst create = Lst_Initializer(create);
124 Boolean allPrecious; /* .PRECIOUS given on line by itself */
125 Boolean is_posix; /* .POSIX target seen */
126 Boolean mfAutoDeps; /* .MAKEFILEDEPS target seen */
127 Boolean beSilent; /* -s flag */
128 Boolean beVerbose; /* -v flag */
129 Boolean compatMake; /* -B argument */
130 int debug; /* -d flag */
131 Boolean ignoreErrors; /* -i flag */
132 int jobLimit; /* -j argument */
133 int makeErrors; /* Number of targets not remade due to errors */
134 Boolean jobsRunning; /* TRUE if the jobs might be running */
135 Boolean keepgoing; /* -k flag */
136 Boolean noExecute; /* -n flag */
137 Boolean printGraphOnly; /* -p flag */
138 Boolean queryFlag; /* -q flag */
139 Boolean touchFlag; /* -t flag */
140 Boolean usePipes; /* !-P flag */
141 uint32_t warn_cmd; /* command line warning flags */
142 uint32_t warn_flags; /* actual warning flags */
143 uint32_t warn_nocmd; /* command line no-warning flags */
145 time_t now; /* Time at start of make */
146 struct GNode *DEFAULT; /* .DEFAULT node */
149 * Exit with usage message.
155 "usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]\n"
156 "\t[-d flags] [-E variable] [-f makefile] [-I directory]\n"
157 "\t[-j max_jobs] [-m directory] [-V variable]\n"
158 "\t[variable=value] [target ...]\n");
164 * Append a flag with an optional argument to MAKEFLAGS and MFLAGS
167 MFLAGS_append(const char *flag, char *arg)
171 Var_Append(".MAKEFLAGS", flag, VAR_GLOBAL);
173 str = MAKEFLAGS_quote(arg);
174 Var_Append(".MAKEFLAGS", str, VAR_GLOBAL);
178 Var_Append("MFLAGS", flag, VAR_GLOBAL);
180 str = MAKEFLAGS_quote(arg);
181 Var_Append("MFLAGS", str, VAR_GLOBAL);
189 * Handle argument to warning option.
192 Main_ParseWarn(const char *arg, int iscmd)
196 static const struct {
200 { "dirsyntax", WARN_DIRSYNTAX },
205 if (arg[0] == 'n' && arg[1] == 'o') {
210 for (i = 0; options[i].option != NULL; i++)
211 if (strcmp(arg, options[i].option) == 0)
214 if (options[i].option == NULL)
220 warn_cmd |= options[i].flag;
221 warn_nocmd &= ~options[i].flag;
222 warn_flags |= options[i].flag;
224 warn_nocmd |= options[i].flag;
225 warn_cmd &= ~options[i].flag;
226 warn_flags &= ~options[i].flag;
230 warn_flags |= (options[i].flag & ~warn_nocmd);
232 warn_flags &= ~(options[i].flag | warn_cmd);
239 * Open and parse the given makefile.
242 * TRUE if ok. FALSE if couldn't open file.
245 ReadMakefile(const char p[])
247 char *fname, *fnamesave; /* makefile to read */
249 char *name, path[MAXPATHLEN];
253 /* XXX - remove this once constification is done */
254 fnamesave = fname = estrdup(p);
256 if (!strcmp(fname, "-")) {
257 Parse_File("(stdin)", stdin);
258 Var_SetGlobal("MAKEFILE", "");
260 setMAKEFILE = strcmp(fname, ".depend");
262 /* if we've chdir'd, rebuild the path name */
263 if (curdir != objdir && *fname != '/') {
264 snprintf(path, MAXPATHLEN, "%s/%s", curdir, fname);
266 * XXX The realpath stuff breaks relative includes
267 * XXX in some cases. The problem likely is in
268 * XXX parse.c where it does special things in
269 * XXX ParseDoInclude if the file is relateive
270 * XXX or absolute and not a system file. There
271 * XXX it assumes that if the current file that's
272 * XXX being included is absolute, that any files
273 * XXX that it includes shouldn't do the -I path
274 * XXX stuff, which is inconsistant with historical
275 * XXX behavior. However, I can't pentrate the mists
276 * XXX further, so I'm putting this workaround in
277 * XXX here until such time as the underlying bug
280 #if THIS_BREAKS_THINGS
281 if (realpath(path, path) != NULL &&
282 (stream = fopen(path, "r")) != NULL) {
287 } else if (realpath(fname, path) != NULL) {
290 if ((stream = fopen(fname, "r")) != NULL)
294 if ((stream = fopen(path, "r")) != NULL) {
301 if ((stream = fopen(fname, "r")) != NULL)
305 /* look in -I and system include directories. */
306 name = Path_FindFile(fname, &parseIncPath);
308 name = Path_FindFile(fname, &sysIncPath);
309 if (!name || !(stream = fopen(name, "r"))) {
313 MAKEFILE = fname = name;
315 * set the MAKEFILE variable desired by System V fans -- the
316 * placement of the setting here means it gets set to the last
317 * makefile specified, as it is set by SysV make.
321 Var_SetGlobal("MAKEFILE", MAKEFILE);
322 Parse_File(fname, stream);
329 * Open and parse the given makefile.
330 * If open is successful add it to the list of makefiles.
333 * TRUE if ok. FALSE if couldn't open file.
336 TryReadMakefile(const char p[])
339 LstNode *last = Lst_Last(&source_makefiles);
341 if (!ReadMakefile(p))
346 LstNode *first = Lst_First(&source_makefiles);
347 Lst_Insert(&source_makefiles, first, data);
349 Lst_Append(&source_makefiles, last, estrdup(p));
355 * Parse a given argument vector. Called from main() and from
356 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
358 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
361 * Various global and local flags will be set depending on the flags
365 MainParseArgs(int argc, char **argv)
368 Boolean found_dd = FALSE;
371 optind = 1; /* since we're called more than once */
373 #define OPTFLAGS "ABC:D:E:I:PSV:Xd:ef:ij:km:npqrstvx:"
375 if ((optind < argc) && strcmp(argv[optind], "--") == 0) {
378 if ((c = getopt(argc, argv, OPTFLAGS)) == -1) {
385 MFLAGS_append("-A", NULL);
388 if (chdir(optarg) == -1)
389 err(1, "chdir %s", optarg);
392 Var_SetGlobal(optarg, "1");
393 MFLAGS_append("-D", optarg);
396 Parse_AddIncludeDir(optarg);
397 MFLAGS_append("-I", optarg);
400 Lst_AtEnd(&variables, estrdup(optarg));
401 MFLAGS_append("-V", optarg);
408 MFLAGS_append("-B", NULL);
409 unsetenv("MAKE_JOBS_FIFO");
413 MFLAGS_append("-P", NULL);
417 MFLAGS_append("-S", NULL);
420 char *modules = optarg;
422 for (; *modules; ++modules)
440 if (modules[1] == '1') {
441 debug |= DEBUG_GRAPH1;
444 else if (modules[1] == '2') {
445 debug |= DEBUG_GRAPH2;
468 warnx("illegal argument to d option "
472 MFLAGS_append("-d", optarg);
476 Lst_AtEnd(&envFirstVars, estrdup(optarg));
477 MFLAGS_append("-E", optarg);
480 checkEnvFirst = TRUE;
481 MFLAGS_append("-e", NULL);
484 Lst_AtEnd(&makefiles, estrdup(optarg));
488 MFLAGS_append("-i", NULL);
494 jobLimit = strtol(optarg, &endptr, 10);
495 if (jobLimit <= 0 || *endptr != '\0') {
496 warnx("illegal number, -j argument -- %s",
500 MFLAGS_append("-j", optarg);
505 MFLAGS_append("-k", NULL);
508 Path_AddDir(&sysIncPath, optarg);
509 MFLAGS_append("-m", optarg);
513 MFLAGS_append("-n", NULL);
516 printGraphOnly = TRUE;
517 debug |= DEBUG_GRAPH1;
521 /* Kind of nonsensical, wot? */
522 MFLAGS_append("-q", NULL);
526 MFLAGS_append("-r", NULL);
530 MFLAGS_append("-s", NULL);
534 MFLAGS_append("-t", NULL);
538 MFLAGS_append("-v", NULL);
541 if (Main_ParseWarn(optarg, 1) != -1)
542 MFLAGS_append("-x", optarg);
556 * Parse the rest of the arguments.
557 * o Check for variable assignments and perform them if so.
558 * o Check for more flags and restart getopt if so.
559 * o Anything else is taken to be a target and added
560 * to the end of the "create" list.
562 for (; *argv != NULL; ++argv, --argc) {
563 if (Parse_IsVar(*argv)) {
564 char *ptr = MAKEFLAGS_quote(*argv);
565 char *v = estrdup(*argv);
567 Var_Append(".MAKEFLAGS", ptr, VAR_GLOBAL);
568 Parse_DoVar(v, VAR_CMD);
572 } else if ((*argv)[0] == '-') {
573 if ((*argv)[1] == '\0') {
575 * (*argv) is a single dash, so we
578 } else if (found_dd) {
580 * Double dash has been found, ignore
581 * any more options. But what do we do
582 * with it? For now treat it like a target.
584 Lst_AtEnd(&create, estrdup(*argv));
587 * (*argv) is a -flag, so backup argv and
588 * argc. getopt() expects options to start
589 * in the 2nd position.
596 } else if ((*argv)[0] == '\0') {
597 Punt("illegal (null) argument.");
600 Lst_AtEnd(&create, estrdup(*argv));
607 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
608 * is encountered and by main() when reading the .MAKEFLAGS envariable.
609 * Takes a line of arguments and breaks it into its
610 * component words and passes those words and the number of them to the
611 * MainParseArgs function.
612 * The line should have all its leading whitespace removed.
615 * Only those that come from the various arguments.
618 Main_ParseArgLine(char *line, int mflags)
624 for (; *line == ' '; ++line)
630 MAKEFLAGS_break(&aa, line);
632 brk_string(&aa, line, TRUE);
634 MainParseArgs(aa.argc, aa.argv);
639 chdir_verify_path(const char *path, char *obpath)
643 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
644 if (chdir(path) == -1 || getcwd(obpath, MAXPATHLEN) == NULL) {
645 warn("warning: %s", path);
655 * In lieu of a good way to prevent every possible looping in make(1), stop
656 * there from being more than MKLVL_MAXVAL processes forked by make(1), to
657 * prevent a forkbomb from happening, in a dumb and mechanical way.
660 * Creates or modifies enviornment variable MKLVL_ENVVAR via setenv().
663 check_make_level(void)
665 #ifdef WANT_ENV_MKLVL
666 char *value = getenv(MKLVL_ENVVAR);
667 int level = (value == NULL) ? 0 : atoi(value);
670 errc(2, EAGAIN, "Invalid value for recursion level (%d).",
672 } else if (level > MKLVL_MAXVAL) {
673 errc(2, EAGAIN, "Max recursion level (%d) exceeded.",
677 sprintf(new_value, "%d", level + 1);
678 setenv(MKLVL_ENVVAR, new_value, 1);
680 #endif /* WANT_ENV_MKLVL */
684 * Main_AddSourceMakefile
685 * Add a file to the list of source makefiles
688 Main_AddSourceMakefile(const char *name)
691 Lst_AtEnd(&source_makefiles, estrdup(name));
696 * Remake all the makefiles
699 Remake_Makefiles(void)
705 Compat_InstallSignalHandlers();
706 if (curdir != objdir) {
707 if (chdir(curdir) < 0)
708 Fatal("Failed to change directory to %s.", curdir);
711 LST_FOREACH(ln, &source_makefiles) {
714 const char *name = Lst_Datum(ln);
715 Boolean saveTouchFlag = touchFlag;
716 Boolean saveQueryFlag = queryFlag;
717 Boolean saveNoExecute = noExecute;
723 gn = Targ_FindNode(name, TARG_CREATE);
724 DEBUGF(MAKE, ("Checking %s...", gn->name));
728 * ! dependencies as well as
729 * dependencies with .FORCE, .EXEC and .PHONY attributes
730 * are skipped to prevent infinite loops
732 if (gn->type & (OP_FORCE | OP_EXEC | OP_PHONY)) {
733 DEBUGF(MAKE, ("skipping (force, exec or phony).\n",
739 * Skip :: targets that have commands and no children
740 * because such targets are always out-of-date
742 if ((gn->type & OP_DOUBLEDEP) &&
743 !Lst_IsEmpty(&gn->commands) &&
744 Lst_IsEmpty(&gn->children)) {
745 DEBUGF(MAKE, ("skipping (doubledep, no sources "
746 "and has commands).\n"));
751 * Skip targets without sources and without commands
753 if (Lst_IsEmpty(&gn->commands) &&
754 Lst_IsEmpty(&gn->children)) {
756 ("skipping (no sources and no commands).\n"));
760 DEBUGF(MAKE, ("\n"));
763 * -t, -q and -n has no effect unless the makefile is
764 * specified as one of the targets explicitly in the
767 LST_FOREACH(ln2, &create) {
768 if (!strcmp(gn->name, Lst_Datum(ln2))) {
769 /* found as a target */
780 * Check and remake the makefile
782 mtime = Dir_MTime(gn);
786 * Restore -t, -q and -n behaviour
788 touchFlag = saveTouchFlag;
789 queryFlag = saveQueryFlag;
790 noExecute = saveNoExecute;
793 * Compat_Make will leave the 'made' field of gn
794 * in one of the following states:
795 * UPTODATE gn was already up-to-date
796 * MADE gn was recreated successfully
797 * ERROR An error occurred while gn was being created
798 * ABORTED gn was not remade because one of its inferiors
799 * could not be made due to errors.
801 if (gn->made == MADE) {
802 if (mtime != Dir_MTime(gn)) {
804 ("%s updated (%d -> %d).\n",
805 gn->name, mtime, gn->mtime));
809 ("%s not updated: skipping restart.\n",
812 } else if (gn->made == ERROR)
814 else if (gn->made == ABORTED) {
815 printf("`%s' not remade because of errors.\n",
818 } else if (gn->made == UPTODATE) {
822 Lst_EnQueue(&examine, gn);
823 while (!Lst_IsEmpty(&examine)) {
825 GNode *egn = Lst_DeQueue(&examine);
828 LST_FOREACH(eln, &egn->children) {
829 GNode *cgn = Lst_Datum(eln);
831 Lst_EnQueue(&examine, cgn);
838 Fatal("Failed to remake Makefiles.");
839 if (remade_cnt > 0) {
840 DEBUGF(MAKE, ("Restarting `%s'.\n", save_argv[0]));
843 * Some of makefiles were remade -- restart from clean state
845 if (save_makeflags != NULL)
846 setenv("MAKEFLAGS", save_makeflags, 1);
848 unsetenv("MAKEFLAGS");
849 if (execvp(save_argv[0], save_argv) < 0) {
850 Fatal("Can't restart `%s': %s.",
851 save_argv[0], strerror(errno));
855 if (curdir != objdir) {
856 if (chdir(objdir) < 0)
857 Fatal("Failed to change directory to %s.", objdir);
863 * The main function, for obvious reasons. Initializes variables
864 * and a few modules, then parses the arguments give it in the
865 * environment and on the command line. Reads the system makefile
866 * followed by either Makefile, makefile or the file given by the
867 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
868 * flags it has received by then uses either the Make or the Compat
869 * module to create the initial list of targets.
872 * If -q was given, exits -1 if anything was out-of-date. Else it exits
876 * The program exits when done. Targets are created. etc. etc. etc.
879 main(int argc, char **argv)
882 const char *machine_arch;
883 const char *machine_cpu;
884 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */
888 char mdpath[MAXPATHLEN];
889 char obpath[MAXPATHLEN];
890 char cdpath[MAXPATHLEN];
891 char *cp = NULL, *start;
894 save_makeflags = getenv("MAKEFLAGS");
895 if (save_makeflags != NULL)
896 save_makeflags = estrdup(save_makeflags);
899 * Initialize file global variables.
902 noBuiltins = FALSE; /* Read the built-in rules */
903 forceJobs = FALSE; /* No -j flag */
907 * Initialize program global variables.
909 beSilent = FALSE; /* Print commands as executed */
910 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
911 noExecute = FALSE; /* Execute all commands */
912 printGraphOnly = FALSE; /* Don't stop after printing graph */
913 keepgoing = FALSE; /* Stop on error */
914 allPrecious = FALSE; /* Remove targets when interrupted */
915 queryFlag = FALSE; /* This is not just a check-run */
916 touchFlag = FALSE; /* Actually update targets */
917 usePipes = TRUE; /* Catch child output in pipes */
918 debug = 0; /* No debug verbosity, please. */
921 jobLimit = DEFMAXJOBS;
922 compatMake = FALSE; /* No compat mode */
928 * get rid of resource limit on file descriptors
932 if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
935 rl.rlim_cur = rl.rlim_max;
936 if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
943 * Prior to 7.0, FreeBSD/pc98 kernel used to set the
944 * utsname.machine to "i386", and MACHINE was defined as
945 * "i386", so it could not be distinguished from FreeBSD/i386.
946 * Therefore, we had to check machine.ispc98 and adjust the
947 * MACHINE variable. NOTE: The code is still here to be able
948 * to compile new make binary on old FreeBSD/pc98 systems, and
949 * have the MACHINE variable set properly.
951 if ((machine = getenv("MACHINE")) == NULL) {
955 len = sizeof(ispc98);
956 if (!sysctlbyname("machdep.ispc98", &ispc98, &len, NULL, 0)) {
963 * Get the name of this type of MACHINE from utsname
964 * so we can share an executable for similar machines.
965 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
967 * Note that both MACHINE and MACHINE_ARCH are decided at
970 if (machine == NULL) {
971 static struct utsname utsname;
973 if (uname(&utsname) == -1)
975 machine = utsname.machine;
978 if ((machine_arch = getenv("MACHINE_ARCH")) == NULL) {
980 machine_arch = MACHINE_ARCH;
982 machine_arch = "unknown";
987 * Set machine_cpu to the minumum supported CPU revision based
988 * on the target architecture, if not already set.
990 if ((machine_cpu = getenv("MACHINE_CPU")) == NULL) {
991 if (!strcmp(machine_arch, "i386"))
992 machine_cpu = "i386";
993 else if (!strcmp(machine_arch, "alpha"))
996 machine_cpu = "unknown";
1000 * Initialize the parsing, directory and variable modules to prepare
1001 * for the reading of inclusion paths and variable settings on the
1006 Dir_Init(); /* Initialize directory structures so -I flags
1007 * can be processed correctly */
1008 Var_Init(environ); /* As well as the lists of variables for
1009 * parsing arguments */
1012 * Initialize the Shell so that we have a shell for != assignments
1013 * on the command line.
1018 * Initialize various variables.
1019 * MAKE also gets this name, for compatibility
1020 * .MAKEFLAGS gets set to the empty string just in case.
1021 * MFLAGS also gets initialized empty, for compatibility.
1023 Var_SetGlobal("MAKE", argv[0]);
1024 Var_SetGlobal(".MAKEFLAGS", "");
1025 Var_SetGlobal("MFLAGS", "");
1026 Var_SetGlobal("MACHINE", machine);
1027 Var_SetGlobal("MACHINE_ARCH", machine_arch);
1028 Var_SetGlobal("MACHINE_CPU", machine_cpu);
1030 Var_SetGlobal("MAKE_VERSION", MAKE_VERSION);
1032 Var_SetGlobal(".newline", "\n"); /* handy for :@ loops */
1036 snprintf(tmp, sizeof(tmp), "%u", getpid());
1037 Var_SetGlobal(".MAKE.PID", tmp);
1038 snprintf(tmp, sizeof(tmp), "%u", getppid());
1039 Var_SetGlobal(".MAKE.PPID", tmp);
1044 * First snag things out of the MAKEFLAGS environment
1045 * variable. Then parse the command line arguments.
1047 Main_ParseArgLine(getenv("MAKEFLAGS"), 1);
1049 MainParseArgs(argc, argv);
1052 * Find where we are...
1054 if (getcwd(curdir, MAXPATHLEN) == NULL)
1060 if (stat(curdir, &sa) == -1)
1061 err(2, "%s", curdir);
1065 * The object directory location is determined using the
1066 * following order of preference:
1068 * 1. MAKEOBJDIRPREFIX`cwd`
1070 * 3. PATH_OBJDIR.${MACHINE}
1072 * 5. PATH_OBJDIRPREFIX`cwd`
1074 * If one of the first two fails, use the current directory.
1075 * If the remaining three all fail, use the current directory.
1077 * Once things are initted,
1078 * have to add the original directory to the search path,
1079 * and modify the paths for the Makefiles apropriately. The
1080 * current directory is also placed as a variable for make scripts.
1082 if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) {
1083 if (!(path = getenv("MAKEOBJDIR"))) {
1085 pathp = PATH_OBJDIRPREFIX;
1086 snprintf(mdpath, MAXPATHLEN, "%s.%s", path, machine);
1087 if (!(objdir = chdir_verify_path(mdpath, obpath)))
1088 if (!(objdir=chdir_verify_path(path, obpath))) {
1089 snprintf(mdpath, MAXPATHLEN,
1090 "%s%s", pathp, curdir);
1091 if (!(objdir=chdir_verify_path(mdpath,
1096 else if (!(objdir = chdir_verify_path(path, obpath)))
1100 snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir);
1101 if (!(objdir = chdir_verify_path(mdpath, obpath)))
1104 Dir_InitDot(); /* Initialize the "." directory */
1105 if (objdir != curdir)
1106 Path_AddDir(&dirSearchPath, curdir);
1107 Var_SetGlobal(".ST_EXPORTVAR", "YES");
1108 Var_SetGlobal(".CURDIR", curdir);
1109 Var_SetGlobal(".OBJDIR", objdir);
1111 if (getenv("MAKE_JOBS_FIFO") != NULL)
1114 * Be compatible if user did not specify -j and did not explicitly
1115 * turned compatibility on
1117 if (!compatMake && !forceJobs)
1121 * Initialize target and suffix modules in preparation for
1122 * parsing the makefile(s)
1131 * Set up the .TARGETS variable to contain the list of targets to be
1132 * created. If none specified, make the variable empty -- the parser
1133 * will fill the thing in with the default or .MAIN target.
1135 if (Lst_IsEmpty(&create)) {
1136 Var_SetGlobal(".TARGETS", "");
1140 for (ln = Lst_First(&create); ln != NULL; ln = Lst_Succ(ln)) {
1141 char *name = Lst_Datum(ln);
1143 Var_Append(".TARGETS", name, VAR_GLOBAL);
1149 * If no user-supplied system path was given (through the -m option)
1150 * add the directories from the DEFSYSPATH (more than one may be given
1151 * as dir1:...:dirn) to the system include path.
1153 if (TAILQ_EMPTY(&sysIncPath)) {
1154 char syspath[] = PATH_DEFSYSPATH;
1156 for (start = syspath; *start != '\0'; start = cp) {
1157 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
1160 Path_AddDir(&sysIncPath, start);
1163 Path_AddDir(&sysIncPath, start);
1169 * Read in the built-in rules first, followed by the specified
1170 * makefile, if it was (makefile != (char *) NULL), or the default
1171 * Makefile and makefile, in that order, if it wasn't.
1174 /* Path of sys.mk */
1175 Lst sysMkPath = Lst_Initializer(sysMkPath);
1177 char defsysmk[] = PATH_DEFSYSMK;
1179 Path_Expand(defsysmk, &sysIncPath, &sysMkPath);
1180 if (Lst_IsEmpty(&sysMkPath))
1181 Fatal("make: no system rules (%s).", PATH_DEFSYSMK);
1182 LST_FOREACH(ln, &sysMkPath) {
1183 if (!ReadMakefile(Lst_Datum(ln)))
1187 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
1188 Lst_Destroy(&sysMkPath, free);
1191 if (!Lst_IsEmpty(&makefiles)) {
1194 LST_FOREACH(ln, &makefiles) {
1195 if (!TryReadMakefile(Lst_Datum(ln)))
1199 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
1200 } else if (!TryReadMakefile("BSDmakefile"))
1201 if (!TryReadMakefile("makefile"))
1202 TryReadMakefile("Makefile");
1204 ReadMakefile(".depend");
1206 /* Install all the flags into the MAKEFLAGS envariable. */
1207 if (((p = Var_Value(".MAKEFLAGS", VAR_GLOBAL)) != NULL) && *p)
1208 setenv("MAKEFLAGS", p, 1);
1210 setenv("MAKEFLAGS", "", 1);
1213 * For compatibility, look at the directories in the VPATH variable
1214 * and add them to the search path, if the variable is defined. The
1215 * variable's value is in the same format as the PATH envariable, i.e.
1216 * <directory>:<directory>:<directory>...
1218 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}";
1230 buf = Var_Subst(VPATH, VAR_CMD, FALSE);
1232 vpath = Buf_Data(buf);
1234 /* skip to end of directory */
1235 for (ptr = vpath; *ptr != ':' && *ptr != '\0'; ptr++)
1238 /* Save terminator character so know when to stop */
1242 /* Add directory to search path */
1243 Path_AddDir(&dirSearchPath, vpath);
1246 } while (savec != '\0');
1248 Buf_Destroy(buf, TRUE);
1252 * Now that all search paths have been read for suffixes et al, it's
1253 * time to add the default search path to their lists...
1257 /* print the initial graph, if the user requested it */
1261 /* print the values of any variables requested by the user */
1262 if (Lst_IsEmpty(&variables) && !printGraphOnly) {
1264 * Since the user has not requested that any variables
1265 * be printed, we can build targets.
1267 * Have read the entire graph and need to make a list of targets
1268 * to create. If none was given on the command line, we consult
1269 * the parsing module to find the main target(s) to create.
1271 Lst targs = Lst_Initializer(targs);
1273 if (!is_posix && mfAutoDeps) {
1275 * Check if any of the makefiles are out-of-date.
1280 if (Lst_IsEmpty(&create))
1281 Parse_MainName(&targs);
1283 Targ_FindList(&targs, &create, TARG_CREATE);
1287 * Compat_Init will take care of creating
1288 * all the targets as well as initializing
1295 * Initialize job module before traversing
1296 * the graph, now that any .BEGIN and .END
1297 * targets have been read. This is done
1298 * only if the -q flag wasn't given (to
1299 * prevent the .BEGIN from being executed
1307 /* Traverse the graph, checking on all the targets */
1308 outOfDate = Make_Run(&targs);
1310 Lst_Destroy(&targs, NOFREE);
1313 Var_Print(&variables, expandVars);
1316 Lst_Destroy(&variables, free);
1317 Lst_Destroy(&makefiles, free);
1318 Lst_Destroy(&source_makefiles, free);
1319 Lst_Destroy(&create, free);
1321 /* print the graph now it's been processed if the user requested it */
1328 if (makeErrors != 0)