예제 #1
0
/*-
 * main --
 *	The main function, for obvious reasons. Initializes variables
 *	and a few modules, then parses the arguments give it in the
 *	environment and on the command line. Reads the system makefile
 *	followed by either Makefile, makefile or the file given by the
 *	-f argument. Sets the .MAKEFLAGS PMake variable based on all the
 *	flags it has received by then uses either the Make or the Compat
 *	module to create the initial list of targets.
 *
 * Results:
 *	If -q was given, exits -1 if anything was out-of-date. Else it exits
 *	0.
 *
 * Side Effects:
 *	The program exits when done. Targets are created. etc. etc. etc.
 */
int
main(int argc, char **argv)
{
	Lst targs;	/* target nodes to create -- passed to Make_Init */
	Boolean outOfDate = FALSE; 	/* FALSE if all targets up to date */
	struct stat sb, sa;
	char *p1, *path;
	char mdpath[MAXPATHLEN];
#ifdef FORCE_MACHINE
	const char *machine = FORCE_MACHINE;
#else
    	const char *machine = getenv("MACHINE");
#endif
	const char *machine_arch = getenv("MACHINE_ARCH");
	char *syspath = getenv("MAKESYSPATH");
	Lst sysMkPath;			/* Path of sys.mk */
	char *cp = NULL, *start;
					/* avoid faults on read-only strings */
	static char defsyspath[] = _PATH_DEFSYSPATH;
	char found_path[MAXPATHLEN + 1];	/* for searching for sys.mk */
	struct timeval rightnow;		/* to initialize random seed */
	struct utsname utsname;

	/* default to writing debug to stderr */
	debug_file = stderr;

#ifdef SIGINFO
	(void)bmake_signal(SIGINFO, siginfo);
#endif
	/*
	 * Set the seed to produce a different random sequence
	 * on each program execution.
	 */
	gettimeofday(&rightnow, NULL);
	srandom(rightnow.tv_sec + rightnow.tv_usec);
	
	if ((progname = strrchr(argv[0], '/')) != NULL)
		progname++;
	else
		progname = argv[0];
#if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE))
	/*
	 * get rid of resource limit on file descriptors
	 */
	{
		struct rlimit rl;
		if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
		    rl.rlim_cur != rl.rlim_max) {
			rl.rlim_cur = rl.rlim_max;
			(void)setrlimit(RLIMIT_NOFILE, &rl);
		}
	}
#endif

	if (uname(&utsname) == -1) {
	    (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
		strerror(errno));
	    exit(2);
	}

	/*
	 * Get the name of this type of MACHINE from utsname
	 * so we can share an executable for similar machines.
	 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
	 *
	 * Note that both MACHINE and MACHINE_ARCH are decided at
	 * run-time.
	 */
	if (!machine) {
#ifdef MAKE_NATIVE
	    machine = utsname.machine;
#else
#ifdef MAKE_MACHINE
	    machine = MAKE_MACHINE;
#else
	    machine = "unknown";
#endif
#endif
	}

	if (!machine_arch) {
#if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH)
	    static char machine_arch_buf[sizeof(utsname.machine)];
	    int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
	    size_t len = sizeof(machine_arch_buf);
                
	    if (sysctl(mib, __arraycount(mib), machine_arch_buf,
		    &len, NULL, 0) < 0) {
		(void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname,
		    strerror(errno));
		exit(2);
	    }

	    machine_arch = machine_arch_buf;
#else
#ifndef MACHINE_ARCH
#ifdef MAKE_MACHINE_ARCH
            machine_arch = MAKE_MACHINE_ARCH;
#else
	    machine_arch = "unknown";
#endif
#else
	    machine_arch = MACHINE_ARCH;
#endif
#endif
	}

	myPid = getpid();		/* remember this for vFork() */

	/*
	 * Just in case MAKEOBJDIR wants us to do something tricky.
	 */
	Var_Init();		/* Initialize the lists of variables for
				 * parsing arguments */
	Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0);
	Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
	Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
#ifdef MAKE_VERSION
	Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
#endif
	Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */
	/*
	 * This is the traditional preference for makefiles.
	 */
#ifndef MAKEFILE_PREFERENCE_LIST
# define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
#endif
	Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST,
		VAR_GLOBAL, 0);
	Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0);

	create = Lst_Init(FALSE);
	makefiles = Lst_Init(FALSE);
	printVars = FALSE;
	debugVflag = FALSE;
	variables = Lst_Init(FALSE);
	beSilent = FALSE;		/* Print commands as executed */
	ignoreErrors = FALSE;		/* Pay attention to non-zero returns */
	noExecute = FALSE;		/* Execute all commands */
	noRecursiveExecute = FALSE;	/* Execute all .MAKE targets */
	keepgoing = FALSE;		/* Stop on error */
	allPrecious = FALSE;		/* Remove targets when interrupted */
	queryFlag = FALSE;		/* This is not just a check-run */
	noBuiltins = FALSE;		/* Read the built-in rules */
	touchFlag = FALSE;		/* Actually update targets */
	debug = 0;			/* No debug verbosity, please. */
	jobsRunning = FALSE;

	maxJobs = DEFMAXLOCAL;		/* Set default local max concurrency */
	maxJobTokens = maxJobs;
	compatMake = FALSE;		/* No compat mode */
	ignorePWD = FALSE;

	/*
	 * Initialize the parsing, directory and variable modules to prepare
	 * for the reading of inclusion paths and variable settings on the
	 * command line
	 */

	/*
	 * Initialize various variables.
	 *	MAKE also gets this name, for compatibility
	 *	.MAKEFLAGS gets set to the empty string just in case.
	 *	MFLAGS also gets initialized empty, for compatibility.
	 */
	Parse_Init();
	if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) {
	    /*
	     * Leave alone if it is an absolute path, or if it does
	     * not contain a '/' in which case we need to find it in
	     * the path, like execvp(3) and the shells do.
	     */
	    p1 = argv[0];
	} else {
	    /*
	     * A relative path, canonicalize it.
	     */
	    p1 = cached_realpath(argv[0], mdpath);
	    if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) {
		p1 = argv[0];		/* realpath failed */
	    }
	}
	Var_Set("MAKE", p1, VAR_GLOBAL, 0);
	Var_Set(".MAKE", p1, VAR_GLOBAL, 0);
	Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
	Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
	Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
	Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);
	/* some makefiles need to know this */
	Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0);

	/*
	 * Set some other useful macros
	 */
	{
	    char tmp[64], *ep;

	    makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0;
	    if (makelevel < 0)
		makelevel = 0;
	    snprintf(tmp, sizeof(tmp), "%d", makelevel);
	    Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0);
	    snprintf(tmp, sizeof(tmp), "%u", myPid);
	    Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0);
	    snprintf(tmp, sizeof(tmp), "%u", getppid());
	    Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0);
	}
	if (makelevel > 0) {
		char pn[1024];
		snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel);
		progname = bmake_strdup(pn);
	}

#ifdef USE_META
	meta_init();
#endif
	/*
	 * First snag any flags out of the MAKE environment variable.
	 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
	 * in a different format).
	 */
#ifdef POSIX
	p1 = explode(getenv("MAKEFLAGS"));
	Main_ParseArgLine(p1);
	free(p1);
#else
	Main_ParseArgLine(getenv("MAKE"));
#endif

	/*
	 * Find where we are (now).
	 * We take care of PWD for the automounter below...
	 */
	if (getcwd(curdir, MAXPATHLEN) == NULL) {
		(void)fprintf(stderr, "%s: getcwd: %s.\n",
		    progname, strerror(errno));
		exit(2);
	}

	MainParseArgs(argc, argv);

	if (enterFlag)
		printf("%s: Entering directory `%s'\n", progname, curdir);

	/*
	 * Verify that cwd is sane.
	 */
	if (stat(curdir, &sa) == -1) {
	    (void)fprintf(stderr, "%s: %s: %s.\n",
		 progname, curdir, strerror(errno));
	    exit(2);
	}

	/*
	 * All this code is so that we know where we are when we start up
	 * on a different machine with pmake.
	 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
	 * since the value of curdir can vary depending on how we got
	 * here.  Ie sitting at a shell prompt (shell that provides $PWD)
	 * or via subdir.mk in which case its likely a shell which does
	 * not provide it.
	 * So, to stop it breaking this case only, we ignore PWD if
	 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
	 */
#ifndef NO_PWD_OVERRIDE
	if (!ignorePWD) {
		char *pwd, *ptmp1 = NULL, *ptmp2 = NULL;

		if ((pwd = getenv("PWD")) != NULL &&
		    Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) {
			const char *makeobjdir = Var_Value("MAKEOBJDIR",
			    VAR_CMD, &ptmp2);

			if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
				if (stat(pwd, &sb) == 0 &&
				    sa.st_ino == sb.st_ino &&
				    sa.st_dev == sb.st_dev)
					(void)strncpy(curdir, pwd, MAXPATHLEN);
			}
		}
		free(ptmp1);
		free(ptmp2);
	}
#endif
	Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);

	/*
	 * Find the .OBJDIR.  If MAKEOBJDIRPREFIX, or failing that,
	 * MAKEOBJDIR is set in the environment, try only that value
	 * and fall back to .CURDIR if it does not exist.
	 *
	 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and
	 * finally _PATH_OBJDIRPREFIX`pwd`, in that order.  If none
	 * of these paths exist, just use .CURDIR.
	 */
	Dir_Init(curdir);
	(void)Main_SetObjdir(curdir);

	if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) {
		(void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir);
		(void)Main_SetObjdir(mdpath);
		free(p1);
	} else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) {
		(void)Main_SetObjdir(path);
		free(p1);
	} else {
		(void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine);
		if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) {
			(void)snprintf(mdpath, MAXPATHLEN, "%s%s", 
					_PATH_OBJDIRPREFIX, curdir);
			(void)Main_SetObjdir(mdpath);
		}
	}

	/*
	 * Initialize archive, target and suffix modules in preparation for
	 * parsing the makefile(s)
	 */
	Arch_Init();
	Targ_Init();
	Suff_Init();
	Trace_Init(tracefile);

	DEFAULT = NULL;
	(void)time(&now);

	Trace_Log(MAKESTART, NULL);
	
	/*
	 * Set up the .TARGETS variable to contain the list of targets to be
	 * created. If none specified, make the variable empty -- the parser
	 * will fill the thing in with the default or .MAIN target.
	 */
	if (!Lst_IsEmpty(create)) {
		LstNode ln;

		for (ln = Lst_First(create); ln != NULL;
		    ln = Lst_Succ(ln)) {
			char *name = (char *)Lst_Datum(ln);

			Var_Append(".TARGETS", name, VAR_GLOBAL);
		}
	} else
		Var_Set(".TARGETS", "", VAR_GLOBAL, 0);


	/*
	 * If no user-supplied system path was given (through the -m option)
	 * add the directories from the DEFSYSPATH (more than one may be given
	 * as dir1:...:dirn) to the system include path.
	 */
	if (syspath == NULL || *syspath == '\0')
		syspath = defsyspath;
	else
		syspath = bmake_strdup(syspath);

	for (start = syspath; *start != '\0'; start = cp) {
		for (cp = start; *cp != '\0' && *cp != ':'; cp++)
			continue;
		if (*cp == ':') {
			*cp++ = '\0';
		}
		/* look for magic parent directory search string */
		if (strncmp(".../", start, 4) != 0) {
			(void)Dir_AddDir(defIncPath, start);
		} else {
			if (Dir_FindHereOrAbove(curdir, start+4, 
			    found_path, sizeof(found_path))) {
				(void)Dir_AddDir(defIncPath, found_path);
			}
		}
	}
	if (syspath != defsyspath)
		free(syspath);

	/*
	 * Read in the built-in rules first, followed by the specified
	 * makefile, if it was (makefile != NULL), or the default
	 * makefile and Makefile, in that order, if it wasn't.
	 */
	if (!noBuiltins) {
		LstNode ln;

		sysMkPath = Lst_Init(FALSE);
		Dir_Expand(_PATH_DEFSYSMK,
			   Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
			   sysMkPath);
		if (Lst_IsEmpty(sysMkPath))
			Fatal("%s: no system rules (%s).", progname,
			    _PATH_DEFSYSMK);
		ln = Lst_Find(sysMkPath, NULL, ReadMakefile);
		if (ln == NULL)
			Fatal("%s: cannot open %s.", progname,
			    (char *)Lst_Datum(ln));
	}

	if (!Lst_IsEmpty(makefiles)) {
		LstNode ln;

		ln = Lst_Find(makefiles, NULL, ReadAllMakefiles);
		if (ln != NULL)
			Fatal("%s: cannot open %s.", progname, 
			    (char *)Lst_Datum(ln));
	} else {
	    p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}",
		VAR_CMD, VARF_WANTRES);
	    if (p1) {
		(void)str2Lst_Append(makefiles, p1, NULL);
		(void)Lst_Find(makefiles, NULL, ReadMakefile);
		free(p1);
	    }
	}

	/* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
	if (!noBuiltins || !printVars) {
	    makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}",
		VAR_CMD, VARF_WANTRES);
	    doing_depend = TRUE;
	    (void)ReadMakefile(makeDependfile, NULL);
	    doing_depend = FALSE;
	}

	if (enterFlagObj)
		printf("%s: Entering directory `%s'\n", progname, objdir);
	
	MakeMode(NULL);

	Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
	free(p1);

	if (!forceJobs && !compatMake &&
	    Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) {
	    char *value;
	    int n;

	    value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES);
	    n = strtol(value, NULL, 0);
	    if (n < 1) {
		(void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n",
		    progname);
		exit(1);
	    }
	    if (n != maxJobs) {
		Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
		Var_Append(MAKEFLAGS, value, VAR_GLOBAL);
	    }
	    maxJobs = n;
	    maxJobTokens = maxJobs;
	    forceJobs = TRUE;
	    free(value);
	}

	/*
	 * Be compatible if user did not specify -j and did not explicitly
	 * turned compatibility on
	 */
	if (!compatMake && !forceJobs) {
	    compatMake = TRUE;
	}

	if (!compatMake)
	    Job_ServerStart(maxJobTokens, jp_0, jp_1);
	if (DEBUG(JOB))
	    fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
		jp_0, jp_1, maxJobs, maxJobTokens, compatMake);

	Main_ExportMAKEFLAGS(TRUE);	/* initial export */

	/*
	 * For compatibility, look at the directories in the VPATH variable
	 * and add them to the search path, if the variable is defined. The
	 * variable's value is in the same format as the PATH envariable, i.e.
	 * <directory>:<directory>:<directory>...
	 */
	if (Var_Exists("VPATH", VAR_CMD)) {
		char *vpath, savec;
		/*
		 * GCC stores string constants in read-only memory, but
		 * Var_Subst will want to write this thing, so store it
		 * in an array
		 */
		static char VPATH[] = "${VPATH}";

		vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES);
		path = vpath;
		do {
			/* skip to end of directory */
			for (cp = path; *cp != ':' && *cp != '\0'; cp++)
				continue;
			/* Save terminator character so know when to stop */
			savec = *cp;
			*cp = '\0';
			/* Add directory to search path */
			(void)Dir_AddDir(dirSearchPath, path);
			*cp = savec;
			path = cp + 1;
		} while (savec == ':');
		free(vpath);
	}

	/*
	 * Now that all search paths have been read for suffixes et al, it's
	 * time to add the default search path to their lists...
	 */
	Suff_DoPaths();

	/*
	 * Propagate attributes through :: dependency lists.
	 */
	Targ_Propagate();

	/* print the initial graph, if the user requested it */
	if (DEBUG(GRAPH1))
		Targ_PrintGraph(1);

	/* print the values of any variables requested by the user */
	if (printVars) {
		LstNode ln;
		Boolean expandVars;

		if (debugVflag)
			expandVars = FALSE;
		else
			expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE);
		for (ln = Lst_First(variables); ln != NULL;
		    ln = Lst_Succ(ln)) {
			char *var = (char *)Lst_Datum(ln);
			char *value;
			
			if (strchr(var, '$')) {
			    value = p1 = Var_Subst(NULL, var, VAR_GLOBAL,
						   VARF_WANTRES);
			} else if (expandVars) {
				char tmp[128];
								
				if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp)))
					Fatal("%s: variable name too big: %s",
					      progname, var);
				value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL,
						       VARF_WANTRES);
			} else {
				value = Var_Value(var, VAR_GLOBAL, &p1);
			}
			printf("%s\n", value ? value : "");
			free(p1);
		}
	} else {
		/*
		 * Have now read the entire graph and need to make a list of
		 * targets to create. If none was given on the command line,
		 * we consult the parsing module to find the main target(s)
		 * to create.
		 */
		if (Lst_IsEmpty(create))
			targs = Parse_MainName();
		else
			targs = Targ_FindList(create, TARG_CREATE);

		if (!compatMake) {
			/*
			 * Initialize job module before traversing the graph
			 * now that any .BEGIN and .END targets have been read.
			 * This is done only if the -q flag wasn't given
			 * (to prevent the .BEGIN from being executed should
			 * it exist).
			 */
			if (!queryFlag) {
				Job_Init();
				jobsRunning = TRUE;
			}

			/* Traverse the graph, checking on all the targets */
			outOfDate = Make_Run(targs);
		} else {
			/*
			 * Compat_Init will take care of creating all the
			 * targets as well as initializing the module.
			 */
			Compat_Run(targs);
		}
	}

#ifdef CLEANUP
	Lst_Destroy(targs, NULL);
	Lst_Destroy(variables, NULL);
	Lst_Destroy(makefiles, NULL);
	Lst_Destroy(create, (FreeProc *)free);
#endif

	/* print the graph now it's been processed if the user requested it */
	if (DEBUG(GRAPH2))
		Targ_PrintGraph(2);

	Trace_Log(MAKEEND, 0);

	if (enterFlagObj)
		printf("%s: Leaving directory `%s'\n", progname, objdir);
	if (enterFlag)
		printf("%s: Leaving directory `%s'\n", progname, curdir);

#ifdef USE_META
	meta_finish();
#endif
	Suff_End();
        Targ_End();
	Arch_End();
	Var_End();
	Parse_End();
	Dir_End();
	Job_End();
	Trace_End();

	return outOfDate ? 1 : 0;
}
예제 #2
0
/*-
 * main --
 *	The main function, for obvious reasons. Initializes variables
 *	and a few modules, then parses the arguments give it in the
 *	environment and on the command line. Reads the system makefile
 *	followed by either Makefile, makefile or the file given by the
 *	-f argument. Sets the .MAKEFLAGS PMake variable based on all the
 *	flags it has received by then uses either the Make or the Compat
 *	module to create the initial list of targets.
 *
 * Results:
 *	If -q was given, exits -1 if anything was out-of-date. Else it exits
 *	0.
 *
 * Side Effects:
 *	The program exits when done. Targets are created. etc. etc. etc.
 */
int
main(int argc, char **argv)
{
	Lst targs;	/* target nodes to create -- passed to Make_Init */
	Boolean outOfDate = TRUE; 	/* FALSE if all targets up to date */
	struct stat sb, sa;
	char *p1, *path, *pwd;
	char mdpath[MAXPATHLEN];
#ifdef FORCE_MACHINE
	char *machine = FORCE_MACHINE;
#else
    	char *machine = getenv("MACHINE");
#endif
	const char *machine_arch = getenv("MACHINE_ARCH");
	char *syspath = getenv("MAKESYSPATH");
	Lst sysMkPath;			/* Path of sys.mk */
	char *cp = NULL, *start;
					/* avoid faults on read-only strings */
	static char defsyspath[] = DEFAULT_SYS_PATH;
	char found_path[MAXPATHLEN + 1];	/* for searching for sys.mk */
	struct timeval rightnow;		/* to initialize random seed */

	/*
	 * Set the seed to produce a different random sequences
	 * on each program execution.
	 */
	gettimeofday(&rightnow, NULL);
	srandom(rightnow.tv_sec + rightnow.tv_usec);
	
	if ((progname = strrchr(argv[0], '/')) != NULL)
		progname++;
	else
		progname = argv[0];
#ifdef RLIMIT_NOFILE
	/*
	 * get rid of resource limit on file descriptors
	 */
	{
		struct rlimit rl;
		if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
		    rl.rlim_cur != rl.rlim_max) {
			rl.rlim_cur = rl.rlim_max;
			(void)setrlimit(RLIMIT_NOFILE, &rl);
		}
	}
#endif
	/*
	 * Find where we are and take care of PWD for the automounter...
	 * All this code is so that we know where we are when we start up
	 * on a different machine with pmake.
	 */
	if (getcwd(curdir, MAXPATHLEN) == NULL) {
		(void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
		exit(2);
	}

	if (stat(curdir, &sa) == -1) {
	    (void)fprintf(stderr, "%s: %s: %s.\n",
		 progname, curdir, strerror(errno));
	    exit(2);
	}

	/*
	 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
	 * since the value of curdir can very depending on how we got
	 * here.  Ie sitting at a shell prompt (shell that provides $PWD)
	 * or via subdir.mk in which case its likely a shell which does
	 * not provide it.
	 * So, to stop it breaking this case only, we ignore PWD if
	 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
	 */
#ifndef NO_PWD_OVERRIDE
	if ((pwd = getenv("PWD")) != NULL && getenv("MAKEOBJDIRPREFIX") == NULL) {
		const char *makeobjdir = getenv("MAKEOBJDIR");

		if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
			if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino &&
			    sa.st_dev == sb.st_dev)
				(void)strncpy(curdir, pwd, MAXPATHLEN);
		}
	}
#endif
	/*
	 * Get the name of this type of MACHINE from utsname
	 * so we can share an executable for similar machines.
	 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
	 *
	 * Note that both MACHINE and MACHINE_ARCH are decided at
	 * run-time.
	 */
	if (!machine) {
#ifdef MAKE_NATIVE
	    struct utsname utsname;

	    if (uname(&utsname) == -1) {
		(void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
		    strerror(errno));
		exit(2);
	    }
	    machine = utsname.machine;
#else
#ifdef MAKE_MACHINE
	    machine = MAKE_MACHINE;
#else
	    machine = "unknown";
#endif
#endif
	}

	if (!machine_arch) {
#ifndef MACHINE_ARCH
#ifdef MAKE_MACHINE_ARCH
            machine_arch = MAKE_MACHINE_ARCH;
#else
	    machine_arch = "unknown";
#endif
#else
	    machine_arch = MACHINE_ARCH;
#endif
	}

	/*
	 * Just in case MAKEOBJDIR wants us to do something tricky.
	 */
	Var_Init();		/* Initialize the lists of variables for
				 * parsing arguments */
	Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);
	Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
	Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
#ifdef MAKE_VERSION
	Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
#endif
	Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */

	/*
	 * Find the .OBJDIR.  If MAKEOBJDIRPREFIX, or failing that,
	 * MAKEOBJDIR is set in the environment, try only that value
	 * and fall back to .CURDIR if it does not exist.
	 *
	 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and
	 * finally _PATH_OBJDIRPREFIX`pwd`, in that order.  If none
	 * of these paths exist, just use .CURDIR.
	 */
	Dir_Init(curdir);
	(void)Main_SetObjdir(curdir);

	if ((path = getenv("MAKEOBJDIRPREFIX")) != NULL) {
		(void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir);
		(void)Main_SetObjdir(mdpath);
	} else if ((path = getenv("MAKEOBJDIR")) != NULL) {
		(void)Main_SetObjdir(path);
	} else {
		(void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine);
		if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) {
			(void)snprintf(mdpath, MAXPATHLEN, "%s%s", 
					_PATH_OBJDIRPREFIX, curdir);
			(void)Main_SetObjdir(mdpath);
		}
	}

	create = Lst_Init(FALSE);
	makefiles = Lst_Init(FALSE);
	printVars = FALSE;
	variables = Lst_Init(FALSE);
	beSilent = FALSE;		/* Print commands as executed */
	ignoreErrors = FALSE;		/* Pay attention to non-zero returns */
	noExecute = FALSE;		/* Execute all commands */
	noRecursiveExecute = FALSE;	/* Execute all .MAKE targets */
	keepgoing = FALSE;		/* Stop on error */
	allPrecious = FALSE;		/* Remove targets when interrupted */
	queryFlag = FALSE;		/* This is not just a check-run */
	noBuiltins = FALSE;		/* Read the built-in rules */
	touchFlag = FALSE;		/* Actually update targets */
	usePipes = TRUE;		/* Catch child output in pipes */
	debug = 0;			/* No debug verbosity, please. */
	jobsRunning = FALSE;

	maxLocal = DEFMAXLOCAL;		/* Set default local max concurrency */
#ifdef REMOTE
	maxJobs = DEFMAXJOBS;		/* Set default max concurrency */
#else
	maxJobs = maxLocal;
#endif
	compatMake = FALSE;		/* No compat mode */


	/*
	 * Initialize the parsing, directory and variable modules to prepare
	 * for the reading of inclusion paths and variable settings on the
	 * command line
	 */

	/*
	 * Initialize various variables.
	 *	MAKE also gets this name, for compatibility
	 *	.MAKEFLAGS gets set to the empty string just in case.
	 *	MFLAGS also gets initialized empty, for compatibility.
	 */
	Parse_Init();
	Var_Set("MAKE", argv[0], VAR_GLOBAL, 0);
	Var_Set(".MAKE", argv[0], VAR_GLOBAL, 0);
	Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
	Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
	Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
	Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);

	/*
	 * First snag any flags out of the MAKE environment variable.
	 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
	 * in a different format).
	 */
#ifdef POSIX
	Main_ParseArgLine(getenv("MAKEFLAGS"));
#else
	Main_ParseArgLine(getenv("MAKE"));
#endif

	MainParseArgs(argc, argv);

	/*
	 * Be compatible if user did not specify -j and did not explicitly
	 * turned compatibility on
	 */
	if (!compatMake && !forceJobs) {
		compatMake = TRUE;
	}
	
	/*
	 * Initialize archive, target and suffix modules in preparation for
	 * parsing the makefile(s)
	 */
	Arch_Init();
	Targ_Init();
	Suff_Init();
	Trace_Init(tracefile);

	DEFAULT = NILGNODE;
	(void)time(&now);

	Trace_Log(MAKESTART, NULL);
	
	/*
	 * Set up the .TARGETS variable to contain the list of targets to be
	 * created. If none specified, make the variable empty -- the parser
	 * will fill the thing in with the default or .MAIN target.
	 */
	if (!Lst_IsEmpty(create)) {
		LstNode ln;

		for (ln = Lst_First(create); ln != NILLNODE;
		    ln = Lst_Succ(ln)) {
			char *name = (char *)Lst_Datum(ln);

			Var_Append(".TARGETS", name, VAR_GLOBAL);
		}
	} else
		Var_Set(".TARGETS", "", VAR_GLOBAL, 0);


	/*
	 * If no user-supplied system path was given (through the -m option)
	 * add the directories from the DEFSYSPATH (more than one may be given
	 * as dir1:...:dirn) to the system include path.
	 */
	if (syspath == NULL || *syspath == '\0')
		syspath = defsyspath;
	else
		syspath = strdup(syspath);

	for (start = syspath; *start != '\0'; start = cp) {
		for (cp = start; *cp != '\0' && *cp != ':'; cp++)
			continue;
		if (*cp == ':') {
			*cp++ = '\0';
		}
		/* look for magic parent directory search string */
		if (strncmp(".../", start, 4) != 0) {
			(void)Dir_AddDir(defIncPath, start);
		} else {
			if (Dir_FindHereOrAbove(curdir, start+4, 
			    found_path, sizeof(found_path))) {
				(void)Dir_AddDir(defIncPath, found_path);
			}
		}
	}
	if (syspath != defsyspath)
		free(syspath);

	/*
	 * Read in the built-in rules first, followed by the specified
	 * makefile, if it was (makefile != NULL), or the default
	 * makefile and Makefile, in that order, if it wasn't.
	 */
	if (!noBuiltins) {
		LstNode ln;

		sysMkPath = Lst_Init(FALSE);
		Dir_Expand(_PATH_DEFSYSMK,
			   Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
			   sysMkPath);
		if (Lst_IsEmpty(sysMkPath))
			Fatal("%s: no system rules (%s).", progname,
			    _PATH_DEFSYSMK);
		ln = Lst_Find(sysMkPath, (ClientData)NULL, ReadMakefile);
		if (ln != NILLNODE)
			Fatal("%s: cannot open %s.", progname,
			    (char *)Lst_Datum(ln));
	}

	if (!Lst_IsEmpty(makefiles)) {
		LstNode ln;

		ln = Lst_Find(makefiles, (ClientData)NULL, ReadMakefile);
		if (ln != NILLNODE)
			Fatal("%s: cannot open %s.", progname, 
			    (char *)Lst_Datum(ln));
	} else if (!ReadMakefile(UNCONST("makefile"), NULL))
		(void)ReadMakefile(UNCONST("Makefile"), NULL);

	(void)ReadMakefile(UNCONST(".depend"), NULL);

	Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
	if (p1)
	    free(p1);

	if (!jobServer && !compatMake)
	    Job_ServerStart(maxJobs);
	if (DEBUG(JOB))
	    printf("job_pipe %d %d, maxjobs %d maxlocal %d compat %d\n", job_pipe[0], job_pipe[1], maxJobs,
	           maxLocal, compatMake);

	Main_ExportMAKEFLAGS(TRUE);	/* initial export */

#ifndef NO_CHECK_MAKE_CHDIR
	Check_Cwd_av(0, NULL, 0);	/* initialize it */
#endif

	/*
	 * For compatibility, look at the directories in the VPATH variable
	 * and add them to the search path, if the variable is defined. The
	 * variable's value is in the same format as the PATH envariable, i.e.
	 * <directory>:<directory>:<directory>...
	 */
	if (Var_Exists("VPATH", VAR_CMD)) {
		char *vpath, savec;
		/*
		 * GCC stores string constants in read-only memory, but
		 * Var_Subst will want to write this thing, so store it
		 * in an array
		 */
		static char VPATH[] = "${VPATH}";

		vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE);
		path = vpath;
		do {
			/* skip to end of directory */
			for (cp = path; *cp != ':' && *cp != '\0'; cp++)
				continue;
			/* Save terminator character so know when to stop */
			savec = *cp;
			*cp = '\0';
			/* Add directory to search path */
			(void)Dir_AddDir(dirSearchPath, path);
			*cp = savec;
			path = cp + 1;
		} while (savec == ':');
		free(vpath);
	}

	/*
	 * Now that all search paths have been read for suffixes et al, it's
	 * time to add the default search path to their lists...
	 */
	Suff_DoPaths();

	/*
	 * Propagate attributes through :: dependency lists.
	 */
	Targ_Propagate();

	/* print the initial graph, if the user requested it */
	if (DEBUG(GRAPH1))
		Targ_PrintGraph(1);

	/* print the values of any variables requested by the user */
	if (printVars) {
		LstNode ln;

		for (ln = Lst_First(variables); ln != NILLNODE;
		    ln = Lst_Succ(ln)) {
			char *var = (char *)Lst_Datum(ln);
			char *value;
			
			if (strchr(var, '$')) {
				value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0);
			} else {
				value = Var_Value(var, VAR_GLOBAL, &p1);
			}
			printf("%s\n", value ? value : "");
			if (p1)
				free(p1);
		}
	}

	/*
	 * Have now read the entire graph and need to make a list of targets
	 * to create. If none was given on the command line, we consult the
	 * parsing module to find the main target(s) to create.
	 */
	if (Lst_IsEmpty(create))
		targs = Parse_MainName();
	else
		targs = Targ_FindList(create, TARG_CREATE);

	if (!compatMake && !printVars) {
		/*
		 * Initialize job module before traversing the graph, now that
		 * any .BEGIN and .END targets have been read.  This is done
		 * only if the -q flag wasn't given (to prevent the .BEGIN from
		 * being executed should it exist).
		 */
		if (!queryFlag) {
			if (maxLocal == -1)
				maxLocal = maxJobs;
			Job_Init(maxJobs, maxLocal);
			jobsRunning = TRUE;
		}

		/* Traverse the graph, checking on all the targets */
		outOfDate = Make_Run(targs);
	} else if (!printVars) {
		/*
		 * Compat_Init will take care of creating all the targets as
		 * well as initializing the module.
		 */
		Compat_Run(targs);
	}

#ifdef CLEANUP
	Lst_Destroy(targs, NOFREE);
	Lst_Destroy(variables, NOFREE);
	Lst_Destroy(makefiles, NOFREE);
	Lst_Destroy(create, (FreeProc *)free);
#endif

	/* print the graph now it's been processed if the user requested it */
	if (DEBUG(GRAPH2))
		Targ_PrintGraph(2);

	Trace_Log(MAKEEND, 0);

	Suff_End();
        Targ_End();
	Arch_End();
	Var_End();
	Parse_End();
	Dir_End();
	Job_End();
	Trace_End();

	if (queryFlag && outOfDate)
		return(1);
	else
		return(0);
}
예제 #3
0
/*-
 * MainParseArgs --
 *	Parse a given argument vector. Called from main() and from
 *	Main_ParseArgLine() when the .MAKEFLAGS target is used.
 *
 *	XXX: Deal with command line overriding .MAKEFLAGS in makefile
 *
 * Results:
 *	None
 *
 * Side Effects:
 *	Various global and local flags will be set depending on the flags
 *	given
 */
static void
MainParseArgs(int argc, char **argv)
{
	char *p;
	int c = '?';
	int arginc;
	char *argvalue;
	const char *getopt_def;
	char *optscan;
	Boolean inOption, dashDash = FALSE;
	char found_path[MAXPATHLEN + 1];	/* for searching for sys.mk */

#define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw"
/* Can't actually use getopt(3) because rescanning is not portable */

	getopt_def = OPTFLAGS;
rearg:	
	inOption = FALSE;
	optscan = NULL;
	while(argc > 1) {
		char *getopt_spec;
		if(!inOption)
			optscan = argv[1];
		c = *optscan++;
		arginc = 0;
		if(inOption) {
			if(c == '\0') {
				++argv;
				--argc;
				inOption = FALSE;
				continue;
			}
		} else {
			if (c != '-' || dashDash)
				break;
			inOption = TRUE;
			c = *optscan++;
		}
		/* '-' found at some earlier point */
		getopt_spec = strchr(getopt_def, c);
		if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
			/* -<something> found, and <something> should have an arg */
			inOption = FALSE;
			arginc = 1;
			argvalue = optscan;
			if(*argvalue == '\0') {
				if (argc < 3)
					goto noarg;
				argvalue = argv[2];
				arginc = 2;
			}
		} else {
			argvalue = NULL; 
		}
		switch(c) {
		case '\0':
			arginc = 1;
			inOption = FALSE;
			break;
		case 'B':
			compatMake = TRUE;
			Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
			Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0);
			break;
		case 'C':
			if (chdir(argvalue) == -1) {
				(void)fprintf(stderr,
					      "%s: chdir %s: %s\n",
					      progname, argvalue,
					      strerror(errno));
				exit(1);
			}
			if (getcwd(curdir, MAXPATHLEN) == NULL) {
				(void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
				exit(2);
			}
			ignorePWD = TRUE;
			break;
		case 'D':
			if (argvalue == NULL || argvalue[0] == 0) goto noarg;
			Var_Set(argvalue, "1", VAR_GLOBAL, 0);
			Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			break;
		case 'I':
			if (argvalue == NULL) goto noarg;
			Parse_AddIncludeDir(argvalue);
			Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			break;
		case 'J':
			if (argvalue == NULL) goto noarg;
			if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) {
			    (void)fprintf(stderr,
				"%s: internal error -- J option malformed (%s)\n",
				progname, argvalue);
				usage();
			}
			if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
			    (fcntl(jp_1, F_GETFD, 0) < 0)) {
#if 0
			    (void)fprintf(stderr,
				"%s: ###### warning -- J descriptors were closed!\n",
				progname);
			    exit(2);
#endif
			    jp_0 = -1;
			    jp_1 = -1;
			    compatMake = TRUE;
			} else {
			    Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
			    Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			    jobServer = TRUE;
			}
			break;
		case 'N':
			noExecute = TRUE;
			noRecursiveExecute = TRUE;
			Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
			break;
		case 'S':
			keepgoing = FALSE;
			Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
			break;
		case 'T':
			if (argvalue == NULL) goto noarg;
			tracefile = bmake_strdup(argvalue);
			Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			break;
		case 'V':
			if (argvalue == NULL) goto noarg;
			printVars = TRUE;
			(void)Lst_AtEnd(variables, argvalue);
			Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			break;
		case 'W':
			parseWarnFatal = TRUE;
			break;
		case 'X':
			varNoExportEnv = TRUE;
			Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
			break;
		case 'd':
			if (argvalue == NULL) goto noarg;
			/* If '-d-opts' don't pass to children */
			if (argvalue[0] == '-')
			    argvalue++;
			else {
			    Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
			    Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			}
			parse_debug_options(argvalue);
			break;
		case 'e':
			checkEnvFirst = TRUE;
			Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
			break;
		case 'f':
			if (argvalue == NULL) goto noarg;
			(void)Lst_AtEnd(makefiles, argvalue);
			break;
		case 'i':
			ignoreErrors = TRUE;
			Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
			break;
		case 'j':
			if (argvalue == NULL) goto noarg;
			forceJobs = TRUE;
			maxJobs = strtol(argvalue, &p, 0);
			if (*p != '\0' || maxJobs < 1) {
				(void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
				    progname);
				exit(1);
			}
			Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0);
			maxJobTokens = maxJobs;
			break;
		case 'k':
			keepgoing = TRUE;
			Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
			break;
		case 'm':
			if (argvalue == NULL) goto noarg;
			/* look for magic parent directory search string */
			if (strncmp(".../", argvalue, 4) == 0) {
				if (!Dir_FindHereOrAbove(curdir, argvalue+4,
				    found_path, sizeof(found_path)))
					break;		/* nothing doing */
				(void)Dir_AddDir(sysIncPath, found_path);
			} else {
				(void)Dir_AddDir(sysIncPath, argvalue);
			}
			Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
			break;
		case 'n':
			noExecute = TRUE;
			Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
			break;
		case 'q':
			queryFlag = TRUE;
			/* Kind of nonsensical, wot? */
			Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
			break;
		case 'r':
			noBuiltins = TRUE;
			Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
			break;
		case 's':
			beSilent = TRUE;
			Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
			break;
		case 't':
			touchFlag = TRUE;
			Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
			break;
		case 'w':
			enterFlag = TRUE;
			Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL);
			break;
		case '-':
			dashDash = TRUE;
			break;
		default:
		case '?':
#ifndef MAKE_NATIVE
			fprintf(stderr, "getopt(%s) -> %d (%c)\n",
				OPTFLAGS, c, c);
#endif
			usage();
		}
		argv += arginc;
		argc -= arginc;
	}

	oldVars = TRUE;

	/*
	 * See if the rest of the arguments are variable assignments and
	 * perform them if so. Else take them to be targets and stuff them
	 * on the end of the "create" list.
	 */
	for (; argc > 1; ++argv, --argc)
		if (Parse_IsVar(argv[1])) {
			Parse_DoVar(argv[1], VAR_CMD);
		} else {
			if (!*argv[1])
				Punt("illegal (null) argument.");
			if (*argv[1] == '-' && !dashDash)
				goto rearg;
			(void)Lst_AtEnd(create, bmake_strdup(argv[1]));
		}

	return;
noarg:
	(void)fprintf(stderr, "%s: option requires an argument -- %c\n",
	    progname, c);
	usage();
}
예제 #4
0
/*-
 * MainParseArgs --
 *	Parse a given argument vector. Called from main() and from
 *	Main_ParseArgLine() when the .MAKEFLAGS target is used.
 *
 *	XXX: Deal with command line overriding .MAKEFLAGS in makefile
 *
 * Results:
 *	None
 *
 * Side Effects:
 *	Various global and local flags will be set depending on the flags
 *	given
 */
static void
MainParseArgs(int argc, char **argv)
{
	char *p;
	int c;
	int arginc;
	char *argvalue;
	const char *getopt_def;
	char *optscan;
	Boolean inOption, dashDash = FALSE;
	char found_path[MAXPATHLEN + 1];	/* for searching for sys.mk */

#ifdef REMOTE
# define OPTFLAGS "BD:I:J:L:NPST:V:WXd:ef:ij:km:nqrst"
#else
# define OPTFLAGS "BD:I:J:NPST:V:WXd:ef:ij:km:nqrst"
#endif
#undef optarg
#define optarg argvalue	
/* Can't actually use getopt(3) because rescanning is not portable */

	getopt_def = OPTFLAGS;
rearg:	
	inOption = FALSE;
	optscan = NULL;
	while(argc > 1) {
		char *getopt_spec;
		if(!inOption)
			optscan = argv[1];
		c = *optscan++;
		arginc = 0;
		if(inOption) {
			if(c == '\0') {
				++argv;
				--argc;
				inOption = FALSE;
				continue;
			}
		} else {
			if (c != '-' || dashDash)
				break;
			inOption = TRUE;
			c = *optscan++;
		}
		/* '-' found at some earlier point */
		getopt_spec = strchr(getopt_def, c);
		if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
			/* -<something> found, and <something> should have an arg */
			inOption = FALSE;
			arginc = 1;
			argvalue = optscan;
			if(*argvalue == '\0') {
				if (argc < 3) {
					(void)fprintf(stderr,
					    "%s: option requires "
					    "an argument -- %c\n",
					    progname, c);
					usage();
				}
				argvalue = argv[2];
				arginc = 2;
			}
		} else {
			argvalue = NULL; 
		}
		switch(c) {
		case '\0':
			arginc = 1;
			inOption = FALSE;
			break;
		case 'B':
			compatMake = TRUE;
			Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
			break;
		case 'D':
			Var_Set(optarg, "1", VAR_GLOBAL, 0);
			Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'I':
			Parse_AddIncludeDir(optarg);
			Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'J':
			if (sscanf(optarg, "%d,%d", &job_pipe[0], &job_pipe[1]) != 2) {
			    /* backslash to avoid trigraph ??) */
			    (void)fprintf(stderr,
				"%s: internal error -- J option malformed (%s?\?)\n",
				progname, optarg);
				usage();
			}
			if ((fcntl(job_pipe[0], F_GETFD, 0) < 0) ||
			    (fcntl(job_pipe[1], F_GETFD, 0) < 0)) {
#if 0
			    (void)fprintf(stderr,
				"%s: warning -- J descriptors were closed!\n",
				progname);
#endif
			    job_pipe[0] = -1;
			    job_pipe[1] = -1;
			    compatMake = TRUE;
			} else {
			    Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
			    Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			    jobServer = TRUE;
			}
			break;
#ifdef REMOTE
		case 'L':
			maxLocal = strtol(optarg, &p, 0);
			if (*p != '\0' || maxLocal < 1) {
			    (void)fprintf(stderr, "%s: illegal argument to -L -- must be positive integer!\n",
				progname);
			    exit(1);
			}
			Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
#endif
		case 'N':
			noExecute = TRUE;
			noRecursiveExecute = TRUE;
			Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
			break;
		case 'P':
			usePipes = FALSE;
			Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL);
			break;
		case 'S':
			keepgoing = FALSE;
			Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
			break;
		case 'T':
			tracefile = estrdup(optarg);
			Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'V':
			printVars = TRUE;
			(void)Lst_AtEnd(variables, (ClientData)optarg);
			Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'W':
			parseWarnFatal = TRUE;
			break;
		case 'X':
			varNoExportEnv = TRUE;
			Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
			break;
		case 'd': {
			char *modules = optarg;

			for (; *modules; ++modules)
				switch (*modules) {
				case 'A':
					debug = ~0;
					break;
				case 'a':
					debug |= DEBUG_ARCH;
					break;
				case 'c':
					debug |= DEBUG_COND;
					break;
				case 'd':
					debug |= DEBUG_DIR;
					break;
				case 'e':
					debug |= DEBUG_ERROR;
					break;
				case 'f':
					debug |= DEBUG_FOR;
					break;
				case 'g':
					if (modules[1] == '1') {
						debug |= DEBUG_GRAPH1;
						++modules;
					}
					else if (modules[1] == '2') {
						debug |= DEBUG_GRAPH2;
						++modules;
					}
					else if (modules[1] == '3') {
						debug |= DEBUG_GRAPH3;
						++modules;
					}
					break;
				case 'j':
					debug |= DEBUG_JOB;
					break;
				case 'm':
					debug |= DEBUG_MAKE;
					break;
				case 'n':
					debug |= DEBUG_SCRIPT;
					break;
				case 's':
					debug |= DEBUG_SUFF;
					break;
				case 't':
					debug |= DEBUG_TARG;
					break;
				case 'v':
					debug |= DEBUG_VAR;
					break;
				case 'x':
					debug |= DEBUG_SHELL;
					break;
				default:
					(void)fprintf(stderr,
				"%s: illegal argument to d option -- %c\n",
					    progname, *modules);
					usage();
				}
			Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		}
		case 'e':
			checkEnvFirst = TRUE;
			Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
			break;
		case 'f':
			(void)Lst_AtEnd(makefiles, (ClientData)optarg);
			break;
		case 'i':
			ignoreErrors = TRUE;
			Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
			break;
		case 'j':
			forceJobs = TRUE;
			maxJobs = strtol(optarg, &p, 0);
			if (*p != '\0' || maxJobs < 1) {
				(void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
				    progname);
				exit(1);
			}
#ifndef REMOTE
			maxLocal = maxJobs;
#endif
			Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'k':
			keepgoing = TRUE;
			Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
			break;
		case 'm':
			/* look for magic parent directory search string */
			if (strncmp(".../", optarg, 4) == 0) {
				if (!Dir_FindHereOrAbove(curdir, optarg+4,
				    found_path, sizeof(found_path)))
					break;		/* nothing doing */
				(void)Dir_AddDir(sysIncPath, found_path);
				
			} else {
				(void)Dir_AddDir(sysIncPath, optarg);
			}
			Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
			Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL);
			break;
		case 'n':
			noExecute = TRUE;
			Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
			break;
		case 'q':
			queryFlag = TRUE;
			/* Kind of nonsensical, wot? */
			Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
			break;
		case 'r':
			noBuiltins = TRUE;
			Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
			break;
		case 's':
			beSilent = TRUE;
			Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
			break;
		case 't':
			touchFlag = TRUE;
			Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
			break;
		case '-':
			dashDash = TRUE;
			break;
		default:
		case '?':
#ifndef MAKE_NATIVE
			fprintf(stderr, "getopt(%s) -> %d (%c)\n",
				OPTFLAGS, c, c);
#endif
			usage();
		}
		argv += arginc;
		argc -= arginc;
	}

	oldVars = TRUE;

	/*
	 * See if the rest of the arguments are variable assignments and
	 * perform them if so. Else take them to be targets and stuff them
	 * on the end of the "create" list.
	 */
	for (; argc > 1; ++argv, --argc)
		if (Parse_IsVar(argv[1])) {
			Parse_DoVar(argv[1], VAR_CMD);
		} else {
			if (!*argv[1])
				Punt("illegal (null) argument.");
			if (*argv[1] == '-' && !dashDash)
				goto rearg;
			(void)Lst_AtEnd(create, (ClientData)estrdup(argv[1]));
		}
}