diff options
Diffstat (limited to 'bootstrap/bmake/main.c')
| -rw-r--r-- | bootstrap/bmake/main.c | 1743 |
1 files changed, 1743 insertions, 0 deletions
diff --git a/bootstrap/bmake/main.c b/bootstrap/bmake/main.c new file mode 100644 index 00000000000..4de0cede325 --- /dev/null +++ b/bootstrap/bmake/main.c @@ -0,0 +1,1743 @@ +/* $NetBSD: main.c,v 1.1.1.1 2004/03/11 13:04:10 grant Exp $ */ + +/* + * Copyright (c) 1988, 1989, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1989 by Berkeley Softworks + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Adam de Boor. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef MAKE_BOOTSTRAP +static char rcsid[] = "$NetBSD: main.c,v 1.1.1.1 2004/03/11 13:04:10 grant Exp $"; +#else +#include <sys/cdefs.h> +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ + The Regents of the University of California. All rights reserved.\n"); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; +#else +__RCSID("$NetBSD: main.c,v 1.1.1.1 2004/03/11 13:04:10 grant Exp $"); +#endif +#endif /* not lint */ +#endif + +#if !defined(MAKE_BOOTSTRAP) && !defined(lint) +__IDSTRING(rcs_id,"$Id: main.c,v 1.1.1.1 2004/03/11 13:04:10 grant Exp $"); +#endif + +/*- + * main.c -- + * The main file for this entire program. Exit routines etc + * reside here. + * + * Utility functions defined in this file: + * Main_ParseArgLine Takes a line of arguments, breaks them and + * treats them as if they were given when first + * invoked. Used by the parse module to implement + * the .MFLAGS target. + * + * Error Print a tagged error message. The global + * MAKE variable must have been defined. This + * takes a format string and two optional + * arguments for it. + * + * Fatal Print an error message and exit. Also takes + * a format string and two arguments. + * + * Punt Aborts all jobs and exits with a message. Also + * takes a format string and two arguments. + * + * Finish Finish things up by printing the number of + * errors which occurred, as passed to it, and + * exiting. + */ + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/param.h> +#include <sys/resource.h> +#include <sys/signal.h> +#include <sys/stat.h> +#ifndef MAKE_BOOTSTRAP +#include <sys/utsname.h> +#endif +#include <sys/wait.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <time.h> +#ifdef __STDC__ +#include <stdlib.h> +#include <stdarg.h> +#else +#include <varargs.h> +#endif +#include "make.h" +#include "hash.h" +#include "dir.h" +#include "job.h" +#include "pathnames.h" +#include "trace.h" + +#ifdef USE_IOVEC +#include <sys/uio.h> +#endif + +#ifndef DEFMAXLOCAL +#define DEFMAXLOCAL DEFMAXJOBS +#endif /* DEFMAXLOCAL */ + +Lst create; /* Targets to be made */ +time_t now; /* Time at start of make */ +GNode *DEFAULT; /* .DEFAULT node */ +Boolean allPrecious; /* .PRECIOUS given on line by itself */ + +static Boolean noBuiltins; /* -r flag */ +static Lst makefiles; /* ordered list of makefiles to read */ +static Boolean printVars; /* print value of one or more vars */ +static Lst variables; /* list of variables to print */ +int maxJobs; /* -j argument */ +static int maxLocal; /* -L argument */ +Boolean compatMake; /* -B argument */ +Boolean debug; /* -d flag */ +Boolean noExecute; /* -n flag */ +Boolean noRecursiveExecute; /* -N flag */ +Boolean keepgoing; /* -k flag */ +Boolean queryFlag; /* -q flag */ +Boolean touchFlag; /* -t flag */ +Boolean usePipes; /* !-P flag */ +Boolean ignoreErrors; /* -i flag */ +Boolean beSilent; /* -s flag */ +Boolean oldVars; /* variable substitution style */ +Boolean checkEnvFirst; /* -e flag */ +Boolean parseWarnFatal; /* -W flag */ +Boolean jobServer; /* -J flag */ +static Boolean jobsRunning; /* TRUE if the jobs might be running */ +static const char * tracefile; +#ifndef NO_CHECK_MAKE_CHDIR +static char * Check_Cwd_av __P((int, char **, int)); +#endif +static void MainParseArgs __P((int, char **)); +char * chdir_verify_path __P((char *, char *)); +static int ReadMakefile __P((ClientData, ClientData)); +static void usage __P((void)); + +static char *curdir; /* startup directory */ +static char *objdir; /* where we chdir'ed to */ +char *progname; /* the program name */ + +Boolean forceJobs = FALSE; + +/* + * On some systems MACHINE is defined as something other than + * what we want. + */ +#ifdef FORCE_MACHINE +# undef MACHINE +# define MACHINE FORCE_MACHINE +#endif + +extern Lst parseIncPath; + +/*- + * 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(argc, argv) + int argc; + char **argv; +{ + char *p; + int c; + + if (argv[0] == 0) + argv[0] = progname; /* avoid problems in getopt */ + + optind = 1; /* since we're called more than once */ +#ifdef REMOTE +# define OPTFLAGS "BD:I:J:L:NPST:V:Wd:ef:ij:km:nqrst" +#else +# define OPTFLAGS "BD:I:J:NPST:V:Wd:ef:ij:km:nqrst" +#endif +rearg: while((c = getopt(argc, argv, OPTFLAGS)) != -1) { + switch(c) { + 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; + case 'V': + printVars = TRUE; + (void)Lst_AtEnd(variables, (ClientData)optarg); + Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); + Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); + break; + case 'B': + compatMake = 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 'W': + parseWarnFatal = TRUE; + 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 'f': + debug |= DEBUG_FOR; + break; + case 'g': + if (modules[1] == '1') { + debug |= DEBUG_GRAPH1; + ++modules; + } + else if (modules[1] == '2') { + debug |= DEBUG_GRAPH2; + ++modules; + } + break; + case 'j': + debug |= DEBUG_JOB; + break; + case 'm': + debug |= DEBUG_MAKE; + 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': + (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; + default: + case '?': +#ifdef MAKE_BOOTSTRAP + fprintf(stderr, "getopt(%s) -> %d (%c)\n", + OPTFLAGS, c, c); +#endif + usage(); + } + } + + 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 (argv += optind, argc -= optind; *argv; ++argv, --argc) + if (Parse_IsVar(*argv)) { + Parse_DoVar(*argv, VAR_CMD); + } else { + if (!**argv) + Punt("illegal (null) argument."); + if (**argv == '-') { + if ((*argv)[1]) + optind = 0; /* -flag... */ + else + optind = 1; /* - */ + goto rearg; + } + (void)Lst_AtEnd(create, (ClientData)estrdup(*argv)); + } +} + +/*- + * Main_ParseArgLine -- + * Used by the parse module when a .MFLAGS or .MAKEFLAGS target + * is encountered and by main() when reading the .MAKEFLAGS envariable. + * Takes a line of arguments and breaks it into its + * component words and passes those words and the number of them to the + * MainParseArgs function. + * The line should have all its leading whitespace removed. + * + * Results: + * None + * + * Side Effects: + * Only those that come from the various arguments. + */ +void +Main_ParseArgLine(line) + char *line; /* Line to fracture */ +{ + char **argv; /* Manufactured argument vector */ + int argc; /* Number of arguments in argv */ + char *args; /* Space used by the args */ + char *buf, *p1; + char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); + size_t len; + + if (line == NULL) + return; + for (; *line == ' '; ++line) + continue; + if (!*line) + return; + +#ifndef POSIX + { + /* + * $MAKE may simply be naming the make(1) binary + */ + char *cp; + + if (!(cp = strrchr(line, '/'))) + cp = line; + if ((cp = strstr(cp, "make")) && + strcmp(cp, "make") == 0) + return; + } +#endif + buf = emalloc(len = strlen(line) + strlen(argv0) + 2); + (void)snprintf(buf, len, "%s %s", argv0, line); + if (p1) + free(p1); + + argv = brk_string(buf, &argc, TRUE, &args); + free(buf); + MainParseArgs(argc, argv); + + free(args); + free(argv); +} + +char * +chdir_verify_path(path, obpath) + char *path; + char *obpath; +{ + struct stat sb; + + if (strchr(path, '$') != 0) { + path = Var_Subst(NULL, path, VAR_GLOBAL, 0); + } + if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { + if (chdir(path)) { + (void)fprintf(stderr, "make warning: %s: %s.\n", + path, strerror(errno)); + return 0; + } + else { + if (path[0] != '/') { + (void) snprintf(obpath, MAXPATHLEN, "%s/%s", + curdir, path); + return obpath; + } + else + return path; + } + } + + return 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(argc, argv) + 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, *pathp, *pwd, *getenv(), *getcwd(); + char mdpath[MAXPATHLEN + 1]; + char obpath[MAXPATHLEN + 1]; + char cdpath[MAXPATHLEN + 1]; +#ifdef FORCE_MACHINE + char *machine = FORCE_MACHINE; +#else + char *machine = getenv("MACHINE"); +#endif + 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; + + 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. + */ + curdir = cdpath; + 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 $PWD) + * or via subdir.mk in which case its likely a shell which does + * not provide it. + * So, to stop it breaking this case only, we ignore PWD if + * MAKEOBJDIRPREFIX is set. + */ +#ifndef NO_PWD_OVERRIDE + if ((pwd = getenv("PWD")) != NULL && + getenv("MAKEOBJDIRPREFIX") == NULL) { + if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && + sa.st_dev == sb.st_dev) + (void) strcpy(curdir, pwd); + } +#endif + /* + * Get the name of this type of MACHINE from utsname + * so we can share an executable for similar machines. + * (i.e. m68k: amiga hp300, mac68k, sun3, ...) + * + * Note that both MACHINE and MACHINE_ARCH are decided at + * run-time. + */ + if (!machine) { +#ifndef MAKE_BOOTSTRAP + struct utsname utsname; + + if (uname(&utsname) == -1) { + (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, + strerror(errno)); + exit(2); + } + machine = utsname.machine; +#else + machine = MACHINE; +#endif + } + + if (!machine_arch) { +#ifndef MACHINE_ARCH +#ifdef __ARCHITECTURE__ + machine_arch = __ARCHITECTURE__; +#else + machine_arch = "unknown"; /* XXX: no uname -p yet */ +#endif +#else + machine_arch = MACHINE_ARCH; +#endif + } + + /* + * Just in case MAKEOBJDIR wants us to do something tricky. + */ + Var_Init(); /* Initialize the lists of variables for + * parsing arguments */ + Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); + Var_Set("MACHINE", machine, VAR_GLOBAL, 0); + Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); +#ifdef MAKE_VERSION + Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); +#endif + Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ + + /* + * If the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory + * exists, change into it and build there. (If a .${MACHINE} suffix + * exists, use that directory instead). + * Otherwise check MAKEOBJDIRPREFIX`cwd` (or by default, + * _PATH_OBJDIRPREFIX`cwd`) and build there if it exists. + * If all fails, use the current directory to build. + * + * Once things are initted, + * have to add the original directory to the search path, + * and modify the paths for the Makefiles apropriately. The + * current directory is also placed as a variable for make scripts. + */ + if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) { + if (!(path = getenv("MAKEOBJDIR"))) { + path = _PATH_OBJDIR; +#ifdef _PATH_OBJDIRPREFIX + pathp = _PATH_OBJDIRPREFIX; +#endif + (void) snprintf(mdpath, MAXPATHLEN, "%s.%s", + path, machine); + if (!(objdir = chdir_verify_path(mdpath, obpath))) + if (!(objdir=chdir_verify_path(path, obpath))) { +#ifdef _PATH_OBJDIRPREFIX + (void) snprintf(mdpath, MAXPATHLEN, + "%s%s", pathp, curdir); + if (!(objdir=chdir_verify_path(mdpath, + obpath))) +#endif + objdir = curdir; + } + } + else if (!(objdir = chdir_verify_path(path, obpath))) + objdir = curdir; + } + else { + (void) snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir); + if (!(objdir = chdir_verify_path(mdpath, obpath))) + objdir = curdir; + } + + setenv("PWD", objdir, 1); + + 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 directory structures so -I flags can be processed + * correctly, if we have a different objdir, then let the directory + * know our curdir. + */ + Dir_Init(curdir != objdir ? curdir : NULL); + Parse_Init(); /* Need to initialize the paths of #include + * directories */ + Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); + + /* + * 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. + */ + 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); + + /* + * 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 (Lst_IsEmpty(sysIncPath)) { + 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 == '\0') { + (void) Dir_AddDir(sysIncPath, start); + } else { + *cp++ = '\0'; + (void) Dir_AddDir(sysIncPath, start); + } + } + if (syspath != defsyspath) + free(syspath); + } + + /* + * Read in the built-in rules first, followed by the specified + * makefile, if it was (makefile != (char *) 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, 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("makefile", NULL)) + (void)ReadMakefile("Makefile", NULL); + + (void)ReadMakefile(".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); + + ExportMAKEFLAGS(1); /* 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, *path, *cp, 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 == ':'); + (void)free((Address)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 *value = Var_Value((char *)Lst_Datum(ln), + 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, (void (*) __P((ClientData))) 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); +} + +/*- + * ReadMakefile -- + * Open and parse the given makefile. + * + * Results: + * TRUE if ok. FALSE if couldn't open file. + * + * Side Effects: + * lots + */ +static Boolean +ReadMakefile(p, q) + ClientData p, q; +{ + char *fname = p; /* makefile to read */ + FILE *stream; + size_t len = MAXPATHLEN; + char *name, *path = emalloc(len); + int setMAKEFILE; + + if (!strcmp(fname, "-")) { + Parse_File("(stdin)", stdin); + Var_Set("MAKEFILE", "", VAR_GLOBAL, 0); + } else { + setMAKEFILE = strcmp(fname, ".depend"); + + /* if we've chdir'd, rebuild the path name */ + if (curdir != objdir && *fname != '/') { + size_t plen = strlen(curdir) + strlen(fname) + 2; + if (len < plen) + path = erealloc(path, len = 2 * plen); + + (void)snprintf(path, len, "%s/%s", curdir, fname); + if ((stream = fopen(path, "r")) != NULL) { + fname = path; + goto found; + } + } else if ((stream = fopen(fname, "r")) != NULL) + goto found; + /* look in -I and system include directories. */ + name = Dir_FindFile(fname, parseIncPath); + if (!name) + name = Dir_FindFile(fname, sysIncPath); + if (!name || !(stream = fopen(name, "r"))) { + free(path); + return(FALSE); + } + fname = name; + /* + * set the MAKEFILE variable desired by System V fans -- the + * placement of the setting here means it gets set to the last + * makefile specified, as it is set by SysV make. + */ +found: + if (setMAKEFILE) + Var_Set("MAKEFILE", fname, VAR_GLOBAL, 0); + Parse_File(fname, stream); + (void)fclose(stream); + } + free(path); + return(TRUE); +} + + +/* + * If MAKEOBJDIRPREFIX is in use, make ends up not in .CURDIR + * in situations that would not arrise with ./obj (links or not). + * This tends to break things like: + * + * build: + * ${MAKE} includes + * + * This function spots when ${.MAKE:T} or ${.MAKE} is a command (as + * opposed to an argument) in a command line and if so returns + * ${.CURDIR} so caller can chdir() so that the assumptions made by + * the Makefile hold true. + * + * If ${.MAKE} does not contain any '/', then ${.MAKE:T} is skipped. + * + * The chdir() only happens in the child process, and does nothing if + * MAKEOBJDIRPREFIX and MAKEOBJDIR are not in the environment so it + * should not break anything. Also if NOCHECKMAKECHDIR is set we + * do nothing - to ensure historic semantics can be retained. + */ +#ifdef NO_CHECK_MAKE_CHDIR +char * +Check_Cwd_Cmd(cmd) + char *cmd; +{ + return 0; +} + +void +Check_Cwd(argv) + char **argv; +{ + return; +} + +#else + +static int Check_Cwd_Off = 0; + +static char * +Check_Cwd_av(ac, av, copy) + int ac; + char **av; + int copy; +{ + static char *make[4]; + static char *curdir = NULL; + char *cp, **mp; + int is_cmd, next_cmd; + int i; + int n; + + if (Check_Cwd_Off) + return NULL; + + if (make[0] == NULL) { + if (Var_Exists("NOCHECKMAKECHDIR", VAR_GLOBAL)) { + Check_Cwd_Off = 1; + return NULL; + } + + make[1] = Var_Value(".MAKE", VAR_GLOBAL, &cp); + if ((make[0] = strrchr(make[1], '/')) == NULL) { + make[0] = make[1]; + make[1] = NULL; + } else + ++make[0]; + make[2] = NULL; + curdir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); + } + if (ac == 0 || av == NULL) + return NULL; /* initialization only */ + + if (getenv("MAKEOBJDIR") == NULL && + getenv("MAKEOBJDIRPREFIX") == NULL) + return NULL; + + + next_cmd = 1; + for (i = 0; i < ac; ++i) { + is_cmd = next_cmd; + + n = strlen(av[i]); + cp = &(av[i])[n - 1]; + if (strspn(av[i], "|&;") == n) { + next_cmd = 1; + continue; + } else if (*cp == ';' || *cp == '&' || *cp == '|' || *cp == ')') { + next_cmd = 1; + if (copy) { + do { + *cp-- = '\0'; + } while (*cp == ';' || *cp == '&' || *cp == '|' || + *cp == ')' || *cp == '}') ; + } else { + /* + * XXX this should not happen. + */ + fprintf(stderr, "WARNING: raw arg ends in shell meta '%s'\n", + av[i]); + } + } else + next_cmd = 0; + + cp = av[i]; + if (*cp == ';' || *cp == '&' || *cp == '|') + is_cmd = 1; + +#ifdef check_cwd_debug + fprintf(stderr, "av[%d] == %s '%s'", + i, (is_cmd) ? "cmd" : "arg", av[i]); +#endif + if (is_cmd != 0) { + if (*cp == '(' || *cp == '{' || + *cp == ';' || *cp == '&' || *cp == '|') { + do { + ++cp; + } while (*cp == '(' || *cp == '{' || + *cp == ';' || *cp == '&' || *cp == '|'); + if (*cp == '\0') { + next_cmd = 1; + continue; + } + } + if (strcmp(cp, "cd") == 0 || strcmp(cp, "chdir") == 0) { +#ifdef check_cwd_debug + fprintf(stderr, " == cd, done.\n"); +#endif + return NULL; + } + for (mp = make; *mp != NULL; ++mp) { + n = strlen(*mp); + if (strcmp(cp, *mp) == 0) { +#ifdef check_cwd_debug + fprintf(stderr, " %s == '%s', chdir(%s)\n", + cp, *mp, curdir); +#endif + return curdir; + } + } + } +#ifdef check_cwd_debug + fprintf(stderr, "\n"); +#endif + } + return NULL; +} + +char * +Check_Cwd_Cmd(cmd) + char *cmd; +{ + char *cp, *bp, **av; + int ac; + + if (Check_Cwd_Off) + return NULL; + + if (cmd) { + av = brk_string(cmd, &ac, TRUE, &bp); +#ifdef check_cwd_debug + fprintf(stderr, "splitting: '%s' -> %d words\n", + cmd, ac); +#endif + } else { + ac = 0; + av = NULL; + bp = NULL; + } + cp = Check_Cwd_av(ac, av, 1); + if (bp) { + free(av); + free(bp); + } + return cp; +} + +void +Check_Cwd(argv) + char **argv; +{ + char *cp; + int ac; + + if (Check_Cwd_Off) + return; + + for (ac = 0; argv[ac] != NULL; ++ac) + /* NOTHING */; + if (ac == 3 && *argv[1] == '-') { + cp = Check_Cwd_Cmd(argv[2]); + } else { + cp = Check_Cwd_av(ac, argv, 0); + } + if (cp) { + chdir(cp); + } +} +#endif /* NO_CHECK_MAKE_CHDIR */ + +/*- + * Cmd_Exec -- + * Execute the command in cmd, and return the output of that command + * in a string. + * + * Results: + * A string containing the output of the command, or the empty string + * If err is not NULL, it contains the reason for the command failure + * + * Side Effects: + * The string must be freed by the caller. + */ +char * +Cmd_Exec(cmd, err) + char *cmd; + char **err; +{ + char *args[4]; /* Args for invoking the shell */ + int fds[2]; /* Pipe streams */ + int cpid; /* Child PID */ + int pid; /* PID from wait() */ + char *res; /* result */ + int status; /* command exit status */ + Buffer buf; /* buffer to store the result */ + char *cp; + int cc; + + + *err = NULL; + + /* + * Set up arguments for shell + */ + args[0] = "sh"; + args[1] = "-c"; + args[2] = cmd; + args[3] = NULL; + + /* + * Open a pipe for fetching its output + */ + if (pipe(fds) == -1) { + *err = "Couldn't create pipe for \"%s\""; + goto bad; + } + + /* + * Fork + */ + switch (cpid = vfork()) { + case 0: + /* + * Close input side of pipe + */ + (void) close(fds[0]); + + /* + * Duplicate the output stream to the shell's output, then + * shut the extra thing down. Note we don't fetch the error + * stream...why not? Why? + */ + (void) dup2(fds[1], 1); + (void) close(fds[1]); + + (void) execv("/bin/sh", args); + _exit(1); + /*NOTREACHED*/ + + case -1: + *err = "Couldn't exec \"%s\""; + goto bad; + + default: + /* + * No need for the writing half + */ + (void) close(fds[1]); + + buf = Buf_Init (MAKE_BSIZE); + + do { + char result[BUFSIZ]; + cc = read(fds[0], result, sizeof(result)); + if (cc > 0) + Buf_AddBytes(buf, cc, (Byte *) result); + } + while (cc > 0 || (cc == -1 && errno == EINTR)); + + /* + * Close the input side of the pipe. + */ + (void) close(fds[0]); + + /* + * Wait for the process to exit. + */ + while(((pid = wait(&status)) != cpid) && (pid >= 0)) + continue; + + res = (char *)Buf_GetAll (buf, &cc); + Buf_Destroy (buf, FALSE); + + if (cc == 0) + *err = "Couldn't read shell's output for \"%s\""; + + if (status) + *err = "\"%s\" returned non-zero status"; + + /* + * Null-terminate the result, convert newlines to spaces and + * install it in the variable. + */ + res[cc] = '\0'; + cp = &res[cc]; + + if (cc > 0 && *--cp == '\n') { + /* + * A final newline is just stripped + */ + *cp-- = '\0'; + } + while (cp >= res) { + if (*cp == '\n') { + *cp = ' '; + } + cp--; + } + break; + } + return res; +bad: + res = emalloc(1); + *res = '\0'; + return res; +} + +/*- + * Error -- + * Print an error message given its format. + * + * Results: + * None. + * + * Side Effects: + * The message is printed. + */ +/* VARARGS */ +void +#ifdef __STDC__ +Error(char *fmt, ...) +#else +Error(va_alist) + va_dcl +#endif +{ + va_list ap; +#ifdef __STDC__ + va_start(ap, fmt); +#else + char *fmt; + + va_start(ap); + fmt = va_arg(ap, char *); +#endif + fprintf(stderr, "%s: ", progname); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); + (void)fflush(stderr); +} + +/*- + * Fatal -- + * Produce a Fatal error message. If jobs are running, waits for them + * to finish. + * + * Results: + * None + * + * Side Effects: + * The program exits + */ +/* VARARGS */ +void +#ifdef __STDC__ +Fatal(char *fmt, ...) +#else +Fatal(va_alist) + va_dcl +#endif +{ + va_list ap; +#ifdef __STDC__ + va_start(ap, fmt); +#else + char *fmt; + + va_start(ap); + fmt = va_arg(ap, char *); +#endif + if (jobsRunning) + Job_Wait(); + Job_TokenFlush(); + + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); + (void)fflush(stderr); + + PrintOnError(NULL); + + if (DEBUG(GRAPH2)) + Targ_PrintGraph(2); + Trace_Log(MAKEERROR, 0); + exit(2); /* Not 1 so -q can distinguish error */ +} + +/* + * Punt -- + * Major exception once jobs are being created. Kills all jobs, prints + * a message and exits. + * + * Results: + * None + * + * Side Effects: + * All children are killed indiscriminately and the program Lib_Exits + */ +/* VARARGS */ +void +#ifdef __STDC__ +Punt(char *fmt, ...) +#else +Punt(va_alist) + va_dcl +#endif +{ + va_list ap; +#ifdef __STDC__ + va_start(ap, fmt); +#else + char *fmt; + + va_start(ap); + fmt = va_arg(ap, char *); +#endif + + (void)fprintf(stderr, "%s: ", progname); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); + (void)fflush(stderr); + + PrintOnError(NULL); + + DieHorribly(); +} + +/*- + * DieHorribly -- + * Exit without giving a message. + * + * Results: + * None + * + * Side Effects: + * A big one... + */ +void +DieHorribly() +{ + if (jobsRunning) + Job_AbortAll(); + if (DEBUG(GRAPH2)) + Targ_PrintGraph(2); + Trace_Log(MAKEERROR, 0); + exit(2); /* Not 1, so -q can distinguish error */ +} + +/* + * Finish -- + * Called when aborting due to errors in child shell to signal + * abnormal exit. + * + * Results: + * None + * + * Side Effects: + * The program exits + */ +void +Finish(errors) + int errors; /* number of errors encountered in Make_Make */ +{ + Fatal("%d error%s", errors, errors == 1 ? "" : "s"); +} + +/* + * emalloc -- + * malloc, but die on error. + */ +void * +emalloc(len) + size_t len; +{ + void *p; + + if ((p = malloc(len)) == NULL) + enomem(); + return(p); +} + +/* + * estrdup -- + * strdup, but die on error. + */ +char * +estrdup(str) + const char *str; +{ + char *p; + + if ((p = strdup(str)) == NULL) + enomem(); + return(p); +} + +/* + * erealloc -- + * realloc, but die on error. + */ +void * +erealloc(ptr, size) + void *ptr; + size_t size; +{ + if ((ptr = realloc(ptr, size)) == NULL) + enomem(); + return(ptr); +} + +/* + * enomem -- + * die when out of memory. + */ +void +enomem() +{ + (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); + exit(2); +} + +/* + * enunlink -- + * Remove a file carefully, avoiding directories. + */ +int +eunlink(file) + const char *file; +{ + struct stat st; + + if (lstat(file, &st) == -1) + return -1; + + if (S_ISDIR(st.st_mode)) { + errno = EISDIR; + return -1; + } + return unlink(file); +} + +/* + * execError -- + * Print why exec failed, avoiding stdio. + */ +void +execError(av) + const char *av; +{ +#ifdef USE_IOVEC + int i = 0; + struct iovec iov[6]; +#define IOADD(s) \ + (void)(iov[i].iov_base = (s), \ + iov[i].iov_len = strlen(iov[i].iov_base), \ + i++) +#else +#define IOADD (void)write(2, s, strlen(s)) +#endif + + IOADD(progname); + IOADD(": Exec of `"); + IOADD((char *)av); + IOADD("' failed ("); + IOADD(strerror(errno)); + IOADD(")\n"); + +#ifdef USE_IOVEC + (void)writev(2, iov, 6); +#endif +} + +/* + * usage -- + * exit with usage message + */ +static void +usage() +{ + (void)fprintf(stderr, +"Usage: %s [-Beiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ + [-I directory] [-j max_jobs] [-m directory] [-V variable]\n\ + [variable=value] [target ...]\n", progname); + exit(2); +} + + +int +PrintAddr(a, b) + ClientData a; + ClientData b; +{ + printf("%lx ", (unsigned long) a); + return b ? 0 : 0; +} + + + +void +PrintOnError(s) + char *s; +{ + char tmp[64]; + + if (s) + printf("%s", s); + + printf("\n%s: stopped in %s\n", progname, curdir); + strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", + sizeof(tmp) - 1); + s = Var_Subst(NULL, tmp, VAR_GLOBAL, 0); + if (s && *s) + printf("%s", s); +} + +void +ExportMAKEFLAGS(first) + int first; +{ + static int once = 1; + char tmp[64]; + char *s; + + if (once != first) + return; + once = 0; + + strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", + sizeof(tmp)); + s = Var_Subst(NULL, tmp, VAR_CMD, 0); + if (s && *s) { +#ifdef POSIX + setenv("MAKEFLAGS", s, 1); +#else + setenv("MAKE", s, 1); +#endif + } +} |