/*- * 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. * * @(#)main.c 8.3 (Berkeley) 3/19/94 */ #ifndef lint #if 0 static char copyright[] = "@(#) Copyright (c) 1988, 1989, 1990, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif #endif /* not lint */ #include __FBSDID("$FreeBSD$"); /* * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "arch.h" #include "buf.h" #include "config.h" #include "dir.h" #include "globals.h" #include "GNode.h" #include "job.h" #include "make.h" #include "parse.h" #include "pathnames.h" #include "shell.h" #include "str.h" #include "suff.h" #include "targ.h" #include "util.h" #include "var.h" extern char **environ; /* XXX what header declares this variable? */ #define WANT_ENV_MKLVL 1 #define MKLVL_MAXVAL 500 #define MKLVL_ENVVAR "__MKLVL__" /* ordered list of makefiles to read */ static Lst makefiles = Lst_Initializer(makefiles); /* ordered list of source makefiles */ static Lst source_makefiles = Lst_Initializer(source_makefiles); /* list of variables to print */ static Lst variables = Lst_Initializer(variables); static Boolean expandVars; /* fully expand printed variables */ static Boolean noBuiltins; /* -r flag */ static Boolean forceJobs; /* -j argument given */ static char *curdir; /* startup directory */ static char *objdir; /* where we chdir'ed to */ static char **save_argv; /* saved argv */ static char *save_makeflags;/* saved MAKEFLAGS */ /* (-E) vars to override from env */ Lst envFirstVars = Lst_Initializer(envFirstVars); /* Targets to be made */ Lst create = Lst_Initializer(create); Boolean allPrecious; /* .PRECIOUS given on line by itself */ Boolean is_posix; /* .POSIX target seen */ Boolean mfAutoDeps; /* .MAKEFILEDEPS target seen */ Boolean remakingMakefiles; /* True if remaking makefiles is in progress */ Boolean beSilent; /* -s flag */ Boolean beVerbose; /* -v flag */ Boolean beQuiet; /* -Q flag */ Boolean compatMake; /* -B argument */ int debug; /* -d flag */ Boolean ignoreErrors; /* -i flag */ int jobLimit; /* -j argument */ int makeErrors; /* Number of targets not remade due to errors */ Boolean jobsRunning; /* TRUE if the jobs might be running */ Boolean keepgoing; /* -k flag */ Boolean noExecute; /* -n flag */ Boolean printGraphOnly; /* -p flag */ Boolean queryFlag; /* -q flag */ Boolean touchFlag; /* -t flag */ Boolean usePipes; /* !-P flag */ uint32_t warn_cmd; /* command line warning flags */ uint32_t warn_flags; /* actual warning flags */ uint32_t warn_nocmd; /* command line no-warning flags */ time_t now; /* Time at start of make */ struct GNode *DEFAULT; /* .DEFAULT node */ static struct { const char *foreign_name; const char *freebsd_name; } arch_aliases[] = { { "x86_64", "amd64" }, { "mipsel", "mips" }, }; /** * Exit with usage message. */ static void usage(void) { fprintf(stderr, "usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]\n" "\t[-d flags] [-E variable] [-f makefile] [-I directory]\n" "\t[-j max_jobs] [-m directory] [-V variable]\n" "\t[variable=value] [target ...]\n"); exit(2); } /** * MFLAGS_append * Append a flag with an optional argument to MAKEFLAGS and MFLAGS */ static void MFLAGS_append(const char *flag, char *arg) { char *str; Var_Append(".MAKEFLAGS", flag, VAR_GLOBAL); if (arg != NULL) { str = MAKEFLAGS_quote(arg); Var_Append(".MAKEFLAGS", str, VAR_GLOBAL); free(str); } Var_Append("MFLAGS", flag, VAR_GLOBAL); if (arg != NULL) { str = MAKEFLAGS_quote(arg); Var_Append("MFLAGS", str, VAR_GLOBAL); free(str); } } /** * Main_ParseWarn * * Handle argument to warning option. */ int Main_ParseWarn(const char *arg, int iscmd) { int i, neg; static const struct { const char *option; uint32_t flag; } options[] = { { "dirsyntax", WARN_DIRSYNTAX }, { NULL, 0 } }; neg = 0; if (arg[0] == 'n' && arg[1] == 'o') { neg = 1; arg += 2; } for (i = 0; options[i].option != NULL; i++) if (strcmp(arg, options[i].option) == 0) break; if (options[i].option == NULL) /* unknown option */ return (-1); if (iscmd) { if (!neg) { warn_cmd |= options[i].flag; warn_nocmd &= ~options[i].flag; warn_flags |= options[i].flag; } else { warn_nocmd |= options[i].flag; warn_cmd &= ~options[i].flag; warn_flags &= ~options[i].flag; } } else { if (!neg) { warn_flags |= (options[i].flag & ~warn_nocmd); } else { warn_flags &= ~(options[i].flag | warn_cmd); } } return (0); } /** * Open and parse the given makefile. * * Results: * TRUE if ok. FALSE if couldn't open file. */ static Boolean ReadMakefile(const char p[]) { char *fname, *fnamesave; /* makefile to read */ FILE *stream; char *name, path[MAXPATHLEN]; char *MAKEFILE; int setMAKEFILE; /* XXX - remove this once constification is done */ fnamesave = fname = estrdup(p); if (!strcmp(fname, "-")) { Parse_File("(stdin)", stdin); Var_SetGlobal("MAKEFILE", ""); } else { setMAKEFILE = strcmp(fname, ".depend"); /* if we've chdir'd, rebuild the path name */ if (curdir != objdir && *fname != '/') { snprintf(path, MAXPATHLEN, "%s/%s", curdir, fname); /* * XXX The realpath stuff breaks relative includes * XXX in some cases. The problem likely is in * XXX parse.c where it does special things in * XXX ParseDoInclude if the file is relative * XXX or absolute and not a system file. There * XXX it assumes that if the current file that's * XXX being included is absolute, that any files * XXX that it includes shouldn't do the -I path * XXX stuff, which is inconsistent with historical * XXX behavior. However, I can't penetrate the mists * XXX further, so I'm putting this workaround in * XXX here until such time as the underlying bug * XXX can be fixed. */ #if THIS_BREAKS_THINGS if (realpath(path, path) != NULL && (stream = fopen(path, "r")) != NULL) { MAKEFILE = fname; fname = path; goto found; } } else if (realpath(fname, path) != NULL) { MAKEFILE = fname; fname = path; if ((stream = fopen(fname, "r")) != NULL) goto found; } #else if ((stream = fopen(path, "r")) != NULL) { MAKEFILE = fname; fname = path; goto found; } } else { MAKEFILE = fname; if ((stream = fopen(fname, "r")) != NULL) goto found; } #endif /* look in -I and system include directories. */ name = Path_FindFile(fname, &parseIncPath); if (!name) name = Path_FindFile(fname, &sysIncPath); if (!name || !(stream = fopen(name, "r"))) { free(fnamesave); return (FALSE); } MAKEFILE = 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_SetGlobal("MAKEFILE", MAKEFILE); Parse_File(fname, stream); } free(fnamesave); return (TRUE); } /** * Open and parse the given makefile. * If open is successful add it to the list of makefiles. * * Results: * TRUE if ok. FALSE if couldn't open file. */ static Boolean TryReadMakefile(const char p[]) { char *data; LstNode *last = Lst_Last(&source_makefiles); if (!ReadMakefile(p)) return (FALSE); data = estrdup(p); if (last == NULL) { LstNode *first = Lst_First(&source_makefiles); Lst_Insert(&source_makefiles, first, data); } else Lst_Append(&source_makefiles, last, estrdup(p)); return (TRUE); } /** * 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 * * Side Effects: * Various global and local flags will be set depending on the flags * given */ static void MainParseArgs(int argc, char **argv) { int c; Boolean found_dd = FALSE; char found_dir[MAXPATHLEN + 1]; /* for searching for sys.mk */ rearg: optind = 1; /* since we're called more than once */ optreset = 1; #define OPTFLAGS "ABC:D:d:E:ef:I:ij:km:nPpQqrSstV:vXx:" for (;;) { if ((optind < argc) && strcmp(argv[optind], "--") == 0) { found_dd = TRUE; } if ((c = getopt(argc, argv, OPTFLAGS)) == -1) { break; } switch(c) { case 'A': arch_fatal = FALSE; MFLAGS_append("-A", NULL); break; case 'B': compatMake = TRUE; MFLAGS_append("-B", NULL); unsetenv("MAKE_JOBS_FIFO"); break; case 'C': if (chdir(optarg) == -1) err(1, "chdir %s", optarg); if (getcwd(curdir, MAXPATHLEN) == NULL) err(2, NULL); break; case 'D': Var_SetGlobal(optarg, "1"); MFLAGS_append("-D", optarg); 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 'l': debug |= DEBUG_LOUD; 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; default: warnx("illegal argument to d option " "-- %c", *modules); usage(); } MFLAGS_append("-d", optarg); break; } case 'E': Lst_AtEnd(&envFirstVars, estrdup(optarg)); MFLAGS_append("-E", optarg); break; case 'e': checkEnvFirst = TRUE; MFLAGS_append("-e", NULL); break; case 'f': Lst_AtEnd(&makefiles, estrdup(optarg)); break; case 'I': Parse_AddIncludeDir(optarg); MFLAGS_append("-I", optarg); break; case 'i': ignoreErrors = TRUE; MFLAGS_append("-i", NULL); break; case 'j': { char *endptr; forceJobs = TRUE; jobLimit = strtol(optarg, &endptr, 10); if (jobLimit <= 0 || *endptr != '\0') { warnx("illegal number, -j argument -- %s", optarg); usage(); } MFLAGS_append("-j", optarg); break; } case 'k': keepgoing = TRUE; MFLAGS_append("-k", NULL); break; case 'm': /* look for magic parent directory search string */ if (strncmp(".../", optarg, 4) == 0) { if (!Dir_FindHereOrAbove(curdir, optarg + 4, found_dir, sizeof(found_dir))) break; /* nothing doing */ Path_AddDir(&sysIncPath, found_dir); } else { Path_AddDir(&sysIncPath, optarg); } MFLAGS_append("-m", optarg); break; case 'n': noExecute = TRUE; MFLAGS_append("-n", NULL); break; case 'P': usePipes = FALSE; MFLAGS_append("-P", NULL); break; case 'p': printGraphOnly = TRUE; debug |= DEBUG_GRAPH1; break; case 'Q': beQuiet = TRUE; beVerbose = FALSE; MFLAGS_append("-Q", NULL); break; case 'q': queryFlag = TRUE; /* Kind of nonsensical, wot? */ MFLAGS_append("-q", NULL); break; case 'r': noBuiltins = TRUE; MFLAGS_append("-r", NULL); break; case 'S': keepgoing = FALSE; MFLAGS_append("-S", NULL); break; case 's': beSilent = TRUE; MFLAGS_append("-s", NULL); break; case 't': touchFlag = TRUE; MFLAGS_append("-t", NULL); break; case 'V': Lst_AtEnd(&variables, estrdup(optarg)); MFLAGS_append("-V", optarg); break; case 'v': beVerbose = TRUE; beQuiet = FALSE; MFLAGS_append("-v", NULL); break; case 'X': expandVars = FALSE; break; case 'x': if (Main_ParseWarn(optarg, 1) != -1) MFLAGS_append("-x", optarg); break; default: case '?': usage(); } } argv += optind; argc -= optind; oldVars = TRUE; /* * Parse the rest of the arguments. * o Check for variable assignments and perform them if so. * o Check for more flags and restart getopt if so. * o Anything else is taken to be a target and added * to the end of the "create" list. */ for (; *argv != NULL; ++argv, --argc) { if (Parse_IsVar(*argv)) { char *ptr = MAKEFLAGS_quote(*argv); char *v = estrdup(*argv); Var_Append(".MAKEFLAGS", ptr, VAR_GLOBAL); Parse_DoVar(v, VAR_CMD); free(ptr); free(v); } else if ((*argv)[0] == '-') { if ((*argv)[1] == '\0') { /* * (*argv) is a single dash, so we * just ignore it. */ } else if (found_dd) { /* * Double dash has been found, ignore * any more options. But what do we do * with it? For now treat it like a target. */ Lst_AtEnd(&create, estrdup(*argv)); } else { /* * (*argv) is a -flag, so backup argv and * argc. getopt() expects options to start * in the 2nd position. */ argc++; argv--; goto rearg; } } else if ((*argv)[0] == '\0') { Punt("illegal (null) argument."); } else { Lst_AtEnd(&create, 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. * * Side Effects: * Only those that come from the various arguments. */ void Main_ParseArgLine(char *line, int mflags) { ArgArray aa; if (line == NULL) return; for (; *line == ' '; ++line) continue; if (!*line) return; if (mflags) MAKEFLAGS_break(&aa, line); else brk_string(&aa, line, TRUE); MainParseArgs(aa.argc, aa.argv); ArgArray_Done(&aa); } static char * chdir_verify_path(const char *path, char *obpath) { struct stat sb; if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { if (chdir(path) == -1 || getcwd(obpath, MAXPATHLEN) == NULL) { warn("warning: %s", path); return (NULL); } return (obpath); } return (NULL); } /** * In lieu of a good way to prevent every possible looping in make(1), stop * there from being more than MKLVL_MAXVAL processes forked by make(1), to * prevent a forkbomb from happening, in a dumb and mechanical way. * * Side Effects: * Creates or modifies environment variable MKLVL_ENVVAR via setenv(). */ static void check_make_level(void) { #ifdef WANT_ENV_MKLVL char *value = getenv(MKLVL_ENVVAR); int level = (value == NULL) ? 0 : atoi(value); if (level < 0) { errx(2, "Invalid value for recursion level (%d).", level); } else if (level > MKLVL_MAXVAL) { errx(2, "Max recursion level (%d) exceeded.", MKLVL_MAXVAL); } else { char new_value[32]; sprintf(new_value, "%d", level + 1); setenv(MKLVL_ENVVAR, new_value, 1); } #endif /* WANT_ENV_MKLVL */ } /** * Main_AddSourceMakefile * Add a file to the list of source makefiles */ void Main_AddSourceMakefile(const char *name) { Lst_AtEnd(&source_makefiles, estrdup(name)); } /** * Remake_Makefiles * Remake all the makefiles */ static void Remake_Makefiles(void) { Lst cleanup; LstNode *ln; int error_cnt = 0; int remade_cnt = 0; Compat_InstallSignalHandlers(); if (curdir != objdir) { if (chdir(curdir) < 0) Fatal("Failed to change directory to %s.", curdir); } Lst_Init(&cleanup); LST_FOREACH(ln, &source_makefiles) { LstNode *ln2; struct GNode *gn; const char *name = Lst_Datum(ln); Boolean saveTouchFlag = touchFlag; Boolean saveQueryFlag = queryFlag; Boolean saveNoExecute = noExecute; int mtime; /* * Create node */ gn = Targ_FindNode(name, TARG_CREATE); DEBUGF(MAKE, ("Checking %s...", gn->name)); Suff_FindDeps(gn); /* * -t, -q and -n has no effect unless the makefile is * specified as one of the targets explicitly in the * command line */ LST_FOREACH(ln2, &create) { if (!strcmp(gn->name, Lst_Datum(ln2))) { /* found as a target */ break; } } if (ln2 == NULL) { touchFlag = FALSE; queryFlag = FALSE; noExecute = FALSE; } /* * Check and remake the makefile */ mtime = Dir_MTime(gn); remakingMakefiles = TRUE; Compat_Make(gn, gn); remakingMakefiles = FALSE; /* * Restore -t, -q and -n behaviour */ touchFlag = saveTouchFlag; queryFlag = saveQueryFlag; noExecute = saveNoExecute; /* * Compat_Make will leave the 'made' field of gn * in one of the following states: * UPTODATE gn was already up-to-date * MADE gn was recreated successfully * ERROR An error occurred while gn was being created * ABORTED gn was not remade because one of its inferiors * could not be made due to errors. */ if (gn->made == MADE) { if (mtime != Dir_MTime(gn)) { DEBUGF(MAKE, ("%s updated (%d -> %d).\n", gn->name, mtime, gn->mtime)); remade_cnt++; } else { DEBUGF(MAKE, ("%s not updated: skipping restart.\n", gn->name)); } } else if (gn->made == ERROR) error_cnt++; else if (gn->made == ABORTED) { printf("`%s' not remade because of errors.\n", gn->name); error_cnt++; } else if (gn->made == UPTODATE) { Lst_EnQueue(&cleanup, gn); } } if (error_cnt > 0) Fatal("Failed to remake Makefiles."); if (remade_cnt > 0) { DEBUGF(MAKE, ("Restarting `%s'.\n", save_argv[0])); /* * Some of makefiles were remade -- restart from clean state */ if (save_makeflags != NULL) setenv("MAKEFLAGS", save_makeflags, 1); else unsetenv("MAKEFLAGS"); if (execvp(save_argv[0], save_argv) < 0) { Fatal("Can't restart `%s': %s.", save_argv[0], strerror(errno)); } } while (!Lst_IsEmpty(&cleanup)) { GNode *gn = Lst_DeQueue(&cleanup); gn->unmade = 0; gn->make = FALSE; gn->made = UNMADE; gn->childMade = FALSE; gn->mtime = gn->cmtime = 0; gn->cmtime_gn = NULL; LST_FOREACH(ln, &gn->children) { GNode *cgn = Lst_Datum(ln); gn->unmade++; Lst_EnQueue(&cleanup, cgn); } } if (curdir != objdir) { if (chdir(objdir) < 0) Fatal("Failed to change directory to %s.", objdir); } } /** * 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) { const char *machine; const char *machine_arch; const char *machine_cpu; Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ const char *p; const char *pathp; const char *path; char mdpath[MAXPATHLEN]; char obpath[MAXPATHLEN]; char cdpath[MAXPATHLEN]; char found_dir[MAXPATHLEN + 1]; /* for searching for sys.mk */ char *cp = NULL, *start; save_argv = argv; save_makeflags = getenv("MAKEFLAGS"); if (save_makeflags != NULL) save_makeflags = estrdup(save_makeflags); /* * Initialize file global variables. */ expandVars = TRUE; noBuiltins = FALSE; /* Read the built-in rules */ forceJobs = FALSE; /* No -j flag */ curdir = cdpath; /* * Initialize program global variables. */ beSilent = FALSE; /* Print commands as executed */ ignoreErrors = FALSE; /* Pay attention to non-zero returns */ noExecute = FALSE; /* Execute all commands */ printGraphOnly = FALSE; /* Don't stop after printing graph */ keepgoing = FALSE; /* Stop on error */ allPrecious = FALSE; /* Remove targets when interrupted */ queryFlag = FALSE; /* This is not just a check-run */ touchFlag = FALSE; /* Actually update targets */ usePipes = TRUE; /* Catch child output in pipes */ debug = 0; /* No debug verbosity, please. */ jobsRunning = FALSE; jobLimit = DEFMAXJOBS; compatMake = FALSE; /* No compat mode */ check_make_level(); #ifdef RLIMIT_NOFILE /* * get rid of resource limit on file descriptors */ { struct rlimit rl; if (getrlimit(RLIMIT_NOFILE, &rl) == -1) { err(2, "getrlimit"); } rl.rlim_cur = rl.rlim_max; if (setrlimit(RLIMIT_NOFILE, &rl) == -1) { err(2, "setrlimit"); } } #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 = getenv("MACHINE")) == NULL) { static struct utsname utsname; unsigned int i; if (uname(&utsname) == -1) err(2, "uname"); machine = utsname.machine; /* Canonicalize non-FreeBSD naming conventions */ for (i = 0; i < sizeof(arch_aliases) / sizeof(arch_aliases[0]); i++) if (!strcmp(machine, arch_aliases[i].foreign_name)) { machine = arch_aliases[i].freebsd_name; break; } } if ((machine_arch = getenv("MACHINE_ARCH")) == NULL) { #ifdef MACHINE_ARCH machine_arch = MACHINE_ARCH; #else machine_arch = "unknown"; #endif } /* * Set machine_cpu to the minimum supported CPU revision based * on the target architecture, if not already set. */ if ((machine_cpu = getenv("MACHINE_CPU")) == NULL) { if (!strcmp(machine_arch, "i386")) machine_cpu = "i486"; else machine_cpu = "unknown"; } /* * Initialize the parsing, directory and variable modules to prepare * for the reading of inclusion paths and variable settings on the * command line */ Proc_Init(); Dir_Init(); /* Initialize directory structures so -I flags * can be processed correctly */ Var_Init(environ); /* As well as the lists of variables for * parsing arguments */ /* * Initialize the Shell so that we have a shell for != assignments * on the command line. */ Shell_Init(); /* * 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_SetGlobal("MAKE", argv[0]); Var_SetGlobal(".MAKEFLAGS", ""); Var_SetGlobal("MFLAGS", ""); Var_SetGlobal("MACHINE", machine); Var_SetGlobal("MACHINE_ARCH", machine_arch); Var_SetGlobal("MACHINE_CPU", machine_cpu); #ifdef MAKE_VERSION Var_SetGlobal("MAKE_VERSION", MAKE_VERSION); #endif Var_SetGlobal(".newline", "\n"); /* handy for :@ loops */ { char tmp[64]; snprintf(tmp, sizeof(tmp), "%u", getpid()); Var_SetGlobal(".MAKE.PID", tmp); snprintf(tmp, sizeof(tmp), "%u", getppid()); Var_SetGlobal(".MAKE.PPID", tmp); } Job_SetPrefix(); /* * Find where we are... */ if (getcwd(curdir, MAXPATHLEN) == NULL) err(2, NULL); /* * First snag things out of the MAKEFLAGS environment * variable. Then parse the command line arguments. */ Main_ParseArgLine(getenv("MAKEFLAGS"), 1); MainParseArgs(argc, argv); /* * Verify that cwd is sane (after -C may have changed it). */ { struct stat sa; if (stat(curdir, &sa) == -1) err(2, "%s", curdir); } /* * The object directory location is determined using the * following order of preference: * * 1. MAKEOBJDIRPREFIX`cwd` * 2. MAKEOBJDIR * 3. PATH_OBJDIR.${MACHINE} * 4. PATH_OBJDIR * 5. PATH_OBJDIRPREFIX`cwd` * * If one of the first two fails, use the current directory. * If the remaining three all fail, use the current directory. * * Once things are initted, * have to add the original directory to the search path, * and modify the paths for the Makefiles appropriately. The * current directory is also placed as a variable for make scripts. */ if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) { if (!(path = getenv("MAKEOBJDIR"))) { path = PATH_OBJDIR; pathp = PATH_OBJDIRPREFIX; snprintf(mdpath, MAXPATHLEN, "%s.%s", path, machine); if (!(objdir = chdir_verify_path(mdpath, obpath))) if (!(objdir=chdir_verify_path(path, obpath))) { snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir); if (!(objdir=chdir_verify_path(mdpath, obpath))) objdir = curdir; } } else if (!(objdir = chdir_verify_path(path, obpath))) objdir = curdir; } else { snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir); if (!(objdir = chdir_verify_path(mdpath, obpath))) objdir = curdir; } Dir_InitDot(); /* Initialize the "." directory */ if (objdir != curdir) Path_AddDir(&dirSearchPath, curdir); Var_SetGlobal(".ST_EXPORTVAR", "YES"); Var_SetGlobal(".CURDIR", curdir); Var_SetGlobal(".OBJDIR", objdir); if (getenv("MAKE_JOBS_FIFO") != NULL) forceJobs = TRUE; /* * Be compatible if user did not specify -j and did not explicitly * turned compatibility on */ if (!compatMake && !forceJobs) compatMake = TRUE; /* * Initialize target and suffix modules in preparation for * parsing the makefile(s) */ Targ_Init(); Suff_Init(); DEFAULT = NULL; time(&now); /* * 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)) { Var_SetGlobal(".TARGETS", ""); } else { LstNode *ln; for (ln = Lst_First(&create); ln != NULL; ln = Lst_Succ(ln)) { char *name = Lst_Datum(ln); Var_Append(".TARGETS", name, VAR_GLOBAL); } } /* * 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 (TAILQ_EMPTY(&sysIncPath)) { char defsyspath[] = PATH_DEFSYSPATH; char *syspath = getenv("MAKESYSPATH"); /* * If no user-supplied system path was given (thru -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 = estrdup(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) { if (Dir_FindHereOrAbove(curdir, start + 4, found_dir, sizeof(found_dir))) { Path_AddDir(&sysIncPath, found_dir); } } else { Path_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) { /* Path of sys.mk */ Lst sysMkPath = Lst_Initializer(sysMkPath); LstNode *ln; char defsysmk[] = PATH_DEFSYSMK; Path_Expand(defsysmk, &sysIncPath, &sysMkPath); if (Lst_IsEmpty(&sysMkPath)) Fatal("make: no system rules (%s).", PATH_DEFSYSMK); LST_FOREACH(ln, &sysMkPath) { if (!ReadMakefile(Lst_Datum(ln))) break; } if (ln != NULL) Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); Lst_Destroy(&sysMkPath, free); } if (!Lst_IsEmpty(&makefiles)) { LstNode *ln; LST_FOREACH(ln, &makefiles) { if (!TryReadMakefile(Lst_Datum(ln))) break; } if (ln != NULL) Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); } else if (!TryReadMakefile("BSDmakefile")) if (!TryReadMakefile("makefile")) TryReadMakefile("Makefile"); ReadMakefile(".depend"); /* Install all the flags into the MAKEFLAGS envariable. */ if (((p = Var_Value(".MAKEFLAGS", VAR_GLOBAL)) != NULL) && *p) setenv("MAKEFLAGS", p, 1); else setenv("MAKEFLAGS", "", 1); /* * 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. * ::... */ if (Var_Exists("VPATH", VAR_CMD)) { /* * 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}"; Buffer *buf; char *vpath; char *ptr; char savec; buf = Var_Subst(VPATH, VAR_CMD, FALSE); vpath = Buf_Data(buf); do { /* skip to end of directory */ for (ptr = vpath; *ptr != ':' && *ptr != '\0'; ptr++) ; /* Save terminator character so know when to stop */ savec = *ptr; *ptr = '\0'; /* Add directory to search path */ Path_AddDir(&dirSearchPath, vpath); vpath = ptr + 1; } while (savec != '\0'); Buf_Destroy(buf, TRUE); } /* * 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(); /* 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 (Lst_IsEmpty(&variables) && !printGraphOnly) { /* * Since the user has not requested that any variables * be printed, we can build targets. * * Have 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. */ Lst targs = Lst_Initializer(targs); if (!is_posix && mfAutoDeps) { /* * Check if any of the makefiles are out-of-date. */ Remake_Makefiles(); } if (Lst_IsEmpty(&create)) Parse_MainName(&targs); else Targ_FindList(&targs, &create, TARG_CREATE); if (compatMake) { /* * Compat_Init will take care of creating * all the targets as well as initializing * the module. */ Compat_Run(&targs); outOfDate = 0; } else { /* * 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(jobLimit); jobsRunning = TRUE; } /* Traverse the graph, checking on all the targets */ outOfDate = Make_Run(&targs); } Lst_Destroy(&targs, NOFREE); } else { Var_Print(&variables, expandVars); } Lst_Destroy(&variables, free); Lst_Destroy(&makefiles, free); Lst_Destroy(&source_makefiles, free); Lst_Destroy(&create, free); /* print the graph now it's been processed if the user requested it */ if (DEBUG(GRAPH2)) Targ_PrintGraph(2); if (queryFlag) return (outOfDate); if (makeErrors != 0) Finish(makeErrors); return (0); }