/* $OpenPackages$ */ /* $OpenBSD: main.c,v 1.61 2003/04/21 23:14:06 millert Exp $ */ /* $NetBSD: main.c,v 1.34 1997/03/24 20:56:36 gwr 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. */ #include #include #include #ifndef MAKE_BOOTSTRAP #include #endif #include #include #include #include #include #include "config.h" #include "defines.h" #include "var.h" #include "parse.h" #include "parsevar.h" #include "dir.h" #include "error.h" #include "pathnames.h" #include "init.h" #include "job.h" #include "compat.h" #include "targ.h" #include "suff.h" #include "str.h" #include "main.h" #include "lst.h" #include "memory.h" #include "make.h" #ifndef PATH_MAX # ifdef MAXPATHLEN # define PATH_MAX (MAXPATHLEN+1) # else # define PATH_MAX 1024 # endif #endif #ifndef DEFMAXLOCAL #define DEFMAXLOCAL DEFMAXJOBS #endif /* DEFMAXLOCAL */ #define MAKEFLAGS ".MAKEFLAGS" static LIST to_create; /* Targets to be made */ Lst create = &to_create; GNode *DEFAULT; /* .DEFAULT node */ bool allPrecious; /* .PRECIOUS given on line by itself */ static bool noBuiltins; /* -r flag */ static LIST makefiles; /* ordered list of makefiles to read */ static LIST varstoprint; /* list of variables to print */ int maxJobs; /* -j argument */ static int maxLocal; /* -L argument */ bool compatMake; /* -B argument */ bool debug; /* -d flag */ bool noExecute; /* -n flag */ bool keepgoing; /* -k flag */ bool queryFlag; /* -q flag */ bool touchFlag; /* -t flag */ bool usePipes; /* !-P flag */ bool ignoreErrors; /* -i flag */ bool beSilent; /* -s flag */ bool oldVars; /* variable substitution style */ bool checkEnvFirst; /* -e flag */ static void MainParseArgs(int, char **); static char * chdir_verify_path(char *); static int ReadMakefile(void *, void *); static void add_dirpath(Lst, const char *); static void usage(void); static void posixParseOptLetter(int); static void record_option(int, const char *); static char *curdir; /* startup directory */ static char *objdir; /* where we chdir'ed to */ static void record_option(c, arg) int c; const char *arg; { char opt[3]; opt[0] = '-'; opt[1] = c; opt[2] = '\0'; Var_Append(MAKEFLAGS, opt, VAR_GLOBAL); if (arg != NULL) Var_Append(MAKEFLAGS, arg, VAR_GLOBAL); } static void posixParseOptLetter(c) int c; { switch(c) { case 'B': compatMake = true; return; /* XXX don't pass to submakes. */ case 'P': usePipes = false; break; case 'S': keepgoing = false; break; case 'e': checkEnvFirst = true; break; case 'i': ignoreErrors = true; break; case 'k': keepgoing = true; break; case 'n': noExecute = true; break; case 'q': queryFlag = true; /* Kind of nonsensical, wot? */ break; case 'r': noBuiltins = true; break; case 's': beSilent = true; break; case 't': touchFlag = true; break; default: case '?': usage(); } record_option(c, NULL); } /*- * 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(argc, argv) int argc; char **argv; { int c, optend; int forceJobs = 0; #define OPTFLAGS "BD:I:PSV:d:ef:ij:km:nqrst" #define OPTLETTERS "BPSiknqrst" optind = 1; /* since we're called more than once */ optreset = 1; optend = 0; while (optind < argc) { if (!optend && argv[optind][0] == '-') { if (argv[optind][1] == '\0') optind++; /* ignore "-" */ else if (argv[optind][1] == '-' && argv[optind][2] == '\0') { optind++; /* ignore "--" */ optend++; /* "--" denotes end of flags */ } } c = optend ? -1 : getopt(argc, argv, OPTFLAGS); switch (c) { case 'D': Var_Set(optarg, "1", VAR_GLOBAL); record_option(c, optarg); break; case 'I': Parse_AddIncludeDir(optarg); record_option(c, optarg); break; case 'V': Lst_AtEnd(&varstoprint, optarg); record_option(c, 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: (void)fprintf(stderr, "make: illegal argument to d option -- %c\n", *modules); usage(); } record_option(c, optarg); break; } case 'f': Lst_AtEnd(&makefiles, optarg); break; case 'j': { char *endptr; forceJobs = true; maxJobs = strtol(optarg, &endptr, 0); if (endptr == optarg) { fprintf(stderr, "make: illegal argument to -j option -- %s -- not a number\n", optarg); usage(); } maxJobs = atoi(optarg); maxLocal = maxJobs; record_option(c, optarg); break; } case 'm': Dir_AddDir(sysIncPath, optarg); record_option(c, optarg); break; case -1: /* Check for variable assignments and targets. */ if (argv[optind] != NULL && !Parse_DoVar(argv[optind], VAR_CMD)) { if (!*argv[optind]) Punt("illegal (null) argument."); Lst_AtEnd(create, estrdup(argv[optind])); } optind++; /* skip over non-option */ break; default: posixParseOptLetter(c); } } /* * Be compatible if user did not specify -j and did not explicitly * turn compatibility on */ if (!compatMake && !forceJobs) compatMake = true; oldVars = true; } /*- * 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(line) const 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; char *argv0; const char *s; size_t len; if (line == NULL) return; for (; *line == ' '; ++line) continue; if (!*line) return; /* POSIX rule: MAKEFLAGS can hold a set of option letters without * any blanks or dashes. */ for (s = line;; s++) { if (*s == '\0') { while (line != s) posixParseOptLetter(*line++); return; } if (strchr(OPTLETTERS, *s) == NULL) break; } argv0 = Var_Value(".MAKE"); len = strlen(line) + strlen(argv0) + 2; buf = emalloc(len); (void)snprintf(buf, len, "%s %s", argv0, line); argv = brk_string(buf, &argc, &args); free(buf); MainParseArgs(argc, argv); free(args); free(argv); } char * chdir_verify_path(path) char *path; { struct stat sb; 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 NULL; } else { if (path[0] != '/') return Str_concat(curdir, path, '/'); else return estrdup(path); } } return NULL; } /* Add a :-separated path to a Lst of directories. */ static void add_dirpath(l, n) Lst l; const char *n; { const char *start; const char *cp; for (start = n;;) { for (cp = start; *cp != '\0' && *cp != ':';) cp++; Dir_AddDiri(l, start, cp); if (*cp == '\0') break; else start= cp+1; } } int main(int, char **); /*- * 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; { static LIST targs; /* target nodes to create */ bool outOfDate = true; /* false if all targets up to date */ struct stat sb, sa; char *p, *path, *pathp, *pwd; char *mdpath; char *machine = getenv("MACHINE"); char *machine_arch = getenv("MACHINE_ARCH"); const char *syspath = _PATH_DEFSYSPATH; #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 ((curdir = dogetcwd()) == NULL) { (void)fprintf(stderr, "make: %s.\n", strerror(errno)); exit(2); } if (stat(curdir, &sa) == -1) { (void)fprintf(stderr, "make: %s: %s.\n", curdir, strerror(errno)); exit(2); } if ((pwd = getenv("PWD")) != NULL) { if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && sa.st_dev == sb.st_dev) { free(curdir); curdir = estrdup(pwd); } } /* * 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) { perror("make: uname"); exit(2); } machine = utsname.machine; #else machine = MACHINE; #endif } if (!machine_arch) { #ifndef MACHINE_ARCH machine_arch = "unknown"; /* XXX: no uname -p yet */ #else machine_arch = MACHINE_ARCH; #endif } /* * 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. */ mdpath = NULL; if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) { if (!(path = getenv("MAKEOBJDIR"))) { path = _PATH_OBJDIR; pathp = _PATH_OBJDIRPREFIX; mdpath = Str_concat(path, machine, '.'); if (!(objdir = chdir_verify_path(mdpath))) if (!(objdir=chdir_verify_path(path))) { free(mdpath); mdpath = Str_concat(pathp, curdir, 0); if (!(objdir=chdir_verify_path(mdpath))) objdir = curdir; } } else if (!(objdir = chdir_verify_path(path))) objdir = curdir; } else { mdpath = Str_concat(pathp, curdir, 0); if (!(objdir = chdir_verify_path(mdpath))) objdir = curdir; } free(mdpath); esetenv("PWD", objdir); unsetenv("CDPATH"); Static_Lst_Init(create); Static_Lst_Init(&makefiles); Static_Lst_Init(&varstoprint); Static_Lst_Init(&targs); beSilent = false; /* Print commands as executed */ ignoreErrors = false; /* Pay attention to non-zero returns */ noExecute = false; /* Execute all commands */ 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. */ maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ maxJobs = maxLocal; compatMake = false; /* No compat mode */ /* * Initialize all external modules. */ Init(); if (objdir != curdir) Dir_AddDir(dirSearchPath, curdir); Var_Set(".CURDIR", curdir, VAR_GLOBAL); Var_Set(".OBJDIR", objdir, VAR_GLOBAL); /* * 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); Var_Set(".MAKE", argv[0], VAR_GLOBAL); Var_Set(MAKEFLAGS, "", VAR_GLOBAL); Var_Set("MFLAGS", "", VAR_GLOBAL); Var_Set("MACHINE", machine, VAR_GLOBAL); Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); /* * First snag any flags out of the MAKEFLAGS environment variable. */ Main_ParseArgLine(getenv("MAKEFLAGS")); MainParseArgs(argc, argv); /* And set up everything for sub-makes */ Var_AddCmdline(MAKEFLAGS); DEFAULT = 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_Adv(ln)) { char *name = (char *)Lst_Datum(ln); Var_Append(".TARGETS", name, VAR_GLOBAL); } } else Var_Set(".TARGETS", "", 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 (Lst_IsEmpty(sysIncPath)) add_dirpath(sysIncPath, syspath); /* * Read in the built-in rules first, followed by the specified * makefile(s), or the default BSDmakefile, Makefile or * makefile, in that order. */ if (!noBuiltins) { LstNode ln; LIST sysMkPath; /* Path of sys.mk */ Lst_Init(&sysMkPath); Dir_Expand(_PATH_DEFSYSMK, sysIncPath, &sysMkPath); if (Lst_IsEmpty(&sysMkPath)) Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); ln = Lst_Find(&sysMkPath, ReadMakefile, NULL); if (ln != NULL) Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); #ifdef CLEANUP Lst_Destroy(&sysMkPath, (SimpleProc)free); #endif } if (!Lst_IsEmpty(&makefiles)) { LstNode ln; ln = Lst_Find(&makefiles, ReadMakefile, NULL); if (ln != NULL) Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); } else if (!ReadMakefile("BSDmakefile", NULL)) if (!ReadMakefile("makefile", NULL)) (void)ReadMakefile("Makefile", NULL); /* Always read a .depend file, if it exists. */ (void)ReadMakefile(".depend", NULL); Var_Append("MFLAGS", Var_Value(MAKEFLAGS), VAR_GLOBAL); /* Install all the flags into the MAKEFLAGS env variable. */ if (((p = Var_Value(MAKEFLAGS)) != NULL) && *p) esetenv("MAKEFLAGS", p); /* * 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_Value("VPATH") != NULL) { char *vpath; vpath = Var_Subst("${VPATH}", NULL, false); add_dirpath(dirSearchPath, vpath); (void)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(); /* 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(&varstoprint)) { LstNode ln; for (ln = Lst_First(&varstoprint); ln != NULL; ln = Lst_Adv(ln)) { char *value = Var_Value((char *)Lst_Datum(ln)); printf("%s\n", value ? value : ""); } } 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)) Parse_MainName(&targs); else Targ_FindList(&targs, create); if (compatMake) /* Compat_Init will take care of creating all the targets as * well as initializing the module. */ Compat_Run(&targs); 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) { if (maxLocal == -1) maxLocal = maxJobs; Job_Init(maxJobs, maxLocal); } /* Traverse the graph, checking on all the targets. */ outOfDate = Make_Run(&targs); } } #ifdef CLEANUP Lst_Destroy(&targs, NOFREE); Lst_Destroy(&varstoprint, NOFREE); Lst_Destroy(&makefiles, NOFREE); Lst_Destroy(create, (SimpleProc)free); #endif /* print the graph now it's been processed if the user requested it */ if (DEBUG(GRAPH2)) Targ_PrintGraph(2); #ifdef CLEANUP if (objdir != curdir) free(objdir); free(curdir); #endif 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 bool ReadMakefile(p, q) void * p; void * q UNUSED; { char *fname = p; /* makefile to read */ FILE *stream; char *name; if (!strcmp(fname, "-")) { Var_Set("MAKEFILE", "", VAR_GLOBAL); Parse_File(estrdup("(stdin)"), stdin); } else { if ((stream = fopen(fname, "r")) != NULL) goto found; /* if we've chdir'd, rebuild the path name */ if (curdir != objdir && *fname != '/') { char *path; path = Str_concat(curdir, fname, '/'); if ((stream = fopen(path, "r")) == NULL) free(path); else { fname = path; 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"))) 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: Var_Set("MAKEFILE", fname, VAR_GLOBAL); Parse_File(fname, stream); } return true; } /* * usage -- * exit with usage message */ static void usage() { (void)fprintf(stderr, "usage: make [-Beiknqrst] [-D variable] [-d flags] [-f makefile ]\n\ [-I directory] [-j max_jobs] [-m directory] [-V variable]\n\ [variable=value] [target ...]\n"); exit(2); }