main.c revision 75973
1189251Ssam/* 2189251Ssam * Copyright (c) 1988, 1989, 1990, 1993 3189251Ssam * The Regents of the University of California. All rights reserved. 4189251Ssam * Copyright (c) 1989 by Berkeley Softworks 5189251Ssam * All rights reserved. 6189251Ssam * 7189251Ssam * This code is derived from software contributed to Berkeley by 8189251Ssam * Adam de Boor. 9189251Ssam * 10189251Ssam * Redistribution and use in source and binary forms, with or without 11189251Ssam * modification, are permitted provided that the following conditions 12189251Ssam * are met: 13189251Ssam * 1. Redistributions of source code must retain the above copyright 14189251Ssam * notice, this list of conditions and the following disclaimer. 15189251Ssam * 2. Redistributions in binary form must reproduce the above copyright 16189251Ssam * notice, this list of conditions and the following disclaimer in the 17189251Ssam * documentation and/or other materials provided with the distribution. 18189251Ssam * 3. All advertising materials mentioning features or use of this software 19189251Ssam * must display the following acknowledgement: 20189251Ssam * This product includes software developed by the University of 21189251Ssam * California, Berkeley and its contributors. 22189251Ssam * 4. Neither the name of the University nor the names of its contributors 23189251Ssam * may be used to endorse or promote products derived from this software 24189251Ssam * without specific prior written permission. 25189251Ssam * 26189251Ssam * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27189251Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28189251Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29189251Ssam * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30189251Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31189251Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32189251Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33189251Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34189251Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35189251Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36189251Ssam * SUCH DAMAGE. 37189251Ssam * 38189251Ssam * @(#)main.c 8.3 (Berkeley) 3/19/94 39189251Ssam */ 40189251Ssam 41189251Ssam#ifndef lint 42189251Ssam#include <sys/cdefs.h> 43189251Ssam__COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 The Regents of the University of California. All rights reserved."); 44189251Ssam__RCSID("$FreeBSD: head/usr.bin/make/main.c 75973 2001-04-25 14:22:38Z ru $"); 45189251Ssam#endif /* not lint */ 46189251Ssam 47189251Ssam/*- 48189251Ssam * main.c -- 49189251Ssam * The main file for this entire program. Exit routines etc 50189251Ssam * reside here. 51189251Ssam * 52189251Ssam * Utility functions defined in this file: 53189251Ssam * Main_ParseArgLine Takes a line of arguments, breaks them and 54189251Ssam * treats them as if they were given when first 55189251Ssam * invoked. Used by the parse module to implement 56189251Ssam * the .MFLAGS target. 57189251Ssam * 58189251Ssam * Error Print a tagged error message. The global 59189251Ssam * MAKE variable must have been defined. This 60189251Ssam * takes a format string and two optional 61189251Ssam * arguments for it. 62189251Ssam * 63189251Ssam * Fatal Print an error message and exit. Also takes 64189251Ssam * a format string and two arguments. 65189251Ssam * 66189251Ssam * Punt Aborts all jobs and exits with a message. Also 67189251Ssam * takes a format string and two arguments. 68189251Ssam * 69189251Ssam * Finish Finish things up by printing the number of 70189251Ssam * errors which occured, as passed to it, and 71189251Ssam * exiting. 72189251Ssam */ 73189251Ssam 74189251Ssam#include <sys/types.h> 75189251Ssam#include <sys/time.h> 76189251Ssam#include <sys/param.h> 77189251Ssam#include <sys/resource.h> 78189251Ssam#include <sys/signal.h> 79189251Ssam#include <sys/stat.h> 80189251Ssam#if defined(__i386__) 81189251Ssam#include <sys/sysctl.h> 82189251Ssam#endif 83189251Ssam#ifndef MACHINE 84189251Ssam#include <sys/utsname.h> 85189251Ssam#endif 86189251Ssam#include <sys/wait.h> 87189251Ssam#include <err.h> 88189251Ssam#include <stdlib.h> 89189251Ssam#include <errno.h> 90189251Ssam#include <fcntl.h> 91189251Ssam#include <stdio.h> 92189251Ssam#include <sysexits.h> 93189251Ssam#ifdef __STDC__ 94189251Ssam#include <stdarg.h> 95189251Ssam#else 96189251Ssam#include <varargs.h> 97189251Ssam#endif 98189251Ssam#include <unistd.h> 99189251Ssam#include "make.h" 100189251Ssam#include "hash.h" 101189251Ssam#include "dir.h" 102189251Ssam#include "job.h" 103189251Ssam#include "pathnames.h" 104189251Ssam 105189251Ssam#ifndef DEFMAXLOCAL 106189251Ssam#define DEFMAXLOCAL DEFMAXJOBS 107189251Ssam#endif /* DEFMAXLOCAL */ 108189251Ssam 109189251Ssam#define MAKEFLAGS ".MAKEFLAGS" 110189251Ssam 111189251SsamLst create; /* Targets to be made */ 112189251Ssamtime_t now; /* Time at start of make */ 113189251SsamGNode *DEFAULT; /* .DEFAULT node */ 114189251SsamBoolean allPrecious; /* .PRECIOUS given on line by itself */ 115189251Ssam 116189251Ssamstatic Boolean noBuiltins; /* -r flag */ 117189251Ssamstatic Lst makefiles; /* ordered list of makefiles to read */ 118189251Ssamstatic Boolean printVars; /* print value of one or more vars */ 119189251Ssamstatic Boolean expandVars; /* fully expand printed variables */ 120189251Ssamstatic Lst variables; /* list of variables to print */ 121189251Ssamint maxJobs; /* -j argument */ 122189251Ssamstatic Boolean forceJobs; /* -j argument given */ 123189251Ssamstatic int maxLocal; /* -L argument */ 124189251SsamBoolean compatMake; /* -B argument */ 125189251SsamBoolean debug; /* -d flag */ 126189251SsamBoolean noExecute; /* -n flag */ 127189251SsamBoolean keepgoing; /* -k flag */ 128189251SsamBoolean queryFlag; /* -q flag */ 129189251SsamBoolean touchFlag; /* -t flag */ 130189251SsamBoolean usePipes; /* !-P flag */ 131189251SsamBoolean ignoreErrors; /* -i flag */ 132189251SsamBoolean beSilent; /* -s flag */ 133189251SsamBoolean beVerbose; /* -v flag */ 134209158SrpauloBoolean oldVars; /* variable substitution style */ 135189251SsamBoolean checkEnvFirst; /* -e flag */ 136189251SsamLst envFirstVars; /* (-E) vars to override from env */ 137189251Ssamstatic Boolean jobsRunning; /* TRUE if the jobs might be running */ 138189251Ssam 139189251Ssamstatic void MainParseArgs __P((int, char **)); 140189251Ssamchar * chdir_verify_path __P((char *, char *)); 141189251Ssamstatic int ReadMakefile __P((void *, void *)); 142189251Ssamstatic void usage __P((void)); 143189251Ssam 144189251Ssamstatic char *curdir; /* startup directory */ 145189251Ssamstatic char *objdir; /* where we chdir'ed to */ 146189251Ssam 147189251Ssam/*- 148189251Ssam * MainParseArgs -- 149189251Ssam * Parse a given argument vector. Called from main() and from 150189251Ssam * Main_ParseArgLine() when the .MAKEFLAGS target is used. 151189251Ssam * 152189251Ssam * XXX: Deal with command line overriding .MAKEFLAGS in makefile 153189251Ssam * 154189251Ssam * Results: 155189251Ssam * None 156189251Ssam * 157189251Ssam * Side Effects: 158189251Ssam * Various global and local flags will be set depending on the flags 159189251Ssam * given 160189251Ssam */ 161189251Ssamstatic void 162189251SsamMainParseArgs(argc, argv) 163189251Ssam int argc; 164189251Ssam char **argv; 165189251Ssam{ 166189251Ssam char *p; 167189251Ssam int c; 168189251Ssam 169189251Ssam optind = 1; /* since we're called more than once */ 170189251Ssam#ifdef REMOTE 171189251Ssam# define OPTFLAGS "BD:E:I:L:PSV:Xd:ef:ij:km:nqrstv" 172189251Ssam#else 173189251Ssam# define OPTFLAGS "BD:E:I:PSV:Xd:ef:ij:km:nqrstv" 174189251Ssam#endif 175189251Ssamrearg: while((c = getopt(argc, argv, OPTFLAGS)) != -1) { 176189251Ssam switch(c) { 177189251Ssam case 'D': 178189251Ssam Var_Set(optarg, "1", VAR_GLOBAL); 179189251Ssam Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 180189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 181189251Ssam break; 182189251Ssam case 'I': 183189251Ssam Parse_AddIncludeDir(optarg); 184189251Ssam Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 185189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 186189251Ssam break; 187189251Ssam case 'V': 188189251Ssam printVars = TRUE; 189189251Ssam (void)Lst_AtEnd(variables, (void *)optarg); 190189251Ssam Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 191189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 192189251Ssam break; 193189251Ssam case 'X': 194189251Ssam expandVars = FALSE; 195189251Ssam break; 196189251Ssam case 'B': 197189251Ssam compatMake = TRUE; 198189251Ssam Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 199189251Ssam break; 200189251Ssam#ifdef REMOTE 201189251Ssam case 'L': { 202189251Ssam char *endptr; 203189251Ssam 204189251Ssam maxLocal = strtol(optarg, &endptr, 10); 205189251Ssam if (maxLocal < 0 || *endptr != '\0') { 206189251Ssam warnx("illegal number, -L argument -- %s", 207189251Ssam optarg); 208189251Ssam usage(); 209189251Ssam } 210189251Ssam Var_Append(MAKEFLAGS, "-L", VAR_GLOBAL); 211189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 212189251Ssam break; 213189251Ssam } 214189251Ssam#endif 215189251Ssam case 'P': 216189251Ssam usePipes = FALSE; 217189251Ssam Var_Append(MAKEFLAGS, "-P", VAR_GLOBAL); 218189251Ssam break; 219189251Ssam case 'S': 220189251Ssam keepgoing = FALSE; 221189251Ssam Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 222189251Ssam break; 223189251Ssam case 'd': { 224189251Ssam char *modules = optarg; 225189251Ssam 226189251Ssam for (; *modules; ++modules) 227189251Ssam switch (*modules) { 228189251Ssam case 'A': 229189251Ssam debug = ~0; 230189251Ssam break; 231189251Ssam case 'a': 232189251Ssam debug |= DEBUG_ARCH; 233189251Ssam break; 234189251Ssam case 'c': 235189251Ssam debug |= DEBUG_COND; 236189251Ssam break; 237189251Ssam case 'd': 238189251Ssam debug |= DEBUG_DIR; 239189251Ssam break; 240189251Ssam case 'f': 241189251Ssam debug |= DEBUG_FOR; 242189251Ssam break; 243189251Ssam case 'g': 244189251Ssam if (modules[1] == '1') { 245189251Ssam debug |= DEBUG_GRAPH1; 246189251Ssam ++modules; 247189251Ssam } 248189251Ssam else if (modules[1] == '2') { 249189251Ssam debug |= DEBUG_GRAPH2; 250189251Ssam ++modules; 251189251Ssam } 252189251Ssam break; 253189251Ssam case 'j': 254189251Ssam debug |= DEBUG_JOB; 255189251Ssam break; 256189251Ssam case 'l': 257189251Ssam debug |= DEBUG_LOUD; 258189251Ssam break; 259189251Ssam case 'm': 260189251Ssam debug |= DEBUG_MAKE; 261189251Ssam break; 262189251Ssam case 's': 263189251Ssam debug |= DEBUG_SUFF; 264189251Ssam break; 265189251Ssam case 't': 266189251Ssam debug |= DEBUG_TARG; 267189251Ssam break; 268189251Ssam case 'v': 269189251Ssam debug |= DEBUG_VAR; 270189251Ssam break; 271189251Ssam default: 272189251Ssam warnx("illegal argument to d option -- %c", *modules); 273189251Ssam usage(); 274189251Ssam } 275189251Ssam Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 276189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 277189251Ssam break; 278189251Ssam } 279189251Ssam case 'E': 280189251Ssam p = malloc(strlen(optarg) + 1); 281189251Ssam if (!p) 282189251Ssam Punt("make: cannot allocate memory."); 283189251Ssam (void)strcpy(p, optarg); 284189251Ssam (void)Lst_AtEnd(envFirstVars, (void *)p); 285189251Ssam Var_Append(MAKEFLAGS, "-E", VAR_GLOBAL); 286189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 287189251Ssam break; 288189251Ssam case 'e': 289189251Ssam checkEnvFirst = TRUE; 290189251Ssam Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 291189251Ssam break; 292189251Ssam case 'f': 293189251Ssam (void)Lst_AtEnd(makefiles, (void *)optarg); 294189251Ssam break; 295189251Ssam case 'i': 296189251Ssam ignoreErrors = TRUE; 297189251Ssam Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 298189251Ssam break; 299189251Ssam case 'j': { 300189251Ssam char *endptr; 301189251Ssam 302189251Ssam forceJobs = TRUE; 303189251Ssam maxJobs = strtol(optarg, &endptr, 10); 304189251Ssam if (maxJobs <= 0 || *endptr != '\0') { 305189251Ssam warnx("illegal number, -j argument -- %s", 306189251Ssam optarg); 307189251Ssam usage(); 308189251Ssam } 309189251Ssam#ifndef REMOTE 310189251Ssam maxLocal = maxJobs; 311189251Ssam#endif 312189251Ssam Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 313189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 314189251Ssam break; 315189251Ssam } 316189251Ssam case 'k': 317189251Ssam keepgoing = TRUE; 318189251Ssam Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 319189251Ssam break; 320189251Ssam case 'm': 321189251Ssam Dir_AddDir(sysIncPath, optarg); 322189251Ssam Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 323189251Ssam Var_Append(MAKEFLAGS, optarg, VAR_GLOBAL); 324189251Ssam break; 325189251Ssam case 'n': 326189251Ssam noExecute = TRUE; 327189251Ssam Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 328189251Ssam break; 329189251Ssam case 'q': 330189251Ssam queryFlag = TRUE; 331189251Ssam /* Kind of nonsensical, wot? */ 332189251Ssam Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 333189251Ssam break; 334189251Ssam case 'r': 335189251Ssam noBuiltins = TRUE; 336189251Ssam Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 337189251Ssam break; 338189251Ssam case 's': 339189251Ssam beSilent = TRUE; 340189251Ssam Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 341189251Ssam break; 342189251Ssam case 't': 343189251Ssam touchFlag = TRUE; 344189251Ssam Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 345189251Ssam break; 346189251Ssam case 'v': 347189251Ssam beVerbose = TRUE; 348189251Ssam Var_Append(MAKEFLAGS, "-v", VAR_GLOBAL); 349189251Ssam break; 350189251Ssam default: 351189251Ssam case '?': 352189251Ssam usage(); 353189251Ssam } 354189251Ssam } 355189251Ssam 356189251Ssam oldVars = TRUE; 357189251Ssam 358189251Ssam /* 359189251Ssam * See if the rest of the arguments are variable assignments and 360189251Ssam * perform them if so. Else take them to be targets and stuff them 361189251Ssam * on the end of the "create" list. 362189251Ssam */ 363189251Ssam for (argv += optind, argc -= optind; *argv; ++argv, --argc) 364189251Ssam if (Parse_IsVar(*argv)) 365189251Ssam Parse_DoVar(*argv, VAR_CMD); 366189251Ssam else { 367189251Ssam if (!**argv) 368189251Ssam Punt("illegal (null) argument."); 369189251Ssam if (**argv == '-') { 370189251Ssam if ((*argv)[1]) 371189251Ssam optind = 0; /* -flag... */ 372189251Ssam else 373189251Ssam optind = 1; /* - */ 374189251Ssam goto rearg; 375189251Ssam } 376189251Ssam (void)Lst_AtEnd(create, (void *)estrdup(*argv)); 377189251Ssam } 378189251Ssam} 379189251Ssam 380189251Ssam/*- 381189251Ssam * Main_ParseArgLine -- 382189251Ssam * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 383189251Ssam * is encountered and by main() when reading the .MAKEFLAGS envariable. 384189251Ssam * Takes a line of arguments and breaks it into its 385189251Ssam * component words and passes those words and the number of them to the 386189251Ssam * MainParseArgs function. 387189251Ssam * The line should have all its leading whitespace removed. 388189251Ssam * 389189251Ssam * Results: 390189251Ssam * None 391189251Ssam * 392189251Ssam * Side Effects: 393189251Ssam * Only those that come from the various arguments. 394189251Ssam */ 395189251Ssamvoid 396189251SsamMain_ParseArgLine(line) 397189251Ssam char *line; /* Line to fracture */ 398189251Ssam{ 399189251Ssam char **argv; /* Manufactured argument vector */ 400189251Ssam int argc; /* Number of arguments in argv */ 401189251Ssam 402189251Ssam if (line == NULL) 403189251Ssam return; 404189251Ssam for (; *line == ' '; ++line) 405189251Ssam continue; 406189251Ssam if (!*line) 407189251Ssam return; 408189251Ssam 409189251Ssam argv = brk_string(line, &argc, TRUE); 410189251Ssam MainParseArgs(argc, argv); 411189251Ssam} 412189251Ssam 413189251Ssamchar * 414189251Ssamchdir_verify_path(path, obpath) 415189251Ssam char *path; 416189251Ssam char *obpath; 417189251Ssam{ 418189251Ssam struct stat sb; 419189251Ssam 420189251Ssam if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 421189251Ssam if (chdir(path) == -1 || getcwd(obpath, MAXPATHLEN) == NULL) { 422189251Ssam warn("warning: %s", path); 423189251Ssam return 0; 424189251Ssam } 425189251Ssam return obpath; 426189251Ssam } 427189251Ssam 428189251Ssam return 0; 429189251Ssam} 430189251Ssam 431189251Ssam 432189251Ssam/*- 433189251Ssam * main -- 434189251Ssam * The main function, for obvious reasons. Initializes variables 435189251Ssam * and a few modules, then parses the arguments give it in the 436189251Ssam * environment and on the command line. Reads the system makefile 437189251Ssam * followed by either Makefile, makefile or the file given by the 438189251Ssam * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 439189251Ssam * flags it has received by then uses either the Make or the Compat 440189251Ssam * module to create the initial list of targets. 441189251Ssam * 442189251Ssam * Results: 443189251Ssam * If -q was given, exits -1 if anything was out-of-date. Else it exits 444189251Ssam * 0. 445189251Ssam * 446189251Ssam * Side Effects: 447189251Ssam * The program exits when done. Targets are created. etc. etc. etc. 448189251Ssam */ 449189251Ssamint 450189251Ssammain(argc, argv) 451189251Ssam int argc; 452189251Ssam char **argv; 453189251Ssam{ 454189251Ssam Lst targs; /* target nodes to create -- passed to Make_Init */ 455189251Ssam Boolean outOfDate = TRUE; /* FALSE if all targets up to date */ 456189251Ssam struct stat sa; 457189251Ssam char *p, *p1, *path, *pathp; 458189251Ssam#ifdef WANT_ENV_PWD 459189251Ssam struct stat sb; 460189251Ssam char *pwd; 461189251Ssam#endif 462189251Ssam char mdpath[MAXPATHLEN]; 463189251Ssam char obpath[MAXPATHLEN]; 464189251Ssam char cdpath[MAXPATHLEN]; 465189251Ssam char *machine = getenv("MACHINE"); 466189251Ssam char *machine_arch = getenv("MACHINE_ARCH"); 467189251Ssam char *machine_cpu = getenv("MACHINE_CPU"); 468189251Ssam Lst sysMkPath; /* Path of sys.mk */ 469189251Ssam char *cp = NULL, *start; 470189251Ssam /* avoid faults on read-only strings */ 471189251Ssam static char syspath[] = _PATH_DEFSYSPATH; 472189251Ssam 473189251Ssam#if DEFSHELL == 2 474189251Ssam /* 475189251Ssam * Turn off ENV to make ksh happier. 476189251Ssam */ 477189251Ssam unsetenv("ENV"); 478189251Ssam#endif 479189251Ssam 480189251Ssam#ifdef RLIMIT_NOFILE 481189251Ssam /* 482189251Ssam * get rid of resource limit on file descriptors 483189251Ssam */ 484189251Ssam { 485189251Ssam struct rlimit rl; 486189251Ssam if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 487189251Ssam rl.rlim_cur != rl.rlim_max) { 488189251Ssam rl.rlim_cur = rl.rlim_max; 489189251Ssam (void) setrlimit(RLIMIT_NOFILE, &rl); 490189251Ssam } 491189251Ssam } 492189251Ssam#endif 493189251Ssam /* 494189251Ssam * Find where we are and take care of PWD for the automounter... 495189251Ssam * All this code is so that we know where we are when we start up 496189251Ssam * on a different machine with pmake. 497189251Ssam */ 498189251Ssam curdir = cdpath; 499189251Ssam if (getcwd(curdir, MAXPATHLEN) == NULL) 500189251Ssam err(2, NULL); 501189251Ssam 502189251Ssam if (stat(curdir, &sa) == -1) 503189251Ssam err(2, "%s", curdir); 504189251Ssam 505189251Ssam#ifdef WANT_ENV_PWD 506189251Ssam if ((pwd = getenv("PWD")) != NULL) { 507189251Ssam if (stat(pwd, &sb) == 0 && sa.st_ino == sb.st_ino && 508189251Ssam sa.st_dev == sb.st_dev) 509189251Ssam (void) strcpy(curdir, pwd); 510189251Ssam } 511189251Ssam#endif 512189251Ssam 513189251Ssam#if defined(__i386__) && defined(__FreeBSD_version) && \ 514189251Ssam __FreeBSD_version > 300003 515189251Ssam /* 516189251Ssam * PC-98 kernel sets the `i386' string to the utsname.machine and 517189251Ssam * it cannot be distinguished from IBM-PC by uname(3). Therefore, 518189251Ssam * we check machine.ispc98 and adjust the machine variable before 519189251Ssam * using usname(3) below. 520189251Ssam * NOTE: machdep.ispc98 was defined on 1998/8/31. At that time, 521189251Ssam * __FreeBSD_version was defined as 300003. So, this check can 522189251Ssam * safely be done with any kernel with version > 300003. 523189251Ssam */ 524189251Ssam if (!machine) { 525189251Ssam int ispc98; 526189251Ssam size_t len; 527189251Ssam 528189251Ssam len = sizeof(ispc98); 529189251Ssam if (!sysctlbyname("machdep.ispc98", &ispc98, &len, NULL, 0)) { 530189251Ssam if (ispc98) 531189251Ssam machine = "pc98"; 532189251Ssam } 533189251Ssam } 534189251Ssam#endif 535189251Ssam 536189251Ssam /* 537189251Ssam * Get the name of this type of MACHINE from utsname 538189251Ssam * so we can share an executable for similar machines. 539189251Ssam * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 540189251Ssam * 541189251Ssam * Note that while MACHINE is decided at run-time, 542189251Ssam * MACHINE_ARCH is always known at compile time. 543189251Ssam */ 544189251Ssam if (!machine) { 545189251Ssam#ifndef MACHINE 546189251Ssam struct utsname utsname; 547189251Ssam 548189251Ssam if (uname(&utsname) == -1) { 549189251Ssam perror("make: uname"); 550189251Ssam exit(2); 551189251Ssam } 552189251Ssam machine = utsname.machine; 553189251Ssam#else 554189251Ssam machine = MACHINE; 555189251Ssam#endif 556189251Ssam } 557189251Ssam 558189251Ssam if (!machine_arch) { 559189251Ssam#ifndef MACHINE_ARCH 560189251Ssam machine_arch = "unknown"; 561189251Ssam#else 562189251Ssam machine_arch = MACHINE_ARCH; 563189251Ssam#endif 564189251Ssam } 565189251Ssam 566189251Ssam /* 567189251Ssam * Set machine_cpu to the minumum supported CPU revision based 568189251Ssam * on the target architecture, if not already set. 569189251Ssam */ 570189251Ssam if (!machine_cpu) { 571189251Ssam if (!strcmp(machine_arch, "i386")) 572189251Ssam machine_cpu = "i386"; 573189251Ssam else if (!strcmp(machine_arch, "alpha")) 574189251Ssam machine_cpu = "ev4"; 575189251Ssam else 576189251Ssam machine_cpu = "unknown"; 577189251Ssam } 578189251Ssam 579189251Ssam /* 580189251Ssam * The object directory location is determined using the 581189251Ssam * following order of preference: 582189251Ssam * 583189251Ssam * 1. MAKEOBJDIRPREFIX`cwd` 584189251Ssam * 2. MAKEOBJDIR 585189251Ssam * 3. _PATH_OBJDIR.${MACHINE} 586189251Ssam * 4. _PATH_OBJDIR 587189251Ssam * 5. _PATH_OBJDIRPREFIX`cwd` 588189251Ssam * 589189251Ssam * If one of the first two fails, use the current directory. 590189251Ssam * If the remaining three all fail, use the current directory. 591189251Ssam * 592189251Ssam * Once things are initted, 593189251Ssam * have to add the original directory to the search path, 594189251Ssam * and modify the paths for the Makefiles apropriately. The 595189251Ssam * current directory is also placed as a variable for make scripts. 596189251Ssam */ 597189251Ssam if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) { 598189251Ssam if (!(path = getenv("MAKEOBJDIR"))) { 599189251Ssam path = _PATH_OBJDIR; 600189251Ssam pathp = _PATH_OBJDIRPREFIX; 601189251Ssam (void) snprintf(mdpath, MAXPATHLEN, "%s.%s", 602189251Ssam path, machine); 603189251Ssam if (!(objdir = chdir_verify_path(mdpath, obpath))) 604189251Ssam if (!(objdir=chdir_verify_path(path, obpath))) { 605189251Ssam (void) snprintf(mdpath, MAXPATHLEN, 606189251Ssam "%s%s", pathp, curdir); 607189251Ssam if (!(objdir=chdir_verify_path(mdpath, 608189251Ssam obpath))) 609189251Ssam objdir = curdir; 610189251Ssam } 611189251Ssam } 612189251Ssam else if (!(objdir = chdir_verify_path(path, obpath))) 613189251Ssam objdir = curdir; 614189251Ssam } 615189251Ssam else { 616189251Ssam (void) snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir); 617189251Ssam if (!(objdir = chdir_verify_path(mdpath, obpath))) 618189251Ssam objdir = curdir; 619189251Ssam } 620189251Ssam 621189251Ssam#ifdef WANT_ENV_PWD 622189251Ssam setenv("PWD", objdir, 1); 623189251Ssam#endif 624189251Ssam 625189251Ssam create = Lst_Init(FALSE); 626189251Ssam makefiles = Lst_Init(FALSE); 627189251Ssam envFirstVars = Lst_Init(FALSE); 628189251Ssam printVars = FALSE; 629189251Ssam expandVars = TRUE; 630189251Ssam variables = Lst_Init(FALSE); 631189251Ssam beSilent = FALSE; /* Print commands as executed */ 632189251Ssam ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 633189251Ssam noExecute = FALSE; /* Execute all commands */ 634189251Ssam keepgoing = FALSE; /* Stop on error */ 635189251Ssam allPrecious = FALSE; /* Remove targets when interrupted */ 636189251Ssam queryFlag = FALSE; /* This is not just a check-run */ 637189251Ssam noBuiltins = FALSE; /* Read the built-in rules */ 638189251Ssam touchFlag = FALSE; /* Actually update targets */ 639189251Ssam usePipes = TRUE; /* Catch child output in pipes */ 640189251Ssam debug = 0; /* No debug verbosity, please. */ 641189251Ssam jobsRunning = FALSE; 642189251Ssam 643189251Ssam maxLocal = DEFMAXLOCAL; /* Set default local max concurrency */ 644189251Ssam#ifdef REMOTE 645189251Ssam maxJobs = DEFMAXJOBS; /* Set default max concurrency */ 646189251Ssam#else 647189251Ssam maxJobs = maxLocal; 648189251Ssam#endif 649189251Ssam forceJobs = FALSE; /* No -j flag */ 650189251Ssam compatMake = FALSE; /* No compat mode */ 651189251Ssam 652189251Ssam 653189251Ssam /* 654189251Ssam * Initialize the parsing, directory and variable modules to prepare 655189251Ssam * for the reading of inclusion paths and variable settings on the 656189251Ssam * command line 657189251Ssam */ 658189251Ssam Dir_Init(); /* Initialize directory structures so -I flags 659189251Ssam * can be processed correctly */ 660189251Ssam Parse_Init(); /* Need to initialize the paths of #include 661189251Ssam * directories */ 662189251Ssam Var_Init(); /* As well as the lists of variables for 663189251Ssam * parsing arguments */ 664189251Ssam str_init(); 665189251Ssam if (objdir != curdir) 666189251Ssam Dir_AddDir(dirSearchPath, curdir); 667189251Ssam Var_Set(".CURDIR", curdir, VAR_GLOBAL); 668189251Ssam Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 669189251Ssam 670189251Ssam /* 671189251Ssam * Initialize various variables. 672189251Ssam * MAKE also gets this name, for compatibility 673189251Ssam * .MAKEFLAGS gets set to the empty string just in case. 674189251Ssam * MFLAGS also gets initialized empty, for compatibility. 675189251Ssam */ 676189251Ssam Var_Set("MAKE", argv[0], VAR_GLOBAL); 677189251Ssam Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 678189251Ssam Var_Set("MFLAGS", "", VAR_GLOBAL); 679189251Ssam Var_Set("MACHINE", machine, VAR_GLOBAL); 680189251Ssam Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 681189251Ssam Var_Set("MACHINE_CPU", machine_cpu, VAR_GLOBAL); 682189251Ssam 683189251Ssam /* 684189251Ssam * First snag any flags out of the MAKE environment variable. 685189251Ssam * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 686189251Ssam * in a different format). 687189251Ssam */ 688189251Ssam#ifdef POSIX 689189251Ssam Main_ParseArgLine(getenv("MAKEFLAGS")); 690189251Ssam#else 691189251Ssam Main_ParseArgLine(getenv("MAKE")); 692189251Ssam#endif 693189251Ssam 694189251Ssam MainParseArgs(argc, argv); 695189251Ssam 696189251Ssam /* 697189251Ssam * Be compatible if user did not specify -j and did not explicitly 698189251Ssam * turned compatibility on 699189251Ssam */ 700189251Ssam if (!compatMake && !forceJobs) 701189251Ssam compatMake = TRUE; 702189251Ssam 703189251Ssam /* 704189251Ssam * Initialize archive, target and suffix modules in preparation for 705209158Srpaulo * parsing the makefile(s) 706189251Ssam */ 707189251Ssam Arch_Init(); 708189251Ssam Targ_Init(); 709189251Ssam Suff_Init(); 710189251Ssam 711189251Ssam DEFAULT = NULL; 712189251Ssam (void)time(&now); 713189251Ssam 714189251Ssam /* 715189251Ssam * Set up the .TARGETS variable to contain the list of targets to be 716189251Ssam * created. If none specified, make the variable empty -- the parser 717189251Ssam * will fill the thing in with the default or .MAIN target. 718189251Ssam */ 719189251Ssam if (!Lst_IsEmpty(create)) { 720189251Ssam LstNode ln; 721189251Ssam 722189251Ssam for (ln = Lst_First(create); ln != NULL; 723189251Ssam ln = Lst_Succ(ln)) { 724189251Ssam char *name = (char *)Lst_Datum(ln); 725189251Ssam 726189251Ssam Var_Append(".TARGETS", name, VAR_GLOBAL); 727189251Ssam } 728189251Ssam } else 729189251Ssam Var_Set(".TARGETS", "", VAR_GLOBAL); 730189251Ssam 731189251Ssam 732189251Ssam /* 733189251Ssam * If no user-supplied system path was given (through the -m option) 734189251Ssam * add the directories from the DEFSYSPATH (more than one may be given 735189251Ssam * as dir1:...:dirn) to the system include path. 736189251Ssam */ 737189251Ssam if (Lst_IsEmpty(sysIncPath)) { 738189251Ssam for (start = syspath; *start != '\0'; start = cp) { 739189251Ssam for (cp = start; *cp != '\0' && *cp != ':'; cp++) 740189251Ssam continue; 741189251Ssam if (*cp == '\0') { 742189251Ssam Dir_AddDir(sysIncPath, start); 743189251Ssam } else { 744189251Ssam *cp++ = '\0'; 745189251Ssam Dir_AddDir(sysIncPath, start); 746189251Ssam } 747189251Ssam } 748189251Ssam } 749189251Ssam 750189251Ssam /* 751189251Ssam * Read in the built-in rules first, followed by the specified 752189251Ssam * makefile, if it was (makefile != (char *) NULL), or the default 753189251Ssam * Makefile and makefile, in that order, if it wasn't. 754189251Ssam */ 755189251Ssam if (!noBuiltins) { 756189251Ssam LstNode ln; 757189251Ssam 758189251Ssam sysMkPath = Lst_Init (FALSE); 759189251Ssam Dir_Expand (_PATH_DEFSYSMK, sysIncPath, sysMkPath); 760189251Ssam if (Lst_IsEmpty(sysMkPath)) 761189251Ssam Fatal("make: no system rules (%s).", _PATH_DEFSYSMK); 762189251Ssam ln = Lst_Find(sysMkPath, (void *)NULL, ReadMakefile); 763189251Ssam if (ln != NULL) 764189251Ssam Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 765189251Ssam } 766189251Ssam 767189251Ssam if (!Lst_IsEmpty(makefiles)) { 768189251Ssam LstNode ln; 769189251Ssam 770189251Ssam ln = Lst_Find(makefiles, (void *)NULL, ReadMakefile); 771189251Ssam if (ln != NULL) 772189251Ssam Fatal("make: cannot open %s.", (char *)Lst_Datum(ln)); 773189251Ssam } else if (!ReadMakefile("makefile", NULL)) 774189251Ssam (void)ReadMakefile("Makefile", NULL); 775189251Ssam 776189251Ssam (void)ReadMakefile(".depend", NULL); 777189251Ssam 778189251Ssam Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 779189251Ssam efree(p1); 780189251Ssam 781189251Ssam /* Install all the flags into the MAKE envariable. */ 782189251Ssam if (((p = Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1)) != NULL) && *p) 783189251Ssam#ifdef POSIX 784189251Ssam setenv("MAKEFLAGS", p, 1); 785189251Ssam#else 786189251Ssam setenv("MAKE", p, 1); 787189251Ssam#endif 788189251Ssam efree(p1); 789189251Ssam 790189251Ssam /* 791189251Ssam * For compatibility, look at the directories in the VPATH variable 792189251Ssam * and add them to the search path, if the variable is defined. The 793189251Ssam * variable's value is in the same format as the PATH envariable, i.e. 794189251Ssam * <directory>:<directory>:<directory>... 795189251Ssam */ 796189251Ssam if (Var_Exists("VPATH", VAR_CMD)) { 797189251Ssam char *vpath, *path, *cp, savec; 798189251Ssam /* 799189251Ssam * GCC stores string constants in read-only memory, but 800189251Ssam * Var_Subst will want to write this thing, so store it 801189251Ssam * in an array 802189251Ssam */ 803189251Ssam static char VPATH[] = "${VPATH}"; 804189251Ssam 805189251Ssam vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE); 806189251Ssam path = vpath; 807189251Ssam do { 808189251Ssam /* skip to end of directory */ 809189251Ssam for (cp = path; *cp != ':' && *cp != '\0'; cp++) 810189251Ssam continue; 811189251Ssam /* Save terminator character so know when to stop */ 812189251Ssam savec = *cp; 813189251Ssam *cp = '\0'; 814189251Ssam /* Add directory to search path */ 815189251Ssam Dir_AddDir(dirSearchPath, path); 816189251Ssam *cp = savec; 817189251Ssam path = cp + 1; 818189251Ssam } while (savec == ':'); 819189251Ssam (void)free(vpath); 820189251Ssam } 821189251Ssam 822189251Ssam /* 823189251Ssam * Now that all search paths have been read for suffixes et al, it's 824189251Ssam * time to add the default search path to their lists... 825189251Ssam */ 826189251Ssam Suff_DoPaths(); 827189251Ssam 828189251Ssam /* print the initial graph, if the user requested it */ 829189251Ssam if (DEBUG(GRAPH1)) 830189251Ssam Targ_PrintGraph(1); 831189251Ssam 832189251Ssam /* print the values of any variables requested by the user */ 833189251Ssam if (printVars) { 834189251Ssam LstNode ln; 835189251Ssam 836189251Ssam for (ln = Lst_First(variables); ln != NULL; 837189251Ssam ln = Lst_Succ(ln)) { 838189251Ssam char *value; 839189251Ssam if (expandVars) { 840189251Ssam p1 = malloc(strlen((char *)Lst_Datum(ln)) + 1 + 3); 841189251Ssam if (!p1) 842189251Ssam Punt("make: cannot allocate memory."); 843189251Ssam /* This sprintf is safe, because of the malloc above */ 844189251Ssam (void)sprintf(p1, "${%s}", (char *)Lst_Datum(ln)); 845189251Ssam value = Var_Subst(NULL, p1, VAR_GLOBAL, FALSE); 846189251Ssam } else { 847189251Ssam value = Var_Value((char *)Lst_Datum(ln), 848189251Ssam VAR_GLOBAL, &p1); 849189251Ssam } 850189251Ssam printf("%s\n", value ? value : ""); 851189251Ssam if (p1) 852189251Ssam free(p1); 853189251Ssam } 854189251Ssam } 855189251Ssam 856189251Ssam /* 857189251Ssam * Have now read the entire graph and need to make a list of targets 858189251Ssam * to create. If none was given on the command line, we consult the 859189251Ssam * parsing module to find the main target(s) to create. 860189251Ssam */ 861189251Ssam if (Lst_IsEmpty(create)) 862189251Ssam targs = Parse_MainName(); 863189251Ssam else 864189251Ssam targs = Targ_FindList(create, TARG_CREATE); 865189251Ssam 866189251Ssam if (!compatMake && !printVars) { 867189251Ssam /* 868189251Ssam * Initialize job module before traversing the graph, now that 869189251Ssam * any .BEGIN and .END targets have been read. This is done 870189251Ssam * only if the -q flag wasn't given (to prevent the .BEGIN from 871189251Ssam * being executed should it exist). 872189251Ssam */ 873189251Ssam if (!queryFlag) { 874189251Ssam if (maxLocal == -1) 875189251Ssam maxLocal = maxJobs; 876189251Ssam Job_Init(maxJobs, maxLocal); 877189251Ssam jobsRunning = TRUE; 878189251Ssam } 879189251Ssam 880189251Ssam /* Traverse the graph, checking on all the targets */ 881189251Ssam outOfDate = Make_Run(targs); 882189251Ssam } else if (!printVars) { 883189251Ssam /* 884189251Ssam * Compat_Init will take care of creating all the targets as 885189251Ssam * well as initializing the module. 886189251Ssam */ 887189251Ssam Compat_Run(targs); 888189251Ssam } 889189251Ssam 890189251Ssam Lst_Destroy(targs, NOFREE); 891189251Ssam Lst_Destroy(variables, NOFREE); 892189251Ssam Lst_Destroy(makefiles, NOFREE); 893189251Ssam Lst_Destroy(create, (void (*) __P((void *))) free); 894189251Ssam 895189251Ssam /* print the graph now it's been processed if the user requested it */ 896189251Ssam if (DEBUG(GRAPH2)) 897189251Ssam Targ_PrintGraph(2); 898189251Ssam 899189251Ssam Suff_End(); 900189251Ssam Targ_End(); 901189251Ssam Arch_End(); 902189251Ssam str_end(); 903189251Ssam Var_End(); 904189251Ssam Parse_End(); 905189251Ssam Dir_End(); 906189251Ssam 907189251Ssam if (queryFlag && outOfDate) 908189251Ssam return(1); 909189251Ssam else 910189251Ssam return(0); 911189251Ssam} 912189251Ssam 913189251Ssam/*- 914189251Ssam * ReadMakefile -- 915189251Ssam * Open and parse the given makefile. 916189251Ssam * 917189251Ssam * Results: 918189251Ssam * TRUE if ok. FALSE if couldn't open file. 919189251Ssam * 920189251Ssam * Side Effects: 921189251Ssam * lots 922189251Ssam */ 923189251Ssamstatic Boolean 924189251SsamReadMakefile(p, q) 925189251Ssam void *p; 926189251Ssam void *q; 927189251Ssam{ 928189251Ssam char *fname = p; /* makefile to read */ 929189251Ssam extern Lst parseIncPath; 930189251Ssam FILE *stream; 931189251Ssam char *name, path[MAXPATHLEN]; 932189251Ssam 933189251Ssam if (!strcmp(fname, "-")) { 934189251Ssam Parse_File("(stdin)", stdin); 935189251Ssam Var_Set("MAKEFILE", "", VAR_GLOBAL); 936189251Ssam } else { 937189251Ssam /* if we've chdir'd, rebuild the path name */ 938189251Ssam if (curdir != objdir && *fname != '/') { 939189251Ssam (void)snprintf(path, MAXPATHLEN, "%s/%s", curdir, fname); 940189251Ssam if ((stream = fopen(path, "r")) != NULL) { 941189251Ssam fname = path; 942189251Ssam goto found; 943189251Ssam } 944189251Ssam } else if ((stream = fopen(fname, "r")) != NULL) 945189251Ssam goto found; 946189251Ssam /* look in -I and system include directories. */ 947189251Ssam name = Dir_FindFile(fname, parseIncPath); 948189251Ssam if (!name) 949189251Ssam name = Dir_FindFile(fname, sysIncPath); 950189251Ssam if (!name || !(stream = fopen(name, "r"))) 951189251Ssam return(FALSE); 952189251Ssam fname = name; 953189251Ssam /* 954189251Ssam * set the MAKEFILE variable desired by System V fans -- the 955189251Ssam * placement of the setting here means it gets set to the last 956189251Ssam * makefile specified, as it is set by SysV make. 957189251Ssam */ 958189251Ssamfound: Var_Set("MAKEFILE", fname, VAR_GLOBAL); 959189251Ssam Parse_File(fname, stream); 960189251Ssam (void)fclose(stream); 961189251Ssam } 962189251Ssam return(TRUE); 963189251Ssam} 964189251Ssam 965189251Ssam/*- 966189251Ssam * Cmd_Exec -- 967189251Ssam * Execute the command in cmd, and return the output of that command 968189251Ssam * in a string. 969189251Ssam * 970189251Ssam * Results: 971189251Ssam * A string containing the output of the command, or the empty string 972189251Ssam * If err is not NULL, it contains the reason for the command failure 973189251Ssam * 974189251Ssam * Side Effects: 975189251Ssam * The string must be freed by the caller. 976189251Ssam */ 977189251Ssamchar * 978189251SsamCmd_Exec(cmd, err) 979189251Ssam char *cmd; 980189251Ssam char **err; 981189251Ssam{ 982189251Ssam char *args[4]; /* Args for invoking the shell */ 983189251Ssam int fds[2]; /* Pipe streams */ 984189251Ssam int cpid; /* Child PID */ 985189251Ssam int pid; /* PID from wait() */ 986189251Ssam char *res; /* result */ 987189251Ssam int status; /* command exit status */ 988189251Ssam Buffer buf; /* buffer to store the result */ 989189251Ssam char *cp; 990189251Ssam int cc; 991189251Ssam 992189251Ssam 993189251Ssam *err = NULL; 994189251Ssam 995189251Ssam /* 996189251Ssam * Set up arguments for shell 997189251Ssam */ 998189251Ssam args[0] = "sh"; 999189251Ssam args[1] = "-c"; 1000189251Ssam args[2] = cmd; 1001189251Ssam args[3] = NULL; 1002189251Ssam 1003189251Ssam /* 1004189251Ssam * Open a pipe for fetching its output 1005189251Ssam */ 1006189251Ssam if (pipe(fds) == -1) { 1007189251Ssam *err = "Couldn't create pipe for \"%s\""; 1008189251Ssam goto bad; 1009189251Ssam } 1010189251Ssam 1011189251Ssam /* 1012189251Ssam * Fork 1013189251Ssam */ 1014189251Ssam switch (cpid = vfork()) { 1015189251Ssam case 0: 1016189251Ssam /* 1017189251Ssam * Close input side of pipe 1018189251Ssam */ 1019189251Ssam (void) close(fds[0]); 1020189251Ssam 1021189251Ssam /* 1022189251Ssam * Duplicate the output stream to the shell's output, then 1023189251Ssam * shut the extra thing down. Note we don't fetch the error 1024189251Ssam * stream...why not? Why? 1025189251Ssam */ 1026189251Ssam (void) dup2(fds[1], 1); 1027189251Ssam (void) close(fds[1]); 1028189251Ssam 1029189251Ssam#if DEFSHELL == 1 1030189251Ssam (void) execv("/bin/sh", args); 1031189251Ssam#elif DEFSHELL == 2 1032189251Ssam (void) execv("/bin/ksh", args); 1033189251Ssam#else 1034189251Ssam#error "DEFSHELL must be 1 or 2." 1035189251Ssam#endif 1036189251Ssam _exit(1); 1037189251Ssam /*NOTREACHED*/ 1038189251Ssam 1039189251Ssam case -1: 1040189251Ssam *err = "Couldn't exec \"%s\""; 1041189251Ssam goto bad; 1042189251Ssam 1043189251Ssam default: 1044189251Ssam /* 1045189251Ssam * No need for the writing half 1046189251Ssam */ 1047189251Ssam (void) close(fds[1]); 1048189251Ssam 1049189251Ssam buf = Buf_Init (MAKE_BSIZE); 1050189251Ssam 1051189251Ssam do { 1052189251Ssam char result[BUFSIZ]; 1053189251Ssam cc = read(fds[0], result, sizeof(result)); 1054189251Ssam if (cc > 0) 1055189251Ssam Buf_AddBytes(buf, cc, (Byte *) result); 1056189251Ssam } 1057189251Ssam while (cc > 0 || (cc == -1 && errno == EINTR)); 1058189251Ssam 1059189251Ssam /* 1060189251Ssam * Close the input side of the pipe. 1061189251Ssam */ 1062189251Ssam (void) close(fds[0]); 1063189251Ssam 1064189251Ssam /* 1065189251Ssam * Wait for the process to exit. 1066189251Ssam */ 1067189251Ssam while(((pid = wait(&status)) != cpid) && (pid >= 0)) 1068189251Ssam continue; 1069189251Ssam 1070189251Ssam if (cc == -1) 1071189251Ssam *err = "Error reading shell's output for \"%s\""; 1072189251Ssam 1073189251Ssam res = (char *)Buf_GetAll (buf, &cc); 1074189251Ssam Buf_Destroy (buf, FALSE); 1075189251Ssam 1076189251Ssam if (status) 1077189251Ssam *err = "\"%s\" returned non-zero status"; 1078189251Ssam 1079189251Ssam /* 1080189251Ssam * Null-terminate the result, convert newlines to spaces and 1081189251Ssam * install it in the variable. 1082189251Ssam */ 1083189251Ssam res[cc] = '\0'; 1084189251Ssam cp = &res[cc] - 1; 1085189251Ssam 1086189251Ssam if (*cp == '\n') { 1087189251Ssam /* 1088189251Ssam * A final newline is just stripped 1089189251Ssam */ 1090189251Ssam *cp-- = '\0'; 1091189251Ssam } 1092189251Ssam while (cp >= res) { 1093189251Ssam if (*cp == '\n') { 1094189251Ssam *cp = ' '; 1095189251Ssam } 1096189251Ssam cp--; 1097189251Ssam } 1098189251Ssam break; 1099189251Ssam } 1100189251Ssam return res; 1101189251Ssambad: 1102189251Ssam res = emalloc(1); 1103189251Ssam *res = '\0'; 1104189251Ssam return res; 1105189251Ssam} 1106189251Ssam 1107189251Ssam/*- 1108189251Ssam * Error -- 1109189251Ssam * Print an error message given its format. 1110189251Ssam * 1111189251Ssam * Results: 1112189251Ssam * None. 1113189251Ssam * 1114189251Ssam * Side Effects: 1115189251Ssam * The message is printed. 1116189251Ssam */ 1117189251Ssam/* VARARGS */ 1118189251Ssamvoid 1119189251Ssam#ifdef __STDC__ 1120189251SsamError(char *fmt, ...) 1121189251Ssam#else 1122189251SsamError(va_alist) 1123189251Ssam va_dcl 1124189251Ssam#endif 1125189251Ssam{ 1126189251Ssam va_list ap; 1127189251Ssam#ifdef __STDC__ 1128189251Ssam va_start(ap, fmt); 1129189251Ssam#else 1130189251Ssam char *fmt; 1131189251Ssam 1132189251Ssam va_start(ap); 1133189251Ssam fmt = va_arg(ap, char *); 1134189251Ssam#endif 1135189251Ssam (void)vfprintf(stderr, fmt, ap); 1136189251Ssam va_end(ap); 1137189251Ssam (void)fprintf(stderr, "\n"); 1138189251Ssam (void)fflush(stderr); 1139189251Ssam} 1140189251Ssam 1141189251Ssam/*- 1142189251Ssam * Fatal -- 1143189251Ssam * Produce a Fatal error message. If jobs are running, waits for them 1144189251Ssam * to finish. 1145189251Ssam * 1146189251Ssam * Results: 1147189251Ssam * None 1148189251Ssam * 1149189251Ssam * Side Effects: 1150189251Ssam * The program exits 1151189251Ssam */ 1152189251Ssam/* VARARGS */ 1153189251Ssamvoid 1154189251Ssam#ifdef __STDC__ 1155189251SsamFatal(char *fmt, ...) 1156189251Ssam#else 1157189251SsamFatal(va_alist) 1158189251Ssam va_dcl 1159189251Ssam#endif 1160189251Ssam{ 1161189251Ssam va_list ap; 1162189251Ssam#ifdef __STDC__ 1163189251Ssam va_start(ap, fmt); 1164189251Ssam#else 1165189251Ssam char *fmt; 1166189251Ssam 1167189251Ssam va_start(ap); 1168189251Ssam fmt = va_arg(ap, char *); 1169189251Ssam#endif 1170189251Ssam if (jobsRunning) 1171189251Ssam Job_Wait(); 1172189251Ssam 1173189251Ssam (void)vfprintf(stderr, fmt, ap); 1174189251Ssam va_end(ap); 1175189251Ssam (void)fprintf(stderr, "\n"); 1176189251Ssam (void)fflush(stderr); 1177189251Ssam 1178189251Ssam if (DEBUG(GRAPH2)) 1179189251Ssam Targ_PrintGraph(2); 1180189251Ssam exit(2); /* Not 1 so -q can distinguish error */ 1181189251Ssam} 1182189251Ssam 1183189251Ssam/* 1184189251Ssam * Punt -- 1185189251Ssam * Major exception once jobs are being created. Kills all jobs, prints 1186189251Ssam * a message and exits. 1187189251Ssam * 1188189251Ssam * Results: 1189189251Ssam * None 1190189251Ssam * 1191189251Ssam * Side Effects: 1192189251Ssam * All children are killed indiscriminately and the program Lib_Exits 1193189251Ssam */ 1194189251Ssam/* VARARGS */ 1195189251Ssamvoid 1196189251Ssam#ifdef __STDC__ 1197189251SsamPunt(char *fmt, ...) 1198189251Ssam#else 1199189251SsamPunt(va_alist) 1200189251Ssam va_dcl 1201189251Ssam#endif 1202189251Ssam{ 1203189251Ssam va_list ap; 1204189251Ssam#if __STDC__ 1205189251Ssam va_start(ap, fmt); 1206189251Ssam#else 1207189251Ssam char *fmt; 1208189251Ssam 1209189251Ssam va_start(ap); 1210189251Ssam fmt = va_arg(ap, char *); 1211189251Ssam#endif 1212189251Ssam 1213189251Ssam (void)fprintf(stderr, "make: "); 1214189251Ssam (void)vfprintf(stderr, fmt, ap); 1215189251Ssam va_end(ap); 1216189251Ssam (void)fprintf(stderr, "\n"); 1217189251Ssam (void)fflush(stderr); 1218189251Ssam 1219189251Ssam DieHorribly(); 1220189251Ssam} 1221189251Ssam 1222189251Ssam/*- 1223189251Ssam * DieHorribly -- 1224189251Ssam * Exit without giving a message. 1225189251Ssam * 1226189251Ssam * Results: 1227189251Ssam * None 1228189251Ssam * 1229189251Ssam * Side Effects: 1230189251Ssam * A big one... 1231189251Ssam */ 1232189251Ssamvoid 1233189251SsamDieHorribly() 1234189251Ssam{ 1235189251Ssam if (jobsRunning) 1236189251Ssam Job_AbortAll(); 1237189251Ssam if (DEBUG(GRAPH2)) 1238189251Ssam Targ_PrintGraph(2); 1239189251Ssam exit(2); /* Not 1, so -q can distinguish error */ 1240189251Ssam} 1241189251Ssam 1242189251Ssam/* 1243189251Ssam * Finish -- 1244189251Ssam * Called when aborting due to errors in child shell to signal 1245189251Ssam * abnormal exit. 1246189251Ssam * 1247189251Ssam * Results: 1248189251Ssam * None 1249189251Ssam * 1250189251Ssam * Side Effects: 1251189251Ssam * The program exits 1252189251Ssam */ 1253189251Ssamvoid 1254189251SsamFinish(errors) 1255189251Ssam int errors; /* number of errors encountered in Make_Make */ 1256189251Ssam{ 1257189251Ssam Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1258189251Ssam} 1259189251Ssam 1260189251Ssam/* 1261189251Ssam * emalloc -- 1262189251Ssam * malloc, but die on error. 1263189251Ssam */ 1264189251Ssamvoid * 1265189251Ssamemalloc(len) 1266189251Ssam size_t len; 1267189251Ssam{ 1268189251Ssam void *p; 1269189251Ssam 1270189251Ssam if ((p = malloc(len)) == NULL) 1271189251Ssam enomem(); 1272189251Ssam return(p); 1273189251Ssam} 1274189251Ssam 1275189251Ssam/* 1276189251Ssam * estrdup -- 1277189251Ssam * strdup, but die on error. 1278189251Ssam */ 1279189251Ssamchar * 1280189251Ssamestrdup(str) 1281189251Ssam const char *str; 1282189251Ssam{ 1283189251Ssam char *p; 1284189251Ssam 1285189251Ssam if ((p = strdup(str)) == NULL) 1286189251Ssam enomem(); 1287189251Ssam return(p); 1288189251Ssam} 1289189251Ssam 1290189251Ssam/* 1291189251Ssam * erealloc -- 1292189251Ssam * realloc, but die on error. 1293189251Ssam */ 1294189251Ssamvoid * 1295189251Ssamerealloc(ptr, size) 1296189251Ssam void *ptr; 1297189251Ssam size_t size; 1298189251Ssam{ 1299189251Ssam if ((ptr = realloc(ptr, size)) == NULL) 1300189251Ssam enomem(); 1301189251Ssam return(ptr); 1302189251Ssam} 1303189251Ssam 1304189251Ssam/* 1305189251Ssam * enomem -- 1306189251Ssam * die when out of memory. 1307189251Ssam */ 1308189251Ssamvoid 1309189251Ssamenomem() 1310189251Ssam{ 1311189251Ssam err(2, NULL); 1312189251Ssam} 1313189251Ssam 1314189251Ssam/* 1315189251Ssam * enunlink -- 1316189251Ssam * Remove a file carefully, avoiding directories. 1317189251Ssam */ 1318189251Ssamint 1319189251Ssameunlink(file) 1320189251Ssam const char *file; 1321189251Ssam{ 1322189251Ssam struct stat st; 1323189251Ssam 1324189251Ssam if (lstat(file, &st) == -1) 1325189251Ssam return -1; 1326 1327 if (S_ISDIR(st.st_mode)) { 1328 errno = EISDIR; 1329 return -1; 1330 } 1331 return unlink(file); 1332} 1333 1334/* 1335 * usage -- 1336 * exit with usage message 1337 */ 1338static void 1339usage() 1340{ 1341 (void)fprintf(stderr, "%s\n%s\n%s\n", 1342"usage: make [-Beiknqrstv] [-D variable] [-d flags] [-E variable] [-f makefile]", 1343" [-I directory] [-j max_jobs] [-m directory] [-V variable]", 1344" [variable=value] [target ...]"); 1345 exit(2); 1346} 1347 1348 1349int 1350PrintAddr(a, b) 1351 void * a; 1352 void * b; 1353{ 1354 printf("%lx ", (unsigned long) a); 1355 return b ? 0 : 0; 1356} 1357