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| Current File : //compat/linux/proc/68247/cwd/usr/src/usr.bin/make/main.c |
/*-
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/usr.bin/make/main.c 213494 2010-10-06 20:54:17Z imp $");
/*
* 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 <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/queue.h>
#include <sys/resource.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#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 */
/**
* 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 relateive
* 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 inconsistant with historical
* XXX behavior. However, I can't pentrate 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 enviornment 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;
if (uname(&utsname) == -1)
err(2, "uname");
machine = utsname.machine;
}
if ((machine_arch = getenv("MACHINE_ARCH")) == NULL) {
#ifdef MACHINE_ARCH
machine_arch = MACHINE_ARCH;
#else
machine_arch = "unknown";
#endif
}
/*
* Set machine_cpu to the minumum 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 = "i386";
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 apropriately. 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.
* <directory>:<directory>:<directory>...
*/
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);
}