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main.c
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main.c
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/* Argument parsing and main program of GNU Make.
Copyright (C) 1988-2013 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>. */
#include "makeint.h"
#include "dep.h"
#include "filedef.h"
#include "variable.h"
#include "job.h"
#include "commands.h"
#include "rule.h"
#include "debug.h"
#include "getopt.h"
#include <assert.h>
#ifdef _AMIGA
# include <dos/dos.h>
# include <proto/dos.h>
#endif
#ifdef WINDOWS32
# include <windows.h>
# include <io.h>
# include "pathstuff.h"
# include "sub_proc.h"
# include "w32err.h"
#endif
#ifdef __EMX__
# include <sys/types.h>
# include <sys/wait.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef _AMIGA
int __stack = 20000; /* Make sure we have 20K of stack space */
#endif
void init_dir (void);
void remote_setup (void);
void remote_cleanup (void);
RETSIGTYPE fatal_error_signal (int sig);
void print_variable_data_base (void);
void print_dir_data_base (void);
void print_rule_data_base (void);
void print_vpath_data_base (void);
void verify_file_data_base (void);
#if defined HAVE_WAITPID || defined HAVE_WAIT3
# define HAVE_WAIT_NOHANG
#endif
#if defined(HAVE_DIRECT_H) && !defined(HAVE_UNISTD_H) /* Windows has chdir() in <direct.h> */
int chdir ();
#endif
#ifndef STDC_HEADERS
# ifndef sun /* Sun has an incorrect decl in a header. */
void exit (int) __attribute__ ((noreturn));
# endif
double atof ();
#endif
static void clean_jobserver (int status);
static void print_data_base (void);
static void print_version (void);
static void decode_switches (int argc, char **argv, int env);
static void decode_env_switches (char *envar, unsigned int len);
static struct variable *define_makeflags (int all, int makefile);
static char *quote_for_env (char *out, const char *in);
static void initialize_global_hash_tables (void);
/* The structure that describes an accepted command switch. */
struct command_switch
{
int c; /* The switch character. */
enum /* Type of the value. */
{
flag, /* Turn int flag on. */
flag_off, /* Turn int flag off. */
string, /* One string per switch. */
filename, /* A string containing a file name. */
positive_int, /* A positive integer. */
floating, /* A floating-point number (double). */
ignore /* Ignored. */
} type;
void *value_ptr; /* Pointer to the value-holding variable. */
unsigned int env:1; /* Can come from MAKEFLAGS. */
unsigned int toenv:1; /* Should be put in MAKEFLAGS. */
unsigned int no_makefile:1; /* Don't propagate when remaking makefiles. */
const void *noarg_value; /* Pointer to value used if no arg given. */
const void *default_value; /* Pointer to default value. */
char *long_name; /* Long option name. */
};
/* True if C is a switch value that corresponds to a short option. */
#define short_option(c) ((c) <= CHAR_MAX)
/* The structure used to hold the list of strings given
in command switches of a type that takes string arguments. */
struct stringlist
{
const char **list; /* Nil-terminated list of strings. */
unsigned int idx; /* Index into above. */
unsigned int max; /* Number of pointers allocated. */
};
/* The recognized command switches. */
/* Nonzero means do extra verification (that may slow things down). */
int verify_flag;
/* Nonzero means do not print commands to be executed (-s). */
int silent_flag;
/* Nonzero means just touch the files
that would appear to need remaking (-t) */
int touch_flag;
/* Nonzero means just print what commands would need to be executed,
don't actually execute them (-n). */
int just_print_flag;
/* Print debugging info (--debug). */
static struct stringlist *db_flags = 0;
static int debug_flag = 0;
int db_level = 0;
/* Synchronize output (--output-sync). */
static struct stringlist *output_sync_option = 0;
#ifdef WINDOWS32
/* Suspend make in main for a short time to allow debugger to attach */
int suspend_flag = 0;
#endif
/* Environment variables override makefile definitions. */
int env_overrides = 0;
/* Nonzero means ignore status codes returned by commands
executed to remake files. Just treat them all as successful (-i). */
int ignore_errors_flag = 0;
/* Nonzero means don't remake anything, just print the data base
that results from reading the makefile (-p). */
int print_data_base_flag = 0;
/* Nonzero means don't remake anything; just return a nonzero status
if the specified targets are not up to date (-q). */
int question_flag = 0;
/* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
int no_builtin_rules_flag = 0;
int no_builtin_variables_flag = 0;
/* Nonzero means keep going even if remaking some file fails (-k). */
int keep_going_flag;
int default_keep_going_flag = 0;
/* Nonzero means check symlink mtimes. */
int check_symlink_flag = 0;
/* Nonzero means print directory before starting and when done (-w). */
int print_directory_flag = 0;
/* Nonzero means ignore print_directory_flag and never print the directory.
This is necessary because print_directory_flag is set implicitly. */
int inhibit_print_directory_flag = 0;
/* Nonzero means print version information. */
int print_version_flag = 0;
/* List of makefiles given with -f switches. */
static struct stringlist *makefiles = 0;
/* Size of the stack when we started. */
#ifdef SET_STACK_SIZE
struct rlimit stack_limit;
#endif
/* Number of job slots (commands that can be run at once). */
unsigned int job_slots = 1;
unsigned int default_job_slots = 1;
static unsigned int master_job_slots = 0;
/* Value of job_slots that means no limit. */
static unsigned int inf_jobs = 0;
/* File descriptors for the jobs pipe. */
static struct stringlist *jobserver_fds = 0;
int job_fds[2] = { -1, -1 };
int job_rfd = -1;
/* Handle for the mutex used on Windows to synchronize output of our
children under -O. */
static struct stringlist *sync_mutex = 0;
/* Maximum load average at which multiple jobs will be run.
Negative values mean unlimited, while zero means limit to
zero load (which could be useful to start infinite jobs remotely
but one at a time locally). */
#ifndef NO_FLOAT
double max_load_average = -1.0;
double default_load_average = -1.0;
#else
int max_load_average = -1;
int default_load_average = -1;
#endif
/* List of directories given with -C switches. */
static struct stringlist *directories = 0;
/* List of include directories given with -I switches. */
static struct stringlist *include_directories = 0;
/* List of files given with -o switches. */
static struct stringlist *old_files = 0;
/* List of files given with -W switches. */
static struct stringlist *new_files = 0;
/* List of strings to be eval'd. */
static struct stringlist *eval_strings = 0;
/* If nonzero, we should just print usage and exit. */
static int print_usage_flag = 0;
/* If nonzero, we should print a warning message
for each reference to an undefined variable. */
int warn_undefined_variables_flag;
/* If nonzero, always build all targets, regardless of whether
they appear out of date or not. */
static int always_make_set = 0;
int always_make_flag = 0;
/* If nonzero, we're in the "try to rebuild makefiles" phase. */
int rebuilding_makefiles = 0;
/* Remember the original value of the SHELL variable, from the environment. */
struct variable shell_var;
/* This character introduces a command: it's the first char on the line. */
char cmd_prefix = '\t';
/* The usage output. We write it this way to make life easier for the
translators, especially those trying to translate to right-to-left
languages like Hebrew. */
static const char *const usage[] =
{
N_("Options:\n"),
N_("\
-b, -m Ignored for compatibility.\n"),
N_("\
-B, --always-make Unconditionally make all targets.\n"),
N_("\
-C DIRECTORY, --directory=DIRECTORY\n\
Change to DIRECTORY before doing anything.\n"),
N_("\
-d Print lots of debugging information.\n"),
N_("\
--debug[=FLAGS] Print various types of debugging information.\n"),
N_("\
-e, --environment-overrides\n\
Environment variables override makefiles.\n"),
N_("\
--eval=STRING Evaluate STRING as a makefile statement.\n"),
N_("\
-f FILE, --file=FILE, --makefile=FILE\n\
Read FILE as a makefile.\n"),
N_("\
-h, --help Print this message and exit.\n"),
N_("\
-i, --ignore-errors Ignore errors from recipes.\n"),
N_("\
-I DIRECTORY, --include-dir=DIRECTORY\n\
Search DIRECTORY for included makefiles.\n"),
N_("\
-j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
N_("\
-k, --keep-going Keep going when some targets can't be made.\n"),
N_("\
-l [N], --load-average[=N], --max-load[=N]\n\
Don't start multiple jobs unless load is below N.\n"),
N_("\
-L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
N_("\
-n, --just-print, --dry-run, --recon\n\
Don't actually run any recipe; just print them.\n"),
N_("\
-o FILE, --old-file=FILE, --assume-old=FILE\n\
Consider FILE to be very old and don't remake it.\n"),
N_("\
-O[TYPE], --output-sync[=TYPE]\n\
Synchronize output of parallel jobs by TYPE.\n"),
N_("\
-p, --print-data-base Print make's internal database.\n"),
N_("\
-q, --question Run no recipe; exit status says if up to date.\n"),
N_("\
-r, --no-builtin-rules Disable the built-in implicit rules.\n"),
N_("\
-R, --no-builtin-variables Disable the built-in variable settings.\n"),
N_("\
-s, --silent, --quiet Don't echo recipes.\n"),
N_("\
-S, --no-keep-going, --stop\n\
Turns off -k.\n"),
N_("\
-t, --touch Touch targets instead of remaking them.\n"),
N_("\
--trace Print tracing information.\n"),
N_("\
-v, --version Print the version number of make and exit.\n"),
N_("\
-w, --print-directory Print the current directory.\n"),
N_("\
--no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
N_("\
-W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
Consider FILE to be infinitely new.\n"),
N_("\
--warn-undefined-variables Warn when an undefined variable is referenced.\n"),
NULL
};
/* The table of command switches.
Order matters here: this is the order MAKEFLAGS will be constructed.
So be sure all simple flags (single char, no argument) come first. */
static const struct command_switch switches[] =
{
{ 'b', ignore, 0, 0, 0, 0, 0, 0, 0 },
{ 'B', flag, &always_make_set, 1, 1, 0, 0, 0, "always-make" },
{ 'd', flag, &debug_flag, 1, 1, 0, 0, 0, 0 },
#ifdef WINDOWS32
{ 'D', flag, &suspend_flag, 1, 1, 0, 0, 0, "suspend-for-debug" },
#endif
{ 'e', flag, &env_overrides, 1, 1, 0, 0, 0, "environment-overrides", },
{ 'h', flag, &print_usage_flag, 0, 0, 0, 0, 0, "help" },
{ 'i', flag, &ignore_errors_flag, 1, 1, 0, 0, 0, "ignore-errors" },
{ 'k', flag, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
"keep-going" },
{ 'L', flag, &check_symlink_flag, 1, 1, 0, 0, 0, "check-symlink-times" },
{ 'm', ignore, 0, 0, 0, 0, 0, 0, 0 },
{ 'n', flag, &just_print_flag, 1, 1, 1, 0, 0, "just-print" },
{ 'p', flag, &print_data_base_flag, 1, 1, 0, 0, 0, "print-data-base" },
{ 'q', flag, &question_flag, 1, 1, 1, 0, 0, "question" },
{ 'r', flag, &no_builtin_rules_flag, 1, 1, 0, 0, 0, "no-builtin-rules" },
{ 'R', flag, &no_builtin_variables_flag, 1, 1, 0, 0, 0,
"no-builtin-variables" },
{ 's', flag, &silent_flag, 1, 1, 0, 0, 0, "silent" },
{ 'S', flag_off, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
"no-keep-going" },
{ 't', flag, &touch_flag, 1, 1, 1, 0, 0, "touch" },
{ 'v', flag, &print_version_flag, 1, 1, 0, 0, 0, "version" },
{ 'w', flag, &print_directory_flag, 1, 1, 0, 0, 0, "print-directory" },
/* These options take arguments. */
{ 'C', filename, &directories, 0, 0, 0, 0, 0, "directory" },
{ 'f', filename, &makefiles, 0, 0, 0, 0, 0, "file" },
{ 'I', filename, &include_directories, 1, 1, 0, 0, 0,
"include-dir" },
{ 'j', positive_int, &job_slots, 1, 1, 0, &inf_jobs, &default_job_slots,
"jobs" },
#ifndef NO_FLOAT
{ 'l', floating, &max_load_average, 1, 1, 0, &default_load_average,
&default_load_average, "load-average" },
#else
{ 'l', positive_int, &max_load_average, 1, 1, 0, &default_load_average,
&default_load_average, "load-average" },
#endif
{ 'o', filename, &old_files, 0, 0, 0, 0, 0, "old-file" },
{ 'O', string, &output_sync_option, 1, 1, 0, "target", 0, "output-sync" },
{ 'W', filename, &new_files, 0, 0, 0, 0, 0, "what-if" },
/* These are long-style options. */
{ CHAR_MAX+1, string, &db_flags, 1, 1, 0, "basic", 0, "debug" },
{ CHAR_MAX+2, string, &jobserver_fds, 1, 1, 0, 0, 0, "jobserver-fds" },
{ CHAR_MAX+3, flag, &trace_flag, 1, 1, 0, 0, 0, "trace" },
{ CHAR_MAX+4, flag, &inhibit_print_directory_flag, 1, 1, 0, 0, 0,
"no-print-directory" },
{ CHAR_MAX+5, flag, &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
"warn-undefined-variables" },
{ CHAR_MAX+6, string, &eval_strings, 1, 0, 0, 0, 0, "eval" },
{ CHAR_MAX+7, string, &sync_mutex, 1, 1, 0, 0, 0, "sync-mutex" },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};
/* Secondary long names for options. */
static struct option long_option_aliases[] =
{
{ "quiet", no_argument, 0, 's' },
{ "stop", no_argument, 0, 'S' },
{ "new-file", required_argument, 0, 'W' },
{ "assume-new", required_argument, 0, 'W' },
{ "assume-old", required_argument, 0, 'o' },
{ "max-load", optional_argument, 0, 'l' },
{ "dry-run", no_argument, 0, 'n' },
{ "recon", no_argument, 0, 'n' },
{ "makefile", required_argument, 0, 'f' },
};
/* List of goal targets. */
static struct dep *goals, *lastgoal;
/* List of variables which were defined on the command line
(or, equivalently, in MAKEFLAGS). */
struct command_variable
{
struct command_variable *next;
struct variable *variable;
};
static struct command_variable *command_variables;
/* The name we were invoked with. */
char *program;
/* Our current directory before processing any -C options. */
char *directory_before_chdir;
/* Our current directory after processing all -C options. */
char *starting_directory;
/* Value of the MAKELEVEL variable at startup (or 0). */
unsigned int makelevel;
/* Pointer to the value of the .DEFAULT_GOAL special variable.
The value will be the name of the goal to remake if the command line
does not override it. It can be set by the makefile, or else it's
the first target defined in the makefile whose name does not start
with '.'. */
struct variable * default_goal_var;
/* Pointer to structure for the file .DEFAULT
whose commands are used for any file that has none of its own.
This is zero if the makefiles do not define .DEFAULT. */
struct file *default_file;
/* Nonzero if we have seen the magic '.POSIX' target.
This turns on pedantic compliance with POSIX.2. */
int posix_pedantic;
/* Nonzero if we have seen the '.SECONDEXPANSION' target.
This turns on secondary expansion of prerequisites. */
int second_expansion;
/* Nonzero if we have seen the '.ONESHELL' target.
This causes the entire recipe to be handed to SHELL
as a single string, potentially containing newlines. */
int one_shell;
/* One of OUTPUT_SYNC_* if the "--output-sync" option was given. This
attempts to synchronize the output of parallel jobs such that the results
of each job stay together. */
int output_sync = OUTPUT_SYNC_NONE;
/* Nonzero if the "--trace" option was given. */
int trace_flag = 0;
/* Nonzero if we have seen the '.NOTPARALLEL' target.
This turns off parallel builds for this invocation of make. */
int not_parallel;
/* Nonzero if some rule detected clock skew; we keep track so (a) we only
print one warning about it during the run, and (b) we can print a final
warning at the end of the run. */
int clock_skew_detected;
/* Map of possible stop characters for searching strings. */
#ifndef UCHAR_MAX
# define UCHAR_MAX 255
#endif
unsigned short stopchar_map[UCHAR_MAX + 1] = {0};
/* Mask of signals that are being caught with fatal_error_signal. */
#ifdef POSIX
sigset_t fatal_signal_set;
#else
# ifdef HAVE_SIGSETMASK
int fatal_signal_mask;
# endif
#endif
#if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
# if !defined HAVE_SIGACTION
# define bsd_signal signal
# else
typedef RETSIGTYPE (*bsd_signal_ret_t) (int);
static bsd_signal_ret_t
bsd_signal (int sig, bsd_signal_ret_t func)
{
struct sigaction act, oact;
act.sa_handler = func;
act.sa_flags = SA_RESTART;
sigemptyset (&act.sa_mask);
sigaddset (&act.sa_mask, sig);
if (sigaction (sig, &act, &oact) != 0)
return SIG_ERR;
return oact.sa_handler;
}
# endif
#endif
static void
initialize_global_hash_tables (void)
{
init_hash_global_variable_set ();
strcache_init ();
init_hash_files ();
hash_init_directories ();
hash_init_function_table ();
}
/* This character map locate stop chars when parsing GNU makefiles.
Each element is true if we should stop parsing on that character. */
static void
initialize_stopchar_map ()
{
int i;
stopchar_map[(int)'\0'] = MAP_NUL;
stopchar_map[(int)'#'] = MAP_COMMENT;
stopchar_map[(int)';'] = MAP_SEMI;
stopchar_map[(int)'='] = MAP_EQUALS;
stopchar_map[(int)':'] = MAP_COLON;
stopchar_map[(int)'%'] = MAP_PERCENT;
stopchar_map[(int)'|'] = MAP_PIPE;
stopchar_map[(int)'.'] = MAP_DOT;
stopchar_map[(int)','] = MAP_COMMA;
stopchar_map[(int)'$'] = MAP_VARIABLE;
stopchar_map[(int)'/'] = MAP_PATHSEP;
#if defined(VMS)
stopchar_map[(int)']'] = MAP_PATHSEP;
#elif defined(HAVE_DOS_PATHS)
stopchar_map[(int)'\\'] = MAP_PATHSEP;
#endif
for (i = 1; i <= UCHAR_MAX; ++i)
{
if (isblank(i))
stopchar_map[i] = MAP_BLANK;
if (isspace(i))
stopchar_map[i] |= MAP_SPACE;
}
}
static const char *
expand_command_line_file (char *name)
{
const char *cp;
char *expanded = 0;
if (name[0] == '\0')
fatal (NILF, _("empty string invalid as file name"));
if (name[0] == '~')
{
expanded = tilde_expand (name);
if (expanded != 0)
name = expanded;
}
/* This is also done in parse_file_seq, so this is redundant
for names read from makefiles. It is here for names passed
on the command line. */
while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
{
name += 2;
while (*name == '/')
/* Skip following slashes: ".//foo" is "foo", not "/foo". */
++name;
}
if (*name == '\0')
{
/* It was all slashes! Move back to the dot and truncate
it after the first slash, so it becomes just "./". */
do
--name;
while (name[0] != '.');
name[2] = '\0';
}
cp = strcache_add (name);
if (expanded)
free (expanded);
return cp;
}
/* Toggle -d on receipt of SIGUSR1. */
#ifdef SIGUSR1
static RETSIGTYPE
debug_signal_handler (int sig UNUSED)
{
db_level = db_level ? DB_NONE : DB_BASIC;
}
#endif
static void
decode_debug_flags (void)
{
const char **pp;
if (debug_flag)
db_level = DB_ALL;
if (db_flags)
for (pp=db_flags->list; *pp; ++pp)
{
const char *p = *pp;
while (1)
{
switch (tolower (p[0]))
{
case 'a':
db_level |= DB_ALL;
break;
case 'b':
db_level |= DB_BASIC;
break;
case 'i':
db_level |= DB_BASIC | DB_IMPLICIT;
break;
case 'j':
db_level |= DB_JOBS;
break;
case 'm':
db_level |= DB_BASIC | DB_MAKEFILES;
break;
case 'n':
db_level = 0;
break;
case 'v':
db_level |= DB_BASIC | DB_VERBOSE;
break;
default:
fatal (NILF, _("unknown debug level specification '%s'"), p);
}
while (*(++p) != '\0')
if (*p == ',' || *p == ' ')
{
++p;
break;
}
if (*p == '\0')
break;
}
}
if (db_level)
verify_flag = 1;
if (! db_level)
debug_flag = 0;
}
static void
decode_output_sync_flags (void)
{
const char **pp;
if (!output_sync_option)
return;
for (pp=output_sync_option->list; *pp; ++pp)
{
const char *p = *pp;
if (streq (p, "none"))
output_sync = OUTPUT_SYNC_NONE;
else if (streq (p, "line"))
output_sync = OUTPUT_SYNC_LINE;
else if (streq (p, "target"))
output_sync = OUTPUT_SYNC_TARGET;
else if (streq (p, "recurse"))
output_sync = OUTPUT_SYNC_RECURSE;
else
fatal (NILF, _("unknown output-sync type '%s'"), p);
}
if (sync_mutex)
{
const char *mp;
unsigned int idx;
for (idx = 1; idx < sync_mutex->idx; idx++)
if (!streq (sync_mutex->list[0], sync_mutex->list[idx]))
fatal (NILF, _("internal error: multiple --sync-mutex options"));
/* Now parse the mutex handle string. */
mp = sync_mutex->list[0];
RECORD_SYNC_MUTEX (mp);
}
}
#ifdef WINDOWS32
#ifdef OUTPUT_SYNC
/* This is called from start_job_command when it detects that
output_sync option is in effect. The handle to the synchronization
mutex is passed, as a string, to sub-makes via the --sync-mutex
command-line argument. */
void
prepare_mutex_handle_string (sync_handle_t handle)
{
if (!sync_mutex)
{
/* 2 hex digits per byte + 2 characters for "0x" + null. */
char hdl_string[2 * sizeof (sync_handle_t) + 2 + 1];
/* Prepare the mutex handle string for our children. */
sprintf (hdl_string, "0x%x", handle);
sync_mutex = xmalloc (sizeof (struct stringlist));
sync_mutex->list = xmalloc (sizeof (char *));
sync_mutex->list[0] = xstrdup (hdl_string);
sync_mutex->idx = 1;
sync_mutex->max = 1;
define_makeflags (1, 0);
}
}
#endif /* OUTPUT_SYNC */
/*
* HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
* exception and print it to stderr instead.
*
* If ! DB_VERBOSE, just print a simple message and exit.
* If DB_VERBOSE, print a more verbose message.
* If compiled for DEBUG, let exception pass through to GUI so that
* debuggers can attach.
*/
LONG WINAPI
handle_runtime_exceptions (struct _EXCEPTION_POINTERS *exinfo)
{
PEXCEPTION_RECORD exrec = exinfo->ExceptionRecord;
LPSTR cmdline = GetCommandLine ();
LPSTR prg = strtok (cmdline, " ");
CHAR errmsg[1024];
#ifdef USE_EVENT_LOG
HANDLE hEventSource;
LPTSTR lpszStrings[1];
#endif
if (! ISDB (DB_VERBOSE))
{
sprintf (errmsg,
_("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
prg, exrec->ExceptionCode, exrec->ExceptionAddress);
fprintf (stderr, errmsg);
exit (255);
}
sprintf (errmsg,
_("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = 0x%p\n"),
prg, exrec->ExceptionCode, exrec->ExceptionFlags,
exrec->ExceptionAddress);
if (exrec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION
&& exrec->NumberParameters >= 2)
sprintf (&errmsg[strlen(errmsg)],
(exrec->ExceptionInformation[0]
? _("Access violation: write operation at address 0x%p\n")
: _("Access violation: read operation at address 0x%p\n")),
(PVOID)exrec->ExceptionInformation[1]);
/* turn this on if we want to put stuff in the event log too */
#ifdef USE_EVENT_LOG
hEventSource = RegisterEventSource (NULL, "GNU Make");
lpszStrings[0] = errmsg;
if (hEventSource != NULL)
{
ReportEvent (hEventSource, /* handle of event source */
EVENTLOG_ERROR_TYPE, /* event type */
0, /* event category */
0, /* event ID */
NULL, /* current user's SID */
1, /* strings in lpszStrings */
0, /* no bytes of raw data */
lpszStrings, /* array of error strings */
NULL); /* no raw data */
(VOID) DeregisterEventSource (hEventSource);
}
#endif
/* Write the error to stderr too */
fprintf (stderr, errmsg);
#ifdef DEBUG
return EXCEPTION_CONTINUE_SEARCH;
#else
exit (255);
return (255); /* not reached */
#endif
}
/*
* On WIN32 systems we don't have the luxury of a /bin directory that
* is mapped globally to every drive mounted to the system. Since make could
* be invoked from any drive, and we don't want to propagate /bin/sh
* to every single drive. Allow ourselves a chance to search for
* a value for default shell here (if the default path does not exist).
*/
int
find_and_set_default_shell (const char *token)
{
int sh_found = 0;
char *atoken = 0;
char *search_token;
char *tokend;
PATH_VAR(sh_path);
extern char *default_shell;
if (!token)
search_token = default_shell;
else
atoken = search_token = xstrdup (token);
/* If the user explicitly requests the DOS cmd shell, obey that request.
However, make sure that's what they really want by requiring the value
of SHELL either equal, or have a final path element of, "cmd" or
"cmd.exe" case-insensitive. */
tokend = search_token + strlen (search_token) - 3;
if (((tokend == search_token
|| (tokend > search_token
&& (tokend[-1] == '/' || tokend[-1] == '\\')))
&& !strcasecmp (tokend, "cmd"))
|| ((tokend - 4 == search_token
|| (tokend - 4 > search_token
&& (tokend[-5] == '/' || tokend[-5] == '\\')))
&& !strcasecmp (tokend - 4, "cmd.exe")))
{
batch_mode_shell = 1;
unixy_shell = 0;
sprintf (sh_path, "%s", search_token);
default_shell = xstrdup (w32ify (sh_path, 0));
DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
default_shell));
sh_found = 1;
}
else if (!no_default_sh_exe
&& (token == NULL || !strcmp (search_token, default_shell)))
{
/* no new information, path already set or known */
sh_found = 1;
}
else if (_access (search_token, 0) == 0)
{
/* search token path was found */
sprintf (sh_path, "%s", search_token);
default_shell = xstrdup (w32ify (sh_path, 0));
DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
default_shell));
sh_found = 1;
}
else
{
char *p;
struct variable *v = lookup_variable (STRING_SIZE_TUPLE ("PATH"));
/* Search Path for shell */
if (v && v->value)
{
char *ep;
p = v->value;
ep = strchr (p, PATH_SEPARATOR_CHAR);
while (ep && *ep)
{
*ep = '\0';
sprintf (sh_path, "%s/%s", p, search_token);
if (_access (sh_path, 0) == 0)
{
default_shell = xstrdup (w32ify (sh_path, 0));
sh_found = 1;
*ep = PATH_SEPARATOR_CHAR;
/* terminate loop */
p += strlen (p);
}
else
{
*ep = PATH_SEPARATOR_CHAR;
p = ++ep;
}
ep = strchr (p, PATH_SEPARATOR_CHAR);
}
/* be sure to check last element of Path */
if (p && *p)
{
sprintf (sh_path, "%s/%s", p, search_token);
if (_access (sh_path, 0) == 0)
{
default_shell = xstrdup (w32ify (sh_path, 0));
sh_found = 1;
}
}
if (sh_found)
DB (DB_VERBOSE,
(_("find_and_set_shell() path search set default_shell = %s\n"),
default_shell));
}