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make/make.h
Paul Smith e34540f79b * Release 3.77.92. 
* Complete implementation of new jobserver algorithm.
* A few minor fixups.
1999-08-01 08:12:06 +00:00

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/* Miscellaneous global declarations and portability cruft for GNU Make.
Copyright (C) 1988,89,90,91,92,93,94,95,96,97,99 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 2, 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 GNU Make; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* AIX requires this to be the first thing in the file. */
#if defined (_AIX) && !defined (__GNUC__)
#pragma alloca
#endif
/* We use <config.h> instead of "config.h" so that a compilation
using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
(which it would do because make.h was found in $srcdir). */
#include <config.h>
#undef HAVE_CONFIG_H
#define HAVE_CONFIG_H 1
/* Use prototypes if available. */
#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
# undef PARAMS
# define PARAMS(protos) protos
#else /* Not C++ or ANSI C. */
# undef PARAMS
# define PARAMS(protos) ()
#endif /* C++ or ANSI C. */
/* For now, set gettext macro to a no-op. */
#undef _
#undef N_
#define _(s) s
#define N_(s) s
#ifdef CRAY
/* This must happen before #include <signal.h> so
that the declaration therein is changed. */
# define signal bsdsignal
#endif
/* If we're compiling for the dmalloc debugger, turn off string inlining. */
#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
# define __NO_STRING_INLINES
#endif
#define _GNU_SOURCE 1
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <stdio.h>
#include <ctype.h>
#ifdef HAVE_SYS_TIMEB_H
/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
unless <sys/timeb.h> has been included first. Does every system have a
<sys/timeb.h>? If any does not, configure should check for it. */
# include <sys/timeb.h>
#endif
#include <time.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
/* A shortcut for EINTR checking. Note you should never negate this! That
very likely doesn't mean what you want if EINTR is not available. */
#ifdef EINTR
# define EINTR_SET (errno == EINTR)
#else
# define EINTR_SET (0)
#endif
#ifndef isblank
# define isblank(c) ((c) == ' ' || (c) == '\t')
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
# define POSIX 1
# endif
#endif
/* Some systems define _POSIX_VERSION but are not really POSIX.1. */
#if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
# undef POSIX
#endif
#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
# define POSIX 1
#endif
#if defined (HAVE_SYS_SIGLIST) && !defined (SYS_SIGLIST_DECLARED)
extern char *sys_siglist[];
#endif
#if !defined (HAVE_SYS_SIGLIST) || !defined (HAVE_STRSIGNAL)
# include "signame.h"
#endif
/* Some systems do not define NSIG in <signal.h>. */
#ifndef NSIG
# ifdef _NSIG
# define NSIG _NSIG
# else
# define NSIG 32
# endif
#endif
#ifndef RETSIGTYPE
# define RETSIGTYPE void
#endif
#ifndef sigmask
# define sigmask(sig) (1 << ((sig) - 1))
#endif
#ifdef HAVE_LIMITS_H
# include <limits.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifndef PATH_MAX
# ifndef POSIX
# define PATH_MAX MAXPATHLEN
# endif
#endif
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#ifdef PATH_MAX
# define GET_PATH_MAX PATH_MAX
# define PATH_VAR(var) char var[PATH_MAX]
#else
# define NEED_GET_PATH_MAX 1
# define GET_PATH_MAX (get_path_max ())
# define PATH_VAR(var) char *var = (char *) alloca (GET_PATH_MAX)
extern unsigned int get_path_max PARAMS ((void));
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
/* Nonzero if the integer type T is signed. */
#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
/* The minimum and maximum values for the integer type T.
Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
#define INTEGER_TYPE_MINIMUM(t) \
(! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
#ifdef STAT_MACROS_BROKEN
# ifdef S_ISREG
# undef S_ISREG
# endif
# ifdef S_ISDIR
# undef S_ISDIR
# endif
#endif /* STAT_MACROS_BROKEN. */
#ifndef S_ISREG
# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
#endif
#ifndef S_ISDIR
# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
#ifdef VMS
# include <stdio.h>
# include <types.h>
# include <unixlib.h>
# include <unixio.h>
# include <errno.h>
# include <perror.h>
#endif
#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
# define __attribute__(x)
# endif
/* The __-protected variants of `format' and `printf' attributes
are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
# define __format__ format
# define __printf__ printf
# endif
#endif
#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
# include <stdlib.h>
# include <string.h>
# define ANSI_STRING 1
#else /* No standard headers. */
# ifdef HAVE_STRING_H
# include <string.h>
# define ANSI_STRING 1
# else
# include <strings.h>
# endif
# ifdef HAVE_MEMORY_H
# include <memory.h>
# endif
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# else
extern char *malloc PARAMS ((int));
extern char *realloc PARAMS ((char *, int));
extern void free PARAMS ((char *));
extern void abort PARAMS ((void)) __attribute__ ((noreturn));
extern void exit PARAMS ((int)) __attribute__ ((noreturn));
# endif /* HAVE_STDLIB_H. */
#endif /* Standard headers. */
#if ST_MTIM_NSEC
# if HAVE_INTTYPES_H
# include <inttypes.h>
# endif
# define FILE_TIMESTAMP uintmax_t
#else
# define FILE_TIMESTAMP time_t
#endif
#ifdef ANSI_STRING
# ifndef index
# define index(s, c) strchr((s), (c))
# endif
# ifndef rindex
# define rindex(s, c) strrchr((s), (c))
# endif
# ifndef bcmp
# define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
# endif
# ifndef bzero
# define bzero(s, n) memset ((s), 0, (n))
# endif
# if defined(HAVE_MEMMOVE) && !defined(bcopy)
# define bcopy(s, d, n) memmove ((d), (s), (n))
# endif
#else /* Not ANSI_STRING. */
# ifndef bcmp
extern int bcmp PARAMS ((const char *, const char *, int));
# endif
# ifndef bzero
extern void bzero PARAMS ((char *, int));
#endif
# ifndef bcopy
extern void bcopy PARAMS ((const char *b1, char *b2, int));
# endif
#endif /* ANSI_STRING. */
#undef ANSI_STRING
/* SCO Xenix has a buggy macro definition in <string.h>. */
#undef strerror
#if !defined(ANSI_STRING) && !defined(__DECC)
extern char *strerror PARAMS ((int errnum));
#endif
#ifdef __GNUC__
# undef alloca
# define alloca(n) __builtin_alloca (n)
#else /* Not GCC. */
# ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else /* Not HAVE_ALLOCA_H. */
# ifndef _AIX
extern char *alloca ();
# endif /* Not AIX. */
# endif /* HAVE_ALLOCA_H. */
#endif /* GCC. */
#ifndef iAPX286
# define streq(a, b) \
((a) == (b) || \
(*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
# ifdef HAVE_CASE_INSENSITIVE_FS
/* This is only used on Windows/DOS platforms, so we assume strcmpi(). */
# define strieq(a, b) \
((a) == (b) || \
(tolower(*(a)) == tolower(*(b)) && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1))))
# else
# define strieq(a, b) streq(a, b)
# endif
#else
/* Buggy compiler can't handle this. */
# define streq(a, b) (strcmp ((a), (b)) == 0)
# define strieq(a, b) (strcmp ((a), (b)) == 0)
#endif
#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
/* Add to VAR the hashing value of C, one character in a name. */
#define HASH(var, c) \
((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
#ifdef HAVE_CASE_INSENSITIVE_FS /* Fold filenames */
# define HASHI(var, c) \
((var += tolower((c))), (var = ((var) << 7) + ((var) >> 20)))
#else
# define HASHI(var, c) HASH(var,c)
#endif
#if defined(__GNUC__) || defined(ENUM_BITFIELDS)
# define ENUM_BITFIELD(bits) :bits
#else
# define ENUM_BITFIELD(bits)
#endif
#if defined(__MSDOS__) || defined(WINDOWS32)
# define PATH_SEPARATOR_CHAR ';'
#else
# if defined(VMS)
# define PATH_SEPARATOR_CHAR ','
# else
# define PATH_SEPARATOR_CHAR ':'
# endif
#endif
#ifdef WINDOWS32
# include <fcntl.h>
# include <malloc.h>
# define pipe(p) _pipe(p, 512, O_BINARY)
# define kill(pid,sig) w32_kill(pid,sig)
extern void sync_Path_environment(void);
extern int kill(int pid, int sig);
extern int safe_stat(char *file, struct stat *sb);
extern char *end_of_token_w32(char *s, char stopchar);
extern int find_and_set_default_shell(char *token);
/* indicates whether or not we have Bourne shell */
extern int no_default_sh_exe;
/* is default_shell unixy? */
extern int unixy_shell;
#endif /* WINDOWS32 */
struct floc
{
char *filenm;
unsigned long lineno;
};
#define NILF ((struct floc *)0)
/* Fancy processing for variadic functions in both ANSI and pre-ANSI
compilers. */
#if defined __STDC__ && __STDC__
extern void message (int prefix, const char *fmt, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
extern void error (const struct floc *flocp, const char *fmt, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
extern void fatal (const struct floc *flocp, const char *fmt, ...)
__attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
#else
extern void message ();
extern void error ();
extern void fatal ();
#endif
extern void die PARAMS ((int)) __attribute__ ((noreturn));
extern void log_working_directory PARAMS ((int));
extern void pfatal_with_name PARAMS ((char *)) __attribute__ ((noreturn));
extern void perror_with_name PARAMS ((char *, char *));
extern char *savestring PARAMS ((const char *, unsigned int));
extern char *concat PARAMS ((char *, char *, char *));
extern char *xmalloc PARAMS ((unsigned int));
extern char *xrealloc PARAMS ((char *, unsigned int));
extern char *xstrdup PARAMS ((const char *));
extern char *find_next_token PARAMS ((char **, unsigned int *));
extern char *next_token PARAMS ((char *));
extern char *end_of_token PARAMS ((char *));
extern void collapse_continuations PARAMS ((char *));
extern void remove_comments PARAMS((char *));
extern char *sindex PARAMS ((const char *, unsigned int, \
const char *, unsigned int));
extern char *lindex PARAMS ((const char *, const char *, int));
extern int alpha_compare PARAMS ((const void *, const void *));
extern void print_spaces PARAMS ((unsigned int));
extern char *find_char_unquote PARAMS ((char *, char *, int));
extern char *find_percent PARAMS ((char *));
#ifndef NO_ARCHIVES
extern int ar_name PARAMS ((char *));
extern void ar_parse_name PARAMS ((char *, char **, char **));
extern int ar_touch PARAMS ((char *));
extern time_t ar_member_date PARAMS ((char *));
#endif
extern int dir_file_exists_p PARAMS ((char *, char *));
extern int file_exists_p PARAMS ((char *));
extern int file_impossible_p PARAMS ((char *));
extern void file_impossible PARAMS ((char *));
extern char *dir_name PARAMS ((char *));
extern void define_default_variables PARAMS ((void));
extern void set_default_suffixes PARAMS ((void));
extern void install_default_suffix_rules PARAMS ((void));
extern void install_default_implicit_rules PARAMS ((void));
extern void build_vpath_lists PARAMS ((void));
extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath));
extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr));
extern int gpath_search PARAMS ((char *file, int len));
extern void construct_include_path PARAMS ((char **arg_dirs));
extern void user_access PARAMS ((void));
extern void make_access PARAMS ((void));
extern void child_access PARAMS ((void));
#ifdef HAVE_VFORK_H
# include <vfork.h>
#endif
/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
because such systems often declare them in header files anyway. */
#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
extern long int atol ();
# ifndef VMS
extern long int lseek ();
# endif
#endif /* Not GNU C library or POSIX. */
#ifdef HAVE_GETCWD
extern char *getcwd ();
# ifdef VMS
extern char *getwd PARAMS ((char *));
# endif
#else
extern char *getwd ();
# define getcwd(buf, len) getwd (buf)
#endif
extern const struct floc *reading_file;
extern char **environ;
extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
extern int print_version_flag, print_directory_flag;
extern int warn_undefined_variables_flag, posix_pedantic;
extern int clock_skew_detected;
/* can we run commands via 'sh -c xxx' or must we use batch files? */
extern int batch_mode_shell;
extern unsigned int job_slots;
extern int job_fds[2];
#ifndef NO_FLOAT
extern double max_load_average;
#else
extern int max_load_average;
#endif
extern char *program;
extern char *starting_directory;
extern unsigned int makelevel;
extern char *version_string, *remote_description;
extern unsigned int commands_started;
extern int handling_fatal_signal;
#ifndef MIN
#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
#endif
#ifndef MAX
#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
#endif
#define DEBUGPR(msg) \
do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
fflush (stdout); } while (0)
#ifdef VMS
# ifndef EXIT_FAILURE
# define EXIT_FAILURE 3
# endif
# ifndef EXIT_SUCCESS
# define EXIT_SUCCESS 1
# endif
# ifndef EXIT_TROUBLE
# define EXIT_TROUBLE 2
# endif
#else
# ifndef EXIT_FAILURE
# define EXIT_FAILURE 2
# endif
# ifndef EXIT_SUCCESS
# define EXIT_SUCCESS 0
# endif
# ifndef EXIT_TROUBLE
# define EXIT_TROUBLE 1
# endif
#endif
/* Set up heap debugging library dmalloc. */
#ifdef HAVE_DMALLOC_H
#include <dmalloc.h>
#endif
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