make.h

   1 /* Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993
   2         Free Software Foundation, Inc.
   3 This file is part of GNU Make.
   4
   5 GNU Make is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 GNU Make is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GNU Make; see the file COPYING.  If not, write to
  17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /* AIX requires this to be the first thing in the file.  */
  20 #if defined (_AIX) && !defined (__GNUC__)
  21  #pragma alloca
  22 #endif
  23
  24 /* We use <config.h> instead of "config.h" so that a compilation
  25    using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
  26    (which it would do because make.h was found in $srcdir).  */
  27 #include <config.h>
  28 #undef  HAVE_CONFIG_H
  29 #define HAVE_CONFIG_H
  30
  31 #ifdef  CRAY
  32 /* This must happen before #include <signal.h> so
  33    that the declaration therein is changed.  */
  34 #define signal  bsdsignal
  35 #endif
  36
  37 #define _GNU_SOURCE
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <signal.h>
  41 #include <stdio.h>
  42 #include <ctype.h>
  43 #ifdef HAVE_SYS_TIMEB_H
  44 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
  45    unless <sys/timeb.h> has been included first.  Does every system have a
  46    <sys/timeb.h>?  If any does not, configure should check for it.  */
  47 #include <sys/timeb.h>
  48 #endif
  49 #include <time.h>
  50 #include <errno.h>
  51
  52 #ifndef errno
  53 extern int errno;
  54 #endif
  55
  56 #ifndef isblank
  57 #define isblank(c)      ((c) == ' ' || (c) == '\t')
  58 #endif
  59
  60 #ifdef  HAVE_UNISTD_H
  61 #include <unistd.h>
  62 #ifdef  _POSIX_VERSION
  63 #define POSIX
  64 #endif
  65 #endif
  66
  67 /* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
  68 #if (defined (butterfly) || \
  69      (defined (__mips) && defined (_SYSTYPE_SVR3)) || \
  70      (defined (sequent) && defined (i386)))
  71 #undef POSIX
  72 #endif
  73
  74 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
  75 #define POSIX
  76 #endif
  77
  78 #if !defined (HAVE_SYS_SIGLIST) && defined (HAVE__SYS_SIGLIST)
  79 #define sys_siglist     _sys_siglist
  80 #define HAVE_SYS_SIGLIST        /* Now we have it.  */
  81
  82 /* It was declared in <signal.h>, with who knows what type.
  83    Don't declare it again and risk conflicting.  */
  84 #define SYS_SIGLIST_DECLARED
  85 #endif
  86
  87 #ifdef HAVE_SYS_SIGLIST
  88 #ifndef SYS_SIGLIST_DECLARED
  89 extern char *sys_siglist[];
  90 #endif
  91 #else
  92 #include "signame.h"
  93 #endif
  94
  95 /* Some systems do not define NSIG in <signal.h>.  */
  96 #ifndef NSIG
  97 #ifdef  _NSIG
  98 #define NSIG    _NSIG
  99 #else
 100 #define NSIG    32
 101 #endif
 102 #endif
 103
 104 #ifndef RETSIGTYPE
 105 #define RETSIGTYPE      void
 106 #endif
 107
 108 #ifndef sigmask
 109 #define sigmask(sig)    (1 << ((sig) - 1))
 110 #endif
 111
 112 #ifdef  HAVE_LIMITS_H
 113 #include <limits.h>
 114 #endif
 115 #ifdef  HAVE_SYS_PARAM_H
 116 #include <sys/param.h>
 117 #endif
 118
 119 #ifndef PATH_MAX
 120 #ifndef POSIX
 121 #define PATH_MAX        MAXPATHLEN
 122 #endif  /* Not POSIX.  */
 123 #endif  /* No PATH_MAX.  */
 124 #ifndef MAXPATHLEN
 125 #define MAXPATHLEN 1024
 126 #endif  /* No MAXPATHLEN.  */
 127
 128 #ifdef  PATH_MAX
 129 #define GET_PATH_MAX    PATH_MAX
 130 #define PATH_VAR(var)   char var[PATH_MAX]
 131 #else
 132 #define NEED_GET_PATH_MAX
 133 extern unsigned int get_path_max ();
 134 #define GET_PATH_MAX    (get_path_max ())
 135 #define PATH_VAR(var)   char *var = (char *) alloca (GET_PATH_MAX)
 136 #endif
 137
 138 #ifdef  STAT_MACROS_BROKEN
 139 #ifdef  S_ISREG
 140 #undef  S_ISREG
 141 #endif
 142 #ifdef  S_ISDIR
 143 #undef  S_ISDIR
 144 #endif
 145 #endif  /* STAT_MACROS_BROKEN.  */
 146
 147 #ifndef S_ISREG
 148 #define S_ISREG(mode)   (((mode) & S_IFMT) == S_IFREG)
 149 #endif
 150 #ifndef S_ISDIR
 151 #define S_ISDIR(mode)   (((mode) & S_IFMT) == S_IFDIR)
 152 #endif
 153
 154
 155 #if     (defined (STDC_HEADERS) || defined (__GNU_LIBRARY__))
 156 #include <stdlib.h>
 157 #include <string.h>
 158 #define ANSI_STRING
 159 #else   /* No standard headers.  */
 160
 161 #ifdef HAVE_STRING_H
 162 #include <string.h>
 163 #define ANSI_STRING
 164 #else
 165 #include <strings.h>
 166 #endif
 167 #ifdef  HAVE_MEMORY_H
 168 #include <memory.h>
 169 #endif
 170
 171 extern char *malloc (), *realloc ();
 172 extern void free ();
 173
 174 extern void qsort ();
 175 extern void abort (), exit ();
 176
 177 #endif  /* Standard headers.  */
 178
 179 #ifdef  ANSI_STRING
 180
 181 #ifndef index
 182 #define index(s, c)     strchr((s), (c))
 183 #endif
 184 #ifndef rindex
 185 #define rindex(s, c)    strrchr((s), (c))
 186 #endif
 187
 188 #ifndef bcmp
 189 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 190 #endif
 191 #ifndef bzero
 192 #define bzero(s, n)     memset ((s), 0, (n))
 193 #endif
 194 #ifndef bcopy
 195 #define bcopy(s, d, n)  memcpy ((d), (s), (n))
 196 #endif
 197
 198 #else   /* Not ANSI_STRING.  */
 199
 200 #ifndef bcmp
 201 extern int bcmp ();
 202 #endif
 203 #ifndef bzero
 204 extern void bzero ();
 205 #endif
 206 #ifndef bcopy
 207 extern void bcopy ();
 208 #endif
 209
 210 #endif  /* ANSI_STRING.  */
 211 #undef  ANSI_STRING
 212
 213
 214 #ifdef  __GNUC__
 215 #undef  alloca
 216 #define alloca(n)       __builtin_alloca (n)
 217 #else   /* Not GCC.  */
 218 #ifdef  HAVE_ALLOCA_H
 219 #include <alloca.h>
 220 #else   /* Not HAVE_ALLOCA_H.  */
 221 #ifndef _AIX
 222 extern char *alloca ();
 223 #endif  /* Not AIX.  */
 224 #endif  /* HAVE_ALLOCA_H.  */
 225 #endif  /* GCC.  */
 226
 227 #ifndef iAPX286
 228 #define streq(a, b) \
 229   ((a) == (b) || \
 230    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 231 #else
 232 /* Buggy compiler can't handle this.  */
 233 #define streq(a, b) (strcmp ((a), (b)) == 0)
 234 #endif
 235
 236 /* Add to VAR the hashing value of C, one character in a name.  */
 237 #define HASH(var, c) \
 238   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 239
 240 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 241 #define ENUM_BITFIELD(bits)     :bits
 242 #else
 243 #define ENUM_BITFIELD(bits)
 244 #endif
 245
 246 extern void die ();
 247 extern void message (), fatal (), error ();
 248 extern void makefile_error (), makefile_fatal ();
 249 extern void pfatal_with_name (), perror_with_name ();
 250 extern char *savestring (), *concat ();
 251 extern char *xmalloc (), *xrealloc ();
 252 extern char *find_next_token (), *next_token (), *end_of_token ();
 253 extern void collapse_continuations (), remove_comments ();
 254 extern char *sindex (), *lindex ();
 255 extern int alpha_compare ();
 256 extern void print_spaces ();
 257 extern struct dep *copy_dep_chain ();
 258 extern char *find_percent ();
 259
 260 #ifndef NO_ARCHIVES
 261 extern int ar_name ();
 262 extern void ar_parse_name ();
 263 extern int ar_touch ();
 264 extern time_t ar_member_date ();
 265 #endif
 266
 267 extern void dir_load ();
 268 extern int dir_file_exists_p (), file_exists_p (), file_impossible_p ();
 269 extern void file_impossible ();
 270 extern char *dir_name ();
 271
 272 extern void define_default_variables ();
 273 extern void set_default_suffixes (), install_default_suffix_rules ();
 274 extern void install_default_implicit_rules (), count_implicit_rule_limits ();
 275 extern void convert_to_pattern (), create_pattern_rule ();
 276
 277 extern void build_vpath_lists (), construct_vpath_list ();
 278 extern int vpath_search ();
 279
 280 extern void construct_include_path ();
 281 extern void uniquize_deps ();
 282
 283 extern int update_goal_chain ();
 284 extern void notice_finished_file ();
 285
 286 extern void user_access (), make_access (), child_access ();
 287
 288
 289 #ifdef  HAVE_VFORK_H
 290 #include <vfork.h>
 291 #endif
 292
 293 #if !defined (__GNU_LIBRARY__) && !defined (POSIX)
 294
 295 #ifdef  HAVE_SIGSETMASK
 296 extern int sigsetmask ();
 297 extern int sigblock ();
 298 #endif
 299 extern int kill ();
 300 extern int atoi ();
 301 extern long int atol ();
 302 extern int unlink (), stat (), fstat ();
 303 extern int pipe (), close (), read (), write (), open ();
 304 extern long int lseek ();
 305
 306 #endif  /* Not GNU C library or POSIX.  */
 307
 308 #ifdef  HAVE_GETCWD
 309 extern char *getcwd ();
 310 #else
 311 extern char *getwd ();
 312 #define getcwd(buf, len)        getwd (buf)
 313 #endif
 314
 315 extern char **environ;
 316
 317 extern char *reading_filename;
 318 extern unsigned int *reading_lineno_ptr;
 319
 320 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 321 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 322 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 323 extern int print_directory_flag, warn_undefined_variables_flag;
 324
 325 extern unsigned int job_slots;
 326 extern double max_load_average;
 327
 328 extern char *program;
 329 extern char *starting_directory;
 330 extern unsigned int makelevel;
 331 extern char *version_string, *remote_description;
 332
 333 extern unsigned int commands_started;
 334
 335 extern int handling_fatal_signal;
 336
 337
 338 #define DEBUGPR(msg) \
 339   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 340                        fflush (stdout); } while (0)