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 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
  44    unless <sys/timeb.h> has been included first.  Does every system have a
  45    <sys/timeb.h>?  If any does not, configure should check for it.  */
  46 #include <sys/timeb.h>
  47 #include <time.h>
  48 #include <errno.h>
  49
  50 #ifndef errno
  51 extern int errno;
  52 #endif
  53
  54 #ifndef isblank
  55 #define isblank(c)      ((c) == ' ' || (c) == '\t')
  56 #endif
  57
  58 #ifdef  HAVE_UNISTD_H
  59 #include <unistd.h>
  60 #ifdef  _POSIX_VERSION
  61 #define POSIX
  62 #endif
  63 #endif
  64
  65 /* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
  66 #if (defined (butterfly) || \
  67      (defined (__mips) && defined (_SYSTYPE_SVR3)) || \
  68      (defined (sequent) && defined (i386)))
  69 #undef POSIX
  70 #endif
  71
  72 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
  73 #define POSIX
  74 #endif
  75
  76 #if !defined (HAVE_SYS_SIGLIST) && defined (HAVE__SYS_SIGLIST)
  77 #define sys_siglist     _sys_siglist
  78 #define HAVE_SYS_SIGLIST        /* Now we have it.  */
  79
  80 /* It was declared in <signal.h>, with who knows what type.
  81    Don't declare it again and risk conflicting.  */
  82 #define SYS_SIGLIST_DECLARED
  83 #endif
  84
  85 #ifdef HAVE_SYS_SIGLIST
  86 #ifndef SYS_SIGLIST_DECLARED
  87 extern char *sys_siglist[];
  88 #endif
  89 #else
  90 #include "signame.h"
  91 #endif
  92
  93 /* Some systems do not define NSIG in <signal.h>.  */
  94 #ifndef NSIG
  95 #ifdef  _NSIG
  96 #define NSIG    _NSIG
  97 #else
  98 #define NSIG    32
  99 #endif
 100 #endif
 101
 102 #ifndef RETSIGTYPE
 103 #define RETSIGTYPE      void
 104 #endif
 105
 106 #ifndef sigmask
 107 #define sigmask(sig)    (1 << ((sig) - 1))
 108 #endif
 109
 110 #ifdef  HAVE_LIMITS_H
 111 #include <limits.h>
 112 #endif
 113 #ifdef  HAVE_SYS_PARAM_H
 114 #include <sys/param.h>
 115 #endif
 116
 117 #ifndef PATH_MAX
 118 #ifndef POSIX
 119 #define PATH_MAX        MAXPATHLEN
 120 #endif  /* Not POSIX.  */
 121 #endif  /* No PATH_MAX.  */
 122 #ifndef MAXPATHLEN
 123 #define MAXPATHLEN 1024
 124 #endif  /* No MAXPATHLEN.  */
 125
 126 #ifdef  PATH_MAX
 127 #define GET_PATH_MAX    PATH_MAX
 128 #define PATH_VAR(var)   char var[PATH_MAX]
 129 #else
 130 #define NEED_GET_PATH_MAX
 131 extern unsigned int get_path_max ();
 132 #define GET_PATH_MAX    (get_path_max ())
 133 #define PATH_VAR(var)   char *var = (char *) alloca (GET_PATH_MAX)
 134 #endif
 135
 136 #ifdef  STAT_MACROS_BROKEN
 137 #ifdef  S_ISREG
 138 #undef  S_ISREG
 139 #endif
 140 #ifdef  S_ISDIR
 141 #undef  S_ISDIR
 142 #endif
 143 #endif  /* STAT_MACROS_BROKEN.  */
 144
 145 #ifndef S_ISREG
 146 #define S_ISREG(mode)   (((mode) & S_IFMT) == S_IFREG)
 147 #endif
 148 #ifndef S_ISDIR
 149 #define S_ISDIR(mode)   (((mode) & S_IFMT) == S_IFDIR)
 150 #endif
 151
 152
 153 #if     (defined (STDC_HEADERS) || defined (__GNU_LIBRARY__))
 154 #include <stdlib.h>
 155 #include <string.h>
 156 #define ANSI_STRING
 157 #else   /* No standard headers.  */
 158
 159 #ifdef HAVE_STRING_H
 160 #include <string.h>
 161 #define ANSI_STRING
 162 #else
 163 #include <strings.h>
 164 #endif
 165 #ifdef  HAVE_MEMORY_H
 166 #include <memory.h>
 167 #endif
 168
 169 extern char *malloc (), *realloc ();
 170 extern void free ();
 171
 172 extern void qsort ();
 173 extern void abort (), exit ();
 174
 175 #endif  /* Standard headers.  */
 176
 177 #ifdef  ANSI_STRING
 178
 179 #ifndef index
 180 #define index(s, c)     strchr((s), (c))
 181 #endif
 182 #ifndef rindex
 183 #define rindex(s, c)    strrchr((s), (c))
 184 #endif
 185
 186 #ifndef bcmp
 187 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 188 #endif
 189 #ifndef bzero
 190 #define bzero(s, n)     memset ((s), 0, (n))
 191 #endif
 192 #ifndef bcopy
 193 #define bcopy(s, d, n)  memcpy ((d), (s), (n))
 194 #endif
 195
 196 #else   /* Not ANSI_STRING.  */
 197
 198 #ifndef bcmp
 199 extern int bcmp ();
 200 #endif
 201 #ifndef bzero
 202 extern void bzero ();
 203 #endif
 204 #ifndef bcopy
 205 extern void bcopy ();
 206 #endif
 207
 208 #endif  /* ANSI_STRING.  */
 209 #undef  ANSI_STRING
 210
 211
 212 #ifdef  __GNUC__
 213 #undef  alloca
 214 #define alloca(n)       __builtin_alloca (n)
 215 #else   /* Not GCC.  */
 216 #ifdef  HAVE_ALLOCA_H
 217 #include <alloca.h>
 218 #else   /* Not HAVE_ALLOCA_H.  */
 219 #ifndef _AIX
 220 extern char *alloca ();
 221 #endif  /* Not AIX.  */
 222 #endif  /* HAVE_ALLOCA_H.  */
 223 #endif  /* GCC.  */
 224
 225 #ifndef iAPX286
 226 #define streq(a, b) \
 227   ((a) == (b) || \
 228    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 229 #else
 230 /* Buggy compiler can't handle this.  */
 231 #define streq(a, b) (strcmp ((a), (b)) == 0)
 232 #endif
 233
 234 /* Add to VAR the hashing value of C, one character in a name.  */
 235 #define HASH(var, c) \
 236   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 237
 238 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 239 #define ENUM_BITFIELD(bits)     :bits
 240 #else
 241 #define ENUM_BITFIELD(bits)
 242 #endif
 243
 244 extern void die ();
 245 extern void message (), fatal (), error ();
 246 extern void makefile_error (), makefile_fatal ();
 247 extern void pfatal_with_name (), perror_with_name ();
 248 extern char *savestring (), *concat ();
 249 extern char *xmalloc (), *xrealloc ();
 250 extern char *find_next_token (), *next_token (), *end_of_token ();
 251 extern void collapse_continuations (), remove_comments ();
 252 extern char *sindex (), *lindex ();
 253 extern int alpha_compare ();
 254 extern void print_spaces ();
 255 extern struct dep *copy_dep_chain ();
 256 extern char *find_percent ();
 257
 258 #ifndef NO_ARCHIVES
 259 extern int ar_name ();
 260 extern void ar_parse_name ();
 261 extern int ar_touch ();
 262 extern time_t ar_member_date ();
 263 #endif
 264
 265 extern void dir_load ();
 266 extern int dir_file_exists_p (), file_exists_p (), file_impossible_p ();
 267 extern void file_impossible ();
 268 extern char *dir_name ();
 269
 270 extern void define_default_variables ();
 271 extern void set_default_suffixes (), install_default_suffix_rules ();
 272 extern void install_default_implicit_rules (), count_implicit_rule_limits ();
 273 extern void convert_to_pattern (), create_pattern_rule ();
 274
 275 extern void build_vpath_lists (), construct_vpath_list ();
 276 extern int vpath_search ();
 277
 278 extern void construct_include_path ();
 279 extern void uniquize_deps ();
 280
 281 extern int update_goal_chain ();
 282 extern void notice_finished_file ();
 283
 284 extern void user_access (), make_access (), child_access ();
 285
 286
 287 #ifdef  HAVE_VFORK_H
 288 #include <vfork.h>
 289 #endif
 290
 291 #if !defined (__GNU_LIBRARY__) && !defined (POSIX)
 292
 293 #ifdef  HAVE_SIGSETMASK
 294 extern int sigsetmask ();
 295 extern int sigblock ();
 296 #endif
 297 extern int kill ();
 298 extern int atoi ();
 299 extern long int atol ();
 300 extern int unlink (), stat (), fstat ();
 301 extern int pipe (), close (), read (), write (), open ();
 302 extern long int lseek ();
 303
 304 #endif  /* Not GNU C library or POSIX.  */
 305
 306 #ifdef  HAVE_GETCWD
 307 extern char *getcwd ();
 308 #else
 309 extern char *getwd ();
 310 #define getcwd(buf, len)        getwd (buf)
 311 #endif
 312
 313 extern char **environ;
 314
 315 extern char *reading_filename;
 316 extern unsigned int *reading_lineno_ptr;
 317
 318 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 319 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 320 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 321 extern int print_directory_flag, warn_undefined_variables_flag;
 322
 323 extern unsigned int job_slots;
 324 extern double max_load_average;
 325
 326 extern char *program;
 327 extern char *starting_directory;
 328 extern unsigned int makelevel;
 329 extern char *version_string, *remote_description;
 330
 331 extern unsigned int commands_started;
 332
 333 extern int handling_fatal_signal;
 334
 335
 336 #define DEBUGPR(msg) \
 337   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 338                        fflush (stdout); } while (0)