make.h

   1 /* Miscellaneous global declarations and portability cruft for GNU Make.
   2 Copyright (C) 1988, 89, 90, 91, 92, 93, 94 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 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
  63    POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself!  */
  64 #if defined (_POSIX_VERSION) && !defined (ultrix)
  65 #define POSIX
  66 #endif
  67 #endif
  68
  69 /* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
  70 #if (defined (butterfly) || defined (__arm) \
  71      (defined (__mips) && defined (_SYSTYPE_SVR3)) || \
  72      (defined (sequent) && defined (i386)))
  73 #undef POSIX
  74 #endif
  75
  76 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
  77 #define POSIX
  78 #endif
  79
  80 #if !defined (HAVE_SYS_SIGLIST) && defined (HAVE__SYS_SIGLIST)
  81 #define sys_siglist     _sys_siglist
  82 #define HAVE_SYS_SIGLIST        /* Now we have it.  */
  83
  84 /* It was declared in <signal.h>, with who knows what type.
  85    Don't declare it again and risk conflicting.  */
  86 #define SYS_SIGLIST_DECLARED
  87 #endif
  88
  89 #ifdef HAVE_SYS_SIGLIST
  90 #ifndef SYS_SIGLIST_DECLARED
  91 extern char *sys_siglist[];
  92 #endif
  93 #else
  94 #include "signame.h"
  95 #endif
  96
  97 /* Some systems do not define NSIG in <signal.h>.  */
  98 #ifndef NSIG
  99 #ifdef  _NSIG
 100 #define NSIG    _NSIG
 101 #else
 102 #define NSIG    32
 103 #endif
 104 #endif
 105
 106 #ifndef RETSIGTYPE
 107 #define RETSIGTYPE      void
 108 #endif
 109
 110 #ifndef sigmask
 111 #define sigmask(sig)    (1 << ((sig) - 1))
 112 #endif
 113
 114 #ifdef  HAVE_LIMITS_H
 115 #include <limits.h>
 116 #endif
 117 #ifdef  HAVE_SYS_PARAM_H
 118 #include <sys/param.h>
 119 #endif
 120
 121 #ifndef PATH_MAX
 122 #ifndef POSIX
 123 #define PATH_MAX        MAXPATHLEN
 124 #endif  /* Not POSIX.  */
 125 #endif  /* No PATH_MAX.  */
 126 #ifndef MAXPATHLEN
 127 #define MAXPATHLEN 1024
 128 #endif  /* No MAXPATHLEN.  */
 129
 130 #ifdef  PATH_MAX
 131 #define GET_PATH_MAX    PATH_MAX
 132 #define PATH_VAR(var)   char var[PATH_MAX]
 133 #else
 134 #define NEED_GET_PATH_MAX
 135 extern unsigned int get_path_max ();
 136 #define GET_PATH_MAX    (get_path_max ())
 137 #define PATH_VAR(var)   char *var = (char *) alloca (GET_PATH_MAX)
 138 #endif
 139
 140 #ifdef  STAT_MACROS_BROKEN
 141 #ifdef  S_ISREG
 142 #undef  S_ISREG
 143 #endif
 144 #ifdef  S_ISDIR
 145 #undef  S_ISDIR
 146 #endif
 147 #endif  /* STAT_MACROS_BROKEN.  */
 148
 149 #ifndef S_ISREG
 150 #define S_ISREG(mode)   (((mode) & S_IFMT) == S_IFREG)
 151 #endif
 152 #ifndef S_ISDIR
 153 #define S_ISDIR(mode)   (((mode) & S_IFMT) == S_IFDIR)
 154 #endif
 155
 156
 157 #if     (defined (STDC_HEADERS) || defined (__GNU_LIBRARY__))
 158 #include <stdlib.h>
 159 #include <string.h>
 160 #define ANSI_STRING
 161 #else   /* No standard headers.  */
 162
 163 #ifdef HAVE_STRING_H
 164 #include <string.h>
 165 #define ANSI_STRING
 166 #else
 167 #include <strings.h>
 168 #endif
 169 #ifdef  HAVE_MEMORY_H
 170 #include <memory.h>
 171 #endif
 172
 173 extern char *malloc (), *realloc ();
 174 extern void free ();
 175
 176 extern void qsort ();
 177 extern void abort (), exit ();
 178
 179 #endif  /* Standard headers.  */
 180
 181 #ifdef  ANSI_STRING
 182
 183 #ifndef index
 184 #define index(s, c)     strchr((s), (c))
 185 #endif
 186 #ifndef rindex
 187 #define rindex(s, c)    strrchr((s), (c))
 188 #endif
 189
 190 #ifndef bcmp
 191 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 192 #endif
 193 #ifndef bzero
 194 #define bzero(s, n)     memset ((s), 0, (n))
 195 #endif
 196 #ifndef bcopy
 197 #define bcopy(s, d, n)  memcpy ((d), (s), (n))
 198 #endif
 199
 200 #else   /* Not ANSI_STRING.  */
 201
 202 #ifndef bcmp
 203 extern int bcmp ();
 204 #endif
 205 #ifndef bzero
 206 extern void bzero ();
 207 #endif
 208 #ifndef bcopy
 209 extern void bcopy ();
 210 #endif
 211
 212 #endif  /* ANSI_STRING.  */
 213 #undef  ANSI_STRING
 214
 215 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 216 #undef  strerror
 217
 218 #ifndef ANSI_STRING
 219 extern char *strerror ();
 220 #endif
 221
 222
 223 #ifdef  __GNUC__
 224 #undef  alloca
 225 #define alloca(n)       __builtin_alloca (n)
 226 #else   /* Not GCC.  */
 227 #ifdef  HAVE_ALLOCA_H
 228 #include <alloca.h>
 229 #else   /* Not HAVE_ALLOCA_H.  */
 230 #ifndef _AIX
 231 extern char *alloca ();
 232 #endif  /* Not AIX.  */
 233 #endif  /* HAVE_ALLOCA_H.  */
 234 #endif  /* GCC.  */
 235
 236 #ifndef iAPX286
 237 #define streq(a, b) \
 238   ((a) == (b) || \
 239    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 240 #else
 241 /* Buggy compiler can't handle this.  */
 242 #define streq(a, b) (strcmp ((a), (b)) == 0)
 243 #endif
 244
 245 /* Add to VAR the hashing value of C, one character in a name.  */
 246 #define HASH(var, c) \
 247   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 248
 249 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 250 #define ENUM_BITFIELD(bits)     :bits
 251 #else
 252 #define ENUM_BITFIELD(bits)
 253 #endif
 254
 255 extern void die ();
 256 extern void message (), fatal (), error ();
 257 extern void makefile_error (), makefile_fatal ();
 258 extern void pfatal_with_name (), perror_with_name ();
 259 extern char *savestring (), *concat ();
 260 extern char *xmalloc (), *xrealloc ();
 261 extern char *find_next_token (), *next_token (), *end_of_token ();
 262 extern void collapse_continuations (), remove_comments ();
 263 extern char *sindex (), *lindex ();
 264 extern int alpha_compare ();
 265 extern void print_spaces ();
 266 extern struct dep *copy_dep_chain ();
 267 extern char *find_char_unquote (), *find_percent ();
 268
 269 #ifndef NO_ARCHIVES
 270 extern int ar_name ();
 271 extern void ar_parse_name ();
 272 extern int ar_touch ();
 273 extern time_t ar_member_date ();
 274 #endif
 275
 276 extern void dir_load ();
 277 extern int dir_file_exists_p (), file_exists_p (), file_impossible_p ();
 278 extern void file_impossible ();
 279 extern char *dir_name ();
 280
 281 extern void define_default_variables ();
 282 extern void set_default_suffixes (), install_default_suffix_rules ();
 283 extern void install_default_implicit_rules (), count_implicit_rule_limits ();
 284 extern void convert_to_pattern (), create_pattern_rule ();
 285
 286 extern void build_vpath_lists (), construct_vpath_list ();
 287 extern int vpath_search ();
 288
 289 extern void construct_include_path ();
 290 extern void uniquize_deps ();
 291
 292 extern int update_goal_chain ();
 293 extern void notice_finished_file ();
 294
 295 extern void user_access (), make_access (), child_access ();
 296
 297
 298 #ifdef  HAVE_VFORK_H
 299 #include <vfork.h>
 300 #endif
 301
 302 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
 303    because such systems often declare the in header files anyway.  */
 304
 305 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION)
 306
 307 extern long int atol ();
 308 extern long int lseek ();
 309
 310 #endif  /* Not GNU C library or POSIX.  */
 311
 312 #ifdef  HAVE_GETCWD
 313 extern char *getcwd ();
 314 #else
 315 extern char *getwd ();
 316 #define getcwd(buf, len)        getwd (buf)
 317 #endif
 318
 319 extern char **environ;
 320
 321 extern char *reading_filename;
 322 extern unsigned int *reading_lineno_ptr;
 323
 324 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 325 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 326 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 327 extern int print_directory_flag, warn_undefined_variables_flag;
 328
 329 extern unsigned int job_slots;
 330 extern double max_load_average;
 331
 332 extern char *program;
 333 extern char *starting_directory;
 334 extern unsigned int makelevel;
 335 extern char *version_string, *remote_description;
 336
 337 extern unsigned int commands_started;
 338
 339 extern int handling_fatal_signal;
 340
 341
 342 #define DEBUGPR(msg) \
 343   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 344                        fflush (stdout); } while (0)