1 | /* Miscellaneous global declarations and portability cruft for GNU Make. |
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2 | Copyright (C) 1988,89,90,91,92,93,94,95,96,97,99 Free Software Foundation, Inc. |
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3 | This file is part of GNU Make. |
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4 | |
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5 | GNU Make is free software; you can redistribute it and/or modify |
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6 | it under the terms of the GNU General Public License as published by |
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7 | the Free Software Foundation; either version 2, or (at your option) |
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8 | any later version. |
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9 | |
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10 | GNU Make is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | GNU General Public License for more details. |
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14 | |
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15 | You should have received a copy of the GNU General Public License |
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16 | along with GNU Make; see the file COPYING. If not, write to |
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17 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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18 | Boston, MA 02111-1307, USA. */ |
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19 | |
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20 | /* AIX requires this to be the first thing in the file. */ |
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21 | #if defined (_AIX) && !defined (__GNUC__) |
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22 | #pragma alloca |
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23 | #endif |
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24 | |
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25 | /* We use <config.h> instead of "config.h" so that a compilation |
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26 | using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h |
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27 | (which it would do because make.h was found in $srcdir). */ |
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28 | #include <config.h> |
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29 | #undef HAVE_CONFIG_H |
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30 | #define HAVE_CONFIG_H 1 |
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31 | |
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32 | |
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33 | /* Use prototypes if available. */ |
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34 | #if defined (__cplusplus) || (defined (__STDC__) && __STDC__) |
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35 | # undef PARAMS |
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36 | # define PARAMS(protos) protos |
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37 | #else /* Not C++ or ANSI C. */ |
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38 | # undef PARAMS |
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39 | # define PARAMS(protos) () |
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40 | #endif /* C++ or ANSI C. */ |
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41 | |
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42 | /* Specify we want GNU source code. This must be defined before any |
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43 | system headers are included. */ |
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44 | |
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45 | #define _GNU_SOURCE 1 |
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46 | |
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47 | /* Include libintl.h, if it was found: we don't even look for it unless we |
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48 | want to use the system's gettext(). If not, use the included gettext.h. */ |
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49 | |
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50 | #ifdef HAVE_LIBINTL_H |
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51 | # include <libintl.h> |
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52 | # ifdef HAVE_LOCALE_H |
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53 | # include <locale.h> |
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54 | # endif |
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55 | #else |
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56 | # include "gettext.h" |
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57 | #endif |
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58 | |
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59 | #ifndef gettext_noop |
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60 | /* For automatic extraction of messages sometimes no real translation is |
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61 | needed. Instead the string itself is the result. */ |
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62 | # define gettext_noop(Str) (Str) |
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63 | #endif |
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64 | |
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65 | #define _(Text) gettext (Text) |
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66 | #define N_(Text) gettext_noop (Text) |
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67 | |
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68 | |
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69 | #if !HAVE_SETLOCALE |
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70 | # define setlocale(Category, Locale) /* empty */ |
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71 | #endif |
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72 | |
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73 | |
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74 | #ifdef CRAY |
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75 | /* This must happen before #include <signal.h> so |
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76 | that the declaration therein is changed. */ |
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77 | # define signal bsdsignal |
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78 | #endif |
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79 | |
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80 | /* If we're compiling for the dmalloc debugger, turn off string inlining. */ |
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81 | #if defined(HAVE_DMALLOC_H) && defined(__GNUC__) |
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82 | # define __NO_STRING_INLINES |
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83 | #endif |
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84 | |
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85 | #include <sys/types.h> |
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86 | #include <sys/stat.h> |
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87 | #include <signal.h> |
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88 | #include <stdio.h> |
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89 | #include <ctype.h> |
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90 | #ifdef HAVE_SYS_TIMEB_H |
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91 | /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs |
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92 | unless <sys/timeb.h> has been included first. Does every system have a |
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93 | <sys/timeb.h>? If any does not, configure should check for it. */ |
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94 | # include <sys/timeb.h> |
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95 | #endif |
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96 | |
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97 | #if TIME_WITH_SYS_TIME |
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98 | # include <sys/time.h> |
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99 | # include <time.h> |
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100 | #else |
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101 | # if HAVE_SYS_TIME_H |
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102 | # include <sys/time.h> |
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103 | # else |
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104 | # include <time.h> |
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105 | # endif |
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106 | #endif |
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107 | |
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108 | #include <errno.h> |
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109 | |
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110 | #ifndef errno |
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111 | extern int errno; |
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112 | #endif |
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113 | |
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114 | /* A shortcut for EINTR checking. Note you should be careful when negating |
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115 | this! That might not mean what you want if EINTR is not available. */ |
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116 | #ifdef EINTR |
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117 | # define EINTR_SET (errno == EINTR) |
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118 | #else |
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119 | # define EINTR_SET (0) |
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120 | #endif |
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121 | |
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122 | #ifndef isblank |
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123 | # define isblank(c) ((c) == ' ' || (c) == '\t') |
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124 | #endif |
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125 | |
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126 | #ifdef HAVE_UNISTD_H |
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127 | # include <unistd.h> |
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128 | /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get |
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129 | POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */ |
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130 | # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS) |
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131 | # define POSIX 1 |
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132 | # endif |
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133 | #endif |
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134 | |
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135 | /* Some systems define _POSIX_VERSION but are not really POSIX.1. */ |
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136 | #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386))) |
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137 | # undef POSIX |
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138 | #endif |
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139 | |
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140 | #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE) |
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141 | # define POSIX 1 |
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142 | #endif |
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143 | |
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144 | #ifndef RETSIGTYPE |
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145 | # define RETSIGTYPE void |
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146 | #endif |
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147 | |
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148 | #ifndef sigmask |
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149 | # define sigmask(sig) (1 << ((sig) - 1)) |
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150 | #endif |
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151 | |
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152 | #ifdef HAVE_LIMITS_H |
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153 | # include <limits.h> |
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154 | #endif |
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155 | #ifdef HAVE_SYS_PARAM_H |
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156 | # include <sys/param.h> |
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157 | #endif |
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158 | |
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159 | #ifndef PATH_MAX |
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160 | # ifndef POSIX |
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161 | # define PATH_MAX MAXPATHLEN |
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162 | # endif |
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163 | #endif |
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164 | #ifndef MAXPATHLEN |
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165 | # define MAXPATHLEN 1024 |
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166 | #endif |
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167 | |
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168 | #ifdef PATH_MAX |
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169 | # define GET_PATH_MAX PATH_MAX |
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170 | # define PATH_VAR(var) char var[PATH_MAX] |
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171 | #else |
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172 | # define NEED_GET_PATH_MAX 1 |
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173 | # define GET_PATH_MAX (get_path_max ()) |
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174 | # define PATH_VAR(var) char *var = (char *) alloca (GET_PATH_MAX) |
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175 | extern unsigned int get_path_max PARAMS ((void)); |
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176 | #endif |
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177 | |
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178 | #ifndef CHAR_BIT |
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179 | # define CHAR_BIT 8 |
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180 | #endif |
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181 | |
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182 | /* Nonzero if the integer type T is signed. */ |
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183 | #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0) |
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184 | |
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185 | /* The minimum and maximum values for the integer type T. |
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186 | Use ~ (t) 0, not -1, for portability to 1's complement hosts. */ |
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187 | #define INTEGER_TYPE_MINIMUM(t) \ |
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188 | (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)) |
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189 | #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t)) |
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190 | |
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191 | #ifndef CHAR_MAX |
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192 | # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char) |
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193 | #endif |
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194 | |
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195 | #ifdef STAT_MACROS_BROKEN |
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196 | # ifdef S_ISREG |
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197 | # undef S_ISREG |
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198 | # endif |
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199 | # ifdef S_ISDIR |
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200 | # undef S_ISDIR |
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201 | # endif |
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202 | #endif /* STAT_MACROS_BROKEN. */ |
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203 | |
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204 | #ifndef S_ISREG |
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205 | # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) |
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206 | #endif |
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207 | #ifndef S_ISDIR |
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208 | # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) |
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209 | #endif |
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210 | |
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211 | #ifdef VMS |
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212 | # include <types.h> |
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213 | # include <unixlib.h> |
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214 | # include <unixio.h> |
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215 | # include <perror.h> |
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216 | #endif |
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217 | |
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218 | #ifndef __attribute__ |
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219 | /* This feature is available in gcc versions 2.5 and later. */ |
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220 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ |
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221 | # define __attribute__(x) |
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222 | # endif |
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223 | /* The __-protected variants of `format' and `printf' attributes |
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224 | are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */ |
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225 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) |
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226 | # define __format__ format |
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227 | # define __printf__ printf |
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228 | # endif |
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229 | #endif |
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230 | |
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231 | #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) |
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232 | # include <stdlib.h> |
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233 | # include <string.h> |
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234 | # define ANSI_STRING 1 |
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235 | #else /* No standard headers. */ |
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236 | # ifdef HAVE_STRING_H |
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237 | # include <string.h> |
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238 | # define ANSI_STRING 1 |
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239 | # else |
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240 | # include <strings.h> |
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241 | # endif |
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242 | # ifdef HAVE_MEMORY_H |
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243 | # include <memory.h> |
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244 | # endif |
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245 | # ifdef HAVE_STDLIB_H |
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246 | # include <stdlib.h> |
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247 | # else |
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248 | extern char *malloc PARAMS ((int)); |
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249 | extern char *realloc PARAMS ((char *, int)); |
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250 | extern void free PARAMS ((char *)); |
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251 | |
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252 | extern void abort PARAMS ((void)) __attribute__ ((noreturn)); |
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253 | extern void exit PARAMS ((int)) __attribute__ ((noreturn)); |
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254 | # endif /* HAVE_STDLIB_H. */ |
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255 | |
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256 | #endif /* Standard headers. */ |
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257 | |
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258 | #ifdef ANSI_STRING |
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259 | |
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260 | # ifndef bcmp |
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261 | # define bcmp(s1, s2, n) memcmp ((s1), (s2), (n)) |
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262 | # endif |
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263 | # ifndef bzero |
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264 | # define bzero(s, n) memset ((s), 0, (n)) |
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265 | # endif |
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266 | # if defined(HAVE_MEMMOVE) && !defined(bcopy) |
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267 | # define bcopy(s, d, n) memmove ((d), (s), (n)) |
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268 | # endif |
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269 | |
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270 | #else /* Not ANSI_STRING. */ |
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271 | |
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272 | # ifndef HAVE_STRCHR |
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273 | # define strchr(s, c) index((s), (c)) |
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274 | # define strrchr(s, c) rindex((s), (c)) |
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275 | # endif |
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276 | |
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277 | # ifndef bcmp |
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278 | extern int bcmp PARAMS ((const char *, const char *, int)); |
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279 | # endif |
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280 | # ifndef bzero |
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281 | extern void bzero PARAMS ((char *, int)); |
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282 | #endif |
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283 | # ifndef bcopy |
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284 | extern void bcopy PARAMS ((const char *b1, char *b2, int)); |
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285 | # endif |
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286 | |
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287 | #endif /* ANSI_STRING. */ |
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288 | #undef ANSI_STRING |
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289 | |
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290 | /* SCO Xenix has a buggy macro definition in <string.h>. */ |
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291 | #undef strerror |
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292 | |
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293 | #if !defined(ANSI_STRING) && !defined(__DECC) |
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294 | extern char *strerror PARAMS ((int errnum)); |
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295 | #endif |
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296 | |
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297 | #ifdef __GNUC__ |
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298 | # undef alloca |
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299 | # define alloca(n) __builtin_alloca (n) |
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300 | #else /* Not GCC. */ |
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301 | # ifdef HAVE_ALLOCA_H |
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302 | # include <alloca.h> |
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303 | # else /* Not HAVE_ALLOCA_H. */ |
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304 | # ifndef _AIX |
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305 | extern char *alloca (); |
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306 | # endif /* Not AIX. */ |
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307 | # endif /* HAVE_ALLOCA_H. */ |
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308 | #endif /* GCC. */ |
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309 | |
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310 | #if HAVE_INTTYPES_H |
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311 | # include <inttypes.h> |
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312 | #endif |
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313 | #define FILE_TIMESTAMP uintmax_t |
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314 | |
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315 | /* ISDIGIT offers the following features: |
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316 | - Its arg may be any int or unsigned int; it need not be an unsigned char. |
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317 | - It's guaranteed to evaluate its argument exactly once. |
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318 | NOTE! Make relies on this behavior, don't change it! |
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319 | - It's typically faster. |
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320 | Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that |
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321 | only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless |
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322 | it's important to use the locale's definition of `digit' even when the |
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323 | host does not conform to Posix. */ |
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324 | #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) |
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325 | |
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326 | #ifndef iAPX286 |
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327 | # define streq(a, b) \ |
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328 | ((a) == (b) || \ |
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329 | (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1)))) |
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330 | # ifdef HAVE_CASE_INSENSITIVE_FS |
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331 | /* This is only used on Windows/DOS platforms, so we assume strcmpi(). */ |
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332 | # define strieq(a, b) \ |
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333 | ((a) == (b) \ |
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334 | || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \ |
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335 | && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1)))) |
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336 | # else |
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337 | # define strieq(a, b) streq(a, b) |
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338 | # endif |
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339 | #else |
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340 | /* Buggy compiler can't handle this. */ |
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341 | # define streq(a, b) (strcmp ((a), (b)) == 0) |
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342 | # define strieq(a, b) (strcmp ((a), (b)) == 0) |
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343 | #endif |
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344 | #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0) |
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345 | #ifdef VMS |
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346 | extern int strcmpi (const char *,const char *); |
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347 | #endif |
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348 | |
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349 | /* Add to VAR the hashing value of C, one character in a name. */ |
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350 | #define HASH(var, c) \ |
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351 | ((var += (c)), (var = ((var) << 7) + ((var) >> 20))) |
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352 | #ifdef HAVE_CASE_INSENSITIVE_FS /* Fold filenames */ |
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353 | # define HASHI(var, c) \ |
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354 | ((var += tolower((unsigned char)(c))), (var = ((var) << 7) + ((var) >> 20))) |
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355 | #else |
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356 | # define HASHI(var, c) HASH(var,c) |
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357 | #endif |
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358 | |
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359 | #if defined(__GNUC__) || defined(ENUM_BITFIELDS) |
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360 | # define ENUM_BITFIELD(bits) :bits |
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361 | #else |
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362 | # define ENUM_BITFIELD(bits) |
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363 | #endif |
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364 | |
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365 | #if defined(__MSDOS__) || defined(WINDOWS32) |
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366 | # define PATH_SEPARATOR_CHAR ';' |
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367 | #else |
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368 | # if defined(VMS) |
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369 | # define PATH_SEPARATOR_CHAR ',' |
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370 | # else |
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371 | # define PATH_SEPARATOR_CHAR ':' |
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372 | # endif |
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373 | #endif |
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374 | |
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375 | #ifdef WINDOWS32 |
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376 | # include <fcntl.h> |
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377 | # include <malloc.h> |
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378 | # define pipe(p) _pipe(p, 512, O_BINARY) |
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379 | # define kill(pid,sig) w32_kill(pid,sig) |
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380 | |
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381 | extern void sync_Path_environment(void); |
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382 | extern int kill(int pid, int sig); |
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383 | extern int safe_stat(char *file, struct stat *sb); |
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384 | extern char *end_of_token_w32(char *s, char stopchar); |
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385 | extern int find_and_set_default_shell(char *token); |
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386 | |
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387 | /* indicates whether or not we have Bourne shell */ |
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388 | extern int no_default_sh_exe; |
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389 | |
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390 | /* is default_shell unixy? */ |
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391 | extern int unixy_shell; |
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392 | #endif /* WINDOWS32 */ |
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393 | |
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394 | struct floc |
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395 | { |
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396 | char *filenm; |
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397 | unsigned long lineno; |
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398 | }; |
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399 | #define NILF ((struct floc *)0) |
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400 | |
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401 | |
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402 | /* Fancy processing for variadic functions in both ANSI and pre-ANSI |
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403 | compilers. */ |
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404 | #if defined __STDC__ && __STDC__ |
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405 | extern void message (int prefix, const char *fmt, ...) |
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406 | __attribute__ ((__format__ (__printf__, 2, 3))); |
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407 | extern void error (const struct floc *flocp, const char *fmt, ...) |
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408 | __attribute__ ((__format__ (__printf__, 2, 3))); |
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409 | extern void fatal (const struct floc *flocp, const char *fmt, ...) |
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410 | __attribute__ ((noreturn, __format__ (__printf__, 2, 3))); |
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411 | #else |
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412 | extern void message (); |
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413 | extern void error (); |
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414 | extern void fatal (); |
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415 | #endif |
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416 | |
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417 | extern void die PARAMS ((int)) __attribute__ ((noreturn)); |
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418 | extern void log_working_directory PARAMS ((int)); |
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419 | extern void pfatal_with_name PARAMS ((char *)) __attribute__ ((noreturn)); |
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420 | extern void perror_with_name PARAMS ((char *, char *)); |
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421 | extern char *savestring PARAMS ((const char *, unsigned int)); |
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422 | extern char *concat PARAMS ((char *, char *, char *)); |
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423 | extern char *xmalloc PARAMS ((unsigned int)); |
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424 | extern char *xrealloc PARAMS ((char *, unsigned int)); |
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425 | extern char *xstrdup PARAMS ((const char *)); |
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426 | extern char *find_next_token PARAMS ((char **, unsigned int *)); |
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427 | extern char *next_token PARAMS ((char *)); |
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428 | extern char *end_of_token PARAMS ((char *)); |
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429 | extern void collapse_continuations PARAMS ((char *)); |
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430 | extern void remove_comments PARAMS((char *)); |
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431 | extern char *sindex PARAMS ((const char *, unsigned int, \ |
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432 | const char *, unsigned int)); |
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433 | extern char *lindex PARAMS ((const char *, const char *, int)); |
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434 | extern int alpha_compare PARAMS ((const void *, const void *)); |
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435 | extern void print_spaces PARAMS ((unsigned int)); |
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436 | extern char *find_char_unquote PARAMS ((char *, char *, int)); |
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437 | extern char *find_percent PARAMS ((char *)); |
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438 | extern FILE *open_tmpfile PARAMS ((char **, const char *)); |
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439 | |
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440 | #ifndef NO_ARCHIVES |
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441 | extern int ar_name PARAMS ((char *)); |
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442 | extern void ar_parse_name PARAMS ((char *, char **, char **)); |
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443 | extern int ar_touch PARAMS ((char *)); |
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444 | extern time_t ar_member_date PARAMS ((char *)); |
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445 | #endif |
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446 | |
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447 | extern int dir_file_exists_p PARAMS ((char *, char *)); |
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448 | extern int file_exists_p PARAMS ((char *)); |
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449 | extern int file_impossible_p PARAMS ((char *)); |
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450 | extern void file_impossible PARAMS ((char *)); |
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451 | extern char *dir_name PARAMS ((char *)); |
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452 | |
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453 | extern void define_default_variables PARAMS ((void)); |
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454 | extern void set_default_suffixes PARAMS ((void)); |
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455 | extern void install_default_suffix_rules PARAMS ((void)); |
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456 | extern void install_default_implicit_rules PARAMS ((void)); |
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457 | |
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458 | extern void build_vpath_lists PARAMS ((void)); |
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459 | extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath)); |
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460 | extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr)); |
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461 | extern int gpath_search PARAMS ((char *file, int len)); |
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462 | |
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463 | extern void construct_include_path PARAMS ((char **arg_dirs)); |
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464 | |
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465 | extern void user_access PARAMS ((void)); |
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466 | extern void make_access PARAMS ((void)); |
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467 | extern void child_access PARAMS ((void)); |
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468 | |
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469 | #ifdef HAVE_VFORK_H |
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470 | # include <vfork.h> |
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471 | #endif |
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472 | |
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473 | /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION, |
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474 | because such systems often declare them in header files anyway. */ |
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475 | |
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476 | #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32) |
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477 | |
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478 | extern long int atol (); |
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479 | # ifndef VMS |
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480 | extern long int lseek (); |
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481 | # endif |
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482 | |
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483 | #endif /* Not GNU C library or POSIX. */ |
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484 | |
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485 | #ifdef HAVE_GETCWD |
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486 | # if !defined(VMS) && !defined(__DECC) |
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487 | extern char *getcwd (); |
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488 | #endif |
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489 | #else |
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490 | extern char *getwd (); |
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491 | # define getcwd(buf, len) getwd (buf) |
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492 | #endif |
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493 | |
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494 | extern const struct floc *reading_file; |
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495 | |
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496 | extern char **environ; |
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497 | |
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498 | extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag; |
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499 | extern int print_data_base_flag, question_flag, touch_flag; |
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500 | extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag; |
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501 | extern int print_version_flag, print_directory_flag; |
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502 | extern int warn_undefined_variables_flag, posix_pedantic, not_parallel; |
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503 | extern int clock_skew_detected; |
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504 | |
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505 | /* can we run commands via 'sh -c xxx' or must we use batch files? */ |
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506 | extern int batch_mode_shell; |
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507 | |
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508 | extern unsigned int job_slots; |
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509 | extern int job_fds[2]; |
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510 | extern int job_rfd; |
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511 | #ifndef NO_FLOAT |
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512 | extern double max_load_average; |
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513 | #else |
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514 | extern int max_load_average; |
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515 | #endif |
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516 | |
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517 | extern char *program; |
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518 | extern char *starting_directory; |
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519 | extern unsigned int makelevel; |
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520 | extern char *version_string, *remote_description; |
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521 | |
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522 | extern unsigned int commands_started; |
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523 | |
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524 | extern int handling_fatal_signal; |
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525 | |
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526 | |
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527 | #ifndef MIN |
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528 | #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b)) |
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529 | #endif |
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530 | #ifndef MAX |
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531 | #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b)) |
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532 | #endif |
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533 | |
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534 | #ifdef VMS |
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535 | # ifndef EXIT_FAILURE |
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536 | # define EXIT_FAILURE 3 |
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537 | # endif |
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538 | # ifndef EXIT_SUCCESS |
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539 | # define EXIT_SUCCESS 1 |
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540 | # endif |
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541 | # ifndef EXIT_TROUBLE |
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542 | # define EXIT_TROUBLE 2 |
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543 | # endif |
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544 | #else |
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545 | # ifndef EXIT_FAILURE |
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546 | # define EXIT_FAILURE 2 |
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547 | # endif |
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548 | # ifndef EXIT_SUCCESS |
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549 | # define EXIT_SUCCESS 0 |
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550 | # endif |
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551 | # ifndef EXIT_TROUBLE |
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552 | # define EXIT_TROUBLE 1 |
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553 | # endif |
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554 | #endif |
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555 | |
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556 | /* Set up heap debugging library dmalloc. */ |
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557 | |
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558 | #ifdef HAVE_DMALLOC_H |
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559 | #include <dmalloc.h> |
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560 | #endif |
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