1 | /* Internals of variables for GNU Make.
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2 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
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4 | Foundation, Inc.
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5 | This file is part of GNU Make.
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6 |
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7 | GNU Make is free software; you can redistribute it and/or modify it under the
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8 | terms of the GNU General Public License as published by the Free Software
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9 | Foundation; either version 2, or (at your option) any later version.
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10 |
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11 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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13 | A PARTICULAR PURPOSE. See the 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 along with
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16 | GNU Make; see the file COPYING. If not, write to the Free Software
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17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
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18 |
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19 | #include "make.h"
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20 |
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21 | #include <assert.h>
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22 |
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23 | #include "dep.h"
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24 | #include "filedef.h"
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25 | #include "job.h"
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26 | #include "commands.h"
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27 | #include "variable.h"
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28 | #include "rule.h"
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29 | #ifdef WINDOWS32
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30 | #include "pathstuff.h"
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31 | #endif
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32 | #include "hash.h"
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33 | #ifdef KMK
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34 | # include "kbuild.h"
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35 | #endif
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36 |
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37 | /* Chain of all pattern-specific variables. */
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38 |
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39 | static struct pattern_var *pattern_vars;
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40 |
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41 | /* Pointer to last struct in the chain, so we can add onto the end. */
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42 |
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43 | static struct pattern_var *last_pattern_var;
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44 |
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45 | /* Create a new pattern-specific variable struct. */
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46 |
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47 | struct pattern_var *
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48 | create_pattern_var (const char *target, const char *suffix)
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49 | {
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50 | register struct pattern_var *p = xmalloc (sizeof (struct pattern_var));
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51 |
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52 | if (last_pattern_var != 0)
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53 | last_pattern_var->next = p;
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54 | else
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55 | pattern_vars = p;
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56 | last_pattern_var = p;
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57 | p->next = 0;
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58 |
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59 | p->target = target;
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60 | p->len = strlen (target);
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61 | p->suffix = suffix + 1;
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62 |
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63 | return p;
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64 | }
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65 |
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66 | /* Look up a target in the pattern-specific variable list. */
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67 |
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68 | static struct pattern_var *
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69 | lookup_pattern_var (struct pattern_var *start, const char *target)
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70 | {
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71 | struct pattern_var *p;
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72 | unsigned int targlen = strlen(target);
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73 |
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74 | for (p = start ? start->next : pattern_vars; p != 0; p = p->next)
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75 | {
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76 | const char *stem;
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77 | unsigned int stemlen;
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78 |
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79 | if (p->len > targlen)
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80 | /* It can't possibly match. */
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81 | continue;
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82 |
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83 | /* From the lengths of the filename and the pattern parts,
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84 | find the stem: the part of the filename that matches the %. */
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85 | stem = target + (p->suffix - p->target - 1);
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86 | stemlen = targlen - p->len + 1;
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87 |
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88 | /* Compare the text in the pattern before the stem, if any. */
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89 | if (stem > target && !strneq (p->target, target, stem - target))
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90 | continue;
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91 |
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92 | /* Compare the text in the pattern after the stem, if any.
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93 | We could test simply using streq, but this way we compare the
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94 | first two characters immediately. This saves time in the very
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95 | common case where the first character matches because it is a
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96 | period. */
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97 | if (*p->suffix == stem[stemlen]
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98 | && (*p->suffix == '\0' || streq (&p->suffix[1], &stem[stemlen+1])))
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99 | break;
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100 | }
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101 |
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102 | return p;
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103 | }
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104 | |
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105 |
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106 | /* Hash table of all global variable definitions. */
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107 |
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108 | #ifdef VARIABLE_HASH
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109 | # ifdef _MSC_VER
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110 | # define inline _inline
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111 | typedef signed int int32_t;
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112 | typedef signed short int int16_t;
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113 | # endif
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114 | static inline unsigned long variable_hash_2i(register const unsigned char *var, register int length)
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115 | {
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116 | register unsigned int hash = 0;
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117 | var += length;
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118 | switch (length)
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119 | {
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120 | default:
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121 | case 16: hash = *--var + (hash << 6) + (hash << 16) - hash;
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122 | case 15: hash = *--var + (hash << 6) + (hash << 16) - hash;
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123 | case 14: hash = *--var + (hash << 6) + (hash << 16) - hash;
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124 | case 13: hash = *--var + (hash << 6) + (hash << 16) - hash;
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125 | case 12: hash = *--var + (hash << 6) + (hash << 16) - hash;
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126 | case 11: hash = *--var + (hash << 6) + (hash << 16) - hash;
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127 | case 10: hash = *--var + (hash << 6) + (hash << 16) - hash;
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128 | case 9: hash = *--var + (hash << 6) + (hash << 16) - hash;
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129 | case 8: hash = *--var + (hash << 6) + (hash << 16) - hash;
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130 | case 7: hash = *--var + (hash << 6) + (hash << 16) - hash;
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131 | case 6: hash = *--var + (hash << 6) + (hash << 16) - hash;
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132 | case 5: hash = *--var + (hash << 6) + (hash << 16) - hash;
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133 | case 4: hash = *--var + (hash << 6) + (hash << 16) - hash;
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134 | case 3: hash = *--var + (hash << 6) + (hash << 16) - hash;
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135 | case 2: hash = *--var + (hash << 6) + (hash << 16) - hash;
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136 | case 1: hash = *--var + (hash << 6) + (hash << 16) - hash;
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137 | case 0:
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138 | break;
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139 | }
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140 | return hash;
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141 | }
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142 |
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143 | static inline unsigned long variable_hash_1i(register const unsigned char *var, register int length)
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144 | {
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145 | register unsigned int hash = ((5381 << 5) + 5381) + *var;
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146 | switch (length)
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147 | {
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148 | default:
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149 | case 8: hash = ((hash << 5) + hash) + var[7];
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150 | case 7: hash = ((hash << 5) + hash) + var[6];
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151 | case 6: hash = ((hash << 5) + hash) + var[5];
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152 | case 5: hash = ((hash << 5) + hash) + var[4];
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153 | case 4: hash = ((hash << 5) + hash) + var[3];
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154 | case 3: hash = ((hash << 5) + hash) + var[2];
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155 | case 2: hash = ((hash << 5) + hash) + var[1];
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156 | case 1: return hash;
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157 | case 0: return 5381; /* shouldn't happen */
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158 | }
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159 | }
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160 | #endif /* CONFIG_WITH_OPTIMIZATION_HACKS */
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161 |
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162 | static unsigned long
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163 | variable_hash_1 (const void *keyv)
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164 | {
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165 | struct variable const *key = (struct variable const *) keyv;
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166 | #ifdef VARIABLE_HASH /* bird */
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167 | # ifdef VARIABLE_HASH_STRICT
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168 | if (key->hash1 != variable_hash_1i (key->name, key->length))
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169 | __asm__("int3");
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170 | if (key->hash2 && key->hash2 != variable_hash_2i (key->name, key->length))
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171 | __asm__("int3");
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172 | # endif
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173 | return key->hash1;
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174 | #else
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175 | # ifdef CONFIG_WITH_OPTIMIZATION_HACKS
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176 | return variable_hash_1i (key->name, key->length);
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177 | # else
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178 | return_STRING_N_HASH_1 (key->name, key->length);
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179 | # endif
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180 | #endif
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181 | }
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182 |
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183 | static unsigned long
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184 | variable_hash_2 (const void *keyv)
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185 | {
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186 | #ifdef VARIABLE_HASH /* bird */
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187 | struct variable *key = (struct variable *) keyv;
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188 | if (!key->hash2)
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189 | key->hash2 = variable_hash_2i (key->name, key->length);
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190 | return key->hash2;
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191 | #else
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192 | struct variable const *key = (struct variable const *) keyv;
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193 | # ifdef CONFIG_WITH_OPTIMIZATION_HACKS
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194 | return variable_hash_2i (key->name, key->length);
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195 | # else
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196 | return_STRING_N_HASH_2 (key->name, key->length);
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197 | # endif
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198 | #endif
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199 | }
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200 |
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201 | static int
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202 | variable_hash_cmp (const void *xv, const void *yv)
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203 | {
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204 | struct variable const *x = (struct variable const *) xv;
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205 | struct variable const *y = (struct variable const *) yv;
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206 | int result = x->length - y->length;
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207 | if (result)
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208 | return result;
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209 | #ifdef VARIABLE_HASH_STRICT /* bird */
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210 | if (x->hash1 != variable_hash_1i (x->name, x->length))
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211 | __asm__("int3");
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212 | if (x->hash2 && x->hash2 != variable_hash_2i (x->name, x->length))
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213 | __asm__("int3");
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214 | if (y->hash1 != variable_hash_1i (y->name, y->length))
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215 | __asm__("int3");
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216 | if (y->hash2 && y->hash2 != variable_hash_2i (y->name, y->length))
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217 | __asm__("int3");
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218 | #endif
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219 | #ifdef VARIABLE_HASH
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220 | /* hash 1 */
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221 | result = x->hash1 - y->hash1;
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222 | if (result)
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223 | return result;
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224 | #endif
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225 | #ifdef CONFIG_WITH_OPTIMIZATION_HACKS /* bird: speed */
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226 | {
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227 | const char *xs = x->name;
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228 | const char *ys = y->name;
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229 | switch (x->length)
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230 | {
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231 | case 8:
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232 | result = *(int32_t*)(xs + 4) - *(int32_t*)(ys + 4);
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233 | if (result)
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234 | return result;
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235 | return *(int32_t*)xs - *(int32_t*)ys;
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236 | case 7:
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237 | result = xs[6] - ys[6];
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238 | if (result)
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239 | return result;
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240 | case 6:
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241 | result = *(int32_t*)xs - *(int32_t*)ys;
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242 | if (result)
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243 | return result;
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244 | return *(int16_t*)(xs + 4) - *(int16_t*)(ys + 4);
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245 | case 5:
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246 | result = xs[4] - ys[4];
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247 | if (result)
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248 | return result;
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249 | case 4:
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250 | return *(int32_t*)xs - *(int32_t*)ys;
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251 | case 3:
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252 | result = xs[2] - ys[2];
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253 | if (result)
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254 | return result;
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255 | case 2:
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256 | return *(int16_t*)xs - *(int16_t*)ys;
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257 | case 1:
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258 | return *xs - *ys;
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259 | case 0:
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260 | return 0;
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261 | }
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262 | }
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263 | #endif /* CONFIG_WITH_OPTIMIZATION_HACKS */
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264 | #ifdef VARIABLE_HASH
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265 | /* hash 2 */
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266 | if (!x->hash2)
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267 | ((struct variable *)x)->hash2 = variable_hash_2i (x->name, x->length);
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268 | if (!y->hash2)
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269 | ((struct variable *)y)->hash2 = variable_hash_2i (y->name, y->length);
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270 | result = x->hash2 - y->hash2;
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271 | if (result)
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272 | return result;
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273 | #endif
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274 | #ifdef CONFIG_WITH_OPTIMIZATION_HACKS
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275 | return memcmp (x->name, y->name, x->length);
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276 | #else
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277 | return_STRING_N_COMPARE (x->name, y->name, x->length);
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278 | #endif
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279 | }
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280 |
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281 | #ifndef VARIABLE_BUCKETS
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282 | # ifdef KMK /* Move to Makefile.kmk? */
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283 | # define VARIABLE_BUCKETS 16384
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284 | # else /*!KMK*/
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285 | #define VARIABLE_BUCKETS 523
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286 | # endif /*!KMK*/
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287 | #endif
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288 | #ifndef PERFILE_VARIABLE_BUCKETS
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289 | #define PERFILE_VARIABLE_BUCKETS 23
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290 | #endif
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291 | #ifndef SMALL_SCOPE_VARIABLE_BUCKETS
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292 | #define SMALL_SCOPE_VARIABLE_BUCKETS 13
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293 | #endif
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294 |
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295 | static struct variable_set global_variable_set;
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296 | static struct variable_set_list global_setlist
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297 | = { 0, &global_variable_set };
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298 | struct variable_set_list *current_variable_set_list = &global_setlist;
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299 | |
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300 |
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301 | /* Implement variables. */
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302 |
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303 | void
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304 | init_hash_global_variable_set (void)
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305 | {
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306 | hash_init (&global_variable_set.table, VARIABLE_BUCKETS,
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307 | variable_hash_1, variable_hash_2, variable_hash_cmp);
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308 | }
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309 |
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310 | /* Define variable named NAME with value VALUE in SET. VALUE is copied.
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311 | LENGTH is the length of NAME, which does not need to be null-terminated.
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312 | ORIGIN specifies the origin of the variable (makefile, command line
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313 | or environment).
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314 | If RECURSIVE is nonzero a flag is set in the variable saying
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315 | that it should be recursively re-expanded. */
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316 |
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317 | #ifdef CONFIG_WITH_VALUE_LENGTH
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318 | struct variable *
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319 | define_variable_in_set (const char *name, unsigned int length,
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320 | const char *value, unsigned int value_length, int duplicate_value,
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321 | enum variable_origin origin, int recursive,
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322 | struct variable_set *set, const struct floc *flocp)
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323 | #else
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324 | struct variable *
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325 | define_variable_in_set (const char *name, unsigned int length,
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326 | const char *value, enum variable_origin origin,
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327 | int recursive, struct variable_set *set,
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328 | const struct floc *flocp)
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329 | #endif
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330 | {
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331 | struct variable *v;
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332 | struct variable **var_slot;
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333 | struct variable var_key;
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334 |
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335 | if (set == NULL)
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336 | set = &global_variable_set;
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337 |
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338 | var_key.name = (char *) name;
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339 | var_key.length = length;
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340 | #ifdef VARIABLE_HASH /* bird */
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341 | var_key.hash1 = variable_hash_1i (name, length);
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342 | var_key.hash2 = 0;
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343 | #endif
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344 | var_slot = (struct variable **) hash_find_slot (&set->table, &var_key);
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345 |
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346 | if (env_overrides && origin == o_env)
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347 | origin = o_env_override;
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348 |
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349 | v = *var_slot;
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350 | if (! HASH_VACANT (v))
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351 | {
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352 | if (env_overrides && v->origin == o_env)
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353 | /* V came from in the environment. Since it was defined
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354 | before the switches were parsed, it wasn't affected by -e. */
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355 | v->origin = o_env_override;
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356 |
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357 | /* A variable of this name is already defined.
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358 | If the old definition is from a stronger source
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359 | than this one, don't redefine it. */
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360 | if ((int) origin >= (int) v->origin)
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361 | {
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362 | #ifdef CONFIG_WITH_VALUE_LENGTH
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363 | if (value_length == ~0U)
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364 | value_length = strlen (value);
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365 | else
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366 | assert (value_length == strlen (value));
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367 | if (!duplicate_value)
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368 | {
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369 | if (v->value != 0)
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370 | free (v->value);
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371 | v->value = (char *)value;
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372 | v->value_alloc_len = value_length + 1;
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373 | }
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374 | else
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375 | {
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376 | if ((unsigned int)v->value_alloc_len <= value_length)
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377 | {
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378 | free (v->value);
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379 | v->value_alloc_len = (value_length + 0x40) & ~0x3f;
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380 | v->value = xmalloc (v->value_alloc_len);
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381 | }
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382 | memcpy (v->value, value, value_length + 1);
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383 | }
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384 | v->value_length = value_length;
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385 | #else
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386 | if (v->value != 0)
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387 | free (v->value);
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388 | v->value = xstrdup (value);
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389 | #endif
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390 | if (flocp != 0)
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391 | v->fileinfo = *flocp;
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392 | else
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393 | v->fileinfo.filenm = 0;
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394 | v->origin = origin;
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395 | v->recursive = recursive;
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396 | }
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397 | return v;
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398 | }
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399 |
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400 | /* Create a new variable definition and add it to the hash table. */
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401 |
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402 | v = xmalloc (sizeof (struct variable));
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403 | v->name = savestring (name, length);
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404 | v->length = length;
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405 | #ifdef VARIABLE_HASH /* bird */
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406 | v->hash1 = variable_hash_1i (name, length);
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407 | v->hash2 = 0;
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408 | #endif
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409 | hash_insert_at (&set->table, v, var_slot);
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410 | #ifdef CONFIG_WITH_VALUE_LENGTH
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411 | if (value_length == ~0U)
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412 | value_length = strlen (value);
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413 | else
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414 | assert (value_length == strlen (value));
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415 | v->value_length = value_length;
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416 | if (!duplicate_value)
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417 | {
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418 | v->value_alloc_len = value_length + 1;
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419 | v->value = (char *)value;
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420 | }
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421 | else
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422 | {
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423 | v->value_alloc_len = (value_length + 32) & ~31;
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424 | v->value = xmalloc (v->value_alloc_len);
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425 | memcpy (v->value, value, value_length + 1);
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426 | }
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427 | #else
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428 | v->value = xstrdup (value);
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429 | #endif
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430 | if (flocp != 0)
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431 | v->fileinfo = *flocp;
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432 | else
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433 | v->fileinfo.filenm = 0;
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434 | v->origin = origin;
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435 | v->recursive = recursive;
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436 | v->special = 0;
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437 | v->expanding = 0;
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438 | v->exp_count = 0;
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439 | v->per_target = 0;
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440 | v->append = 0;
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441 | v->export = v_default;
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442 |
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443 | v->exportable = 1;
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444 | if (*name != '_' && (*name < 'A' || *name > 'Z')
|
---|
445 | && (*name < 'a' || *name > 'z'))
|
---|
446 | v->exportable = 0;
|
---|
447 | else
|
---|
448 | {
|
---|
449 | for (++name; *name != '\0'; ++name)
|
---|
450 | if (*name != '_' && (*name < 'a' || *name > 'z')
|
---|
451 | && (*name < 'A' || *name > 'Z') && !ISDIGIT(*name))
|
---|
452 | break;
|
---|
453 |
|
---|
454 | if (*name != '\0')
|
---|
455 | v->exportable = 0;
|
---|
456 | }
|
---|
457 |
|
---|
458 | return v;
|
---|
459 | }
|
---|
460 | |
---|
461 |
|
---|
462 | /* If the variable passed in is "special", handle its special nature.
|
---|
463 | Currently there are two such variables, both used for introspection:
|
---|
464 | .VARIABLES expands to a list of all the variables defined in this instance
|
---|
465 | of make.
|
---|
466 | .TARGETS expands to a list of all the targets defined in this
|
---|
467 | instance of make.
|
---|
468 | Returns the variable reference passed in. */
|
---|
469 |
|
---|
470 | #define EXPANSION_INCREMENT(_l) ((((_l) / 500) + 1) * 500)
|
---|
471 |
|
---|
472 | static struct variable *
|
---|
473 | handle_special_var (struct variable *var)
|
---|
474 | {
|
---|
475 | static unsigned long last_var_count = 0;
|
---|
476 |
|
---|
477 |
|
---|
478 | /* This one actually turns out to be very hard, due to the way the parser
|
---|
479 | records targets. The way it works is that target information is collected
|
---|
480 | internally until make knows the target is completely specified. It unitl
|
---|
481 | it sees that some new construct (a new target or variable) is defined that
|
---|
482 | it knows the previous one is done. In short, this means that if you do
|
---|
483 | this:
|
---|
484 |
|
---|
485 | all:
|
---|
486 |
|
---|
487 | TARGS := $(.TARGETS)
|
---|
488 |
|
---|
489 | then $(TARGS) won't contain "all", because it's not until after the
|
---|
490 | variable is created that the previous target is completed.
|
---|
491 |
|
---|
492 | Changing this would be a major pain. I think a less complex way to do it
|
---|
493 | would be to pre-define the target files as soon as the first line is
|
---|
494 | parsed, then come back and do the rest of the definition as now. That
|
---|
495 | would allow $(.TARGETS) to be correct without a major change to the way
|
---|
496 | the parser works.
|
---|
497 |
|
---|
498 | if (streq (var->name, ".TARGETS"))
|
---|
499 | var->value = build_target_list (var->value);
|
---|
500 | else
|
---|
501 | */
|
---|
502 |
|
---|
503 | if (streq (var->name, ".VARIABLES")
|
---|
504 | && global_variable_set.table.ht_fill != last_var_count)
|
---|
505 | {
|
---|
506 | unsigned long max = EXPANSION_INCREMENT (strlen (var->value));
|
---|
507 | unsigned long len;
|
---|
508 | char *p;
|
---|
509 | struct variable **vp = (struct variable **) global_variable_set.table.ht_vec;
|
---|
510 | struct variable **end = &vp[global_variable_set.table.ht_size];
|
---|
511 |
|
---|
512 | /* Make sure we have at least MAX bytes in the allocated buffer. */
|
---|
513 | var->value = xrealloc (var->value, max);
|
---|
514 |
|
---|
515 | /* Walk through the hash of variables, constructing a list of names. */
|
---|
516 | p = var->value;
|
---|
517 | len = 0;
|
---|
518 | for (; vp < end; ++vp)
|
---|
519 | if (!HASH_VACANT (*vp))
|
---|
520 | {
|
---|
521 | struct variable *v = *vp;
|
---|
522 | int l = v->length;
|
---|
523 |
|
---|
524 | len += l + 1;
|
---|
525 | if (len > max)
|
---|
526 | {
|
---|
527 | unsigned long off = p - var->value;
|
---|
528 |
|
---|
529 | max += EXPANSION_INCREMENT (l + 1);
|
---|
530 | var->value = xrealloc (var->value, max);
|
---|
531 | p = &var->value[off];
|
---|
532 | }
|
---|
533 |
|
---|
534 | memcpy (p, v->name, l);
|
---|
535 | p += l;
|
---|
536 | *(p++) = ' ';
|
---|
537 | }
|
---|
538 | *(p-1) = '\0';
|
---|
539 |
|
---|
540 | /* Remember how many variables are in our current count. Since we never
|
---|
541 | remove variables from the list, this is a reliable way to know whether
|
---|
542 | the list is up to date or needs to be recomputed. */
|
---|
543 |
|
---|
544 | last_var_count = global_variable_set.table.ht_fill;
|
---|
545 | }
|
---|
546 |
|
---|
547 | return var;
|
---|
548 | }
|
---|
549 |
|
---|
550 | |
---|
551 |
|
---|
552 | /* Lookup a variable whose name is a string starting at NAME
|
---|
553 | and with LENGTH chars. NAME need not be null-terminated.
|
---|
554 | Returns address of the `struct variable' containing all info
|
---|
555 | on the variable, or nil if no such variable is defined. */
|
---|
556 |
|
---|
557 | struct variable *
|
---|
558 | lookup_variable (const char *name, unsigned int length)
|
---|
559 | {
|
---|
560 | const struct variable_set_list *setlist;
|
---|
561 | struct variable var_key;
|
---|
562 |
|
---|
563 | var_key.name = (char *) name;
|
---|
564 | var_key.length = length;
|
---|
565 | #ifdef VARIABLE_HASH /* bird */
|
---|
566 | var_key.hash1 = variable_hash_1i (name, length);
|
---|
567 | var_key.hash2 = 0;
|
---|
568 | #endif
|
---|
569 |
|
---|
570 | for (setlist = current_variable_set_list;
|
---|
571 | setlist != 0; setlist = setlist->next)
|
---|
572 | {
|
---|
573 | #ifdef VARIABLE_HASH /* bird: speed */
|
---|
574 | struct hash_table *ht = &setlist->set->table;
|
---|
575 | unsigned int hash_1 = var_key.hash1;
|
---|
576 | struct variable *v;
|
---|
577 |
|
---|
578 | ht->ht_lookups++;
|
---|
579 | for (;;)
|
---|
580 | {
|
---|
581 | hash_1 &= (ht->ht_size - 1);
|
---|
582 | v = (struct variable *)ht->ht_vec[hash_1];
|
---|
583 |
|
---|
584 | if (v == 0)
|
---|
585 | break;
|
---|
586 | if ((void *)v != hash_deleted_item)
|
---|
587 | {
|
---|
588 | if (variable_hash_cmp(&var_key, v) == 0)
|
---|
589 | {
|
---|
590 | # ifdef VARIABLE_HASH_STRICT /* bird */
|
---|
591 | struct variable *v2 = (struct variable *) hash_find_item ((struct hash_table *) &setlist->set->table, &var_key);
|
---|
592 | assert(v2 == v);
|
---|
593 | # endif
|
---|
594 | return v->special ? handle_special_var (v) : v;
|
---|
595 | }
|
---|
596 | ht->ht_collisions++;
|
---|
597 | }
|
---|
598 | if (!var_key.hash2)
|
---|
599 | var_key.hash2 = variable_hash_2i(name, length);
|
---|
600 | hash_1 += (var_key.hash2 | 1);
|
---|
601 | }
|
---|
602 |
|
---|
603 | #else /* !VARIABLE_HASH */
|
---|
604 | const struct variable_set *set = setlist->set;
|
---|
605 | struct variable *v;
|
---|
606 |
|
---|
607 | v = (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
|
---|
608 | if (v)
|
---|
609 | return v->special ? handle_special_var (v) : v;
|
---|
610 | #endif /* !VARIABLE_HASH */
|
---|
611 | }
|
---|
612 |
|
---|
613 | #ifdef VMS
|
---|
614 | /* since we don't read envp[] on startup, try to get the
|
---|
615 | variable via getenv() here. */
|
---|
616 | {
|
---|
617 | char *vname = alloca (length + 1);
|
---|
618 | char *value;
|
---|
619 | strncpy (vname, name, length);
|
---|
620 | vname[length] = 0;
|
---|
621 | value = getenv (vname);
|
---|
622 | if (value != 0)
|
---|
623 | {
|
---|
624 | char *sptr;
|
---|
625 | int scnt;
|
---|
626 |
|
---|
627 | sptr = value;
|
---|
628 | scnt = 0;
|
---|
629 |
|
---|
630 | while ((sptr = strchr (sptr, '$')))
|
---|
631 | {
|
---|
632 | scnt++;
|
---|
633 | sptr++;
|
---|
634 | }
|
---|
635 |
|
---|
636 | if (scnt > 0)
|
---|
637 | {
|
---|
638 | char *nvalue;
|
---|
639 | char *nptr;
|
---|
640 |
|
---|
641 | nvalue = alloca (strlen (value) + scnt + 1);
|
---|
642 | sptr = value;
|
---|
643 | nptr = nvalue;
|
---|
644 |
|
---|
645 | while (*sptr)
|
---|
646 | {
|
---|
647 | if (*sptr == '$')
|
---|
648 | {
|
---|
649 | *nptr++ = '$';
|
---|
650 | *nptr++ = '$';
|
---|
651 | }
|
---|
652 | else
|
---|
653 | {
|
---|
654 | *nptr++ = *sptr;
|
---|
655 | }
|
---|
656 | sptr++;
|
---|
657 | }
|
---|
658 |
|
---|
659 | *nptr = '\0';
|
---|
660 | return define_variable (vname, length, nvalue, o_env, 1);
|
---|
661 |
|
---|
662 | }
|
---|
663 |
|
---|
664 | return define_variable (vname, length, value, o_env, 1);
|
---|
665 | }
|
---|
666 | }
|
---|
667 | #endif /* VMS */
|
---|
668 |
|
---|
669 | return 0;
|
---|
670 | }
|
---|
671 | |
---|
672 |
|
---|
673 | /* Lookup a variable whose name is a string starting at NAME
|
---|
674 | and with LENGTH chars in set SET. NAME need not be null-terminated.
|
---|
675 | Returns address of the `struct variable' containing all info
|
---|
676 | on the variable, or nil if no such variable is defined. */
|
---|
677 |
|
---|
678 | struct variable *
|
---|
679 | lookup_variable_in_set (const char *name, unsigned int length,
|
---|
680 | const struct variable_set *set)
|
---|
681 | {
|
---|
682 | struct variable var_key;
|
---|
683 |
|
---|
684 | var_key.name = (char *) name;
|
---|
685 | var_key.length = length;
|
---|
686 | #ifdef VARIABLE_HASH /* bird */
|
---|
687 | var_key.hash1 = variable_hash_1i (name, length);
|
---|
688 | var_key.hash2 = 0;
|
---|
689 | #endif
|
---|
690 |
|
---|
691 | return (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
|
---|
692 | }
|
---|
693 | |
---|
694 |
|
---|
695 | /* Initialize FILE's variable set list. If FILE already has a variable set
|
---|
696 | list, the topmost variable set is left intact, but the the rest of the
|
---|
697 | chain is replaced with FILE->parent's setlist. If FILE is a double-colon
|
---|
698 | rule, then we will use the "root" double-colon target's variable set as the
|
---|
699 | parent of FILE's variable set.
|
---|
700 |
|
---|
701 | If we're READING a makefile, don't do the pattern variable search now,
|
---|
702 | since the pattern variable might not have been defined yet. */
|
---|
703 |
|
---|
704 | void
|
---|
705 | initialize_file_variables (struct file *file, int reading)
|
---|
706 | {
|
---|
707 | struct variable_set_list *l = file->variables;
|
---|
708 |
|
---|
709 | if (l == 0)
|
---|
710 | {
|
---|
711 | l = (struct variable_set_list *)
|
---|
712 | xmalloc (sizeof (struct variable_set_list));
|
---|
713 | l->set = xmalloc (sizeof (struct variable_set));
|
---|
714 | hash_init (&l->set->table, PERFILE_VARIABLE_BUCKETS,
|
---|
715 | variable_hash_1, variable_hash_2, variable_hash_cmp);
|
---|
716 | file->variables = l;
|
---|
717 | }
|
---|
718 |
|
---|
719 | /* If this is a double-colon, then our "parent" is the "root" target for
|
---|
720 | this double-colon rule. Since that rule has the same name, parent,
|
---|
721 | etc. we can just use its variables as the "next" for ours. */
|
---|
722 |
|
---|
723 | if (file->double_colon && file->double_colon != file)
|
---|
724 | {
|
---|
725 | initialize_file_variables (file->double_colon, reading);
|
---|
726 | l->next = file->double_colon->variables;
|
---|
727 | return;
|
---|
728 | }
|
---|
729 |
|
---|
730 | if (file->parent == 0)
|
---|
731 | l->next = &global_setlist;
|
---|
732 | else
|
---|
733 | {
|
---|
734 | initialize_file_variables (file->parent, reading);
|
---|
735 | l->next = file->parent->variables;
|
---|
736 | }
|
---|
737 |
|
---|
738 | /* If we're not reading makefiles and we haven't looked yet, see if
|
---|
739 | we can find pattern variables for this target. */
|
---|
740 |
|
---|
741 | if (!reading && !file->pat_searched)
|
---|
742 | {
|
---|
743 | struct pattern_var *p;
|
---|
744 |
|
---|
745 | p = lookup_pattern_var (0, file->name);
|
---|
746 | if (p != 0)
|
---|
747 | {
|
---|
748 | struct variable_set_list *global = current_variable_set_list;
|
---|
749 |
|
---|
750 | /* We found at least one. Set up a new variable set to accumulate
|
---|
751 | all the pattern variables that match this target. */
|
---|
752 |
|
---|
753 | file->pat_variables = create_new_variable_set ();
|
---|
754 | current_variable_set_list = file->pat_variables;
|
---|
755 |
|
---|
756 | do
|
---|
757 | {
|
---|
758 | /* We found one, so insert it into the set. */
|
---|
759 |
|
---|
760 | struct variable *v;
|
---|
761 |
|
---|
762 | if (p->variable.flavor == f_simple)
|
---|
763 | {
|
---|
764 | v = define_variable_loc (
|
---|
765 | p->variable.name, strlen (p->variable.name),
|
---|
766 | p->variable.value, p->variable.origin,
|
---|
767 | 0, &p->variable.fileinfo);
|
---|
768 |
|
---|
769 | v->flavor = f_simple;
|
---|
770 | }
|
---|
771 | else
|
---|
772 | {
|
---|
773 | v = do_variable_definition (
|
---|
774 | &p->variable.fileinfo, p->variable.name,
|
---|
775 | p->variable.value, p->variable.origin,
|
---|
776 | p->variable.flavor, 1);
|
---|
777 | }
|
---|
778 |
|
---|
779 | /* Also mark it as a per-target and copy export status. */
|
---|
780 | v->per_target = p->variable.per_target;
|
---|
781 | v->export = p->variable.export;
|
---|
782 | }
|
---|
783 | while ((p = lookup_pattern_var (p, file->name)) != 0);
|
---|
784 |
|
---|
785 | current_variable_set_list = global;
|
---|
786 | }
|
---|
787 | file->pat_searched = 1;
|
---|
788 | }
|
---|
789 |
|
---|
790 | /* If we have a pattern variable match, set it up. */
|
---|
791 |
|
---|
792 | if (file->pat_variables != 0)
|
---|
793 | {
|
---|
794 | file->pat_variables->next = l->next;
|
---|
795 | l->next = file->pat_variables;
|
---|
796 | }
|
---|
797 | }
|
---|
798 | |
---|
799 |
|
---|
800 | /* Pop the top set off the current variable set list,
|
---|
801 | and free all its storage. */
|
---|
802 |
|
---|
803 | struct variable_set_list *
|
---|
804 | create_new_variable_set (void)
|
---|
805 | {
|
---|
806 | register struct variable_set_list *setlist;
|
---|
807 | register struct variable_set *set;
|
---|
808 |
|
---|
809 | set = xmalloc (sizeof (struct variable_set));
|
---|
810 | hash_init (&set->table, SMALL_SCOPE_VARIABLE_BUCKETS,
|
---|
811 | variable_hash_1, variable_hash_2, variable_hash_cmp);
|
---|
812 |
|
---|
813 | setlist = (struct variable_set_list *)
|
---|
814 | xmalloc (sizeof (struct variable_set_list));
|
---|
815 | setlist->set = set;
|
---|
816 | setlist->next = current_variable_set_list;
|
---|
817 |
|
---|
818 | return setlist;
|
---|
819 | }
|
---|
820 |
|
---|
821 | static void
|
---|
822 | free_variable_name_and_value (const void *item)
|
---|
823 | {
|
---|
824 | struct variable *v = (struct variable *) item;
|
---|
825 | free (v->name);
|
---|
826 | free (v->value);
|
---|
827 | }
|
---|
828 |
|
---|
829 | void
|
---|
830 | free_variable_set (struct variable_set_list *list)
|
---|
831 | {
|
---|
832 | hash_map (&list->set->table, free_variable_name_and_value);
|
---|
833 | hash_free (&list->set->table, 1);
|
---|
834 | free (list->set);
|
---|
835 | free (list);
|
---|
836 | }
|
---|
837 |
|
---|
838 | /* Create a new variable set and push it on the current setlist.
|
---|
839 | If we're pushing a global scope (that is, the current scope is the global
|
---|
840 | scope) then we need to "push" it the other way: file variable sets point
|
---|
841 | directly to the global_setlist so we need to replace that with the new one.
|
---|
842 | */
|
---|
843 |
|
---|
844 | struct variable_set_list *
|
---|
845 | push_new_variable_scope (void)
|
---|
846 | {
|
---|
847 | current_variable_set_list = create_new_variable_set();
|
---|
848 | if (current_variable_set_list->next == &global_setlist)
|
---|
849 | {
|
---|
850 | /* It was the global, so instead of new -> &global we want to replace
|
---|
851 | &global with the new one and have &global -> new, with current still
|
---|
852 | pointing to &global */
|
---|
853 | struct variable_set *set = current_variable_set_list->set;
|
---|
854 | current_variable_set_list->set = global_setlist.set;
|
---|
855 | global_setlist.set = set;
|
---|
856 | current_variable_set_list->next = global_setlist.next;
|
---|
857 | global_setlist.next = current_variable_set_list;
|
---|
858 | current_variable_set_list = &global_setlist;
|
---|
859 | }
|
---|
860 | return (current_variable_set_list);
|
---|
861 | }
|
---|
862 |
|
---|
863 | void
|
---|
864 | pop_variable_scope (void)
|
---|
865 | {
|
---|
866 | struct variable_set_list *setlist;
|
---|
867 | struct variable_set *set;
|
---|
868 |
|
---|
869 | /* Can't call this if there's no scope to pop! */
|
---|
870 | assert(current_variable_set_list->next != NULL);
|
---|
871 |
|
---|
872 | if (current_variable_set_list != &global_setlist)
|
---|
873 | {
|
---|
874 | /* We're not pointing to the global setlist, so pop this one. */
|
---|
875 | setlist = current_variable_set_list;
|
---|
876 | set = setlist->set;
|
---|
877 | current_variable_set_list = setlist->next;
|
---|
878 | }
|
---|
879 | else
|
---|
880 | {
|
---|
881 | /* This set is the one in the global_setlist, but there is another global
|
---|
882 | set beyond that. We want to copy that set to global_setlist, then
|
---|
883 | delete what used to be in global_setlist. */
|
---|
884 | setlist = global_setlist.next;
|
---|
885 | set = global_setlist.set;
|
---|
886 | global_setlist.set = setlist->set;
|
---|
887 | global_setlist.next = setlist->next;
|
---|
888 | }
|
---|
889 |
|
---|
890 | /* Free the one we no longer need. */
|
---|
891 | free (setlist);
|
---|
892 | hash_map (&set->table, free_variable_name_and_value);
|
---|
893 | hash_free (&set->table, 1);
|
---|
894 | free (set);
|
---|
895 | }
|
---|
896 | |
---|
897 |
|
---|
898 | /* Merge FROM_SET into TO_SET, freeing unused storage in FROM_SET. */
|
---|
899 |
|
---|
900 | static void
|
---|
901 | merge_variable_sets (struct variable_set *to_set,
|
---|
902 | struct variable_set *from_set)
|
---|
903 | {
|
---|
904 | struct variable **from_var_slot = (struct variable **) from_set->table.ht_vec;
|
---|
905 | struct variable **from_var_end = from_var_slot + from_set->table.ht_size;
|
---|
906 |
|
---|
907 | for ( ; from_var_slot < from_var_end; from_var_slot++)
|
---|
908 | if (! HASH_VACANT (*from_var_slot))
|
---|
909 | {
|
---|
910 | struct variable *from_var = *from_var_slot;
|
---|
911 | struct variable **to_var_slot
|
---|
912 | = (struct variable **) hash_find_slot (&to_set->table, *from_var_slot);
|
---|
913 | if (HASH_VACANT (*to_var_slot))
|
---|
914 | hash_insert_at (&to_set->table, from_var, to_var_slot);
|
---|
915 | else
|
---|
916 | {
|
---|
917 | /* GKM FIXME: delete in from_set->table */
|
---|
918 | free (from_var->value);
|
---|
919 | free (from_var);
|
---|
920 | }
|
---|
921 | }
|
---|
922 | }
|
---|
923 |
|
---|
924 | /* Merge SETLIST1 into SETLIST0, freeing unused storage in SETLIST1. */
|
---|
925 |
|
---|
926 | void
|
---|
927 | merge_variable_set_lists (struct variable_set_list **setlist0,
|
---|
928 | struct variable_set_list *setlist1)
|
---|
929 | {
|
---|
930 | struct variable_set_list *to = *setlist0;
|
---|
931 | struct variable_set_list *last0 = 0;
|
---|
932 |
|
---|
933 | /* If there's nothing to merge, stop now. */
|
---|
934 | if (!setlist1)
|
---|
935 | return;
|
---|
936 |
|
---|
937 | /* This loop relies on the fact that all setlists terminate with the global
|
---|
938 | setlist (before NULL). If that's not true, arguably we SHOULD die. */
|
---|
939 | if (to)
|
---|
940 | while (setlist1 != &global_setlist && to != &global_setlist)
|
---|
941 | {
|
---|
942 | struct variable_set_list *from = setlist1;
|
---|
943 | setlist1 = setlist1->next;
|
---|
944 |
|
---|
945 | merge_variable_sets (to->set, from->set);
|
---|
946 |
|
---|
947 | last0 = to;
|
---|
948 | to = to->next;
|
---|
949 | }
|
---|
950 |
|
---|
951 | if (setlist1 != &global_setlist)
|
---|
952 | {
|
---|
953 | if (last0 == 0)
|
---|
954 | *setlist0 = setlist1;
|
---|
955 | else
|
---|
956 | last0->next = setlist1;
|
---|
957 | }
|
---|
958 | }
|
---|
959 | |
---|
960 |
|
---|
961 | /* Define the automatic variables, and record the addresses
|
---|
962 | of their structures so we can change their values quickly. */
|
---|
963 |
|
---|
964 | void
|
---|
965 | define_automatic_variables (void)
|
---|
966 | {
|
---|
967 | #if defined(WINDOWS32) || defined(__EMX__)
|
---|
968 | extern char* default_shell;
|
---|
969 | #else
|
---|
970 | extern char default_shell[];
|
---|
971 | #endif
|
---|
972 | register struct variable *v;
|
---|
973 | char buf[200];
|
---|
974 | #ifdef KMK
|
---|
975 | const char *envvar;
|
---|
976 | #endif
|
---|
977 |
|
---|
978 | sprintf (buf, "%u", makelevel);
|
---|
979 | (void) define_variable (MAKELEVEL_NAME, MAKELEVEL_LENGTH, buf, o_env, 0);
|
---|
980 |
|
---|
981 | sprintf (buf, "%s%s%s",
|
---|
982 | version_string,
|
---|
983 | (remote_description == 0 || remote_description[0] == '\0')
|
---|
984 | ? "" : "-",
|
---|
985 | (remote_description == 0 || remote_description[0] == '\0')
|
---|
986 | ? "" : remote_description);
|
---|
987 | (void) define_variable ("MAKE_VERSION", 12, buf, o_default, 0);
|
---|
988 |
|
---|
989 | #ifdef KMK
|
---|
990 | /* Define KMK_VERSION to indicate kMk. */
|
---|
991 | (void) define_variable ("KMK_VERSION", 11, buf, o_default, 0);
|
---|
992 |
|
---|
993 | /* Define KBUILD_VERSION* */
|
---|
994 | sprintf (buf, "%d", KBUILD_VERSION_MAJOR);
|
---|
995 | define_variable ("KBUILD_VERSION_MAJOR", sizeof ("KBUILD_VERSION_MAJOR") - 1,
|
---|
996 | buf, o_default, 0);
|
---|
997 | sprintf (buf, "%d", KBUILD_VERSION_MINOR);
|
---|
998 | define_variable ("KBUILD_VERSION_MINOR", sizeof("KBUILD_VERSION_MINOR") - 1,
|
---|
999 | buf, o_default, 0);
|
---|
1000 | sprintf (buf, "%d", KBUILD_VERSION_PATCH);
|
---|
1001 | define_variable ("KBUILD_VERSION_PATCH", sizeof ("KBUILD_VERSION_PATCH") - 1,
|
---|
1002 | buf, o_default, 0);
|
---|
1003 |
|
---|
1004 | sprintf (buf, "%d.%d.%d", KBUILD_VERSION_MAJOR, KBUILD_VERSION_MINOR, KBUILD_VERSION_PATCH);
|
---|
1005 | define_variable ("KBUILD_VERSION", sizeof ("KBUILD_VERSION") - 1,
|
---|
1006 | buf, o_default, 0);
|
---|
1007 |
|
---|
1008 | /* The build platform defaults. */
|
---|
1009 | envvar = getenv ("BUILD_PLATFORM");
|
---|
1010 | if (!envvar)
|
---|
1011 | define_variable ("BUILD_PLATFORM", sizeof ("BUILD_PLATFORM") - 1,
|
---|
1012 | BUILD_PLATFORM, o_default, 0);
|
---|
1013 | envvar = getenv ("BUILD_PLATFORM_ARCH");
|
---|
1014 | if (!envvar)
|
---|
1015 | define_variable ("BUILD_PLATFORM_ARCH", sizeof ("BUILD_PLATFORM_ARCH") - 1,
|
---|
1016 | BUILD_PLATFORM_ARCH, o_default, 0);
|
---|
1017 | envvar = getenv ("BUILD_PLATFORM_CPU");
|
---|
1018 | if (!envvar)
|
---|
1019 | define_variable ("BUILD_PLATFORM_CPU", sizeof ("BUILD_PLATFORM_CPU") - 1,
|
---|
1020 | BUILD_PLATFORM_CPU, o_default, 0);
|
---|
1021 |
|
---|
1022 | /* The kBuild locations. */
|
---|
1023 | define_variable ("PATH_KBUILD", sizeof ("PATH_KBUILD") - 1,
|
---|
1024 | get_path_kbuild (), o_default, 0);
|
---|
1025 | define_variable ("PATH_KBUILD_BIN", sizeof ("PATH_KBUILD_BIN") - 1,
|
---|
1026 | get_path_kbuild_bin (), o_default, 0);
|
---|
1027 |
|
---|
1028 | /* Define KMK_FEATURES to indicate various working KMK features. */
|
---|
1029 | # if defined(CONFIG_WITH_RSORT) \
|
---|
1030 | && defined(CONFIG_WITH_ABSPATHEX) \
|
---|
1031 | && defined(CONFIG_WITH_TOUPPER_TOLOWER) \
|
---|
1032 | && defined(CONFIG_WITH_VALUE_LENGTH) && defined(CONFIG_WITH_COMPARE) \
|
---|
1033 | && defined(CONFIG_WITH_STACK) \
|
---|
1034 | && defined(CONFIG_WITH_MATH) \
|
---|
1035 | && defined(CONFIG_WITH_XARGS) \
|
---|
1036 | && defined(CONFIG_WITH_EXPLICIT_MULTITARGET) \
|
---|
1037 | && defined(CONFIG_WITH_PREPEND_ASSIGNMENT) \
|
---|
1038 | && defined(CONFIG_WITH_SET_CONDITIONALS) \
|
---|
1039 | && defined(KMK_HELPERS)
|
---|
1040 | (void) define_variable ("KMK_FEATURES", 12,
|
---|
1041 | "append-dash-n abspath"
|
---|
1042 | " rsort"
|
---|
1043 | " abspathex"
|
---|
1044 | " toupper tolower"
|
---|
1045 | " comp-vars comp-cmds"
|
---|
1046 | " stack"
|
---|
1047 | " math-int"
|
---|
1048 | " xargs"
|
---|
1049 | " explicit-multitarget"
|
---|
1050 | " prepend-assignment"
|
---|
1051 | " set-conditionals"
|
---|
1052 | " kb-src-tool kb-obj-base kb-obj-suff kb-src-prop kb-src-one "
|
---|
1053 | , o_default, 0);
|
---|
1054 | # else /* MSC can't deal with strings mixed with #if/#endif, thus the slow way. */
|
---|
1055 | # error "All features should be enabled by default!"
|
---|
1056 | strcpy (buf, "append-dash-n abspath");
|
---|
1057 | # if defined (CONFIG_WITH_RSORT)
|
---|
1058 | strcat (buf, " rsort");
|
---|
1059 | # endif
|
---|
1060 | # if defined (CONFIG_WITH_ABSPATHEX)
|
---|
1061 | strcat (buf, " abspathex");
|
---|
1062 | # endif
|
---|
1063 | # if defined (CONFIG_WITH_TOUPPER_TOLOWER)
|
---|
1064 | strcat (buf, " toupper tolower");
|
---|
1065 | # endif
|
---|
1066 | # if defined (CONFIG_WITH_VALUE_LENGTH) && defined(CONFIG_WITH_COMPARE)
|
---|
1067 | strcat (buf, " comp-vars comp-cmds");
|
---|
1068 | # endif
|
---|
1069 | # if defined (CONFIG_WITH_STACK)
|
---|
1070 | strcat (buf, " stack");
|
---|
1071 | # endif
|
---|
1072 | # if defined (CONFIG_WITH_MATH)
|
---|
1073 | strcat (buf, " math-int");
|
---|
1074 | # endif
|
---|
1075 | # if defined (CONFIG_WITH_XARGS)
|
---|
1076 | strcat (buf, " xargs");
|
---|
1077 | # endif
|
---|
1078 | # if defined (CONFIG_WITH_EXPLICIT_MULTITARGET)
|
---|
1079 | strcat (buf, " explicit-multitarget");
|
---|
1080 | # endif
|
---|
1081 | # if defined (CONFIG_WITH_PREPEND_ASSIGNMENT)
|
---|
1082 | strcat (buf, " prepend-assignment");
|
---|
1083 | # endif
|
---|
1084 | # if defined (CONFIG_WITH_SET_CONDITIONALS)
|
---|
1085 | strcat (buf, " set-conditionals");
|
---|
1086 | # endif
|
---|
1087 | # if defined (KMK_HELPERS)
|
---|
1088 | strcat (buf, " kb-src-tool kb-obj-base kb-obj-suff kb-src-prop kb-src-one");
|
---|
1089 | # endif
|
---|
1090 | (void) define_variable ("KMK_FEATURES", 12, buf, o_default, 0);
|
---|
1091 | # endif
|
---|
1092 |
|
---|
1093 | #endif /* KMK */
|
---|
1094 |
|
---|
1095 | #ifdef CONFIG_WITH_KMK_BUILTIN
|
---|
1096 | /* The supported kMk Builtin commands. */
|
---|
1097 | (void) define_variable ("KMK_BUILTIN", 11, "append cat cp cmp echo install ln md5sum mkdir mv printf rm rmdir", o_default, 0);
|
---|
1098 | #endif
|
---|
1099 |
|
---|
1100 | #ifdef __MSDOS__
|
---|
1101 | /* Allow to specify a special shell just for Make,
|
---|
1102 | and use $COMSPEC as the default $SHELL when appropriate. */
|
---|
1103 | {
|
---|
1104 | static char shell_str[] = "SHELL";
|
---|
1105 | const int shlen = sizeof (shell_str) - 1;
|
---|
1106 | struct variable *mshp = lookup_variable ("MAKESHELL", 9);
|
---|
1107 | struct variable *comp = lookup_variable ("COMSPEC", 7);
|
---|
1108 |
|
---|
1109 | /* Make $MAKESHELL override $SHELL even if -e is in effect. */
|
---|
1110 | if (mshp)
|
---|
1111 | (void) define_variable (shell_str, shlen,
|
---|
1112 | mshp->value, o_env_override, 0);
|
---|
1113 | else if (comp)
|
---|
1114 | {
|
---|
1115 | /* $COMSPEC shouldn't override $SHELL. */
|
---|
1116 | struct variable *shp = lookup_variable (shell_str, shlen);
|
---|
1117 |
|
---|
1118 | if (!shp)
|
---|
1119 | (void) define_variable (shell_str, shlen, comp->value, o_env, 0);
|
---|
1120 | }
|
---|
1121 | }
|
---|
1122 | #elif defined(__EMX__)
|
---|
1123 | {
|
---|
1124 | static char shell_str[] = "SHELL";
|
---|
1125 | const int shlen = sizeof (shell_str) - 1;
|
---|
1126 | struct variable *shell = lookup_variable (shell_str, shlen);
|
---|
1127 | struct variable *replace = lookup_variable ("MAKESHELL", 9);
|
---|
1128 |
|
---|
1129 | /* if $MAKESHELL is defined in the environment assume o_env_override */
|
---|
1130 | if (replace && *replace->value && replace->origin == o_env)
|
---|
1131 | replace->origin = o_env_override;
|
---|
1132 |
|
---|
1133 | /* if $MAKESHELL is not defined use $SHELL but only if the variable
|
---|
1134 | did not come from the environment */
|
---|
1135 | if (!replace || !*replace->value)
|
---|
1136 | if (shell && *shell->value && (shell->origin == o_env
|
---|
1137 | || shell->origin == o_env_override))
|
---|
1138 | {
|
---|
1139 | /* overwrite whatever we got from the environment */
|
---|
1140 | free(shell->value);
|
---|
1141 | shell->value = xstrdup (default_shell);
|
---|
1142 | shell->origin = o_default;
|
---|
1143 | }
|
---|
1144 |
|
---|
1145 | /* Some people do not like cmd to be used as the default
|
---|
1146 | if $SHELL is not defined in the Makefile.
|
---|
1147 | With -DNO_CMD_DEFAULT you can turn off this behaviour */
|
---|
1148 | # ifndef NO_CMD_DEFAULT
|
---|
1149 | /* otherwise use $COMSPEC */
|
---|
1150 | if (!replace || !*replace->value)
|
---|
1151 | replace = lookup_variable ("COMSPEC", 7);
|
---|
1152 |
|
---|
1153 | /* otherwise use $OS2_SHELL */
|
---|
1154 | if (!replace || !*replace->value)
|
---|
1155 | replace = lookup_variable ("OS2_SHELL", 9);
|
---|
1156 | # else
|
---|
1157 | # warning NO_CMD_DEFAULT: GNU make will not use CMD.EXE as default shell
|
---|
1158 | # endif
|
---|
1159 |
|
---|
1160 | if (replace && *replace->value)
|
---|
1161 | /* overwrite $SHELL */
|
---|
1162 | (void) define_variable (shell_str, shlen, replace->value,
|
---|
1163 | replace->origin, 0);
|
---|
1164 | else
|
---|
1165 | /* provide a definition if there is none */
|
---|
1166 | (void) define_variable (shell_str, shlen, default_shell,
|
---|
1167 | o_default, 0);
|
---|
1168 | }
|
---|
1169 |
|
---|
1170 | #endif
|
---|
1171 |
|
---|
1172 | /* This won't override any definition, but it will provide one if there
|
---|
1173 | isn't one there. */
|
---|
1174 | v = define_variable ("SHELL", 5, default_shell, o_default, 0);
|
---|
1175 |
|
---|
1176 | /* On MSDOS we do use SHELL from environment, since it isn't a standard
|
---|
1177 | environment variable on MSDOS, so whoever sets it, does that on purpose.
|
---|
1178 | On OS/2 we do not use SHELL from environment but we have already handled
|
---|
1179 | that problem above. */
|
---|
1180 | #if !defined(__MSDOS__) && !defined(__EMX__)
|
---|
1181 | /* Don't let SHELL come from the environment. */
|
---|
1182 | if (*v->value == '\0' || v->origin == o_env || v->origin == o_env_override)
|
---|
1183 | {
|
---|
1184 | free (v->value);
|
---|
1185 | v->origin = o_file;
|
---|
1186 | v->value = xstrdup (default_shell);
|
---|
1187 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1188 | v->value_length = strlen (v->value);
|
---|
1189 | v->value_alloc_len = v->value_length + 1;
|
---|
1190 | #endif
|
---|
1191 | }
|
---|
1192 | #endif
|
---|
1193 |
|
---|
1194 | /* Make sure MAKEFILES gets exported if it is set. */
|
---|
1195 | v = define_variable ("MAKEFILES", 9, "", o_default, 0);
|
---|
1196 | v->export = v_ifset;
|
---|
1197 |
|
---|
1198 | /* Define the magic D and F variables in terms of
|
---|
1199 | the automatic variables they are variations of. */
|
---|
1200 |
|
---|
1201 | #ifdef VMS
|
---|
1202 | define_variable ("@D", 2, "$(dir $@)", o_automatic, 1);
|
---|
1203 | define_variable ("%D", 2, "$(dir $%)", o_automatic, 1);
|
---|
1204 | define_variable ("*D", 2, "$(dir $*)", o_automatic, 1);
|
---|
1205 | define_variable ("<D", 2, "$(dir $<)", o_automatic, 1);
|
---|
1206 | define_variable ("?D", 2, "$(dir $?)", o_automatic, 1);
|
---|
1207 | define_variable ("^D", 2, "$(dir $^)", o_automatic, 1);
|
---|
1208 | define_variable ("+D", 2, "$(dir $+)", o_automatic, 1);
|
---|
1209 | #else
|
---|
1210 | define_variable ("@D", 2, "$(patsubst %/,%,$(dir $@))", o_automatic, 1);
|
---|
1211 | define_variable ("%D", 2, "$(patsubst %/,%,$(dir $%))", o_automatic, 1);
|
---|
1212 | define_variable ("*D", 2, "$(patsubst %/,%,$(dir $*))", o_automatic, 1);
|
---|
1213 | define_variable ("<D", 2, "$(patsubst %/,%,$(dir $<))", o_automatic, 1);
|
---|
1214 | define_variable ("?D", 2, "$(patsubst %/,%,$(dir $?))", o_automatic, 1);
|
---|
1215 | define_variable ("^D", 2, "$(patsubst %/,%,$(dir $^))", o_automatic, 1);
|
---|
1216 | define_variable ("+D", 2, "$(patsubst %/,%,$(dir $+))", o_automatic, 1);
|
---|
1217 | #endif
|
---|
1218 | define_variable ("@F", 2, "$(notdir $@)", o_automatic, 1);
|
---|
1219 | define_variable ("%F", 2, "$(notdir $%)", o_automatic, 1);
|
---|
1220 | define_variable ("*F", 2, "$(notdir $*)", o_automatic, 1);
|
---|
1221 | define_variable ("<F", 2, "$(notdir $<)", o_automatic, 1);
|
---|
1222 | define_variable ("?F", 2, "$(notdir $?)", o_automatic, 1);
|
---|
1223 | define_variable ("^F", 2, "$(notdir $^)", o_automatic, 1);
|
---|
1224 | define_variable ("+F", 2, "$(notdir $+)", o_automatic, 1);
|
---|
1225 | }
|
---|
1226 | |
---|
1227 |
|
---|
1228 | int export_all_variables;
|
---|
1229 |
|
---|
1230 | /* Create a new environment for FILE's commands.
|
---|
1231 | If FILE is nil, this is for the `shell' function.
|
---|
1232 | The child's MAKELEVEL variable is incremented. */
|
---|
1233 |
|
---|
1234 | char **
|
---|
1235 | target_environment (struct file *file)
|
---|
1236 | {
|
---|
1237 | struct variable_set_list *set_list;
|
---|
1238 | register struct variable_set_list *s;
|
---|
1239 | struct hash_table table;
|
---|
1240 | struct variable **v_slot;
|
---|
1241 | struct variable **v_end;
|
---|
1242 | struct variable makelevel_key;
|
---|
1243 | char **result_0;
|
---|
1244 | char **result;
|
---|
1245 |
|
---|
1246 | if (file == 0)
|
---|
1247 | set_list = current_variable_set_list;
|
---|
1248 | else
|
---|
1249 | set_list = file->variables;
|
---|
1250 |
|
---|
1251 | hash_init (&table, VARIABLE_BUCKETS,
|
---|
1252 | variable_hash_1, variable_hash_2, variable_hash_cmp);
|
---|
1253 |
|
---|
1254 | /* Run through all the variable sets in the list,
|
---|
1255 | accumulating variables in TABLE. */
|
---|
1256 | for (s = set_list; s != 0; s = s->next)
|
---|
1257 | {
|
---|
1258 | struct variable_set *set = s->set;
|
---|
1259 | v_slot = (struct variable **) set->table.ht_vec;
|
---|
1260 | v_end = v_slot + set->table.ht_size;
|
---|
1261 | for ( ; v_slot < v_end; v_slot++)
|
---|
1262 | if (! HASH_VACANT (*v_slot))
|
---|
1263 | {
|
---|
1264 | struct variable **new_slot;
|
---|
1265 | struct variable *v = *v_slot;
|
---|
1266 |
|
---|
1267 | /* If this is a per-target variable and it hasn't been touched
|
---|
1268 | already then look up the global version and take its export
|
---|
1269 | value. */
|
---|
1270 | if (v->per_target && v->export == v_default)
|
---|
1271 | {
|
---|
1272 | struct variable *gv;
|
---|
1273 |
|
---|
1274 | gv = lookup_variable_in_set (v->name, strlen(v->name),
|
---|
1275 | &global_variable_set);
|
---|
1276 | if (gv)
|
---|
1277 | v->export = gv->export;
|
---|
1278 | }
|
---|
1279 |
|
---|
1280 | switch (v->export)
|
---|
1281 | {
|
---|
1282 | case v_default:
|
---|
1283 | if (v->origin == o_default || v->origin == o_automatic)
|
---|
1284 | /* Only export default variables by explicit request. */
|
---|
1285 | continue;
|
---|
1286 |
|
---|
1287 | /* The variable doesn't have a name that can be exported. */
|
---|
1288 | if (! v->exportable)
|
---|
1289 | continue;
|
---|
1290 |
|
---|
1291 | if (! export_all_variables
|
---|
1292 | && v->origin != o_command
|
---|
1293 | && v->origin != o_env && v->origin != o_env_override)
|
---|
1294 | continue;
|
---|
1295 | break;
|
---|
1296 |
|
---|
1297 | case v_export:
|
---|
1298 | break;
|
---|
1299 |
|
---|
1300 | case v_noexport:
|
---|
1301 | /* If this is the SHELL variable and it's not exported, then
|
---|
1302 | add the value from our original environment. */
|
---|
1303 | if (streq (v->name, "SHELL"))
|
---|
1304 | {
|
---|
1305 | extern struct variable shell_var;
|
---|
1306 | v = &shell_var;
|
---|
1307 | break;
|
---|
1308 | }
|
---|
1309 | continue;
|
---|
1310 |
|
---|
1311 | case v_ifset:
|
---|
1312 | if (v->origin == o_default)
|
---|
1313 | continue;
|
---|
1314 | break;
|
---|
1315 | }
|
---|
1316 |
|
---|
1317 | new_slot = (struct variable **) hash_find_slot (&table, v);
|
---|
1318 | if (HASH_VACANT (*new_slot))
|
---|
1319 | hash_insert_at (&table, v, new_slot);
|
---|
1320 | }
|
---|
1321 | }
|
---|
1322 |
|
---|
1323 | makelevel_key.name = MAKELEVEL_NAME;
|
---|
1324 | makelevel_key.length = MAKELEVEL_LENGTH;
|
---|
1325 | #ifdef VARIABLE_HASH /* bird */
|
---|
1326 | makelevel_key.hash1 = variable_hash_1i (MAKELEVEL_NAME, MAKELEVEL_LENGTH);
|
---|
1327 | makelevel_key.hash2 = 0;
|
---|
1328 | #endif
|
---|
1329 | hash_delete (&table, &makelevel_key);
|
---|
1330 |
|
---|
1331 | result = result_0 = xmalloc ((table.ht_fill + 2) * sizeof (char *));
|
---|
1332 |
|
---|
1333 | v_slot = (struct variable **) table.ht_vec;
|
---|
1334 | v_end = v_slot + table.ht_size;
|
---|
1335 | for ( ; v_slot < v_end; v_slot++)
|
---|
1336 | if (! HASH_VACANT (*v_slot))
|
---|
1337 | {
|
---|
1338 | struct variable *v = *v_slot;
|
---|
1339 |
|
---|
1340 | /* If V is recursively expanded and didn't come from the environment,
|
---|
1341 | expand its value. If it came from the environment, it should
|
---|
1342 | go back into the environment unchanged. */
|
---|
1343 | if (v->recursive
|
---|
1344 | && v->origin != o_env && v->origin != o_env_override)
|
---|
1345 | {
|
---|
1346 | char *value = recursively_expand_for_file (v, file);
|
---|
1347 | #ifdef WINDOWS32
|
---|
1348 | if (strcmp(v->name, "Path") == 0 ||
|
---|
1349 | strcmp(v->name, "PATH") == 0)
|
---|
1350 | convert_Path_to_windows32(value, ';');
|
---|
1351 | #endif
|
---|
1352 | *result++ = xstrdup (concat (v->name, "=", value));
|
---|
1353 | free (value);
|
---|
1354 | }
|
---|
1355 | else
|
---|
1356 | {
|
---|
1357 | #ifdef WINDOWS32
|
---|
1358 | if (strcmp(v->name, "Path") == 0 ||
|
---|
1359 | strcmp(v->name, "PATH") == 0)
|
---|
1360 | convert_Path_to_windows32(v->value, ';');
|
---|
1361 | #endif
|
---|
1362 | *result++ = xstrdup (concat (v->name, "=", v->value));
|
---|
1363 | }
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 | *result = xmalloc (100);
|
---|
1367 | sprintf (*result, "%s=%u", MAKELEVEL_NAME, makelevel + 1);
|
---|
1368 | *++result = 0;
|
---|
1369 |
|
---|
1370 | hash_free (&table, 0);
|
---|
1371 |
|
---|
1372 | return result_0;
|
---|
1373 | }
|
---|
1374 | |
---|
1375 |
|
---|
1376 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1377 | static struct variable *
|
---|
1378 | do_variable_definition_append (const struct floc *flocp, struct variable *v, const char *value,
|
---|
1379 | enum variable_origin origin, int append)
|
---|
1380 | {
|
---|
1381 | if (env_overrides && origin == o_env)
|
---|
1382 | origin = o_env_override;
|
---|
1383 |
|
---|
1384 | if (env_overrides && v->origin == o_env)
|
---|
1385 | /* V came from in the environment. Since it was defined
|
---|
1386 | before the switches were parsed, it wasn't affected by -e. */
|
---|
1387 | v->origin = o_env_override;
|
---|
1388 |
|
---|
1389 | /* A variable of this name is already defined.
|
---|
1390 | If the old definition is from a stronger source
|
---|
1391 | than this one, don't redefine it. */
|
---|
1392 | if ((int) origin < (int) v->origin)
|
---|
1393 | return v;
|
---|
1394 | v->origin = origin;
|
---|
1395 |
|
---|
1396 | /* location */
|
---|
1397 | if (flocp != 0)
|
---|
1398 | v->fileinfo = *flocp;
|
---|
1399 |
|
---|
1400 | /* The juicy bits, append the specified value to the variable
|
---|
1401 | This is a heavily exercised code path in kBuild. */
|
---|
1402 | if (v->recursive)
|
---|
1403 | {
|
---|
1404 | /* The previous definition of the variable was recursive.
|
---|
1405 | The new value is the unexpanded old and new values. */
|
---|
1406 | unsigned int value_len = strlen (value);
|
---|
1407 | unsigned int new_value_len = value_len + (v->value_length != 0 ? 1 + v->value_length : 0);
|
---|
1408 | int done_1st_prepend_copy = 0;
|
---|
1409 |
|
---|
1410 | /* adjust the size. */
|
---|
1411 | if ((unsigned)v->value_alloc_len <= new_value_len)
|
---|
1412 | {
|
---|
1413 | v->value_alloc_len *= 2;
|
---|
1414 | if (v->value_alloc_len < new_value_len)
|
---|
1415 | v->value_alloc_len = (new_value_len + value_len + 0x7f) + ~0x7fU;
|
---|
1416 | if (append || !v->value_length)
|
---|
1417 | v->value = xrealloc (v->value, v->value_alloc_len);
|
---|
1418 | else
|
---|
1419 | {
|
---|
1420 | /* avoid the extra memcpy the xrealloc may have to do */
|
---|
1421 | char *new_buf = xmalloc (v->value_alloc_len);
|
---|
1422 | memcpy (&new_buf[value_len + 1], v->value, v->value_length + 1);
|
---|
1423 | done_1st_prepend_copy = 1;
|
---|
1424 | free (v->value);
|
---|
1425 | v->value = new_buf;
|
---|
1426 | }
|
---|
1427 | }
|
---|
1428 |
|
---|
1429 | /* insert the new bits */
|
---|
1430 | if (v->value_length != 0)
|
---|
1431 | {
|
---|
1432 | if (append)
|
---|
1433 | {
|
---|
1434 | v->value[v->value_length] = ' ';
|
---|
1435 | memcpy (&v->value[v->value_length + 1], value, value_len + 1);
|
---|
1436 | }
|
---|
1437 | else
|
---|
1438 | {
|
---|
1439 | if (!done_1st_prepend_copy)
|
---|
1440 | memmove (&v->value[value_len + 1], v->value, v->value_length + 1);
|
---|
1441 | v->value[value_len] = ' ';
|
---|
1442 | memcpy (v->value, value, value_len);
|
---|
1443 | }
|
---|
1444 | }
|
---|
1445 | else
|
---|
1446 | memcpy (v->value, value, value_len + 1);
|
---|
1447 | v->value_length = new_value_len;
|
---|
1448 | }
|
---|
1449 | else
|
---|
1450 | {
|
---|
1451 | /* The previous definition of the variable was simple.
|
---|
1452 | The new value comes from the old value, which was expanded
|
---|
1453 | when it was set; and from the expanded new value. */
|
---|
1454 | append_expanded_string_to_variable(v, value);
|
---|
1455 | }
|
---|
1456 |
|
---|
1457 | /* update the variable */
|
---|
1458 | return v;
|
---|
1459 | }
|
---|
1460 | #endif /* CONFIG_WITH_VALUE_LENGTH */
|
---|
1461 | |
---|
1462 |
|
---|
1463 | /* Given a variable, a value, and a flavor, define the variable.
|
---|
1464 | See the try_variable_definition() function for details on the parameters. */
|
---|
1465 |
|
---|
1466 | struct variable *
|
---|
1467 | do_variable_definition (const struct floc *flocp, const char *varname,
|
---|
1468 | const char *value, enum variable_origin origin,
|
---|
1469 | enum variable_flavor flavor, int target_var)
|
---|
1470 | {
|
---|
1471 | const char *p;
|
---|
1472 | char *alloc_value = NULL;
|
---|
1473 | struct variable *v;
|
---|
1474 | int append = 0;
|
---|
1475 | int conditional = 0;
|
---|
1476 | const size_t varname_len = strlen (varname); /* bird */
|
---|
1477 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1478 | unsigned int value_len = ~0U;
|
---|
1479 | #endif
|
---|
1480 |
|
---|
1481 | /* Calculate the variable's new value in VALUE. */
|
---|
1482 |
|
---|
1483 | switch (flavor)
|
---|
1484 | {
|
---|
1485 | default:
|
---|
1486 | case f_bogus:
|
---|
1487 | /* Should not be possible. */
|
---|
1488 | abort ();
|
---|
1489 | case f_simple:
|
---|
1490 | /* A simple variable definition "var := value". Expand the value.
|
---|
1491 | We have to allocate memory since otherwise it'll clobber the
|
---|
1492 | variable buffer, and we may still need that if we're looking at a
|
---|
1493 | target-specific variable. */
|
---|
1494 | p = alloc_value = allocated_variable_expand (value);
|
---|
1495 | break;
|
---|
1496 | case f_conditional:
|
---|
1497 | /* A conditional variable definition "var ?= value".
|
---|
1498 | The value is set IFF the variable is not defined yet. */
|
---|
1499 | v = lookup_variable (varname, varname_len);
|
---|
1500 | if (v)
|
---|
1501 | return v;
|
---|
1502 |
|
---|
1503 | conditional = 1;
|
---|
1504 | flavor = f_recursive;
|
---|
1505 | /* FALLTHROUGH */
|
---|
1506 | case f_recursive:
|
---|
1507 | /* A recursive variable definition "var = value".
|
---|
1508 | The value is used verbatim. */
|
---|
1509 | p = value;
|
---|
1510 | break;
|
---|
1511 | #ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
---|
1512 | case f_append:
|
---|
1513 | case f_prepend:
|
---|
1514 | {
|
---|
1515 | const enum variable_flavor org_flavor = flavor;
|
---|
1516 | #else
|
---|
1517 | case f_append:
|
---|
1518 | {
|
---|
1519 | #endif
|
---|
1520 |
|
---|
1521 | /* If we have += but we're in a target variable context, we want to
|
---|
1522 | append only with other variables in the context of this target. */
|
---|
1523 | if (target_var)
|
---|
1524 | {
|
---|
1525 | append = 1;
|
---|
1526 | v = lookup_variable_in_set (varname, varname_len,
|
---|
1527 | current_variable_set_list->set);
|
---|
1528 |
|
---|
1529 | /* Don't append from the global set if a previous non-appending
|
---|
1530 | target-specific variable definition exists. */
|
---|
1531 | if (v && !v->append)
|
---|
1532 | append = 0;
|
---|
1533 | }
|
---|
1534 | else
|
---|
1535 | v = lookup_variable (varname, varname_len);
|
---|
1536 |
|
---|
1537 | if (v == 0)
|
---|
1538 | {
|
---|
1539 | /* There was no old value.
|
---|
1540 | This becomes a normal recursive definition. */
|
---|
1541 | p = value;
|
---|
1542 | flavor = f_recursive;
|
---|
1543 | }
|
---|
1544 | else
|
---|
1545 | {
|
---|
1546 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1547 | v->append = append;
|
---|
1548 | # ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
---|
1549 | return do_variable_definition_append (flocp, v, value, origin, org_flavor == f_append);
|
---|
1550 | # else
|
---|
1551 | return do_variable_definition_append (flocp, v, value, origin, 1);
|
---|
1552 | # endif
|
---|
1553 | #else /* !CONFIG_WITH_VALUE_LENGTH */
|
---|
1554 |
|
---|
1555 | /* Paste the old and new values together in VALUE. */
|
---|
1556 |
|
---|
1557 | unsigned int oldlen, vallen;
|
---|
1558 | const char *val;
|
---|
1559 | char *tp;
|
---|
1560 |
|
---|
1561 | val = value;
|
---|
1562 | if (v->recursive)
|
---|
1563 | /* The previous definition of the variable was recursive.
|
---|
1564 | The new value is the unexpanded old and new values. */
|
---|
1565 | flavor = f_recursive;
|
---|
1566 | else
|
---|
1567 | /* The previous definition of the variable was simple.
|
---|
1568 | The new value comes from the old value, which was expanded
|
---|
1569 | when it was set; and from the expanded new value. Allocate
|
---|
1570 | memory for the expansion as we may still need the rest of the
|
---|
1571 | buffer if we're looking at a target-specific variable. */
|
---|
1572 | val = alloc_value = allocated_variable_expand (val);
|
---|
1573 |
|
---|
1574 | oldlen = strlen (v->value);
|
---|
1575 | vallen = strlen (val);
|
---|
1576 | tp = alloca (oldlen + 1 + vallen + 1);
|
---|
1577 | # ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
---|
1578 | if (org_flavor == f_prepend)
|
---|
1579 | {
|
---|
1580 | memcpy (tp, val, vallen);
|
---|
1581 | tp[oldlen] = ' ';
|
---|
1582 | memcpy (&tp[oldlen + 1], v->value, oldlen + 1);
|
---|
1583 | }
|
---|
1584 | else
|
---|
1585 | # endif /* CONFIG_WITH_PREPEND_ASSIGNMENT */
|
---|
1586 | {
|
---|
1587 | memcpy (tp, v->value, oldlen);
|
---|
1588 | tp[oldlen] = ' ';
|
---|
1589 | memcpy (&tp[oldlen + 1], val, vallen + 1);
|
---|
1590 | }
|
---|
1591 | p = tp;
|
---|
1592 | #endif /* !CONFIG_WITH_VALUE_LENGTH */
|
---|
1593 | }
|
---|
1594 | }
|
---|
1595 | }
|
---|
1596 |
|
---|
1597 | #ifdef __MSDOS__
|
---|
1598 | /* Many Unix Makefiles include a line saying "SHELL=/bin/sh", but
|
---|
1599 | non-Unix systems don't conform to this default configuration (in
|
---|
1600 | fact, most of them don't even have `/bin'). On the other hand,
|
---|
1601 | $SHELL in the environment, if set, points to the real pathname of
|
---|
1602 | the shell.
|
---|
1603 | Therefore, we generally won't let lines like "SHELL=/bin/sh" from
|
---|
1604 | the Makefile override $SHELL from the environment. But first, we
|
---|
1605 | look for the basename of the shell in the directory where SHELL=
|
---|
1606 | points, and along the $PATH; if it is found in any of these places,
|
---|
1607 | we define $SHELL to be the actual pathname of the shell. Thus, if
|
---|
1608 | you have bash.exe installed as d:/unix/bash.exe, and d:/unix is on
|
---|
1609 | your $PATH, then SHELL=/usr/local/bin/bash will have the effect of
|
---|
1610 | defining SHELL to be "d:/unix/bash.exe". */
|
---|
1611 | if ((origin == o_file || origin == o_override)
|
---|
1612 | && strcmp (varname, "SHELL") == 0)
|
---|
1613 | {
|
---|
1614 | PATH_VAR (shellpath);
|
---|
1615 | extern char * __dosexec_find_on_path (const char *, char *[], char *);
|
---|
1616 |
|
---|
1617 | /* See if we can find "/bin/sh.exe", "/bin/sh.com", etc. */
|
---|
1618 | if (__dosexec_find_on_path (p, NULL, shellpath))
|
---|
1619 | {
|
---|
1620 | char *tp;
|
---|
1621 |
|
---|
1622 | for (tp = shellpath; *tp; tp++)
|
---|
1623 | if (*tp == '\\')
|
---|
1624 | *tp = '/';
|
---|
1625 |
|
---|
1626 | v = define_variable_loc (varname, varname_len,
|
---|
1627 | shellpath, origin, flavor == f_recursive,
|
---|
1628 | flocp);
|
---|
1629 | }
|
---|
1630 | else
|
---|
1631 | {
|
---|
1632 | const char *shellbase, *bslash;
|
---|
1633 | struct variable *pathv = lookup_variable ("PATH", 4);
|
---|
1634 | char *path_string;
|
---|
1635 | char *fake_env[2];
|
---|
1636 | size_t pathlen = 0;
|
---|
1637 |
|
---|
1638 | shellbase = strrchr (p, '/');
|
---|
1639 | bslash = strrchr (p, '\\');
|
---|
1640 | if (!shellbase || bslash > shellbase)
|
---|
1641 | shellbase = bslash;
|
---|
1642 | if (!shellbase && p[1] == ':')
|
---|
1643 | shellbase = p + 1;
|
---|
1644 | if (shellbase)
|
---|
1645 | shellbase++;
|
---|
1646 | else
|
---|
1647 | shellbase = p;
|
---|
1648 |
|
---|
1649 | /* Search for the basename of the shell (with standard
|
---|
1650 | executable extensions) along the $PATH. */
|
---|
1651 | if (pathv)
|
---|
1652 | pathlen = strlen (pathv->value);
|
---|
1653 | path_string = xmalloc (5 + pathlen + 2 + 1);
|
---|
1654 | /* On MSDOS, current directory is considered as part of $PATH. */
|
---|
1655 | sprintf (path_string, "PATH=.;%s", pathv ? pathv->value : "");
|
---|
1656 | fake_env[0] = path_string;
|
---|
1657 | fake_env[1] = 0;
|
---|
1658 | if (__dosexec_find_on_path (shellbase, fake_env, shellpath))
|
---|
1659 | {
|
---|
1660 | char *tp;
|
---|
1661 |
|
---|
1662 | for (tp = shellpath; *tp; tp++)
|
---|
1663 | if (*tp == '\\')
|
---|
1664 | *tp = '/';
|
---|
1665 |
|
---|
1666 | v = define_variable_loc (varname, varname_len,
|
---|
1667 | shellpath, origin,
|
---|
1668 | flavor == f_recursive, flocp);
|
---|
1669 | }
|
---|
1670 | else
|
---|
1671 | v = lookup_variable (varname, varname_len);
|
---|
1672 |
|
---|
1673 | free (path_string);
|
---|
1674 | }
|
---|
1675 | }
|
---|
1676 | else
|
---|
1677 | #endif /* __MSDOS__ */
|
---|
1678 | #ifdef WINDOWS32
|
---|
1679 | if ( varname_len == sizeof("SHELL") - 1 /* bird */
|
---|
1680 | && (origin == o_file || origin == o_override || origin == o_command)
|
---|
1681 | && streq (varname, "SHELL"))
|
---|
1682 | {
|
---|
1683 | extern char *default_shell;
|
---|
1684 |
|
---|
1685 | /* Call shell locator function. If it returns TRUE, then
|
---|
1686 | set no_default_sh_exe to indicate sh was found and
|
---|
1687 | set new value for SHELL variable. */
|
---|
1688 |
|
---|
1689 | if (find_and_set_default_shell (p))
|
---|
1690 | {
|
---|
1691 | v = define_variable_in_set (varname, varname_len, default_shell,
|
---|
1692 | # ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1693 | ~0U, 1 /* duplicate_value */,
|
---|
1694 | # endif
|
---|
1695 | origin, flavor == f_recursive,
|
---|
1696 | (target_var
|
---|
1697 | ? current_variable_set_list->set
|
---|
1698 | : NULL),
|
---|
1699 | flocp);
|
---|
1700 | no_default_sh_exe = 0;
|
---|
1701 | }
|
---|
1702 | else
|
---|
1703 | v = lookup_variable (varname, varname_len);
|
---|
1704 | # ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1705 | if (alloc_value)
|
---|
1706 | free (alloc_value);
|
---|
1707 | # endif
|
---|
1708 | }
|
---|
1709 | else
|
---|
1710 | #endif
|
---|
1711 |
|
---|
1712 | /* If we are defining variables inside an $(eval ...), we might have a
|
---|
1713 | different variable context pushed, not the global context (maybe we're
|
---|
1714 | inside a $(call ...) or something. Since this function is only ever
|
---|
1715 | invoked in places where we want to define globally visible variables,
|
---|
1716 | make sure we define this variable in the global set. */
|
---|
1717 |
|
---|
1718 | v = define_variable_in_set (varname, varname_len, p,
|
---|
1719 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1720 | value_len, !alloc_value,
|
---|
1721 | #endif
|
---|
1722 | origin, flavor == f_recursive,
|
---|
1723 | (target_var
|
---|
1724 | ? current_variable_set_list->set : NULL),
|
---|
1725 | flocp);
|
---|
1726 | v->append = append;
|
---|
1727 | v->conditional = conditional;
|
---|
1728 |
|
---|
1729 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
---|
1730 | if (alloc_value)
|
---|
1731 | free (alloc_value);
|
---|
1732 | #endif
|
---|
1733 |
|
---|
1734 | return v;
|
---|
1735 | }
|
---|
1736 | |
---|
1737 |
|
---|
1738 | /* Try to interpret LINE (a null-terminated string) as a variable definition.
|
---|
1739 |
|
---|
1740 | ORIGIN may be o_file, o_override, o_env, o_env_override,
|
---|
1741 | or o_command specifying that the variable definition comes
|
---|
1742 | from a makefile, an override directive, the environment with
|
---|
1743 | or without the -e switch, or the command line.
|
---|
1744 |
|
---|
1745 | See the comments for parse_variable_definition().
|
---|
1746 |
|
---|
1747 | If LINE was recognized as a variable definition, a pointer to its `struct
|
---|
1748 | variable' is returned. If LINE is not a variable definition, NULL is
|
---|
1749 | returned. */
|
---|
1750 |
|
---|
1751 | struct variable *
|
---|
1752 | parse_variable_definition (struct variable *v, char *line)
|
---|
1753 | {
|
---|
1754 | register int c;
|
---|
1755 | register char *p = line;
|
---|
1756 | register char *beg;
|
---|
1757 | register char *end;
|
---|
1758 | enum variable_flavor flavor = f_bogus;
|
---|
1759 | char *name;
|
---|
1760 |
|
---|
1761 | while (1)
|
---|
1762 | {
|
---|
1763 | c = *p++;
|
---|
1764 | if (c == '\0' || c == '#')
|
---|
1765 | return 0;
|
---|
1766 | if (c == '=')
|
---|
1767 | {
|
---|
1768 | end = p - 1;
|
---|
1769 | flavor = f_recursive;
|
---|
1770 | break;
|
---|
1771 | }
|
---|
1772 | else if (c == ':')
|
---|
1773 | if (*p == '=')
|
---|
1774 | {
|
---|
1775 | end = p++ - 1;
|
---|
1776 | flavor = f_simple;
|
---|
1777 | break;
|
---|
1778 | }
|
---|
1779 | else
|
---|
1780 | /* A colon other than := is a rule line, not a variable defn. */
|
---|
1781 | return 0;
|
---|
1782 | else if (c == '+' && *p == '=')
|
---|
1783 | {
|
---|
1784 | end = p++ - 1;
|
---|
1785 | flavor = f_append;
|
---|
1786 | break;
|
---|
1787 | }
|
---|
1788 | #ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
---|
1789 | else if (c == '<' && *p == '=')
|
---|
1790 | {
|
---|
1791 | end = p++ - 1;
|
---|
1792 | flavor = f_prepend;
|
---|
1793 | break;
|
---|
1794 | }
|
---|
1795 | #endif
|
---|
1796 | else if (c == '?' && *p == '=')
|
---|
1797 | {
|
---|
1798 | end = p++ - 1;
|
---|
1799 | flavor = f_conditional;
|
---|
1800 | break;
|
---|
1801 | }
|
---|
1802 | else if (c == '$')
|
---|
1803 | {
|
---|
1804 | /* This might begin a variable expansion reference. Make sure we
|
---|
1805 | don't misrecognize chars inside the reference as =, := or +=. */
|
---|
1806 | char closeparen;
|
---|
1807 | int count;
|
---|
1808 | c = *p++;
|
---|
1809 | if (c == '(')
|
---|
1810 | closeparen = ')';
|
---|
1811 | else if (c == '{')
|
---|
1812 | closeparen = '}';
|
---|
1813 | else
|
---|
1814 | continue; /* Nope. */
|
---|
1815 |
|
---|
1816 | /* P now points past the opening paren or brace.
|
---|
1817 | Count parens or braces until it is matched. */
|
---|
1818 | count = 0;
|
---|
1819 | for (; *p != '\0'; ++p)
|
---|
1820 | {
|
---|
1821 | if (*p == c)
|
---|
1822 | ++count;
|
---|
1823 | else if (*p == closeparen && --count < 0)
|
---|
1824 | {
|
---|
1825 | ++p;
|
---|
1826 | break;
|
---|
1827 | }
|
---|
1828 | }
|
---|
1829 | }
|
---|
1830 | }
|
---|
1831 | v->flavor = flavor;
|
---|
1832 |
|
---|
1833 | beg = next_token (line);
|
---|
1834 | while (end > beg && isblank ((unsigned char)end[-1]))
|
---|
1835 | --end;
|
---|
1836 | p = next_token (p);
|
---|
1837 | v->value = p;
|
---|
1838 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
---|
1839 | v->value_length = v->value_alloc_len = -1;
|
---|
1840 | #endif
|
---|
1841 |
|
---|
1842 | /* Expand the name, so "$(foo)bar = baz" works. */
|
---|
1843 | name = alloca (end - beg + 1);
|
---|
1844 | memcpy (name, beg, end - beg);
|
---|
1845 | name[end - beg] = '\0';
|
---|
1846 | v->name = allocated_variable_expand (name);
|
---|
1847 |
|
---|
1848 | if (v->name[0] == '\0')
|
---|
1849 | fatal (&v->fileinfo, _("empty variable name"));
|
---|
1850 |
|
---|
1851 | return v;
|
---|
1852 | }
|
---|
1853 | |
---|
1854 |
|
---|
1855 | /* Try to interpret LINE (a null-terminated string) as a variable definition.
|
---|
1856 |
|
---|
1857 | ORIGIN may be o_file, o_override, o_env, o_env_override,
|
---|
1858 | or o_command specifying that the variable definition comes
|
---|
1859 | from a makefile, an override directive, the environment with
|
---|
1860 | or without the -e switch, or the command line.
|
---|
1861 |
|
---|
1862 | See the comments for parse_variable_definition().
|
---|
1863 |
|
---|
1864 | If LINE was recognized as a variable definition, a pointer to its `struct
|
---|
1865 | variable' is returned. If LINE is not a variable definition, NULL is
|
---|
1866 | returned. */
|
---|
1867 |
|
---|
1868 | struct variable *
|
---|
1869 | try_variable_definition (const struct floc *flocp, char *line,
|
---|
1870 | enum variable_origin origin, int target_var)
|
---|
1871 | {
|
---|
1872 | struct variable v;
|
---|
1873 | struct variable *vp;
|
---|
1874 |
|
---|
1875 | if (flocp != 0)
|
---|
1876 | v.fileinfo = *flocp;
|
---|
1877 | else
|
---|
1878 | v.fileinfo.filenm = 0;
|
---|
1879 |
|
---|
1880 | if (!parse_variable_definition (&v, line))
|
---|
1881 | return 0;
|
---|
1882 |
|
---|
1883 | vp = do_variable_definition (flocp, v.name, v.value,
|
---|
1884 | origin, v.flavor, target_var);
|
---|
1885 |
|
---|
1886 | free (v.name);
|
---|
1887 |
|
---|
1888 | return vp;
|
---|
1889 | }
|
---|
1890 | |
---|
1891 |
|
---|
1892 | /* Print information for variable V, prefixing it with PREFIX. */
|
---|
1893 |
|
---|
1894 | static void
|
---|
1895 | print_variable (const void *item, void *arg)
|
---|
1896 | {
|
---|
1897 | const struct variable *v = item;
|
---|
1898 | const char *prefix = arg;
|
---|
1899 | const char *origin;
|
---|
1900 |
|
---|
1901 | switch (v->origin)
|
---|
1902 | {
|
---|
1903 | case o_default:
|
---|
1904 | origin = _("default");
|
---|
1905 | break;
|
---|
1906 | case o_env:
|
---|
1907 | origin = _("environment");
|
---|
1908 | break;
|
---|
1909 | case o_file:
|
---|
1910 | origin = _("makefile");
|
---|
1911 | break;
|
---|
1912 | case o_env_override:
|
---|
1913 | origin = _("environment under -e");
|
---|
1914 | break;
|
---|
1915 | case o_command:
|
---|
1916 | origin = _("command line");
|
---|
1917 | break;
|
---|
1918 | case o_override:
|
---|
1919 | origin = _("`override' directive");
|
---|
1920 | break;
|
---|
1921 | case o_automatic:
|
---|
1922 | origin = _("automatic");
|
---|
1923 | break;
|
---|
1924 | case o_invalid:
|
---|
1925 | default:
|
---|
1926 | abort ();
|
---|
1927 | }
|
---|
1928 | fputs ("# ", stdout);
|
---|
1929 | fputs (origin, stdout);
|
---|
1930 | if (v->fileinfo.filenm)
|
---|
1931 | printf (_(" (from `%s', line %lu)"),
|
---|
1932 | v->fileinfo.filenm, v->fileinfo.lineno);
|
---|
1933 | putchar ('\n');
|
---|
1934 | fputs (prefix, stdout);
|
---|
1935 |
|
---|
1936 | /* Is this a `define'? */
|
---|
1937 | if (v->recursive && strchr (v->value, '\n') != 0)
|
---|
1938 | printf ("define %s\n%s\nendef\n", v->name, v->value);
|
---|
1939 | else
|
---|
1940 | {
|
---|
1941 | register char *p;
|
---|
1942 |
|
---|
1943 | printf ("%s %s= ", v->name, v->recursive ? v->append ? "+" : "" : ":");
|
---|
1944 |
|
---|
1945 | /* Check if the value is just whitespace. */
|
---|
1946 | p = next_token (v->value);
|
---|
1947 | if (p != v->value && *p == '\0')
|
---|
1948 | /* All whitespace. */
|
---|
1949 | printf ("$(subst ,,%s)", v->value);
|
---|
1950 | else if (v->recursive)
|
---|
1951 | fputs (v->value, stdout);
|
---|
1952 | else
|
---|
1953 | /* Double up dollar signs. */
|
---|
1954 | for (p = v->value; *p != '\0'; ++p)
|
---|
1955 | {
|
---|
1956 | if (*p == '$')
|
---|
1957 | putchar ('$');
|
---|
1958 | putchar (*p);
|
---|
1959 | }
|
---|
1960 | putchar ('\n');
|
---|
1961 | }
|
---|
1962 | }
|
---|
1963 |
|
---|
1964 |
|
---|
1965 | /* Print all the variables in SET. PREFIX is printed before
|
---|
1966 | the actual variable definitions (everything else is comments). */
|
---|
1967 |
|
---|
1968 | void
|
---|
1969 | print_variable_set (struct variable_set *set, char *prefix)
|
---|
1970 | {
|
---|
1971 | hash_map_arg (&set->table, print_variable, prefix);
|
---|
1972 |
|
---|
1973 | fputs (_("# variable set hash-table stats:\n"), stdout);
|
---|
1974 | fputs ("# ", stdout);
|
---|
1975 | hash_print_stats (&set->table, stdout);
|
---|
1976 | putc ('\n', stdout);
|
---|
1977 | }
|
---|
1978 |
|
---|
1979 | /* Print the data base of variables. */
|
---|
1980 |
|
---|
1981 | void
|
---|
1982 | print_variable_data_base (void)
|
---|
1983 | {
|
---|
1984 | puts (_("\n# Variables\n"));
|
---|
1985 |
|
---|
1986 | print_variable_set (&global_variable_set, "");
|
---|
1987 |
|
---|
1988 | puts (_("\n# Pattern-specific Variable Values"));
|
---|
1989 |
|
---|
1990 | {
|
---|
1991 | struct pattern_var *p;
|
---|
1992 | int rules = 0;
|
---|
1993 |
|
---|
1994 | for (p = pattern_vars; p != 0; p = p->next)
|
---|
1995 | {
|
---|
1996 | ++rules;
|
---|
1997 | printf ("\n%s :\n", p->target);
|
---|
1998 | print_variable (&p->variable, "# ");
|
---|
1999 | }
|
---|
2000 |
|
---|
2001 | if (rules == 0)
|
---|
2002 | puts (_("\n# No pattern-specific variable values."));
|
---|
2003 | else
|
---|
2004 | printf (_("\n# %u pattern-specific variable values"), rules);
|
---|
2005 | }
|
---|
2006 | }
|
---|
2007 |
|
---|
2008 |
|
---|
2009 | /* Print all the local variables of FILE. */
|
---|
2010 |
|
---|
2011 | void
|
---|
2012 | print_file_variables (const struct file *file)
|
---|
2013 | {
|
---|
2014 | if (file->variables != 0)
|
---|
2015 | print_variable_set (file->variables->set, "# ");
|
---|
2016 | }
|
---|
2017 |
|
---|
2018 | #ifdef WINDOWS32
|
---|
2019 | void
|
---|
2020 | sync_Path_environment (void)
|
---|
2021 | {
|
---|
2022 | char *path = allocated_variable_expand ("$(PATH)");
|
---|
2023 | static char *environ_path = NULL;
|
---|
2024 |
|
---|
2025 | if (!path)
|
---|
2026 | return;
|
---|
2027 |
|
---|
2028 | /*
|
---|
2029 | * If done this before, don't leak memory unnecessarily.
|
---|
2030 | * Free the previous entry before allocating new one.
|
---|
2031 | */
|
---|
2032 | if (environ_path)
|
---|
2033 | free (environ_path);
|
---|
2034 |
|
---|
2035 | /*
|
---|
2036 | * Create something WINDOWS32 world can grok
|
---|
2037 | */
|
---|
2038 | convert_Path_to_windows32 (path, ';');
|
---|
2039 | environ_path = xstrdup (concat ("PATH", "=", path));
|
---|
2040 | putenv (environ_path);
|
---|
2041 | free (path);
|
---|
2042 | }
|
---|
2043 | #endif
|
---|