1 | dnl RACOON_PATH_LIBS(FUNCTION, LIB, SEARCH-PATHS [, ACTION-IF-FOUND |
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2 | dnl [, ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]]) |
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3 | dnl Search for a library defining FUNC, if it's not already available. |
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4 | |
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5 | AC_DEFUN([RACOON_PATH_LIBS], |
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6 | [AC_PREREQ([2.13]) |
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7 | AC_CACHE_CHECK([for $2 containing $1], [ac_cv_search_$1], |
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8 | [ac_func_search_save_LIBS="$LIBS" |
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9 | ac_cv_search_$1="no" |
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10 | AC_TRY_LINK_FUNC([$1], [ac_cv_search_$1="none required"], |
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11 | [LIBS="-l$2 $LIBS" |
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12 | AC_TRY_LINK_FUNC([$1], [ac_cv_search_$1="-l$2"], [])]) |
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13 | LIBS="$ac_func_search_save_LIBS" |
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14 | ifelse("x$3", "x", , [ test "$ac_cv_search_$1" = "no" && for i in $3; do |
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15 | LIBS="-L$i -l$2 $ac_func_search_save_LIBS" |
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16 | AC_TRY_LINK_FUNC([$1], |
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17 | [ac_cv_search_$1="-L$i -l$2" |
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18 | break]) |
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19 | done |
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20 | LIBS="$ac_func_search_save_LIBS" ]) ]) |
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21 | if test "$ac_cv_search_$1" != "no"; then |
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22 | test "$ac_cv_search_$1" = "none required" || LIBS="$ac_cv_search_$1 $LIBS" |
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23 | $4 |
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24 | else : |
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25 | $5 |
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26 | fi]) |
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27 | |
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28 | dnl Check if either va_copy() or __va_copy() is available. On linux systems |
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29 | dnl at least one of these should be present. |
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30 | AC_DEFUN([RACOON_CHECK_VA_COPY], [ |
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31 | saved_CFLAGS=$CFLAGS |
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32 | CFLAGS="-Wall -O2" |
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33 | AC_CACHE_CHECK([for an implementation of va_copy()], |
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34 | ac_cv_va_copy,[ |
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35 | AC_TRY_RUN([#include <stdarg.h> |
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36 | void func (int i, ...) { |
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37 | va_list args1, args2; |
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38 | va_start (args1, i); |
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39 | va_copy (args2, args1); |
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40 | if (va_arg (args1, int) != 1 || va_arg (args2, int) != 1) |
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41 | exit (1); |
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42 | va_end (args1); |
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43 | va_end (args2); |
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44 | } |
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45 | int main() { |
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46 | func (0, 1); |
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47 | return 0; |
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48 | }], |
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49 | [ac_cv_va_copy=yes], |
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50 | [ac_cv_va_copy=no], |
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51 | AC_MSG_WARN(Cross compiling... Unable to test va_copy) |
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52 | [ac_cv_va_copy=no]) |
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53 | ]) |
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54 | if test x$ac_cv_va_copy != xyes; then |
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55 | AC_CACHE_CHECK([for an implementation of __va_copy()], |
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56 | ac_cv___va_copy,[ |
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57 | AC_TRY_RUN([#include <stdarg.h> |
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58 | void func (int i, ...) { |
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59 | va_list args1, args2; |
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60 | va_start (args1, i); |
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61 | __va_copy (args2, args1); |
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62 | if (va_arg (args1, int) != 1 || va_arg (args2, int) != 1) |
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63 | exit (1); |
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64 | va_end (args1); |
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65 | va_end (args2); |
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66 | } |
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67 | int main() { |
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68 | func (0, 1); |
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69 | return 0; |
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70 | }], |
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71 | [ac_cv___va_copy=yes], |
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72 | [ac_cv___va_copy=no], |
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73 | AC_MSG_WARN(Cross compiling... Unable to test __va_copy) |
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74 | [ac_cv___va_copy=no]) |
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75 | ]) |
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76 | fi |
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77 | |
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78 | if test "x$ac_cv_va_copy" = "xyes"; then |
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79 | va_copy_func=va_copy |
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80 | elif test "x$ac_cv___va_copy" = "xyes"; then |
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81 | va_copy_func=__va_copy |
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82 | fi |
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83 | |
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84 | if test -n "$va_copy_func"; then |
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85 | AC_DEFINE_UNQUOTED(VA_COPY,$va_copy_func, |
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86 | [A 'va_copy' style function]) |
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87 | else |
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88 | AC_MSG_WARN([Hmm, neither va_copy() nor __va_copy() found.]) |
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89 | AC_MSG_WARN([Using a generic fallback.]) |
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90 | fi |
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91 | CFLAGS=$saved_CFLAGS |
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92 | unset saved_CFLAGS |
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93 | ]) |
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94 | |
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95 | AC_DEFUN([RACOON_CHECK_BUGGY_GETADDRINFO], [ |
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96 | AC_MSG_CHECKING(getaddrinfo bug) |
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97 | saved_CFLAGS=$CFLAGS |
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98 | CFLAGS="-Wall -O2" |
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99 | AC_TRY_RUN([ |
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100 | #include <sys/types.h> |
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101 | #include <sys/socket.h> |
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102 | #include <netdb.h> |
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103 | #include <stdlib.h> |
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104 | #include <string.h> |
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105 | #include <netinet/in.h> |
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106 | |
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107 | int main() |
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108 | { |
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109 | int passive, gaierr, inet4 = 0, inet6 = 0; |
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110 | struct addrinfo hints, *ai, *aitop; |
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111 | char straddr[INET6_ADDRSTRLEN], strport[16]; |
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112 | |
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113 | for (passive = 0; passive <= 1; passive++) { |
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114 | memset(&hints, 0, sizeof(hints)); |
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115 | hints.ai_family = AF_UNSPEC; |
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116 | hints.ai_flags = passive ? AI_PASSIVE : 0; |
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117 | hints.ai_protocol = IPPROTO_TCP; |
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118 | hints.ai_socktype = SOCK_STREAM; |
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119 | if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) { |
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120 | (void)gai_strerror(gaierr); |
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121 | goto bad; |
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122 | } |
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123 | for (ai = aitop; ai; ai = ai->ai_next) { |
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124 | if (ai->ai_addr == NULL || |
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125 | ai->ai_addrlen == 0 || |
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126 | getnameinfo(ai->ai_addr, ai->ai_addrlen, |
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127 | straddr, sizeof(straddr), strport, sizeof(strport), |
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128 | NI_NUMERICHOST|NI_NUMERICSERV) != 0) { |
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129 | goto bad; |
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130 | } |
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131 | switch (ai->ai_family) { |
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132 | case AF_INET: |
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133 | if (strcmp(strport, "54321") != 0) { |
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134 | goto bad; |
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135 | } |
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136 | if (passive) { |
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137 | if (strcmp(straddr, "0.0.0.0") != 0) { |
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138 | goto bad; |
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139 | } |
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140 | } else { |
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141 | if (strcmp(straddr, "127.0.0.1") != 0) { |
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142 | goto bad; |
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143 | } |
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144 | } |
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145 | inet4++; |
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146 | break; |
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147 | case AF_INET6: |
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148 | if (strcmp(strport, "54321") != 0) { |
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149 | goto bad; |
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150 | } |
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151 | if (passive) { |
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152 | if (strcmp(straddr, "::") != 0) { |
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153 | goto bad; |
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154 | } |
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155 | } else { |
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156 | if (strcmp(straddr, "::1") != 0) { |
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157 | goto bad; |
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158 | } |
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159 | } |
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160 | inet6++; |
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161 | break; |
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162 | case AF_UNSPEC: |
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163 | goto bad; |
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164 | break; |
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165 | default: |
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166 | /* another family support? */ |
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167 | break; |
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168 | } |
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169 | } |
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170 | } |
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171 | |
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172 | if (!(inet4 == 0 || inet4 == 2)) |
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173 | goto bad; |
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174 | if (!(inet6 == 0 || inet6 == 2)) |
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175 | goto bad; |
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176 | |
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177 | if (aitop) |
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178 | freeaddrinfo(aitop); |
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179 | exit(0); |
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180 | |
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181 | bad: |
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182 | if (aitop) |
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183 | freeaddrinfo(aitop); |
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184 | exit(1); |
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185 | } |
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186 | ], |
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187 | AC_MSG_RESULT(good) |
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188 | buggygetaddrinfo=no, |
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189 | AC_MSG_RESULT(buggy) |
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190 | buggygetaddrinfo=yes, |
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191 | AC_MSG_RESULT(Cross compiling ... Assuming getaddrinfo is not buggy.) |
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192 | buggygetaddrinfo=no) |
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193 | CFLAGS=$saved_CFLAGS |
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194 | unset saved_CFLAGS |
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195 | ]) |
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