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annotate m4/iconv.m4 @ 386:f1f9920cc7b1

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Add AM_GNU_GETTEXT macros AM_ICONV relies on config.rpath and autopoint/gettextize will only copy these in when the AM_GNU_GETTEXT macros are present. This is needed for the next commit that deletes config.rpath since it is cruft that should be copied in by autotools not embedded. Run autopoint to copy in config.rpath and leave it to automake to copy into the tarball.
author Paul Wise <pabs3@bonedaddy.net>
date Sat, 21 Dec 2019 21:25:44 +0800
parents 0b1766da9be8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
153
0b1766da9be8 use AM_ICONV for better portability of the library location.
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1 # iconv.m4 serial AM7 (gettext-0.18)
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2 dnl Copyright (C) 2000-2002, 2007-2009 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 dnl From Bruno Haible.
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8
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9 AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
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10 [
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11 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
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12 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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13 AC_REQUIRE([AC_LIB_RPATH])
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14
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15 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
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16 dnl accordingly.
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17 AC_LIB_LINKFLAGS_BODY([iconv])
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18 ])
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19
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20 AC_DEFUN([AM_ICONV_LINK],
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21 [
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22 dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
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23 dnl those with the standalone portable GNU libiconv installed).
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24 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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25
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26 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
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27 dnl accordingly.
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28 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
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29
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30 dnl Add $INCICONV to CPPFLAGS before performing the following checks,
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31 dnl because if the user has installed libiconv and not disabled its use
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32 dnl via --without-libiconv-prefix, he wants to use it. The first
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33 dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
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34 am_save_CPPFLAGS="$CPPFLAGS"
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35 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
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36
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37 AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
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38 am_cv_func_iconv="no, consider installing GNU libiconv"
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39 am_cv_lib_iconv=no
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40 AC_TRY_LINK([#include <stdlib.h>
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41 #include <iconv.h>],
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42 [iconv_t cd = iconv_open("","");
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43 iconv(cd,NULL,NULL,NULL,NULL);
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44 iconv_close(cd);],
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45 [am_cv_func_iconv=yes])
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46 if test "$am_cv_func_iconv" != yes; then
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47 am_save_LIBS="$LIBS"
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48 LIBS="$LIBS $LIBICONV"
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49 AC_TRY_LINK([#include <stdlib.h>
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50 #include <iconv.h>],
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51 [iconv_t cd = iconv_open("","");
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52 iconv(cd,NULL,NULL,NULL,NULL);
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53 iconv_close(cd);],
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54 [am_cv_lib_iconv=yes]
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55 [am_cv_func_iconv=yes])
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56 LIBS="$am_save_LIBS"
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57 fi
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58 ])
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59 if test "$am_cv_func_iconv" = yes; then
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60 AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
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61 dnl This tests against bugs in AIX 5.1 and HP-UX 11.11.
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62 am_save_LIBS="$LIBS"
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63 if test $am_cv_lib_iconv = yes; then
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64 LIBS="$LIBS $LIBICONV"
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65 fi
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66 AC_TRY_RUN([
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67 #include <iconv.h>
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68 #include <string.h>
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69 int main ()
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70 {
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71 /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
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72 returns. */
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73 {
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74 iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
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75 if (cd_utf8_to_88591 != (iconv_t)(-1))
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76 {
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77 static const char input[] = "\342\202\254"; /* EURO SIGN */
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78 char buf[10];
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79 const char *inptr = input;
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80 size_t inbytesleft = strlen (input);
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81 char *outptr = buf;
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82 size_t outbytesleft = sizeof (buf);
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83 size_t res = iconv (cd_utf8_to_88591,
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84 (char **) &inptr, &inbytesleft,
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85 &outptr, &outbytesleft);
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86 if (res == 0)
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87 return 1;
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88 }
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89 }
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90 #if 0 /* This bug could be worked around by the caller. */
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91 /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
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92 {
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93 iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
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94 if (cd_88591_to_utf8 != (iconv_t)(-1))
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95 {
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96 static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
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97 char buf[50];
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98 const char *inptr = input;
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99 size_t inbytesleft = strlen (input);
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100 char *outptr = buf;
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101 size_t outbytesleft = sizeof (buf);
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102 size_t res = iconv (cd_88591_to_utf8,
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103 (char **) &inptr, &inbytesleft,
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104 &outptr, &outbytesleft);
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105 if ((int)res > 0)
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106 return 1;
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107 }
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108 }
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109 #endif
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110 /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
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111 provided. */
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112 if (/* Try standardized names. */
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113 iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
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114 /* Try IRIX, OSF/1 names. */
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115 && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
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116 /* Try AIX names. */
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117 && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
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118 /* Try HP-UX names. */
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119 && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
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120 return 1;
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121 return 0;
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122 }], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no],
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123 [case "$host_os" in
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124 aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
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125 *) am_cv_func_iconv_works="guessing yes" ;;
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126 esac])
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127 LIBS="$am_save_LIBS"
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128 ])
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129 case "$am_cv_func_iconv_works" in
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130 *no) am_func_iconv=no am_cv_lib_iconv=no ;;
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131 *) am_func_iconv=yes ;;
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132 esac
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133 else
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134 am_func_iconv=no am_cv_lib_iconv=no
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135 fi
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136 if test "$am_func_iconv" = yes; then
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137 AC_DEFINE([HAVE_ICONV], [1],
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138 [Define if you have the iconv() function and it works.])
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139 fi
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140 if test "$am_cv_lib_iconv" = yes; then
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141 AC_MSG_CHECKING([how to link with libiconv])
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142 AC_MSG_RESULT([$LIBICONV])
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143 else
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144 dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
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145 dnl either.
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146 CPPFLAGS="$am_save_CPPFLAGS"
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147 LIBICONV=
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148 LTLIBICONV=
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149 fi
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150 AC_SUBST([LIBICONV])
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151 AC_SUBST([LTLIBICONV])
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152 ])
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153
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154 AC_DEFUN([AM_ICONV],
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155 [
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156 AM_ICONV_LINK
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157 if test "$am_cv_func_iconv" = yes; then
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158 AC_MSG_CHECKING([for iconv declaration])
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159 AC_CACHE_VAL([am_cv_proto_iconv], [
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160 AC_TRY_COMPILE([
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161 #include <stdlib.h>
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162 #include <iconv.h>
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163 extern
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164 #ifdef __cplusplus
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165 "C"
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166 #endif
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167 #if defined(__STDC__) || defined(__cplusplus)
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168 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
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169 #else
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170 size_t iconv();
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171 #endif
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172 ], [], [am_cv_proto_iconv_arg1=""], [am_cv_proto_iconv_arg1="const"])
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173 am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
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174 am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
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175 AC_MSG_RESULT([${ac_t:-
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176 }$am_cv_proto_iconv])
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177 AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
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178 [Define as const if the declaration of iconv() needs const.])
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179 fi
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180 ])