1 | # iconv.m4 serial 11 (gettext-0.18.1) |
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2 | dnl Copyright (C) 2000-2002, 2007-2010 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 "$am_cv_func_iconv" = yes; then |
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60 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ |
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61 | dnl This tests against bugs in AIX 5.1, HP-UX 11.11, Solaris 10. |
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62 | am_save_LIBS="$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 | /* Test against Solaris 10 bug: Failures are not distinguishable from |
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91 | successful returns. */ |
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92 | { |
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93 | iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646"); |
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94 | if (cd_ascii_to_88591 != (iconv_t)(-1)) |
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95 | { |
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96 | static const char input[] = "\263"; |
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97 | char buf[10]; |
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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_ascii_to_88591, |
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103 | (char **) &inptr, &inbytesleft, |
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104 | &outptr, &outbytesleft); |
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105 | if (res == 0) |
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106 | return 1; |
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107 | } |
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108 | } |
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109 | #if 0 /* This bug could be worked around by the caller. */ |
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110 | /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */ |
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111 | { |
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112 | iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); |
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113 | if (cd_88591_to_utf8 != (iconv_t)(-1)) |
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114 | { |
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115 | static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; |
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116 | char buf[50]; |
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117 | const char *inptr = input; |
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118 | size_t inbytesleft = strlen (input); |
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119 | char *outptr = buf; |
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120 | size_t outbytesleft = sizeof (buf); |
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121 | size_t res = iconv (cd_88591_to_utf8, |
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122 | (char **) &inptr, &inbytesleft, |
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123 | &outptr, &outbytesleft); |
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124 | if ((int)res > 0) |
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125 | return 1; |
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126 | } |
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127 | } |
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128 | #endif |
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129 | /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is |
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130 | provided. */ |
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131 | if (/* Try standardized names. */ |
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132 | iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1) |
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133 | /* Try IRIX, OSF/1 names. */ |
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134 | && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1) |
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135 | /* Try AIX names. */ |
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136 | && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1) |
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137 | /* Try HP-UX names. */ |
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138 | && iconv_open ("utf8", "eucJP") == (iconv_t)(-1)) |
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139 | return 1; |
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140 | return 0; |
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141 | }], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no], |
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142 | [case "$host_os" in |
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143 | aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; |
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144 | *) am_cv_func_iconv_works="guessing yes" ;; |
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145 | esac]) |
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146 | LIBS="$am_save_LIBS" |
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147 | ]) |
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148 | case "$am_cv_func_iconv_works" in |
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149 | *no) am_func_iconv=no am_cv_lib_iconv=no ;; |
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150 | *) am_func_iconv=yes ;; |
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151 | esac |
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152 | else |
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153 | am_func_iconv=no am_cv_lib_iconv=no |
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154 | fi |
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155 | if test "$am_func_iconv" = yes; then |
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156 | AC_DEFINE([HAVE_ICONV], [1], |
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157 | [Define if you have the iconv() function and it works.]) |
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158 | fi |
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159 | if test "$am_cv_lib_iconv" = yes; then |
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160 | AC_MSG_CHECKING([how to link with libiconv]) |
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161 | AC_MSG_RESULT([$LIBICONV]) |
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162 | else |
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163 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV |
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164 | dnl either. |
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165 | CPPFLAGS="$am_save_CPPFLAGS" |
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166 | LIBICONV= |
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167 | LTLIBICONV= |
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168 | fi |
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169 | AC_SUBST([LIBICONV]) |
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170 | AC_SUBST([LTLIBICONV]) |
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171 | ]) |
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172 | |
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173 | dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to |
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174 | dnl avoid warnings like |
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175 | dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". |
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176 | dnl This is tricky because of the way 'aclocal' is implemented: |
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177 | dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. |
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178 | dnl Otherwise aclocal's initial scan pass would miss the macro definition. |
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179 | dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. |
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180 | dnl Otherwise aclocal would emit many "Use of uninitialized value $1" |
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181 | dnl warnings. |
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182 | m4_define([gl_iconv_AC_DEFUN], |
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183 | m4_version_prereq([2.64], |
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184 | [[AC_DEFUN_ONCE( |
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185 | [$1], [$2])]], |
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186 | [[AC_DEFUN( |
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187 | [$1], [$2])]])) |
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188 | gl_iconv_AC_DEFUN([AM_ICONV], |
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189 | [ |
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190 | AM_ICONV_LINK |
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191 | if test "$am_cv_func_iconv" = yes; then |
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192 | AC_MSG_CHECKING([for iconv declaration]) |
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193 | AC_CACHE_VAL([am_cv_proto_iconv], [ |
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194 | AC_TRY_COMPILE([ |
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195 | #include <stdlib.h> |
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196 | #include <iconv.h> |
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197 | extern |
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198 | #ifdef __cplusplus |
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199 | "C" |
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200 | #endif |
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201 | #if defined(__STDC__) || defined(__cplusplus) |
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202 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
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203 | #else |
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204 | size_t iconv(); |
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205 | #endif |
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206 | ], [], [am_cv_proto_iconv_arg1=""], [am_cv_proto_iconv_arg1="const"]) |
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207 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
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208 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
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209 | AC_MSG_RESULT([ |
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210 | $am_cv_proto_iconv]) |
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211 | AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], |
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212 | [Define as const if the declaration of iconv() needs const.]) |
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213 | fi |
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214 | ]) |
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