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annotate m4/mbsrtowcs.m4 @ 15033:7539219da429

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mbsrtowcs: Move AC_LIBOBJ invocations to module description. * m4/mbsrtowcs.m4 (gl_FUNC_MBSRTOWCS): Move AC_LIBOBJ and gl_PREREQ_MBSRTOWCS invocations from here... * modules/mbsrtowcs (configure.ac): ... to here.
author Bruno Haible <bruno@clisp.org>
date Sat, 21 May 2011 14:24:51 +0200
parents f7f11056a86e
children 1aca03539329
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
15033
7539219da429 mbsrtowcs: Move AC_LIBOBJ invocations to module description.
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1 # mbsrtowcs.m4 serial 12
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2 dnl Copyright (C) 2008-2011 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 AC_DEFUN([gl_FUNC_MBSRTOWCS],
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8 [
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9 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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10
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11 AC_REQUIRE([AC_TYPE_MBSTATE_T])
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12 gl_MBSTATE_T_BROKEN
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13
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14 AC_CHECK_FUNCS_ONCE([mbsrtowcs])
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15 if test $ac_cv_func_mbsrtowcs = no; then
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16 HAVE_MBSRTOWCS=0
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17 else
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18 if test $REPLACE_MBSTATE_T = 1; then
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19 REPLACE_MBSRTOWCS=1
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20 else
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21 gl_MBSRTOWCS_WORKS
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22 case "$gl_cv_func_mbsrtowcs_works" in
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23 *yes) ;;
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24 *) REPLACE_MBSRTOWCS=1 ;;
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25 esac
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26 fi
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27 fi
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28 ])
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29
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30 dnl Test whether mbsrtowcs works.
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31 dnl Result is gl_cv_func_mbsrtowcs_works.
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32
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33 AC_DEFUN([gl_MBSRTOWCS_WORKS],
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34 [
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35 AC_REQUIRE([AC_PROG_CC])
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36 AC_REQUIRE([gt_LOCALE_FR])
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37 AC_REQUIRE([gt_LOCALE_FR_UTF8])
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38 AC_REQUIRE([gt_LOCALE_JA])
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39 AC_REQUIRE([gt_LOCALE_ZH_CN])
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40 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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41 AC_CACHE_CHECK([whether mbsrtowcs works],
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42 [gl_cv_func_mbsrtowcs_works],
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43 [
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44 dnl Initial guess, used when cross-compiling or when no suitable locale
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45 dnl is present.
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46 changequote(,)dnl
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47 case "$host_os" in
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48 # Guess no on HP-UX, Solaris, mingw.
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49 hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;;
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50 # Guess yes otherwise.
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51 *) gl_cv_func_mbsrtowcs_works="guessing yes" ;;
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52 esac
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53 changequote([,])dnl
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54 if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
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55 AC_RUN_IFELSE(
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56 [AC_LANG_SOURCE([[
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57 #include <locale.h>
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58 #include <string.h>
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59 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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60 <wchar.h>.
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61 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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62 included before <wchar.h>. */
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63 #include <stddef.h>
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64 #include <stdio.h>
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65 #include <time.h>
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66 #include <wchar.h>
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67 int main ()
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68 {
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69 int result = 0;
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70 /* Test whether the function supports a NULL destination argument.
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71 This fails on native Windows. */
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72 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
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73 {
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74 const char input[] = "\337er";
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75 const char *src = input;
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76 mbstate_t state;
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77
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78 memset (&state, '\0', sizeof (mbstate_t));
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79 if (mbsrtowcs (NULL, &src, 1, &state) != 3
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80 || src != input)
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81 result |= 1;
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82 }
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83 /* Test whether the function works when started with a conversion state
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84 in non-initial state. This fails on HP-UX 11.11 and Solaris 10. */
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85 if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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86 {
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87 const char input[] = "B\303\274\303\237er";
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88 mbstate_t state;
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89
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90 memset (&state, '\0', sizeof (mbstate_t));
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91 if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
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92 if (!mbsinit (&state))
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93 {
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94 const char *src = input + 2;
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95 if (mbsrtowcs (NULL, &src, 10, &state) != 4)
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96 result |= 2;
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97 }
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98 }
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99 if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
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100 {
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101 const char input[] = "<\306\374\313\334\270\354>";
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102 mbstate_t state;
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103
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104 memset (&state, '\0', sizeof (mbstate_t));
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105 if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2))
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106 if (!mbsinit (&state))
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107 {
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108 const char *src = input + 4;
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109 if (mbsrtowcs (NULL, &src, 10, &state) != 3)
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110 result |= 4;
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111 }
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112 }
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113 if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
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114 {
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115 const char input[] = "B\250\271\201\060\211\070er";
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116 mbstate_t state;
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117
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118 memset (&state, '\0', sizeof (mbstate_t));
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119 if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2))
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120 if (!mbsinit (&state))
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121 {
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122 const char *src = input + 2;
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123 if (mbsrtowcs (NULL, &src, 10, &state) != 4)
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124 result |= 8;
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125 }
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126 }
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127 return result;
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128 }]])],
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129 [gl_cv_func_mbsrtowcs_works=yes],
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130 [gl_cv_func_mbsrtowcs_works=no],
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131 [:])
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132 fi
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133 ])
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134 ])
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135
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136 # Prerequisites of lib/mbsrtowcs.c.
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137 AC_DEFUN([gl_PREREQ_MBSRTOWCS], [
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138 :
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139 ])