1 | # gettext.m4 serial 53.1
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2 | dnl Copyright (C) 1995-2006 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 | dnl
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7 | dnl This file can can be used in projects which are not available under
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8 | dnl the GNU General Public License or the GNU Library General Public
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9 | dnl License but which still want to provide support for the GNU gettext
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10 | dnl functionality.
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11 | dnl Please note that the actual code of the GNU gettext library is covered
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12 | dnl by the GNU Library General Public License, and the rest of the GNU
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13 | dnl gettext package package is covered by the GNU General Public License.
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14 | dnl They are *not* in the public domain.
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15 |
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16 | dnl Authors:
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17 | dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
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18 | dnl Bruno Haible <haible@clisp.cons.org>, 2000-2005.
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19 |
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20 | AC_PREREQ(2.52)
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21 |
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22 | dnl Macro to add for using GNU gettext.
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23 |
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24 | dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
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25 | dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
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26 | dnl default (if it is not specified or empty) is 'no-libtool'.
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27 | dnl INTLSYMBOL should be 'external' for packages with no intl directory,
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28 | dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
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29 | dnl If INTLSYMBOL is 'use-libtool', then a libtool library
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30 | dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
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31 | dnl depending on --{enable,disable}-{shared,static} and on the presence of
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32 | dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
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33 | dnl $(top_builddir)/intl/libintl.a will be created.
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34 | dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
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35 | dnl implementations (in libc or libintl) without the ngettext() function
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36 | dnl will be ignored. If NEEDSYMBOL is specified and is
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37 | dnl 'need-formatstring-macros', then GNU gettext implementations that don't
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38 | dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
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39 | dnl INTLDIR is used to find the intl libraries. If empty,
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40 | dnl the value `$(top_builddir)/intl/' is used.
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41 | dnl
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42 | dnl The result of the configuration is one of three cases:
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43 | dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
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44 | dnl and used.
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45 | dnl Catalog format: GNU --> install in $(datadir)
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46 | dnl Catalog extension: .mo after installation, .gmo in source tree
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47 | dnl 2) GNU gettext has been found in the system's C library.
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48 | dnl Catalog format: GNU --> install in $(datadir)
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49 | dnl Catalog extension: .mo after installation, .gmo in source tree
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50 | dnl 3) No internationalization, always use English msgid.
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51 | dnl Catalog format: none
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52 | dnl Catalog extension: none
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53 | dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
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54 | dnl The use of .gmo is historical (it was needed to avoid overwriting the
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55 | dnl GNU format catalogs when building on a platform with an X/Open gettext),
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56 | dnl but we keep it in order not to force irrelevant filename changes on the
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57 | dnl maintainers.
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58 | dnl
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59 | AC_DEFUN([AM_GNU_GETTEXT],
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60 | [
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61 | dnl Argument checking.
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62 | ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
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63 | [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
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64 | ])])])])])
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65 | ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
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66 | [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
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67 | ])])])])
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68 | define([gt_included_intl], ifelse([$1], [external], [no], [yes]))
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69 | define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
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70 |
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71 | AC_REQUIRE([AM_PO_SUBDIRS])dnl
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72 | ifelse(gt_included_intl, yes, [
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73 | AC_REQUIRE([AM_INTL_SUBDIR])dnl
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74 | ])
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75 |
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76 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
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77 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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78 | AC_REQUIRE([AC_LIB_RPATH])
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79 |
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80 | dnl Sometimes libintl requires libiconv, so first search for libiconv.
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81 | dnl Ideally we would do this search only after the
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82 | dnl if test "$USE_NLS" = "yes"; then
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83 | dnl if test "$gt_cv_func_gnugettext_libc" != "yes"; then
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84 | dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
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85 | dnl the configure script would need to contain the same shell code
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86 | dnl again, outside any 'if'. There are two solutions:
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87 | dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
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88 | dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
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89 | dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
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90 | dnl documented, we avoid it.
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91 | ifelse(gt_included_intl, yes, , [
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92 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
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93 | ])
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94 |
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95 | dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
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96 | gt_INTL_MACOSX
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97 |
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98 | dnl Set USE_NLS.
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99 | AC_REQUIRE([AM_NLS])
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100 |
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101 | ifelse(gt_included_intl, yes, [
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102 | BUILD_INCLUDED_LIBINTL=no
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103 | USE_INCLUDED_LIBINTL=no
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104 | ])
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105 | LIBINTL=
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106 | LTLIBINTL=
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107 | POSUB=
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108 |
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109 | dnl If we use NLS figure out what method
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110 | if test "$USE_NLS" = "yes"; then
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111 | gt_use_preinstalled_gnugettext=no
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112 | ifelse(gt_included_intl, yes, [
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113 | AC_MSG_CHECKING([whether included gettext is requested])
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114 | AC_ARG_WITH(included-gettext,
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115 | [ --with-included-gettext use the GNU gettext library included here],
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116 | nls_cv_force_use_gnu_gettext=$withval,
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117 | nls_cv_force_use_gnu_gettext=no)
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118 | AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
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119 |
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120 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
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121 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
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122 | ])
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123 | dnl User does not insist on using GNU NLS library. Figure out what
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124 | dnl to use. If GNU gettext is available we use this. Else we have
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125 | dnl to fall back to GNU NLS library.
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126 |
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127 | dnl Add a version number to the cache macros.
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128 | define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
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129 | define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
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130 | define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
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131 |
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132 | AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
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133 | [AC_TRY_LINK([#include <libintl.h>
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134 | ]ifelse([$2], [need-formatstring-macros],
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135 | [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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136 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
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137 | #endif
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138 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
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139 | ]], [])[extern int _nl_msg_cat_cntr;
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140 | extern int *_nl_domain_bindings;],
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141 | [bindtextdomain ("", "");
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142 | return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
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143 | gt_cv_func_gnugettext_libc=yes,
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144 | gt_cv_func_gnugettext_libc=no)])
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145 |
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146 | if test "$gt_cv_func_gnugettext_libc" != "yes"; then
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147 | dnl Sometimes libintl requires libiconv, so first search for libiconv.
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148 | ifelse(gt_included_intl, yes, , [
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149 | AM_ICONV_LINK
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150 | ])
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151 | dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
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152 | dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
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153 | dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
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154 | dnl even if libiconv doesn't exist.
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155 | AC_LIB_LINKFLAGS_BODY([intl])
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156 | AC_CACHE_CHECK([for GNU gettext in libintl],
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157 | gt_cv_func_gnugettext_libintl,
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158 | [gt_save_CPPFLAGS="$CPPFLAGS"
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159 | CPPFLAGS="$CPPFLAGS $INCINTL"
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160 | gt_save_LIBS="$LIBS"
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161 | LIBS="$LIBS $LIBINTL"
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162 | dnl Now see whether libintl exists and does not depend on libiconv.
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163 | AC_TRY_LINK([#include <libintl.h>
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164 | ]ifelse([$2], [need-formatstring-macros],
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165 | [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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166 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
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167 | #endif
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168 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
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169 | ]], [])[extern int _nl_msg_cat_cntr;
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170 | extern
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171 | #ifdef __cplusplus
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172 | "C"
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173 | #endif
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174 | const char *_nl_expand_alias (const char *);],
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175 | [bindtextdomain ("", "");
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176 | return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
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177 | gt_cv_func_gnugettext_libintl=yes,
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178 | gt_cv_func_gnugettext_libintl=no)
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179 | dnl Now see whether libintl exists and depends on libiconv.
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180 | if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
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181 | LIBS="$LIBS $LIBICONV"
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182 | AC_TRY_LINK([#include <libintl.h>
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183 | ]ifelse([$2], [need-formatstring-macros],
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184 | [[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
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185 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
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186 | #endif
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187 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
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188 | ]], [])[extern int _nl_msg_cat_cntr;
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189 | extern
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190 | #ifdef __cplusplus
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191 | "C"
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192 | #endif
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193 | const char *_nl_expand_alias (const char *);],
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194 | [bindtextdomain ("", "");
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195 | return * gettext ("")]ifelse([$2], [need-ngettext], [ + * ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias ("")],
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196 | [LIBINTL="$LIBINTL $LIBICONV"
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197 | LTLIBINTL="$LTLIBINTL $LTLIBICONV"
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198 | gt_cv_func_gnugettext_libintl=yes
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199 | ])
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200 | fi
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201 | CPPFLAGS="$gt_save_CPPFLAGS"
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202 | LIBS="$gt_save_LIBS"])
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203 | fi
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204 |
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205 | dnl If an already present or preinstalled GNU gettext() is found,
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206 | dnl use it. But if this macro is used in GNU gettext, and GNU
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207 | dnl gettext is already preinstalled in libintl, we update this
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208 | dnl libintl. (Cf. the install rule in intl/Makefile.in.)
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209 | if test "$gt_cv_func_gnugettext_libc" = "yes" \
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210 | || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
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211 | && test "$PACKAGE" != gettext-runtime \
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212 | && test "$PACKAGE" != gettext-tools; }; then
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213 | gt_use_preinstalled_gnugettext=yes
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214 | else
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215 | dnl Reset the values set by searching for libintl.
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216 | LIBINTL=
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217 | LTLIBINTL=
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218 | INCINTL=
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219 | fi
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220 |
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221 | ifelse(gt_included_intl, yes, [
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222 | if test "$gt_use_preinstalled_gnugettext" != "yes"; then
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223 | dnl GNU gettext is not found in the C library.
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224 | dnl Fall back on included GNU gettext library.
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225 | nls_cv_use_gnu_gettext=yes
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226 | fi
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227 | fi
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228 |
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229 | if test "$nls_cv_use_gnu_gettext" = "yes"; then
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230 | dnl Mark actions used to generate GNU NLS library.
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231 | BUILD_INCLUDED_LIBINTL=yes
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232 | USE_INCLUDED_LIBINTL=yes
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233 | LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
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234 | LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
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235 | LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
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236 | fi
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237 |
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238 | CATOBJEXT=
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239 | if test "$gt_use_preinstalled_gnugettext" = "yes" \
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240 | || test "$nls_cv_use_gnu_gettext" = "yes"; then
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241 | dnl Mark actions to use GNU gettext tools.
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242 | CATOBJEXT=.gmo
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243 | fi
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244 | ])
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245 |
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246 | if test -n "$INTL_MACOSX_LIBS"; then
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247 | if test "$gt_use_preinstalled_gnugettext" = "yes" \
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248 | || test "$nls_cv_use_gnu_gettext" = "yes"; then
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249 | dnl Some extra flags are needed during linking.
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250 | LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
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251 | LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
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252 | fi
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253 | fi
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254 |
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255 | if test "$gt_use_preinstalled_gnugettext" = "yes" \
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256 | || test "$nls_cv_use_gnu_gettext" = "yes"; then
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257 | AC_DEFINE(ENABLE_NLS, 1,
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258 | [Define to 1 if translation of program messages to the user's native language
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259 | is requested.])
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260 | else
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261 | USE_NLS=no
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262 | fi
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263 | fi
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264 |
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265 | AC_MSG_CHECKING([whether to use NLS])
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266 | AC_MSG_RESULT([$USE_NLS])
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267 | if test "$USE_NLS" = "yes"; then
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268 | AC_MSG_CHECKING([where the gettext function comes from])
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269 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then
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270 | if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
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271 | gt_source="external libintl"
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272 | else
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273 | gt_source="libc"
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274 | fi
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275 | else
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276 | gt_source="included intl directory"
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277 | fi
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278 | AC_MSG_RESULT([$gt_source])
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279 | fi
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280 |
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281 | if test "$USE_NLS" = "yes"; then
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282 |
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283 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then
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284 | if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
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285 | AC_MSG_CHECKING([how to link with libintl])
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286 | AC_MSG_RESULT([$LIBINTL])
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287 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
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288 | fi
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289 |
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290 | dnl For backward compatibility. Some packages may be using this.
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291 | AC_DEFINE(HAVE_GETTEXT, 1,
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292 | [Define if the GNU gettext() function is already present or preinstalled.])
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293 | AC_DEFINE(HAVE_DCGETTEXT, 1,
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294 | [Define if the GNU dcgettext() function is already present or preinstalled.])
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295 | fi
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296 |
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297 | dnl We need to process the po/ directory.
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298 | POSUB=po
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299 | fi
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300 |
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301 | ifelse(gt_included_intl, yes, [
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302 | dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
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303 | dnl to 'yes' because some of the testsuite requires it.
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304 | if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
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305 | BUILD_INCLUDED_LIBINTL=yes
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306 | fi
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307 |
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308 | dnl Make all variables we use known to autoconf.
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309 | AC_SUBST(BUILD_INCLUDED_LIBINTL)
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310 | AC_SUBST(USE_INCLUDED_LIBINTL)
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311 | AC_SUBST(CATOBJEXT)
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312 |
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313 | dnl For backward compatibility. Some configure.ins may be using this.
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314 | nls_cv_header_intl=
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315 | nls_cv_header_libgt=
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316 |
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317 | dnl For backward compatibility. Some Makefiles may be using this.
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318 | DATADIRNAME=share
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319 | AC_SUBST(DATADIRNAME)
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320 |
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321 | dnl For backward compatibility. Some Makefiles may be using this.
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322 | INSTOBJEXT=.mo
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323 | AC_SUBST(INSTOBJEXT)
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324 |
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325 | dnl For backward compatibility. Some Makefiles may be using this.
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326 | GENCAT=gencat
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327 | AC_SUBST(GENCAT)
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328 |
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329 | dnl For backward compatibility. Some Makefiles may be using this.
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330 | INTLOBJS=
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331 | if test "$USE_INCLUDED_LIBINTL" = yes; then
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332 | INTLOBJS="\$(GETTOBJS)"
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333 | fi
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334 | AC_SUBST(INTLOBJS)
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335 |
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336 | dnl Enable libtool support if the surrounding package wishes it.
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337 | INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
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338 | AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
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339 | ])
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340 |
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341 | dnl For backward compatibility. Some Makefiles may be using this.
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342 | INTLLIBS="$LIBINTL"
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343 | AC_SUBST(INTLLIBS)
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344 |
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345 | dnl Make all documented variables known to autoconf.
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346 | AC_SUBST(LIBINTL)
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347 | AC_SUBST(LTLIBINTL)
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348 | AC_SUBST(POSUB)
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349 | ])
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350 |
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351 |
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352 | dnl Checks for all prerequisites of the intl subdirectory,
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353 | dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
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354 | dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
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355 | AC_DEFUN([AM_INTL_SUBDIR], [])
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356 | ])
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357 |
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358 |
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359 | dnl Checks for the core files of the intl subdirectory:
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360 | dnl dcigettext.c
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361 | dnl eval-plural.h
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362 | dnl explodename.c
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363 | dnl finddomain.c
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364 | dnl gettextP.h
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365 | dnl gmo.h
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366 | dnl hash-string.h hash-string.c
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367 | dnl l10nflist.c
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368 | dnl libgnuintl.h.in (except the *printf stuff)
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369 | dnl loadinfo.h
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370 | dnl loadmsgcat.c
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371 | dnl localealias.c
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372 | dnl log.c
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373 | dnl plural-exp.h plural-exp.c
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374 | dnl plural.y
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375 | dnl Used by libglocale.
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376 | AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
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377 |
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378 |
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379 | dnl Checks for special options needed on MacOS X.
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380 | dnl Defines INTL_MACOSX_LIBS.
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381 | AC_DEFUN([gt_INTL_MACOSX],
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382 | [
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383 | dnl Check for API introduced in MacOS X 10.2.
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384 | AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
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385 | gt_cv_func_CFPreferencesCopyAppValue,
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386 | [gt_save_LIBS="$LIBS"
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387 | LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
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388 | AC_TRY_LINK([#include <CoreFoundation/CFPreferences.h>],
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389 | [CFPreferencesCopyAppValue(NULL, NULL)],
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390 | [gt_cv_func_CFPreferencesCopyAppValue=yes],
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391 | [gt_cv_func_CFPreferencesCopyAppValue=no])
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392 | LIBS="$gt_save_LIBS"])
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393 | if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
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394 | AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], 1,
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395 | [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
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396 | fi
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397 | dnl Check for API introduced in MacOS X 10.3.
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398 | AC_CACHE_CHECK([for CFLocaleCopyCurrent], gt_cv_func_CFLocaleCopyCurrent,
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399 | [gt_save_LIBS="$LIBS"
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400 | LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
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401 | AC_TRY_LINK([#include <CoreFoundation/CFLocale.h>], [CFLocaleCopyCurrent();],
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402 | [gt_cv_func_CFLocaleCopyCurrent=yes],
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403 | [gt_cv_func_CFLocaleCopyCurrent=no])
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404 | LIBS="$gt_save_LIBS"])
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405 | if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
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406 | AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], 1,
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407 | [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
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408 | fi
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409 | INTL_MACOSX_LIBS=
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410 | if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
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411 | INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
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412 | fi
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413 | AC_SUBST([INTL_MACOSX_LIBS])
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414 | ])
|
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415 |
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416 |
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417 | dnl gt_CHECK_DECL(FUNC, INCLUDES)
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418 | dnl Check whether a function is declared.
|
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419 | AC_DEFUN([gt_CHECK_DECL],
|
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420 | [
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421 | AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,
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422 | [AC_TRY_COMPILE([$2], [
|
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423 | #ifndef $1
|
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424 | char *p = (char *) $1;
|
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425 | #endif
|
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426 | ], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])
|
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427 | if test $ac_cv_have_decl_$1 = yes; then
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428 | gt_value=1
|
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429 | else
|
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430 | gt_value=0
|
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431 | fi
|
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432 | AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],
|
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433 | [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])
|
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434 | ])
|
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435 |
|
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436 |
|
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437 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
|
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438 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
|
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