1 | # gettext.m4 serial 20 (gettext-0.12) |
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2 | dnl Copyright (C) 1995-2003 Free Software Foundation, Inc. |
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3 | dnl This file is free software, distributed under the terms of the GNU |
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4 | dnl General Public License. As a special exception to the GNU General |
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5 | dnl Public License, this file may be distributed as part of a program |
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6 | dnl that contains a configuration script generated by Autoconf, under |
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7 | dnl the same distribution terms as the rest of that program. |
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8 | dnl |
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9 | dnl This file can can be used in projects which are not available under |
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10 | dnl the GNU General Public License or the GNU Library General Public |
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11 | dnl License but which still want to provide support for the GNU gettext |
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12 | dnl functionality. |
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13 | dnl Please note that the actual code of the GNU gettext library is covered |
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14 | dnl by the GNU Library General Public License, and the rest of the GNU |
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15 | dnl gettext package package is covered by the GNU General Public License. |
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16 | dnl They are *not* in the public domain. |
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17 | |
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18 | dnl Authors: |
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19 | dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000. |
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20 | dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003. |
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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.ac 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 Set USE_NLS. |
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96 | AM_NLS |
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97 | |
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98 | ifelse(gt_included_intl, yes, [ |
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99 | BUILD_INCLUDED_LIBINTL=no |
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100 | USE_INCLUDED_LIBINTL=no |
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101 | ]) |
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102 | LIBINTL= |
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103 | LTLIBINTL= |
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104 | POSUB= |
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105 | |
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106 | dnl If we use NLS figure out what method |
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107 | if test "$USE_NLS" = "yes"; then |
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108 | gt_use_preinstalled_gnugettext=no |
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109 | ifelse(gt_included_intl, yes, [ |
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110 | AC_MSG_CHECKING([whether included gettext is requested]) |
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111 | AC_ARG_WITH(included-gettext, |
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112 | [ --with-included-gettext use the GNU gettext library included here], |
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113 | nls_cv_force_use_gnu_gettext=$withval, |
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114 | nls_cv_force_use_gnu_gettext=no) |
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115 | AC_MSG_RESULT($nls_cv_force_use_gnu_gettext) |
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116 | |
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117 | nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext" |
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118 | if test "$nls_cv_force_use_gnu_gettext" != "yes"; then |
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119 | ]) |
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120 | dnl User does not insist on using GNU NLS library. Figure out what |
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121 | dnl to use. If GNU gettext is available we use this. Else we have |
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122 | dnl to fall back to GNU NLS library. |
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123 | |
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124 | dnl Add a version number to the cache macros. |
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125 | define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1))) |
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126 | define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc]) |
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127 | define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl]) |
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128 | |
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129 | AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc, |
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130 | [AC_TRY_LINK([#include <libintl.h> |
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131 | ]ifelse([$2], [need-formatstring-macros], |
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132 | [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
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133 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) |
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134 | #endif |
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135 | changequote(,)dnl |
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136 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; |
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137 | changequote([,])dnl |
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138 | ], [])[extern int _nl_msg_cat_cntr; |
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139 | extern int *_nl_domain_bindings;], |
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140 | [bindtextdomain ("", ""); |
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141 | return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings], |
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142 | gt_cv_func_gnugettext_libc=yes, |
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143 | gt_cv_func_gnugettext_libc=no)]) |
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144 | |
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145 | if test "$gt_cv_func_gnugettext_libc" != "yes"; then |
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146 | dnl Sometimes libintl requires libiconv, so first search for libiconv. |
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147 | ifelse(gt_included_intl, yes, , [ |
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148 | AM_ICONV_LINK |
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149 | ]) |
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150 | dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL |
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151 | dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv]) |
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152 | dnl because that would add "-liconv" to LIBINTL and LTLIBINTL |
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153 | dnl even if libiconv doesn't exist. |
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154 | AC_LIB_LINKFLAGS_BODY([intl]) |
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155 | AC_CACHE_CHECK([for GNU gettext in libintl], |
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156 | gt_cv_func_gnugettext_libintl, |
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157 | [gt_save_CPPFLAGS="$CPPFLAGS" |
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158 | CPPFLAGS="$CPPFLAGS $INCINTL" |
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159 | gt_save_LIBS="$LIBS" |
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160 | LIBS="$LIBS $LIBINTL" |
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161 | dnl Now see whether libintl exists and does not depend on libiconv. |
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162 | AC_TRY_LINK([#include <libintl.h> |
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163 | ]ifelse([$2], [need-formatstring-macros], |
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164 | [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
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165 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) |
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166 | #endif |
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167 | changequote(,)dnl |
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168 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; |
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169 | changequote([,])dnl |
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170 | ], [])[extern int _nl_msg_cat_cntr; |
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171 | extern |
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172 | #ifdef __cplusplus |
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173 | "C" |
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174 | #endif |
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175 | const char *_nl_expand_alias ();], |
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176 | [bindtextdomain ("", ""); |
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177 | return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)], |
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178 | gt_cv_func_gnugettext_libintl=yes, |
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179 | gt_cv_func_gnugettext_libintl=no) |
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180 | dnl Now see whether libintl exists and depends on libiconv. |
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181 | if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then |
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182 | LIBS="$LIBS $LIBICONV" |
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183 | AC_TRY_LINK([#include <libintl.h> |
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184 | ]ifelse([$2], [need-formatstring-macros], |
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185 | [#ifndef __GNU_GETTEXT_SUPPORTED_REVISION |
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186 | #define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1) |
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187 | #endif |
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188 | changequote(,)dnl |
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189 | typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1]; |
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190 | changequote([,])dnl |
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191 | ], [])[extern int _nl_msg_cat_cntr; |
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192 | extern |
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193 | #ifdef __cplusplus |
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194 | "C" |
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195 | #endif |
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196 | const char *_nl_expand_alias ();], |
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197 | [bindtextdomain ("", ""); |
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198 | return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)], |
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199 | [LIBINTL="$LIBINTL $LIBICONV" |
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200 | LTLIBINTL="$LTLIBINTL $LTLIBICONV" |
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201 | gt_cv_func_gnugettext_libintl=yes |
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202 | ]) |
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203 | fi |
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204 | CPPFLAGS="$gt_save_CPPFLAGS" |
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205 | LIBS="$gt_save_LIBS"]) |
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206 | fi |
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207 | |
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208 | dnl If an already present or preinstalled GNU gettext() is found, |
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209 | dnl use it. But if this macro is used in GNU gettext, and GNU |
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210 | dnl gettext is already preinstalled in libintl, we update this |
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211 | dnl libintl. (Cf. the install rule in intl/Makefile.in.) |
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212 | if test "$gt_cv_func_gnugettext_libc" = "yes" \ |
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213 | || { test "$gt_cv_func_gnugettext_libintl" = "yes" \ |
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214 | && test "$PACKAGE" != gettext-runtime \ |
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215 | && test "$PACKAGE" != gettext-tools; }; then |
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216 | gt_use_preinstalled_gnugettext=yes |
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217 | else |
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218 | dnl Reset the values set by searching for libintl. |
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219 | LIBINTL= |
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220 | LTLIBINTL= |
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221 | INCINTL= |
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222 | fi |
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223 | |
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224 | ifelse(gt_included_intl, yes, [ |
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225 | if test "$gt_use_preinstalled_gnugettext" != "yes"; then |
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226 | dnl GNU gettext is not found in the C library. |
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227 | dnl Fall back on included GNU gettext library. |
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228 | nls_cv_use_gnu_gettext=yes |
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229 | fi |
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230 | fi |
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231 | |
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232 | if test "$nls_cv_use_gnu_gettext" = "yes"; then |
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233 | dnl Mark actions used to generate GNU NLS library. |
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234 | BUILD_INCLUDED_LIBINTL=yes |
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235 | USE_INCLUDED_LIBINTL=yes |
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236 | LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV" |
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237 | LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV" |
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238 | LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` |
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239 | fi |
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240 | |
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241 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ |
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242 | || test "$nls_cv_use_gnu_gettext" = "yes"; then |
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243 | dnl Mark actions to use GNU gettext tools. |
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244 | CATOBJEXT=.gmo |
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245 | fi |
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246 | ]) |
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247 | |
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248 | if test "$gt_use_preinstalled_gnugettext" = "yes" \ |
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249 | || test "$nls_cv_use_gnu_gettext" = "yes"; then |
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250 | AC_DEFINE(ENABLE_NLS, 1, |
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251 | [Define to 1 if translation of program messages to the user's native language |
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252 | is requested.]) |
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253 | else |
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254 | USE_NLS=no |
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255 | fi |
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256 | fi |
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257 | |
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258 | AC_MSG_CHECKING([whether to use NLS]) |
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259 | AC_MSG_RESULT([$USE_NLS]) |
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260 | if test "$USE_NLS" = "yes"; then |
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261 | AC_MSG_CHECKING([where the gettext function comes from]) |
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262 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then |
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263 | if test "$gt_cv_func_gnugettext_libintl" = "yes"; then |
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264 | gt_source="external libintl" |
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265 | else |
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266 | gt_source="libc" |
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267 | fi |
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268 | else |
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269 | gt_source="included intl directory" |
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270 | fi |
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271 | AC_MSG_RESULT([$gt_source]) |
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272 | fi |
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273 | |
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274 | if test "$USE_NLS" = "yes"; then |
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275 | |
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276 | if test "$gt_use_preinstalled_gnugettext" = "yes"; then |
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277 | if test "$gt_cv_func_gnugettext_libintl" = "yes"; then |
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278 | AC_MSG_CHECKING([how to link with libintl]) |
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279 | AC_MSG_RESULT([$LIBINTL]) |
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280 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) |
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281 | fi |
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282 | |
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283 | dnl For backward compatibility. Some packages may be using this. |
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284 | AC_DEFINE(HAVE_GETTEXT, 1, |
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285 | [Define if the GNU gettext() function is already present or preinstalled.]) |
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286 | AC_DEFINE(HAVE_DCGETTEXT, 1, |
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287 | [Define if the GNU dcgettext() function is already present or preinstalled.]) |
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288 | fi |
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289 | |
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290 | dnl We need to process the po/ directory. |
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291 | POSUB=po |
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292 | fi |
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293 | |
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294 | ifelse(gt_included_intl, yes, [ |
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295 | dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL |
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296 | dnl to 'yes' because some of the testsuite requires it. |
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297 | if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then |
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298 | BUILD_INCLUDED_LIBINTL=yes |
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299 | fi |
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300 | |
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301 | dnl Make all variables we use known to autoconf. |
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302 | AC_SUBST(BUILD_INCLUDED_LIBINTL) |
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303 | AC_SUBST(USE_INCLUDED_LIBINTL) |
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304 | AC_SUBST(CATOBJEXT) |
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305 | |
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306 | dnl For backward compatibility. Some configure.acs may be using this. |
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307 | nls_cv_header_intl= |
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308 | nls_cv_header_libgt= |
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309 | |
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310 | dnl For backward compatibility. Some Makefiles may be using this. |
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311 | DATADIRNAME=share |
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312 | AC_SUBST(DATADIRNAME) |
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313 | |
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314 | dnl For backward compatibility. Some Makefiles may be using this. |
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315 | INSTOBJEXT=.mo |
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316 | AC_SUBST(INSTOBJEXT) |
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317 | |
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318 | dnl For backward compatibility. Some Makefiles may be using this. |
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319 | GENCAT=gencat |
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320 | AC_SUBST(GENCAT) |
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321 | |
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322 | dnl For backward compatibility. Some Makefiles may be using this. |
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323 | if test "$USE_INCLUDED_LIBINTL" = yes; then |
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324 | INTLOBJS="\$(GETTOBJS)" |
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325 | fi |
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326 | AC_SUBST(INTLOBJS) |
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327 | |
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328 | dnl Enable libtool support if the surrounding package wishes it. |
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329 | INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix |
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330 | AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX) |
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331 | ]) |
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332 | |
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333 | dnl For backward compatibility. Some Makefiles may be using this. |
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334 | INTLLIBS="$LIBINTL" |
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335 | AC_SUBST(INTLLIBS) |
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336 | |
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337 | dnl Make all documented variables known to autoconf. |
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338 | AC_SUBST(LIBINTL) |
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339 | AC_SUBST(LTLIBINTL) |
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340 | AC_SUBST(POSUB) |
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341 | ]) |
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342 | |
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343 | |
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344 | dnl Checks for all prerequisites of the intl subdirectory, |
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345 | dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS, |
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346 | dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL. |
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347 | AC_DEFUN([AM_INTL_SUBDIR], |
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348 | [ |
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349 | AC_REQUIRE([AC_PROG_INSTALL])dnl |
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350 | AC_REQUIRE([AM_MKINSTALLDIRS])dnl |
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351 | AC_REQUIRE([AC_PROG_CC])dnl |
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352 | AC_REQUIRE([AC_CANONICAL_HOST])dnl |
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353 | AC_REQUIRE([AC_PROG_RANLIB])dnl |
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354 | AC_REQUIRE([AC_ISC_POSIX])dnl |
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355 | AC_REQUIRE([AC_HEADER_STDC])dnl |
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356 | AC_REQUIRE([AC_C_CONST])dnl |
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357 | AC_REQUIRE([AC_C_INLINE])dnl |
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358 | AC_REQUIRE([AC_TYPE_OFF_T])dnl |
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359 | AC_REQUIRE([AC_TYPE_SIZE_T])dnl |
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360 | AC_REQUIRE([AC_FUNC_ALLOCA])dnl |
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361 | AC_REQUIRE([AC_FUNC_MMAP])dnl |
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362 | AC_REQUIRE([jm_GLIBC21])dnl |
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363 | AC_REQUIRE([gt_INTDIV0])dnl |
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364 | AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])dnl |
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365 | AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl |
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366 | AC_REQUIRE([gt_INTTYPES_PRI])dnl |
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367 | |
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368 | AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \ |
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369 | stdlib.h string.h unistd.h sys/param.h]) |
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370 | AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \ |
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371 | geteuid getgid getuid mempcpy munmap putenv setenv setlocale stpcpy \ |
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372 | strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next \ |
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373 | __fsetlocking]) |
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374 | |
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375 | AM_ICONV |
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376 | AM_LANGINFO_CODESET |
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377 | if test $ac_cv_header_locale_h = yes; then |
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378 | AM_LC_MESSAGES |
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379 | fi |
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380 | |
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381 | dnl intl/plural.c is generated from intl/plural.y. It requires bison, |
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382 | dnl because plural.y uses bison specific features. It requires at least |
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383 | dnl bison-1.26 because earlier versions generate a plural.c that doesn't |
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384 | dnl compile. |
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385 | dnl bison is only needed for the maintainer (who touches plural.y). But in |
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386 | dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put |
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387 | dnl the rule in general Makefile. Now, some people carelessly touch the |
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388 | dnl files or have a broken "make" program, hence the plural.c rule will |
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389 | dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not |
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390 | dnl present or too old. |
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391 | AC_CHECK_PROGS([INTLBISON], [bison]) |
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392 | if test -z "$INTLBISON"; then |
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393 | ac_verc_fail=yes |
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394 | else |
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395 | dnl Found it, now check the version. |
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396 | AC_MSG_CHECKING([version of bison]) |
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397 | changequote(<<,>>)dnl |
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398 | ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'` |
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399 | case $ac_prog_version in |
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400 | '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; |
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401 | 1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*) |
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402 | changequote([,])dnl |
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403 | ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;; |
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404 | *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;; |
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405 | esac |
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406 | AC_MSG_RESULT([$ac_prog_version]) |
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407 | fi |
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408 | if test $ac_verc_fail = yes; then |
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409 | INTLBISON=: |
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410 | fi |
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411 | ]) |
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412 | |
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413 | |
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414 | dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) |
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415 | AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) |
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