1# bison-i18n.m4 serial 2 2dnl Copyright (C) 2005-2006 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Bruno Haible. 8 9dnl Support for internationalization of bison-generated parsers. 10 11dnl BISON_I18N 12dnl should be used in configure.ac, after AM_GNU_GETTEXT. If USE_NLS is yes, it 13dnl sets BISON_LOCALEDIR to indicate where to find the bison-runtime.mo files 14dnl and defines YYENABLE_NLS if there are bison-runtime.mo files at all. 15AC_DEFUN([BISON_I18N], 16[ 17 if test -z "$USE_NLS"; then 18 echo "The BISON-I18N macro is used without being preceded by AM-GNU-GETTEXT." 1>&2 19 exit 1 20 fi 21 BISON_LOCALEDIR= 22 BISON_USE_NLS=no 23 if test "$USE_NLS" = yes; then 24 dnl Determine bison's localedir. 25 dnl AC_PROG_YACC sets the YACC variable; other macros set the BISON variable. 26 dnl But even is YACC is called "yacc", it may be a script that invokes bison 27 dnl and accepts the --print-localedir option. 28 dnl YACC's default value is empty; BISON's default value is :. 29 if (${YACC-${BISON-:}} --print-localedir) >/dev/null 2>&1; then 30 BISON_LOCALEDIR=`${YACC-${BISON-:}} --print-localedir` 31 fi 32 AC_SUBST([BISON_LOCALEDIR]) 33 if test -n "$BISON_LOCALEDIR"; then 34 dnl There is no need to enable internationalization if the user doesn't 35 dnl want message catalogs. So look at the language/locale names for 36 dnl which the user wants message catalogs. This is $LINGUAS. If unset 37 dnl or empty, he wants all of them. 38 USER_LINGUAS="${LINGUAS-%UNSET%}" 39 if test -n "$USER_LINGUAS"; then 40 BISON_USE_NLS=yes 41 fi 42 fi 43 fi 44 if test $BISON_USE_NLS = yes; then 45 AC_DEFINE([YYENABLE_NLS], 1, 46 [Define to 1 to internationalize bison runtime messages.]) 47 fi 48]) 49