# bison-i18n.m4 serial 2 dnl Copyright (C) 2005-2006, 2009-2015 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Support for internationalization of bison-generated parsers. dnl BISON_I18N dnl should be used in configure.ac, after AM_GNU_GETTEXT. If USE_NLS is yes, it dnl sets BISON_LOCALEDIR to indicate where to find the bison-runtime.mo files dnl and defines YYENABLE_NLS if there are bison-runtime.mo files at all. AC_DEFUN([BISON_I18N], [ if test -z "$USE_NLS"; then echo "The BISON-I18N macro is used without being preceded by AM-GNU-GETTEXT." 1>&2 exit 1 fi BISON_LOCALEDIR= BISON_USE_NLS=no if test "$USE_NLS" = yes; then dnl Determine bison's localedir. dnl AC_PROG_YACC sets the YACC variable; other macros set the BISON variable. dnl But even is YACC is called "yacc", it may be a script that invokes bison dnl and accepts the --print-localedir option. dnl YACC's default value is empty; BISON's default value is :. if (${YACC-${BISON-:}} --print-localedir) >/dev/null 2>&1; then BISON_LOCALEDIR=`${YACC-${BISON-:}} --print-localedir` fi AC_SUBST([BISON_LOCALEDIR]) if test -n "$BISON_LOCALEDIR"; then dnl There is no need to enable internationalization if the user doesn't dnl want message catalogs. So look at the language/locale names for dnl which the user wants message catalogs. This is $LINGUAS. If unset dnl or empty, he wants all of them. USER_LINGUAS="${LINGUAS-%UNSET%}" if test -n "$USER_LINGUAS"; then BISON_USE_NLS=yes fi fi fi if test $BISON_USE_NLS = yes; then AC_DEFINE([YYENABLE_NLS], 1, [Define to 1 to internationalize bison runtime messages.]) fi ])