1 # bison-i18n.m4 serial 2 2 3 dnl Copyright (C) 2005-2006, 2009-2012 Free Software Foundation, Inc. 4 5 dnl This file is free software; the Free Software Foundation 6 dnl gives unlimited permission to copy and/or distribute it, 7 dnl with or without modifications, as long as this notice is preserved. 8 9 dnl From Bruno Haible. 10 11 dnl Support for internationalization of bison-generated parsers. 12 13 dnl BISON_I18N 14 dnl should be used in configure.ac, after AM_GNU_GETTEXT. If USE_NLS is yes, it 15 dnl sets BISON_LOCALEDIR to indicate where to find the bison-runtime.mo files 16 dnl and defines YYENABLE_NLS if there are bison-runtime.mo files at all. 17 AC_DEFUN([BISON_I18N], 18 [ 19 if test -z "$USE_NLS"; then 20 echo "The BISON-I18N macro is used without being preceded by AM-GNU-GETTEXT." 1>&2 21 exit 1 22 fi 23 BISON_LOCALEDIR= 24 BISON_USE_NLS=no 25 if test "$USE_NLS" = yes; then 26 dnl Determine bison's localedir. 27 dnl AC_PROG_YACC sets the YACC variable; other macros set the BISON variable. 28 dnl But even is YACC is called "yacc", it may be a script that invokes bison 29 dnl and accepts the --print-localedir option. 30 dnl YACC's default value is empty; BISON's default value is :. 31 if (${YACC-${BISON-:}} --print-localedir) >/dev/null 2>&1; then 32 BISON_LOCALEDIR=`${YACC-${BISON-:}} --print-localedir` 33 fi 34 AC_SUBST([BISON_LOCALEDIR]) 35 if test -n "$BISON_LOCALEDIR"; then 36 dnl There is no need to enable internationalization if the user doesn't 37 dnl want message catalogs. So look at the language/locale names for 38 dnl which the user wants message catalogs. This is $LINGUAS. If unset 39 dnl or empty, he wants all of them. 40 USER_LINGUAS="${LINGUAS-%UNSET%}" 41 if test -n "$USER_LINGUAS"; then 42 BISON_USE_NLS=yes 43 fi 44 fi 45 fi 46 if test $BISON_USE_NLS = yes; then 47 AC_DEFINE([YYENABLE_NLS], 1, 48 [Define to 1 to internationalize bison runtime messages.]) 49 fi 50 ]) 51
