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# bison-i18n.m4 serial 1 (bison-2.1)
dnl Copyright (C) 2005 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 "$USE_NLS"; then
echo "The BISON-I18N macro is used without being preceded by AM-GNU-GETTEXT." 1>&2
exit 1
fi
BISON_LOCALEDIR=
if test "$USE_NLS" = yes; then
dnl AC_PROG_YACC sets the YACC variable; other macros set the BISON variable.
if test -n "$YACC"; then
case "$YACC" in
*bison*)
if ($YACC --print-localedir) >/dev/null 2>&1; then
BISON_LOCALEDIR=`$YACC --print-localedir`
fi
;;
esac
else
if test -n "$BISON"; then
if test "$BISON" != ":"; then
if ($BISON --print-localedir) >/dev/null 2>&1; then
BISON_LOCALEDIR=`$BISON --print-localedir`
fi
fi
fi
fi
AC_SUBST([BISON_LOCALEDIR])
if test -n "$BISON_LOCALEDIR"; then
USER_LINGUAS="${LINGUAS-%UNSET%}"
if test -n "$USER_LINGUAS"; then
BISON_USE_NLS=yes
else
BISON_USE_NLS=no
fi
else
BISON_USE_NLS=no
fi
else
BISON_USE_NLS=no
fi
if test $BISON_USE_NLS = yes; then
AC_DEFINE([YYENABLE_NLS], 1,
[Define to 1 to internationalize bison runtime messages.])
fi
])
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