intl: Make autoconf macro more robust.

Reported by Bernhard Voelker <mail@bernhard-voelker.de>.

* gettext-runtime/m4/intl.m4 (gt_INTL_SUBDIR_CORE): Don't make assumptions about
the version numbers of future Bison versions.

diff --git a/gettext-runtime/m4/intl.m4 b/gettext-runtime/m4/intl.m4
index 1107661923b5a6a8c0f3a731b0ca02b3cdaf984d..f31f274f0d72144c7508e64c67980c9d2faeaa4a 100644 (file)
--- a/gettext-runtime/m4/intl.m4
+++ b/gettext-runtime/m4/intl.m4
@@ -1,4 +1,4 @@
-# intl.m4 serial 37 (gettext-0.20)
+# intl.m4 serial 38 (gettext-0.20.2)
 dnl Copyright (C) 1995-2014, 2016-2019 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -269,10 +269,10 @@ changequote(<<,>>)dnl
     ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
     case $ac_prog_version in
       '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-      2.[7-9]* | [3-9].*)
+      1.* | 2.[0-6] | 2.[0-6].*)
 changequote([,])dnl
-         ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
-      *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+         ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+      *) ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     esac
     AC_MSG_RESULT([$ac_prog_version])
   fi