# the test below to allow that version too. DAPM Feb 04.
my $version = `$bison -V`;
-unless ($version =~ /\b(1\.875|2\.0)\b/) { die <<EOF; }
+unless ($version =~ /\b(1\.875[a-z]?|2\.0)\b/) { die <<EOF; }
You have the wrong version of bison in your path; currently 1.875
or 2.0 is required. Try installing