Commit
32f15d05c fixed this in configure, but missed the similar check
in the MSVC scripts.
Michael Paquier, per report from Victor Wagner
$flexver = (split(/\s+/, $flexver))[1];
$flexver =~ s/[^0-9.]//g;
my @verparts = split(/\./, $flexver);
-unless ($verparts[0] == 2 && $verparts[1] == 5 && $verparts[2] >= 31)
+unless ($verparts[0] == 2 &&
+ ($verparts[1] > 5 || ($verparts[1] == 5 && $verparts[2] >= 31)))
{
print "WARNING! Flex install not found, or unsupported Flex version.\n";
print "echo Attempting to build without.\n";