+## $Id: Makefile.PL,v 1.14 2007-04-17 07:56:29 adam Exp $
+
+my $yazconf = "../yaz/yaz-config";
+my $yazver = `$yazconf --version`;
+my $yazinc = `$yazconf --cflags threads`;
+my $yazlibs = `$yazconf --libs threads`;
+if (!$yazver || (!$yazinc && !$yazlibs)) {
+ die qq[
+ERROR: Unable to call script: yaz-config
+If you're using a YAZ installation from the Debian package "yaz", you
+will also need to install "libyaz-dev" in order to build the
+SimpleServer module.
+];
+}
+
+chomp($yazver);
+my ($major, $minor, $trivial) = split(/\./, $yazver);
+# YAZ 2.1.14 is the first to propagate SRW/U addinfo correctly
+my ($needMaj, $needMin, $needTriv) = (2, 1, 99);
+#print "major=$major, minor=$minor, trivial=$trivial\n";
+die "You have YAZ version $major.$minor.$trivial; " .
+ "you need $needMaj.$needMin.$needTriv or better."
+ if ($major < $needMaj ||
+ $major == $needMaj && $minor < $needMin ||
+ $major == $needMaj && $minor == $needMin && $trivial < $needTriv);
+
+# For Windows use
+# $yazinc = '-Ic:\yaz\include'
+# $yazlibs = 'c:\yaz\lib\yaz.lib'