-my $yazver = `yaz-config --version`;
-my $yazinc = `yaz-config --cflags threads`;
-my $yazlibs = `yaz-config --libs threads`;
+my $yazconf = "yaz-config";
+my $yazver = `$yazconf --version`;
+my $yazinc = `$yazconf --cflags threads`;
+my $yazlibs = `$yazconf --libs threads`;