diff hints/linux.pl hints/linux.pl
--- hints/linux.pl
+++ hints/linux.pl
@@ -1 +1,12 @@
 symlink "os/Linux.c", "OS.c" || die "Could not link os/Linux.c to os/OS.c\n";
+
+
+  # We might have a non-threading perl, which doesn't add this
+  # necessary link option.
+use Config;
+my $thread_lib = "-lpthread";
+
+if( $Config{libs} !~ /$thread_lib/ ) {
+  $self->{LIBS} ||= [];
+  push @{ $self->{LIBS} }, $thread_lib;
+}