* Add cthreads

utils/fpcmkcfg/fpmake.pp

@@ -2,7 +2,11 @@
 {$mode objfpc}{$H+}
 program fpmake;
 
-uses fpmkunit;
+uses 
+  {$ifdef unix}
+  cthreads,
+  {$endif}
+  fpmkunit;
 {$endif ALLPACKAGES}
 
 procedure add_fpcmkcfg(const ADirectory: string);