Add a comment on staic compilation

Author: gnull

farm-hs.cabal

@@ -53,8 +53,9 @@ executable farm-hs
   ghc-options:
     -O2
     -threaded
-  -- This line will compile static executable:
-  --  -static -optc-static -optl-static
+  -- This line will compile a static executable:
+  --    -static -optc-static -optl-static -fPIC
+  --  ld-options: -static
 
   -- Modules included in this executable, other than Main.
   other-modules: Options Concurrency Logging