[Haskell-beginners] ld: warning: directory not found for option '-L/private/tmp/ghc20150401-90656-rxy9sj/ghc-7.10.1/gmp-static'

Hi, I see the following error. Does anybody know what is wrong? Thanks. $ cat hello.hs main = putStrLn "Hello, World!" $ ghc -o hello hello.hs [1 of 1] Compiling Main ( hello.hs, hello.o ) Linking hello ... ld: warning: directory not found for option '-L/private/tmp/ghc20150401-90656-rxy9sj/ghc-7.10.1/gmp-static' -- Regards, Peng