Reduce haskell binary

To reduce the binary compiled by haskell compiler one can use some methods.

First, use dynamic linking:

ghc -dynamic -o hello hello.hs

Second, remove all trash (e.g., with strip):

strip -p --strip-unneeded --remove-section=.comment -o hello-small hello

Third, compress executable binary (e.g., with UPX) (see man upx for more options)

upx --brute -o hello-super-small hello-small