* From repository:

$ git clone https://bitbucket.org/alone/mutator
$ cd mutator
$ make

* From tarball:

$ wget https://bitbucket.org/alone/mutator/downloads/mutator_release-vX.X.X.tar.gz
$ tar -xvzf mutator_release-vX.X.X.tar.gz
$ cd mutator
$ make

* Cross Compile
To Cross Compile you need install mingw-w64 and any dependencies

$ make CC=i686-w64-mingw32-gcc

or

$ make CC=x86_64-w64-mingw32-gcc
