Check for proper Makefile when compiling on Windows, closes #4841
Check for proper Makefile when compiling on Windows, closes #4841

elixir-lang/elixir,kelvinst/elixir,beedub/elixir,kimshrier/elixir,gfvcastro/elixir,kelvinst/elixir,beedub/elixir,pedrosnk/elixir,lexmag/elixir,joshprice/elixir,pedrosnk/elixir,gfvcastro/elixir,ggcampinho/elixir,antipax/elixir,antipax/elixir,kimshrier/elixir,michalmuskala/elixir,ggcampinho/elixir,lexmag/elixir