You will find that many of these questions are things we’ve had to address in the HaLVM (http://github.com/GaloisInc/HaLVM). You may want to look in that code base for information on what we considered minimal and how we got around some of the build system and other issues a minimal build requires.

On Jul 2, 2015, at 1:20 PM, Jakub Zalewski <jakzale@gmail.com> wrote:

Dear all,
I am working on porting GHC to [native client](https://developer.chrome.com/native-client), which has some degree of POSIX-compliance.

I was thinking about building just the minimal/most essential parts of GHC that is enough to compile simple Haskell programs.

I wanted to ask which parts of GHC are the most essential and sufficient enough to compile a simple Haskell program, for instance to compile `main = putStrLn "Hello, world!"`?

I also wanted to ask how to force a GHC build without a particular package that comes by default, for instance how to build GHC without the `unix` package?

Best wishes,
Jakub
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