get-ghc.ps1 is a Powershell script that automates the setup of a GHC development environment on Windows using the MSYS2 procedure. It requires PowerShell 3.0.
get-ghc-win7.ps1 is a version that works on Windows 7 without installing a new PowerShell.
The script is configured to set up the environment for building a 64-bit GHC by default, change the $msys variable to 32 for a 32-bit environment.
- Create a new directory.
- Run the get-ghc script in that directory
- Sit back and wait while everything is downloaded and unpacked
To start hacking, start the msys/mingw64_shell.bat for a 64-bit environment, or msys/mingw32_shell.bat for a 32-bit. The bootstrap compiler is in the msys/ghc-7.8.3 directory, and the GHC git is in msys/home/<username>/ghc. The GHC git has been cloned, all the various sub-gits have been synced and the boot script has been run. What remains is to run the configure script and to build GHC. That is described at Building GHC.