Improve windows build instructions

README.md

@@ -55,11 +55,17 @@ N64 pad buttons X and Y (or `X_BUTTON`, `Y_BUTTON` in the code) refer to the res
 
 ### Windows
 
-1. Install MSYS2.
+1. Install [MSYS2[(https://www.msys2.org).
 2. Open the MINGW32 prompt.
 3. Install dependencies: `pacman -S mingw-w64-i686-toolchain mingw-w64-i686-SDL2 mingw-w64-i686-zlib make git`
-4. Run `make -f Makefile.port` in the `perfect_dark` directory.
-5. The resulting executable will be at `build/ntsc-final-port/pd.exe`.
+4. clone the project: `git clone https://github.com/fgsfdsfgs/perfect_dark`
+5. cd into the project: `cd perfect_dark`
+6. Set HOST_PLATFORM to i686-windows in Makefile.port: `sed -i "s/^HOST_PLATFORM ?=.*$/HOST_PLATFORM ?= i686-windows/" Makefile.port`
+7. Set a few environment variables (you can also add these to your `~/.bashrc` if you want them to stick around)
+   - `export PKG_CONFIG_PATH=/mingw32/lib/pkgconfig:$PKG_CONFIG_PATH`
+   - `export PATH=/mingw32/bin/:$PATH`
+7. Run `make -f Makefile.port` in the `perfect_dark` directory.
+8. The resulting executable will be at `build/ntsc-final-port/pd.exe`.
 
 ### Linux