windows building support

README.md

@@ -13,6 +13,33 @@ Install with:
 meson install -C builddir
 ```
 
+# Cross Compiling for Windows
+
+We all hate Windows, right? As much as we hate it, people still use it, so it's nice to be able to run our good software on their crappy platform.
+
+You'll need the cross compiler (install command is for Arch and derivatives):
+
+```sh
+sudo pacman -S mingw-w64-gcc
+```
+
+First, cross compile libffi for Windows (look up a guide) and install it to `/usr/x86_64-w64-mingw32/`.
+
+Cross compile for Windows with the following commands:
+
+```sh 
+meson setup --cross-file x86_64-w64-mingw32.txt -Ddefault_library=static --prefix=/usr/x86_64-w64-mingw32/ windows-builddir
+meson compile -C windows-builddir
+```
+
+If you'd like it to be installed as a library to link with (for example with Solstice), run 
+
+```sh 
+meson install -C windows-builddir
+```
+
+This will install it to `/usr/x86_64-w64-mingw32/`, for convenient usage with other Windows cross compilation projects.
+
 You may need to run `ldconfig` or reboot to update your ld cache.
 
 ## Bytecode Format