Add Linux to Windows cross-compilation script.

README.md

@@ -11,5 +11,17 @@ Github repository for egui-sdl2-event.
 
 `cargo run --bin egui-sdl2-event-example`
 
+## Cross compile from Linux to Windows with static linking
+
+1. Download `SDL2-devel-2.XX.X-mingw.zip` from [here](https://github.com/libsdl-org/SDL/releases) and extract to your
+   specified location. Best to use the same version that `rust-sdl2` uses.
+2. Install Windows toolchain target with `rustup target add x86_64-pc-windows-gnu`
+3. Install `mingw` cross-compiler to your system, for Arch systems the package to install should be `mingw-w64-gcc`
+4. Edit the [egui-sdl2-event-example/cross_compile_windows.sh](egui-sdl2-event-example/cross_compile_windows.sh) script
+   to match your system's paths and run it.
+5. You should now have windows executable in your `target/x86_64-pc-windows-gnu/release/` which you can run with `wine`.
+   I don't have a Windows machine at the moment, so I cannot verify that it works on real Windows machine, yet.
+
+
 
 

egui-sdl2-event-example/Cargo.toml

@@ -8,8 +8,4 @@ sdl2 = { version= "0.37.0", features = ["raw-window-handle",  "bundled", "static
 egui-sdl2-event = { path = "../lib" }
 egui-wgpu = "0.28.1"
 egui = "0.28.1"
-# wgpu = "22.0.0"
 pollster = "0.2.5"
-
-
-

egui-sdl2-event-example/cross_compile_windows.sh

@@ -0,0 +1,8 @@
+# #!/bin/bash
+# Edit this to match the SDL2 mingw development files you downloaded and extracted somewhere:
+MINGW_SDL2_LIB_DIR=" /home/${USER}/lib/SDL2-2.30.5/x86_64-w64-mingw32/lib/"
+
+# Edit these to match your system's mingw cross-compiler locations:
+MINGW_GCC_PATH="/usr/bin/x86_64-w64-mingw32-gcc"
+MINGW_AR_PATH="/usr/x86_64-w64-mingw32/bin/ar"
+RUSTFLAGS="-L${MINGW_SDL2_LIB_DIR}" CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER="${MINGW_GCC_PATH}" AR="${MINGW_AR_PATH}" cargo build --release --target x86_64-pc-windows-gnu