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Boytacean Libretro

Build

cargo build

Cross Compilation

Arm64 Linux

Download the linux toolchain from Arm GNU Toolchain Downloads.

Set the env variable ARM64_TOOLCHAIN to the path of the toolchain directory.

Create a toolchain symbolic link using the following command in Unix:

ln -s $ARM64_TOOLCHAIN aarch64-linux-gnu

... and the following command in Windows (cmd vs powershell):

mklink /D aarch64-linux-gnu %ARM64_TOOLCHAIN%
New-Item -ItemType SymbolicLink -Path aarch64-linux-gnu -Target $env:ARM64_TOOLCHAIN

To install the Rust targets for Arm64 Linux using rustup run:

rustup target add aarch64-unknown-linux-gnu

Then you're ready to build Boytacean's libretro core:

cargo build --target=aarch64-unknown-linux-gnu --release

Android

Configure NDK_HOME environment variable to point to your Android NDK directory and then create local toolchain replicas in the root project directory using:

mkdir -p ndk
${NDK_HOME}/build/tools/make_standalone_toolchain.py --api 26 --arch arm64 --install-dir ndk/arm64
${NDK_HOME}/build/tools/make_standalone_toolchain.py --api 26 --arch arm --install-dir ndk/arm
${NDK_HOME}/build/tools/make_standalone_toolchain.py --api 26 --arch x86 --install-dir ndk/x86

To install the Rust targets for Android using rustup run:

rustup target add aarch64-linux-android
rustup target add armv7-linux-androideabi
rustup target add i686-linux-android

Then you're ready to build Boytacean's libretro core using the following commands (for release builds):

cargo build --target=aarch64-linux-android --release
cargo build --target=armv7-linux-androideabi --release
cargo build --target=i686-linux-android --release

Run

Mac OS

cargo build --release
cp -p ../../target/release/libboytacean_libretro.dylib ~/Library/Application\ Support/RetroArch/cores/boytacean_libretro.dylib
cp -p res/boytacean_libretro.info ~/Library/Application\ Support/RetroArch/info/boytacean_libretro.info

Then you should be able to see the Core available in RetroArch.

If there's a new for debugging information to be display in RetroArch console then use:

export RUST_BACKTRACE=1
cargo build --features debug
cp -p ../../target/debug/libboytacean_libretro.dylib ~/Library/Application\ Support/RetroArch/cores/boytacean_libretro.dylib