Note

This guide assumes that you're building for aarch64-linux-android only, but a similar approach should apply to other CPU architectures too.

To build and run lune for android, you need to do the following:

• Set up your cargo config:

[target.aarch64-linux-android]
ar = "$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ar"
rustflags = ["-C", "linker=aarch64-linux-android-clang", "-C", "link-args=-rdynamic", "-C", "default-linker-libraries"]
linker = "$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-clang"

• The latest android NDK has paths different from those that cargo expects, so we need to create the following symlinks:

  • $ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-ar -> aarch64-linux-android-ar
  • $ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang -> aarch64-linux-android-clang

• Make sure that $ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin is in your path.

• Build the binary:

cargo build --release --target aarch64-linux-android

• The compiled output can be found at: ./target/aarch64-linux-android/release/lune

• To run lune, we'll need libc++ for the linker as libc is always linked dynamically by cargo. We can find the library at $ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib/aarch64-linux-android/libc++_shared.so.

• On android, store the libc++_shared.so file at $PREFIX/lib/libc++_shared.so.

• Add the $PREFIX/lib to LD_LIBRARY_PATH.

export LD_LIBRARY_PATH=$PREFIX/lib

• Run lune.
• Profit?