Cross compile RUST application for Android (uses standalone toolchains, NDK >= 19 required)

BuildRustAppForAndroid.sh

# arm
export PATH=$PATH:$HOME/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin
export CC=armv7a-linux-androideabi19-clang
export CXX=armv7a-linux-androideabi19-clang++
~/.cargo/bin/cargo build --target armv7-linux-androideabi

# aarch64
export PATH=$PATH:$HOME/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin
export CC=aarch64-linux-android21-clang
export CXX=aarch64-linux-android21-clang++
~/.cargo/bin/cargo build --target aarch64-linux-android

# x86
export PATH=$PATH:$HOME/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin
export CC=i686-linux-android19-clang
export CXX=i686-linux-android19-clang++
~/.cargo/bin/cargo build --target i686-linux-android

# x86_64
export PATH=$PATH:$HOME/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin
export CC=x86_64-linux-android21-clang
export CXX=x86_64-linux-android21-clang
~/.cargo/bin/cargo build --target x86_64-linux-android


##################################################################

# All ABIs
cargo clean
export PATH=$PATH:$HOME/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin

export CC=armv7a-linux-androideabi19-clang
export CXX=armv7a-linux-androideabi19-clang++
~/.cargo/bin/cargo build --target armv7-linux-androideabi

export CC=aarch64-linux-android21-clang
export CXX=aarch64-linux-android21-clang++
~/.cargo/bin/cargo build --target aarch64-linux-android

export CC=i686-linux-android19-clang
export CXX=i686-linux-android19-clang++
~/.cargo/bin/cargo build --target i686-linux-android

export CC=x86_64-linux-android21-clang
export CXX=x86_64-linux-android21-clang
~/.cargo/bin/cargo build --target x86_64-linux-android