Compile for Android

[kochia3]

How can I compile libbpf-rs based project for Android, x86_64 emulator or for arm64?

[insearchoflosttime]

Hi @kochia3, I'm not sure I fully understand your question. rustc is a cross-compiler, so it can generate targets for any architecture. Can you elaborate on your question?

[kochia3]

I was unable to do so, for example https://github.com/libbpf/libbpf-bootstrap uses xmake and ndk for that

[danielocfb]

arm64 can be done similarly as we already do in CI:

libbpf-rs/.github/workflows/test.yml

Lines 107 to 136 in a2a62c3

	build-aarch64:
	name: Build for aarch64
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Add apt sources for arm64
	run: |
	dpkg --add-architecture arm64
	release=$(. /etc/os-release && echo "$UBUNTU_CODENAME")
	sed -i 's/^deb /deb [arch=amd64] /' /etc/apt/sources.list
	printf 'deb [arch=arm64] http://ports.ubuntu.com/ %s main restricted\n' \
	$release $release-updates $release-security \
	>> /etc/apt/sources.list
	shell: sudo sh -e {0}
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	target: aarch64-unknown-linux-gnu
	override: true
	- name: Install deps
	run: |
	sudo apt-get update
	sudo apt-get install -y libelf-dev:arm64 zlib1g-dev:arm64 gcc-aarch64-linux-gnu
	- uses: Swatinem/rust-cache@v2.2.0
	- name: Build
	env:
	CARGO_BUILD_TARGET: aarch64-unknown-linux-gnu
	RUSTFLAGS: -C linker=/usr/bin/aarch64-linux-gnu-gcc
	run: cargo build --lib

Similar procedures will allow for compilation on different architectures. I don't believe we are familiar enough with Android to provide any guidance there. If you got something working, please feel free to open a pull request.