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build_guide.md

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Build StratoVirt from source

1. Check Rust environment

To build StratoVirt, make sure that Rust language environment and Cargo have already been installed. The recommended version of rustc is 1.64.0 or later, otherwise compilation may be failed.

$ rustc --version
rustc 1.64.0

If you want to deploy rust environment, the following link will help you:

https://www.rust-lang.org/tools/install

2. Build with glibc

With glibc, StratoVirt is linked dynamically. It's the default target to build StratoVirt.

# Add gnu rust tool-chain, if installed, skip
$ arch=`uname -m`
$ rustup target add ${arch}-unknown-linux-gnu

# Build StratoVirt
$ cargo build --workspace --bins --release --target ${arch}-unknown-linux-gnu

Now you can find StratoVirt binary file in target/${arch}-unknown-linux-gnu/release/stratovirt.

3. Build with musl-libc

StratoVirt can also be built using musl-libc toolchains. By this way, StratoVirt is linked statically and has no library dependencies.

# Add musl rust tool-chain, if installed, skip
$ arch=`uname -m`
$ rustup target add ${arch}-unknown-linux-musl

# Build StratoVirt
$ cargo build --workspace --bins --release --target ${arch}-unknown-linux-musl

Now you can find StratoVirt static binary file in target/${arch}-unknown-linux-musl/release/stratovirt.

4. Build with features

For different scenarios, StratoVirt provides feature conditional compilation options based on the cargo feature.

List of optional features:

  • scream_alsa: enable virtual sound card with ALSA interface
  • scream_pulseaudio: enable virtual sound card with PulseAudio interface
  • usb_host: enable USB Host device
  • usb_camera_v4l2: enable USB camera with v4l2 backend
  • gtk: enable GTK display
  • vnc: enable VNC display
  • ramfb: enable ramfb display device
  • virtio_gpu: enable virtio-gpu virtualized graphics card
$ cargo build --workspace --bins --release --features "scream_alsa"

Build static StratoVirt in containers

1. Check docker environment

In order to build StratoVirt in containers, ensure that the docker software is installed. This can be checked with the following command:

$ docker -v
Docker version 18.09.0

If you want to deploy a docker environment, the following link can help you:

https://docs.docker.com/get-docker/

2. Run the build script

Run the script under tools/build_stratovirt_static directory to automatically run a docker container to build a statically linked StratoVirt.

$ cd tools/build_stratovirt_static
# Build StratoVirt with your custom_image_name
$ sh build_stratovirt_from_docker.sh custom_image_name

After the build is complete, you can find the statically linked binary StratoVirt in the path: target/${arch}-unknown-linux-musl/release/stratovirt.