bevy/docs/linux_dependencies.md

Installing Linux dependencies

This page lists the required dependencies to build a Bevy project on your Linux machine.

If you don't see your distro present in the list, feel free to add the instructions in this document.

Ubuntu 20.04

sudo apt-get install g++ pkg-config libx11-dev libasound2-dev libudev-dev

Depending on your graphics card, you may have to install one of the following: vulkan-radeon, vulkan-intel, or mesa-vulkan-drivers

Compiling with clang is also possible - replace the g++ package with clang.

Windows Subsystem for Linux (WSL 2)

Graphics and audio need to be configured for them to work with WSL 2 backend. Please see the ubuntu WSL documentation on how to set up graphics and audio.

Fedora

sudo dnf install gcc-c++ libX11-devel alsa-lib-devel systemd-devel

If there are errors with linking during the build process such as:

 = note: /usr/bin/ld: skipping incompatible /usr/lib/libasound.so when searching for -lasound
          /usr/bin/ld: skipping incompatible /usr/lib/libasound.so when searching for -lasound
          /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-redhat-linux/10/../../../libasound.so when searching for -lasound
          /usr/bin/ld: skipping incompatible /lib/libasound.so when searching for -lasound
          /usr/bin/ld: skipping incompatible /usr/lib/libasound.so when searching for -lasound
          /usr/bin/ld: cannot find -lasound

Add your arch to the end of the package to remove the linker error. For example:

sudo dnf install alsa-lib-devel.x86_64

Arch / Manjaro

sudo pacman -S libx11 pkgconf alsa-lib

Void

sudo xbps-install -S pkgconf alsa-lib-devel libX11-devel eudev-libudev-devel

NixOS

Add a build.rs file to your project containing:

# build.rs

fn main() {
    if cfg!(target_os = "linux") {
        println!("cargo:rustc-link-lib=vulkan");
    }
}

These packages provide the dependencies required to run a bevy project. They can be installed globally or via nix-shell. Based on your global configuration it also might be necessary to allow unfree packages:

export NIXPKGS_ALLOW_UNFREE=1 # needed for lutris
nix-shell -p cargo pkgconfig udev lutris alsaLib x11 xorg.libXcursor xorg.libXrandr xorg.libXi vulkan-tools vulkan-headers vulkan-loader vulkan-validation-layers

Alternatively, you can define shell.nix containing:

# shell.nix

{ pkgs ? import <nixpkgs> { } }:
with pkgs;
mkShell {
  buildInputs = [
    cargo
    pkgconfig udev alsaLib lutris
    x11 xorg.libXcursor xorg.libXrandr xorg.libXi
    vulkan-tools vulkan-headers vulkan-loader vulkan-validation-layers
  ];
}

And enter it by just running nix-shell.

You should be able compile bevy programms using cargo within this nix-shell.

Fast compilation

According to the Bevy getting started guide (for v0.5), you can enable fast compilation by add a Cargo config file and by adding lld and clang. As long as you add clang and lld to your environment, it should mostly work, but you'll still need to modify the Cargo config file so that it doesn't point to /usr/bin/clang anymore.

Working off the above files, let's make the necessary changes.

For .cargo/config.toml, change the path to the linker from /usr/bin/clang to clang:

  [target.x86_64-unknown-linux-gnu]
- linker = "/usr/bin/clang"
+ linker = "clang"
  rustflags = ["-Clink-arg=-fuse-ld=lld", "-Zshare-generics=y"]

In shell.nix, add lld and clang:

  buildInputs = [
    cargo
    pkgconfig udev alsaLib lutris
    x11 xorg.libXcursor xorg.libXrandr xorg.libXi
    vulkan-tools vulkan-headers vulkan-loader vulkan-validation-layers
+   clang lld
  ];

Building apps and using the GPU

If you run into issues with building basic apps or activating the GPU ('thread 'main' panicked at 'Unable to find a GPU!'), then you may need to update your environment's LD_LIBRARY_PATH. To solve issues relating to missing libudev.so.1 files, alsa drivers, and being unable to find a GPU, try updating the environment variable in your shell.nix by creating a shellHook:

  { pkgs ? import <nixpkgs> { } }:
  with pkgs;
  mkShell {
+   shellHook = ''export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${pkgs.lib.makeLibraryPath [
+     pkgs.alsaLib
+     pkgs.udev
+     pkgs.vulkan-loader
+   ]}"'';
    buildInputs = [

Opensuse Tumbleweed

   sudo zypper install libudev-devel gcc-c++