Build from source

In general, the following dependencies are required to build bolero from source.


  • The Rust toolchain (cargo, rustfmt, etc.) installed via rustup
  • make

bolero has been tested in Ubuntu 22.04 and macOS 12 platforms.

Ubuntu 22.04

sudo apt update
sudo apt install binutils-dev libunwind-dev

make comes pre-installed on Ubuntu, but if for some reason it isn't, it can be installed using the command:

sudo apt install make

macOS 12

make can be installed using the command:

xcode-select --install

No other dependencies are required.

Build and test

The Makefile located in the root directory can be used to build bolero and run it on several test suites. To execute it, just run:


This should compile bolero and run multiple tests. In the process, it's possible that you are shown the following message:

[-] Hmm, your system is configured to send core dump notifications to an
    external utility. This will cause issues: there will be an extended delay
    between stumbling upon a crash and having this information relayed to the
    fuzzer via the standard waitpid() API.

    To avoid having crashes misinterpreted as timeouts, please log in as root
    and temporarily modify /proc/sys/kernel/core_pattern, like so:

    echo core >/proc/sys/kernel/core_pattern

This message comes from AFL. You can either modify the file as indicated or re-run the make command as follows:


However, this doesn't guarantee that the AFL tests will pass. In that case, the best option is to temporarily modify the /proc/sys/kernel/core_pattern file.