From the [GitHub project page][1]:

> Libcap-ng is a library for Linux that makes using posix capabilities
> easy.

virtiofsd requires libcap-ng:

    ../tools/meson.build:12:6: ERROR: Problem encountered: virtiofsd requires libcap-ng-devel and seccomp-devel

Run `autogen.sh` in the source directory, as it requires `configure.ac`
in the same directory, and Bee’s buildtype *autogen* is run from the
build directory. Running it manually, the buildtype *autotools* is used.

    [BEE] using magic buildtype 'autotools' from '/usr/libexec/bee/beesh.d/autotools.sh' ..

[1]: https://github.com/stevegrubb/libcap-ng/

From the [Web site][1]:

> The libseccomp library provides an easy to use, platform independent,
> interface to the Linux Kernel's syscall filtering mechanism. The
> libseccomp API is designed to abstract away the underlying BPF based
> syscall filter language and present a more conventional function-call
> based filtering interface that should be familiar to, and easily
> adopted by, application developers.

virtiofsd requires libseccomp:

    ../tools/meson.build:12:6: ERROR: Problem encountered: virtiofsd requires libcap-ng-devel and seccomp-devel

[1]: https://github.com/seccomp/libseccomp