FAILED (no external dependency "libportaudio") opam => [build portaudio.0.2.0 OCamlPro/opam-repository:master with 4.01.0 on Darwin (x86_64)]

/github/OCamlPro/opam-repository/task/14384
FAILED (error in dependency "ogg.0.4.3" (no external dependency "ogg.pc")) opam => [build schroedinger.0.1.0 OCamlPro/opam-repository:master with 4.01.0 on FreeBSD (x86_64)]

/github/OCamlPro/opam-repository/task/13731