Boost v1.0.0

Install

brew install --cask kernel-hunter/boost/boost

Or download Boost.zip below and drag it to Applications.

Boost is not notarized — it is signed with a local certificate, so
a direct download will be stopped by Gatekeeper the first time.
Homebrew handles this for you; if you downloaded the zip by hand,
right-click the app and choose Open.

Building it yourself avoids the question entirely:

git clone https://github.com/Kernel-Hunter/boost.git
cd boost && ./Scripts/build.sh

SHA-256: 2282ebcdf836236353f1bafdd294638b83511acbbdbfffb5b3a8b2b6b0fdd336