Installing optional dependencies - aczwink/StdPlusPlus GitHub Wiki
Backends
gtk3
Ubuntu
apt-get install libgtk-3-dev
Extensions
fuse3
Ubuntu
apt-get install libfuse3-dev
liblzma (XZ Utils)
macOS
brew install xz
OpenSSL
macOS
brew install openssl
apt-get install libgtk-3-dev
apt-get install libfuse3-dev
brew install xz
brew install openssl