in PR 47600.
NaCl (pronounced "salt") is a new easy-to-use high-speed
software library for network communication, encryption, decryption,
signatures, etc.
NaCl's goal is to provide all of the core operations needed to
build higher-level cryptographic tools.
libsodium is a library for network communication, encryption,
decryption, signatures, etc.
libsodium is a portable, cross-compilable, installable,
packageable, API-compatible version for NaCl.
One minor change was to take the "check" target out of the post-build
state and put it into the TEST_TARGET definition.