Finding out where a software program or library comes from and how it was built without having direct access to the source code is not a trivial problem to solve. While versions of programs can be fairly accurately guessed this is a lot more difficult for build configuration. By comparing build identifiers from binaries of which nothing is known with build identifiers extracted from binaries for which source code and build information is available it is in certain cases possible to find out what source code and build information was used for a binary.
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Hemel, Armijn, "Using build identifiers to fingerprint ELF binaries and link to build information without having access to source code", Technical Disclosure Commons, (January 21, 2019)