What metadata you're asking for? Probably it is better to use exiftool for it.
Providing LibRaw binaries with 3rd-party decoders/decompressors compiled in (libjpeg, libdeflate/libz, libjasper, Adobe DNG SDK, GoPro SDK) may result into 3rd-party libraries version conflicts: for example LibRaw uses libjpeg-turbo, while calling applications is linked with standard jpeg libraries.
So, the developer who uses LibRaw should select LibRaw configuration and 3rd-party libraries used.
In general: LibRaw is for developers, not for end-users, provided samples are samples only to demonstrate LibRaw abilities.
What metadata you're asking for? Probably it is better to use exiftool for it.
Providing LibRaw binaries with 3rd-party decoders/decompressors compiled in (libjpeg, libdeflate/libz, libjasper, Adobe DNG SDK, GoPro SDK) may result into 3rd-party libraries version conflicts: for example LibRaw uses libjpeg-turbo, while calling applications is linked with standard jpeg libraries.
So, the developer who uses LibRaw should select LibRaw configuration and 3rd-party libraries used.
In general: LibRaw is for developers, not for end-users, provided samples are samples only to demonstrate LibRaw abilities.