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Shared libraries sometimes (frequently?) don't have a program interpreter specified. The previous code would fail to find the library dependencies in these cases because no interpreter could be found. Commonly, this meant that if a library depends on another library, it might not be included toolchain because dependency scanning stops with the first one. Instead, capture the program interpreter from the program or library that starts the dependency chain and use that interpreter to get all of the dependencies in the chain, recursively. Additionally, if no interpreter can be found, fallback to using ldd (From OE-Core rev: 4f55e61e9e3dd921bd71a127580dc5fc71d7b339) Signed-off-by: Joshua Watt <JPEWhacker@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>