Exclude dependencies of excluded libraries. about clodl HOT 5 CLOSED

The most practical option seems to be using a combination of ldd to get the paths of all dependencies and objdump to traverse the dependency tree of the binary, skipping the excluded libraries.

Some other options that I've considered follow.

Write a program which finds the libraries with objdump and follows the dependencies instead of using ldd. /sbin/ldconf -p and the RPATH provide the list of folders in which to search.

The downside is that we have to keep this tool adjusted to the specifics of each platform were clodl is used. An advantage is that we can possibly build the closure of cross-compiled binaries with this approach.

Another option is to use lddtree from pax-utils, to distinguish between direct and transitive dependencies. Unfortunately, lddtree produces several megabytes of output which takes a while to produce and consume.

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Using scanelf -qn (from pax-utils) is an option. It's what lddtree uses under the hood.

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Yeah, tried that. It provides the same info as objdump -p | grep NEEDED. Could use it in combination with ldd instead of objdump maybe.

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Work in progress: master...fd/deptree-walk

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Merged in e9f1339.

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