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On Buildroot, given a package P, I'm trying to know, textually, all the packages that depend on P.

I already know about make <pgk>-graph-depends command, but this command shows what packages P depends, but I want to know who depends on P.

I'm using Buildroot version 2015-08.

Thanks

Henrique Jung
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George Redivo
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3 Answers3

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Well, just do a full dependency graph (make graph-depends) and follow the arrows that point to package P. The dot file is a text file and can easily be parsed. Of course, that only gives you the reverse dependencies of P enabled in your current configuration, and not all possible reverse dependencies of P.

Arnout
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Thomas Petazzoni
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1

If you want to check dependencies of all packages, not just the ones you have selected in the configuration, you can use make printvars. For example, if you want to find all the packages that need openssl, you can do:

make printvars | \
    grep openssl | \
    sed -n '/\(.*\)_FINAL_ALL_DEPENDENCIES=.*/s//\1/p'

Note that this still depends on your configuration, because optional dependencies will only be included if the package is actually selected.

Arnout
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For reverse dependencies use make <pgk>-graph-rdepends to create a graph.

If you want to just display the list of dependencies and reverse dependencies then you can use make <pgk>-show-depends and make <pgk>-show-rdepends for first order dependencies.

For all direct and indirect dependencies use make <pgk>-show-recursive-depends and make <pgk>-show-recursive-rdepends

Rahul Khurana
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