punctually removing an rpath

[PIOTR LESNICKI]

Hi,

I'm using a set of applications compiled with spack for non-regression tests of a library.

In this use-case, I don't want to recompile applications each time I change the library. so I would like to unset rpath for just this library in all applications. I tested this on an application by removing the rpath afterwards with chrpath and I get what I wanted.

Can I do the same beforhand, and prevent just this prefix.lib to be added to the rpath of downstream applications ?

[PIOTR LESNICKI]

After some search it seems that is not possible: spack automatically adds prefix.lib and prefix.lib64 of all link depencies to rpath

To my knowledge there seems no way for a package to control its rpaths (maybe only adding something might be possible through libs).

[Marc Mengel]

You would have to do something Evil like monkeypatch the PackageBase.rpath() method to make
that happen consistently... 

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[Gamblin, Todd]

The other option here is to configure Spack to use RUNPATH instead of RPATH.  See the shared_linking option in config.yaml:

https://spack.readthedocs.io/en/latest/config_yaml.html#shared-linking

You can set this in an environment or in any of the config scopes.  Using RUNPATH lets you set LD_LIBRARY_PATH and override any RUNPATHs set on the binary.  RPATH has higher precedence than LD_LIBRARY_PATH.

-Todd

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