[Scons-users] Replacement for SharedLibrarySignatureOverride

[Andrew C. Morrow]

Hi SCons Users -

Digging up this old thread to share that I've published a blog post on my
findings from trying to use libabigail to build a better
SharedLibrarySignatureOverride. If you are interested, you can find it here:

https://engineering.mongodb.com/post/pruning-dynamic-rebuilds-with-libabigail

Thanks,
Andrew


On Sat, Jul 25, 2015 at 12:19 AM, Andrew C. Morrow <
andrew.c.morrow at gmail.com> wrote:

>
> This page https://bitbucket.org/scons/scons/wiki/
> SharedLibrarySignatureOverride on the SCons Wiki demonstrates one way to
> suppress unnecessary relinking when a shared library dependency has been
> re-linked but has not actually changed ABI.
>
> However, the mechanism that it uses seems fragile and relies on some
> deprecated SCons APIs like TargetSignatures.
>
> I've just made available an attempt to write an updated Tool based on the
> new 'abidw' utility associated with libabigail. The abidw utility writes
> out an XML representation of the ABI of a shared library based on the DWARF
> info in the library. The new Tool uses the MD5 hash of the abidw output as
> the content signature for Nodes built with the SharedLibrary builder.
>
> https://github.com/mongodb/mongo/blob/e9fc3c3ae2b83539d36856d2f1b579
> 4019b6b41b/site_scons/site_tools/abilink.py
>
> Thoughts on the approach or feedback on the implementation are very
> welcome. I'm sure it can be improved.
>
> Thanks,
> Andrew
>
>
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