Comment # 4 on bug 1207989 from Richard Biener

Yes this was for the lapack (source) package.

The main issue is that there's no agreed upon ABI all of the implementations
have to supply and what to do with symbols provided that are out of this
set of common symbols.

Plus there's no QA that all of the implementations do provide these functions
and best not any additional ones (like the testing ones that got into lapacke).

--

It might be possible for example to have a separate lapack-abi package
that provides a linker script that can be used to hide unwanted symbols
plus maybe some test program testing availability of wanted symbols.