[Octave-bug-tracker] [bug #57112] `version -blas` reports wrong BLAS with LD_PRELOAD to force loading a different BLAS

[Mike Miller]

URL:
  <https://savannah.gnu.org/bugs/?57112>

                 Summary: `version -blas` reports wrong BLAS with LD_PRELOAD
to force loading a different BLAS
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Thu 24 Oct 2019 10:13:40 AM PDT
                Category: Octave Function
                Severity: 1 - Wish
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

If Octave is compiled against a particular BLAS implementation, say
"-lopenblas", but is run with LD_PRELOAD=/path/to/libblas.so to force a
different BLAS library to be used, the `version -blas` detection still reports
OpenBLAS.

This may not be solvable, because both the standard BLAS API as well as
OpenBLAS-specific functions are all present in the executable image in this
case.




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