Good idea to check with "strings" ... nothing familiar popped up, though.

I was able to convince myself by experiment that "strings" would have popped out the blas symbols if blas had been statically linked so that's a good tool for the toolbox.

thanks
Judah





On 5/25/25 17:54, Peter J. Teuben wrote:
Maybe a statc link. The strings command might give names you recognize

On Sun, May 25, 2025, 17:02 J. Milgram <milg...@cgpp.com> wrote:

    Here's a mystery I'm hoping someone can explain:

    I just built octave (9.2.0). As usual, an easy build.  But this
    time I'm
    curious: How can I confirm that it linked against OpenBLAS and not
    one
    of the  other blas's I  have installed?

    ldd /usr/bin/octave doesn't turn up any blas libraries at all. (huh?!)

    The build procedure  is advertised as using the first blas it
    finds from
    the list [ OpenBLAS, atlas, netlib reference implementation ]. I have
    the first and third installed so  am hoping for OpenBLAS.

    Anyone know a way to check this? Or why ldd doesn't show the
    executable
    linked to any blas at all?

    thanks! And a meaningful Mem Day to all.

    Judah



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