[Octave-bug-tracker] [bug #57935] mkoctfile: unrecognized argument /path/to/libopenblas.so

[Rik]

Update of bug #57935 (project octave):

                  Status:               Confirmed => Need Info              

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Follow-up Comment #6:

The BLAS detection macro used by configure comes from GNU.  It can be found in
m4/ax_blas.m4.  The relevant part is


AC_ARG_WITH(blas,
        [AS_HELP_STRING([--with-blas=<lib>], [use BLAS library <lib>])])
case $with_blas in
        yes | "") ;;
        no) ax_blas_ok=disable ;;
        -* | */* | *.a | *.so | *.so.* | *.o) BLAS_LIBS="$with_blas" ;;
        *) BLAS_LIBS="-l$with_blas" ;;
esac


If you want to give an explicit file to link with, then the macro expects you
to add the "-l" ahead of it to make it a valid linking option.  If, instead,
you simply give a name, like "openblas" then the macro adds the necessary
prefix "-l" for you.

You might try running configure with


./configure
--with-blas=-l/usr/local/gcc-9.2.0_binutils-2.32_isl/lib64/libopenblas.so


and see if that generates an installation where mkoctfile works.  I'm guessing
from the error message that mkoctfile just puts the value of $BLAS_LIBS in the
compile command and that is why you are seeing


unrecognized argument
/usr/local/gcc-9.2.0_binutils-2.32_isl/lib64/libopenblas.so




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