Re: Building Octave from source

[SOLVED] Thanks, as it turns I had not given -DENABLE_KLU=ON as one of the
configuration options. Now I do not get the "SUNLINSOL_KLU or
sunlinksol_klu.h is not usable error", and I can compile without
CPPFLAGS="-I/usr/include/suitesparse"
.

On Thu, Dec 31, 2020 at 7:01 PM Markus Mützel <[email protected]> wrote:

> Am 31. Dezember 2020 um 14:15 Uhr schrieb "Sambeet Panigrahi":
> > I found out the suitesparse version using
> > $ sudo ldconfig -v | grep libsuitesparse
> > sbin/ldconfig.real: /lib/x86_64-linux-gnu/ld-2.31.so[http://ld-2.31.so]
> is the dynamic linker, ignoring
> >
> > libsuitesparseconfig.so.5 -> libsuitesparseconfig.so.5.7.1
> > /sbin/ldconfig.real: /lib32/ld-2.31.so[http://ld-2.31.so] is the
> dynamic linker, ignoring
> >
> > However the Sundials version was 3.1. So I updated it to sundials 5.1
> which I compiled from source code available from
> > here[https://computing.llnl.gov/projects/sundials/sundials-software]
> > Now I get the following error while building from source.
> >
> > configure: WARNING: SUNDIALS IDA library not configured with
> SUNLINSOL_KLU or sunlinksol_klu.h is not usable.  The solvers ode15i and
> ode15s will not support the sparse Jacobian feature.
>
> This isn't an error. It's just a warning from configure that some features
> of ode15i and ode15s will be disabled.
> Do you need those features? If not, just build without SUNLINSOL_KLU.
>
> > The command I gave was :
> > ./../configure --prefix=$HOME/my_octave
> >
> > Even with the CPP flag like below, I get the same error:
> > ./../configure --prefix=$HOME/my_octave
> CPPFLAGS="-I/usr/include/suitesparse"
> >
> > In the compile output,
> > checking for sunlinsol/sunlinsol_klu.h... no
> > checking for SUNKLU in -lsundials_sunlinsolklu... no
> > configure: WARNING: SUNDIALS IDA library not configured with
> SUNLINSOL_KLU or sunlinksol_klu.h is not usable.  The solvers ode15i and
> ode15s will not support the sparse Jacobian feature.
> >
> > But in the /usr/include/sunlinsol...I could not find a sunlinsol_klu.h
> library. Do I need to edit the configure.ac[http://configure.ac] file in
> someway to make this work?
>
> Did you configure SUNDIALS to build with SUNLINSOL_KLU (cmake
> -DKLU_ENABLE=ON)?
>
> Where did you install your self-compiled SUNDIALS? AFAICT, that header is
> part of SUNDIALS 5.1.0 (and is still in 5.6.1).
>
> Markus
>
>