Re: Octave can't find BLAS or LAPACK

[John Ferreira]

Hello,

I have successfully added the -m32 flags to C, CPP and Fortran compilers. ./configure seems to work. However, when I run make -j5 I eventually get a make error:

Liboctave/system/lo-sysdep.cc:32:19: fatal error: codecvt: No such file or directory

#include<codecvt>

Is there a known fix for this issue?

Thank you,

John F

On Apr 10, 2022, at 4:56 PM, Dmitri A. Sergatskov <dasergatskov@gmail.com> wrote:



Please reply to the list.

You need to provide flags for C, C++, and Fortran compilers. 

For gcc/clang the flag is "-m32"

Try some kind of "Hello world" program first to make sure you got them right.

Dmitri.

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On Sun, Apr 10, 2022 at 4:47 PM John Ferreira <john.ferreira1978@gmail.com> wrote:

I tried passing CFLAG=“-mcpu=i686” 

I also tried CFLAG=“-march =i686”

But I still got the same BLAS and LAPACK error.

Thanks,

John

On Apr 10, 2022, at 4:34 PM, Dmitri A. Sergatskov <dasergatskov@gmail.com> wrote:



On Sun, Apr 10, 2022 at 4:26 PM John Ferreira <john.ferreira1978@gmail.com> wrote:

Hello,

I am attempting to build a recent version of octave as a 32--bit i686 package for RHEL 7. I have installed the BLAS and LAPACK packages but ./configure does not detect the libraries. I have the 32 bit packages including the -devel packages installed as seen below:

I have also tried passing the library paths in ./configure option as:

./configure  --prefix=/home/jferreira/builds/octaveCompile --with-blas=/usr/lib/libblas.so --with-lapack=/usr/lib/liblapack.so

I still get: configure: error: BLAS and LAPACK libraries are required.

Any help would be appreciated.

Did you tell your compiler to build i686 binary?

 

Thank you,

John Ferreira

Dmitri.

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