[petsc-dev] Compiling PETsc against openblas on Linux

[Antonio Trande]

Hello everyone.

How to configure correctly PETsc compilation against OpenBLAS?

'openblas' libraries are

/usr/include/openblas/*
/usr/lib(64)/libopenblas.so
/usr/lib(64)/libopenblas.a
/usr/lib(64)/libopenblas64.so

If i use

..
 --with-openblas=1 \
 --with-openblas-include=%{_includedir} \
 --with-openblas-lib=%{_libdir}/libopenblas.so \
 --known-64-bit-blas-indices=0 \
..

Configure fails with

TEST configureLibrary from
config.packages.openblas(/home/sagitter/rpmbuild/BUILD/petsc-3.9.3/petsc-3.9.3/config/BuildSystem/config/packages/openblas.py:25)
TESTING: configureLibrary from
config.packages.openblas(config/BuildSystem/config/packages/openblas.py:25)
==================================================================================
              Checking for a functional openblas
              Not checking for library in User specified OPENBLAS
libraries: [] because no functions given to check for
================================================================================
TEST check from
config.libraries(/home/sagitter/rpmbuild/BUILD/petsc-3.9.3/petsc-3.9.3/config/BuildSystem/config/libraries.py:155)
TESTING: check from
config.libraries(config/BuildSystem/config/libraries.py:155)
  Checks that the library "libName" contains "funcs", and if it does
defines HAVE_LIB"libName"
       - libDir may be a list of directories
       - libName may be a list of library names
                  No functions to check for in library [] []
              Checking for headers User specified OPENBLAS libraries: []
**** Configure header /tmp/petsc-y1LlML/confdefs.h ****

-- 
---
Antonio Trande
Fedora Project
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