https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager

eigen3.spec

@@ -4,9 +4,15 @@
 # debuginfo package for the empty main package.
 %global debug_package %{nil}
 
+%if 0%{?fedora} >= 33
+%global blaslib flexiblas
+%else
+%global blaslib openblas
+%endif
+
 Name:           eigen3
 Version:        3.3.7
-Release:        6%{?dist}
+Release:        7%{?dist}
 Summary:        A lightweight C++ template library for vector and matrix math
 
 License:        MPLv2.0 and LGPLv2+ and BSD
@@ -22,7 +28,7 @@ Patch1:         eigen_pkgconfig.patch
 # Fix the include paths in the new Eigen3Config.cmake file
 Patch2:         eigen3-3.3.1-fixcmake.patch
 
-BuildRequires:  atlas-devel
+BuildRequires:  %{blaslib}-devel
 BuildRequires:  fftw-devel
 BuildRequires:  glew-devel
 BuildRequires:  gmp-devel
@@ -74,7 +80,7 @@ Developer documentation for Eigen.
 %build
 %cmake \
     -DINCLUDE_INSTALL_DIR=%{_includedir}/eigen3 \
-    -DBLAS_LIBRARIES="cblas" \
+    -DBLAS_LIBRARIES="-l%{blaslib}" \
     -DSUPERLU_INCLUDES=%{_includedir}/SuperLU \
     -DSCOTCH_INCLUDES=%{_includedir} -DSCOTCH_LIBRARIES="scotch" \
     -DMETIS_INCLUDES=%{_includedir} -DMETIS_LIBRARIES="metis" \
@@ -110,6 +116,9 @@ rm -f %{_vpath_builddir}/doc/html/unsupported/installdox
 
 
 %changelog
+* Tue Sep 01 2020 Iñaki Úcar <iucar@fedoraproject.org> - 3.3.7-7
+- https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager
+
 * Sat Aug 29 2020 Fabio Valentini <decathorpe@gmail.com> - 3.3.7-6
 - Adapt to CMake macros changes in fedora 33+.