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

sagemath-flexiblas.patch

@@ -0,0 +1,47 @@
+diff -up src/module_list.py.orig src/module_list.py
+--- src/module_list.py.orig	2019-10-03 16:51:55.350850836 -0300
++++ src/module_list.py	2019-10-03 16:52:06.479917297 -0300
+@@ -11,20 +11,17 @@ SAGE_INC = '/usr/include'
+ import pkgconfig
+ 
+ # CBLAS can be one of multiple implementations
+-cblas_pc = pkgconfig.parse('cblas')
+-cblas_libs = cblas_pc['libraries']
+-cblas_library_dirs = cblas_pc['library_dirs']
+-cblas_include_dirs = cblas_pc['include_dirs']
++cblas_libs = ['flexiblas']
++cblas_library_dirs = ['/usr/lib']
++cblas_include_dirs = ['/usr/include/flexiblas']
+ 
+ # TODO: Remove Cygwin hack by installing a suitable cblas.pc
+ if os.path.exists('/usr/lib/libblas.dll.a'):
+     cblas_libs = ['gslcblas']
+ 
+-# LAPACK can be one of multiple implementations
+-lapack_pc = pkgconfig.parse('lapack')
+-lapack_libs = lapack_pc['libraries']
+-lapack_library_dirs = lapack_pc['library_dirs']
+-lapack_include_dirs = lapack_pc['include_dirs']
++lapack_libs = [ 'flexiblas' ]
++lapack_library_dirs = ['/usr/lib']
++lapack_include_dirs = ['/usr/include/flexiblas']
+ 
+ # GD image library
+ gd_pc = pkgconfig.parse('gdlib')
+diff -up src/sage/misc/cython.py.orig src/sage/misc/cython.py
+--- src/sage/misc/cython.py.orig	2019-10-03 16:51:42.848776173 -0300
++++ src/sage/misc/cython.py	2019-10-03 16:52:06.480917303 -0300
+@@ -35,10 +35,9 @@ from sage.misc.sage_ostools import resto
+ 
+ 
+ # CBLAS can be one of multiple implementations
+-cblas_pc = pkgconfig.parse('cblas')
+-cblas_libs = list(cblas_pc['libraries'])
+-cblas_library_dirs = list(cblas_pc['library_dirs'])
+-cblas_include_dirs = list(cblas_pc['include_dirs'])
++cblas_libs = ['flexiblas']
++cblas_library_dirs = ['/usr/lib']
++cblas_include_dirs = ['/usr/include/flexiblas']
+ 
+ standard_libs = [
+     'mpfr', 'gmp', 'gmpxx', 'stdc++', 'pari', 'm',

sagemath.spec

@@ -11,6 +11,15 @@
 %bcond_without bundled_widgetsnbextension
 %bcond_without install_hack
 
+%if 0%{?fedora} >= 33
+%bcond_without flexiblas
+%endif
+%if %{with flexiblas}
+%global blaslib flexiblas
+%else
+%global blaslib openblas
+%endif
+
 # jmol has been retired from Fedora; set this if it ever comes back
 %bcond_with jmol
 
@@ -94,7 +103,7 @@
 Name:		sagemath
 Summary:	A free open-source mathematics software system
 Version:	9.1
-Release:	2%{?dist}
+Release:	3%{?dist}
 # The file ${SAGE_ROOT}/COPYING.txt is the upstream license breakdown file
 # Additionally, every $files section has a comment with the license name
 # before files with that license
@@ -183,8 +192,8 @@ Patch21:	%{name}-arb.patch
 # Add missing include paths
 Patch22:	%{name}-includes.patch
 
-# Use openblas
-Patch23:	%{name}-openblas.patch
+# Use [flexi/open]blas
+Patch23:	%{name}-%{blaslib}.patch
 
 # Fix paths to latte-integrale binaries
 Patch24:	%{name}-latte.patch
@@ -275,7 +284,6 @@ BuildRequires:	jsmol
 %endif
 BuildRequires:	jsmath-fonts
 BuildRequires:	L-function-devel
-BuildRequires:	lapack-devel
 BuildRequires:	latte-integrale
 BuildRequires:	libbraiding-devel
 BuildRequires:	libfplll-devel
@@ -294,7 +302,7 @@ BuildRequires:	mcqd-devel
 BuildRequires:	mpfi-devel
 BuildRequires:	nauty
 BuildRequires:	ntl-devel
-BuildRequires:	openblas-devel
+BuildRequires:	%{blaslib}-devel
 BuildRequires:	openssl
 BuildRequires:	palp
 BuildRequires:	pari-devel
@@ -1816,6 +1824,9 @@ rm -fr %{SAGE_LOCAL}/var/lib/sage/installed/database_cremona_ellcurve-%{cremona_
 
 ########################################################################
 %changelog
+* Thu Aug 13 2020 Iñaki Úcar <iucar@fedoraproject.org> - 9.1-3
+- https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 9.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild