From 9dd4f5fc05412f9702a6065ce32c9da4c66b6749 Mon Sep 17 00:00:00 2001
From: Iñaki Úcar <iucar@fedoraproject.org>
Date: Aug 16 2020 12:00:07 +0000
Subject: https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager


---

diff --git a/root-add-flexiblas-detection.patch b/root-add-flexiblas-detection.patch
new file mode 100644
index 0000000..bcf8063
--- /dev/null
+++ b/root-add-flexiblas-detection.patch
@@ -0,0 +1,31 @@
+From 2f3c530cd8c8b9adc0303e2ae24a069f671aee1c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?I=C3=B1aki=20=C3=9Acar?= <iucar@fedoraproject.org>
+Date: Sun, 16 Aug 2020 13:46:21 +0200
+Subject: [PATCH] add flexiblas detection
+
+---
+ cmake/modules/SearchInstalledSoftware.cmake | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/cmake/modules/SearchInstalledSoftware.cmake b/cmake/modules/SearchInstalledSoftware.cmake
+index f1c6ee27..12aa822f 100644
+--- a/cmake/modules/SearchInstalledSoftware.cmake
++++ b/cmake/modules/SearchInstalledSoftware.cmake
+@@ -1496,7 +1496,13 @@ endif()
+ if(tmva)
+   if(tmva-cpu AND imt)
+     message(STATUS "Looking for BLAS for optional parts of TMVA")
+-    find_package(BLAS)
++    pkg_check_modules(FLEXIBLAS flexiblas)
++    set(BLAS_FOUND ${FLEXIBLAS_FOUND})
++    set(BLAS_LIBRARIES "${FLEXIBLAS_LIBRARIES}")
++    set(BLAS_LINKER_FLAGS)
++    if (NOT BLAS_FOUND)
++      find_package(BLAS)
++    endif()
+     if(NOT BLAS_FOUND)
+       if (GSL_FOUND)
+         message(STATUS "Using GSL CBLAS for optional parts of TMVA")
+-- 
+2.25.2
+
diff --git a/root.spec b/root.spec
index fd2d1be..75dba66 100644
--- a/root.spec
+++ b/root.spec
@@ -30,6 +30,12 @@
 %global tbb 0
 %endif
 
+%if 0%{?fedora} >= 33
+%global blaslib flexiblas
+%else
+%global blaslib blas
+%endif
+
 # Do not create .orig files when patching source
 %global _default_patch_flags --no-backup-if-mismatch
 
@@ -39,7 +45,7 @@
 Name:		root
 Version:	6.22.00
 %global libversion %(cut -d. -f 1-2 <<< %{version})
-Release:	5%{?dist}
+Release:	6%{?dist}
 Summary:	Numerical data analysis framework
 
 License:	LGPLv2+
@@ -139,6 +145,8 @@ Patch31:	%{name}-fix-bad-regex.patch
 #		Compatibility with xrootd 5
 #		https://github.com/root-project/root/pull/6031
 Patch32:	%{name}-xrootd5-compat.patch
+#   Enable FlexiBLAS detection
+Patch33:  %{name}-add-flexiblas-detection.patch
 
 #		s390x suffers from endian issues resulting in failing tests
 #		and broken documentation generation
@@ -217,7 +225,7 @@ BuildRequires:	gcc-gfortran
 BuildRequires:	graphviz-devel
 BuildRequires:	expat-devel
 BuildRequires:	pythia8-devel >= 8.1.80
-BuildRequires:	blas-devel
+BuildRequires:	%{blaslib}-devel
 BuildRequires:	python%{python3_pkgversion}-numpy
 BuildRequires:	doxygen
 BuildRequires:	graphviz
@@ -1839,6 +1847,7 @@ This package contains an ntuple extension for ROOT 7.
 %patch30 -p1
 %patch31 -p1
 %patch32 -p1
+%patch33 -p1
 
 # Remove bundled sources in order to be sure they are not used
 #  * afterimage
@@ -3464,6 +3473,9 @@ fi
 %endif
 
 %changelog
+* Sun Aug 16 2020 Iñaki Úcar <iucar@fedoraproject.org> - 6.22.00-6
+- https://fedoraproject.org/wiki/Changes/FlexiBLAS_as_BLAS/LAPACK_manager
+
 * Tue Aug 11 2020 Mattias Ellert <mattias.ellert@physics.uu.se> - 6.22.00-5
 - Fix wrong symlinks in EPEL 7 python2-root package