Add patch to avoid threading issues.

openblas-0.3.2-threads.patch

@@ -0,0 +1,12 @@
+diff -up OpenBLAS-0.3.2/driver/others/memory.c.threads OpenBLAS-0.3.2/driver/others/memory.c
+--- OpenBLAS-0.3.2/driver/others/memory.c.threads	2018-07-30 07:25:01.000000000 +0200
++++ OpenBLAS-0.3.2/driver/others/memory.c	2018-08-24 18:45:36.826078344 +0200
+@@ -497,7 +497,7 @@ static const int allocation_block_size =
+ #if defined(SMP) && !defined(USE_OPENMP_UNUSED)
+ /* This is the number of threads than can be spawned by the server, which is the
+    server plus the number of threads in the thread pool */
+-#  define MAX_ALLOCATING_THREADS MAX_CPU_NUMBER * 2 * MAX_PARALLEL_NUMBER * 2
++#  define MAX_ALLOCATING_THREADS 8192
+ static int next_memory_table_pos = 0;
+ #  if defined(HAS_COMPILER_TLS)
+ /* Use compiler generated thread-local-storage */

openblas.spec

@@ -29,6 +29,8 @@ Patch1:         openblas-0.2.5-libname.patch
 Patch2:         openblas-0.2.15-constructor.patch
 # Supply the proper flags to the test makefile
 Patch3:         openblas-0.3.2-tests.patch
+# Crude hack to avoid problems with threading code (see https://github.com/xianyi/OpenBLAS/issues/1735)
+Patch4:         openblas-0.3.2-threads.patch
 
 BuildRequires:  gcc
 BuildRequires:  gcc-gfortran
@@ -250,6 +252,7 @@ cd OpenBLAS-%{version}
 %patch2 -p1 -b .constructor
 %endif
 %patch3 -p1 -b .tests
+%patch4 -p1 -b .threads
 
 # Fix source permissions
 find -name \*.f -exec chmod 644 {} \;
@@ -689,6 +692,9 @@ rm -rf %{buildroot}%{_libdir}/pkgconfig
 %endif
 
 %changelog
+* Fri Aug 24 2018 Susi Lehtola <jussilehtola@fedoraproject.org> - 0.3.2-4
+- Patch to avoid threading issues.
+
 * Fri Aug 24 2018 Susi Lehtola <jussilehtola@fedoraproject.org> - 0.3.2-3
 - Add missing %%{optflags} to COMMON (see discussion in #1619074).