Workaround for race contions during building

mathgl.spec

@@ -1,6 +1,6 @@
 Name:          mathgl
 Version:       2.2.1
-Release:       1%{?dist}
+Release:       2%{?dist}
 Summary:       Cross-platform library for making high-quality scientific graphics
 Summary(de):   Plattformübergreifende Bibliothek für hochwertige wissenschaftliche Graphiken
 Summary(ru):   Библиотека для осуществления высококачественной визуализации данных
@@ -32,8 +32,6 @@ Patch5:        mathgl-2.2.1-no_qt4_qt5.patch
 # Fix bug with CalcXYZ() function and others. Upstream.
 Patch50:       mathgl-2.2.1-segfaults.patch
 
-BuildRoot:     %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-
 Requires:      %{name}-common = %{version}-%{release}
 
 # mandatory packages
@@ -199,6 +197,9 @@ sed -i s,/usr/local/share/mathgl/fonts/,%{_datadir}/%{name}/fonts/, udav/prop_dl
 
 %build
 
+OMP_NUM_THREADS=1
+export OMP_NUM_THREADS
+
 %define building() \
 BUILD_MPI="-Denable-mpi=on -Denable-all-docs=off" %buildcommon
 
@@ -240,7 +241,6 @@ MPI_COMPILER_NAME=mpich %building
 %{_mpich_unload}
 
 %install
-rm -rf %{buildroot}
 
 # MPI install libs only
 %define installing() \
@@ -357,6 +357,9 @@ fi
 %{_includedir}/mpich-%{_arch}/mgl2/
 
 %changelog
+* Fri Feb  7 2014 Dmitrij S. Kryzhevich <krege@land.ru> - 2.2.1-2
+- Workaround for race condition during package building.
+
 * Tue Feb  4 2014 Dmitrij S. Kryzhevich <krege@land.ru> - 2.2.1-1
 - Update for new 2.2.1.