diff --git a/metis.spec b/metis.spec
index 4a9dbcf..48df27d 100644
--- a/metis.spec
+++ b/metis.spec
@@ -2,15 +2,22 @@
 %global _hardened_build 1
 %endif
 
+%if 0%{?rhel} < 7
+%{!?__global_ldflags: %global __global_ldflags -Wl,-z,relro}
+%endif
+
 Name:    metis
 Version: 5.1.0
-Release: 7%{?dist}
+Release: 8%{?dist}
 Summary: Serial Graph Partitioning and Fill-reducing Matrix Ordering
 License: ASL 2.0 and BSD and LGPLv2+
 Group:   Development/Libraries
 URL:     http://glaros.dtc.umn.edu/gkhome/views/%{name}
 Source0: http://glaros.dtc.umn.edu/gkhome/fetch/sw/%{name}/%{name}-%{version}.tar.gz
 
+##OpenMPI missing
+ExcludeArch: s390 s390x
+
 ## This patch sets up libmetis soname of libmetis
 Patch0:  %{name}-libmetis.patch
 
@@ -28,13 +35,7 @@ Patch2:  %{name}-width-datatype.patch
 ## This patch sets up GKREGEX, GKRAND, libsuffix options to the Makefiles 
 Patch4:  %{name}-GKREGEX-GKRAND-LIBSUFFIX-fix.patch
 
-%if 0%{?el6}
-BuildRequires: cmake28
-Conflicts:     cmake < 2.8
-%else
-BuildRequires: cmake >= 2.8
-%endif
-
+BuildRequires: cmake
 BuildRequires: openmpi-devel
 BuildRequires: pcre-devel
 BuildRequires: help2man
@@ -68,22 +69,18 @@ fi
 
 # Build metis
 cd build
-
-%if 0%{?el6}
-%cmake28 \
-%else
+export LDFLAGS="%{__global_ldflags} -Wl,-z,now"
 %cmake \
-%endif 
-        -DCMAKE_C_COMPILER=%{_bindir}/gcc \
-        -DCMAKE_CXX_COMPILER=%{_bindir}/g++ \
-        -DGKLIB_PATH=../GKlib  \
-        -DSHARED=1 \
-        -DOPENMP=%{_includedir}/openmpi-%{_arch} \
-        -DPCRE=%{_includedir} \
-        -DCMAKE_CXX_FLAGS="%{optflags} -Wl,-z,now -fopenmp -pthread" \
-        -DCMAKE_C_FLAGS="%{optflags} -Wl,-z,now -fopenmp -pthread" \
-        -DCMAKE_VERBOSE_MAKEFILE=1 \
-        -DCMAKE_INSTALL_PREFIX=%{_prefix} ..
+ -DCMAKE_C_COMPILER=%{_bindir}/gcc \
+ -DCMAKE_CXX_COMPILER=%{_bindir}/g++ \
+ -DGKLIB_PATH=../GKlib  \
+ -DSHARED=1 \
+ -DOPENMP=%{_includedir}/openmpi-%{_arch} \
+ -DPCRE=%{_includedir} \
+ -DCMAKE_CXX_FLAGS="%{optflags} -Wl,-z,relro -DNDEBUG -Wl,-z,now -fopenmp -pthread" \
+ -DCMAKE_C_FLAGS="%{optflags} -Wl,-z,relro -DNDEBUG -Wl,-z,now -fopenmp -pthread" \
+ -DCMAKE_VERBOSE_MAKEFILE=1 \
+ -DCMAKE_INSTALL_PREFIX=%{_prefix} ..
 make %{?_smp_mflags}
 cd ../
 
@@ -156,6 +153,9 @@ popd
 %{_libdir}/lib%{name}.so
 
 %changelog
+* Wed Dec 23 2015 Antonio Trande <sagitter@fedoraproject.org> - 5.1.0-8
+- Used always 'cmake' compiler
+
 * Thu Oct 29 2015 Antonio Trande <sagitter@fedoraproject.org> - 5.1.0-7
 - Rebuild for cmake 3.4.0
 - Hardened builds on <F23