diff --git a/metis.spec b/metis.spec
index c9a8afd..4a9dbcf 100644
--- a/metis.spec
+++ b/metis.spec
@@ -1,6 +1,10 @@
+%if 0%{?fedora} <= 22
+%global _hardened_build 1
+%endif
+
 Name:    metis
 Version: 5.1.0
-Release: 6%{?dist}
+Release: 7%{?dist}
 Summary: Serial Graph Partitioning and Fill-reducing Matrix Ordering
 License: ASL 2.0 and BSD and LGPLv2+
 Group:   Development/Libraries
@@ -35,7 +39,6 @@ BuildRequires: openmpi-devel
 BuildRequires: pcre-devel
 BuildRequires: help2man
 
-
 %description
 METIS is a set of serial programs for partitioning graphs, 
 partitioning finite element meshes, and producing fill reducing 
@@ -59,10 +62,8 @@ Header and library files of Metis.
 if [ %{__isa_bits} = "64" ]; then
 %patch2 -p0
 fi
-
 %patch4 -p0
 
-
 %build
 
 # Build metis
@@ -79,13 +80,13 @@ cd build
         -DSHARED=1 \
         -DOPENMP=%{_includedir}/openmpi-%{_arch} \
         -DPCRE=%{_includedir} \
-        -DCMAKE_CXX_FLAGS="%{optflags} -fopenmp -pthread" -DCMAKE_C_FLAGS="%{optflags} -fopenmp -pthread" \
+        -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} ..
 make %{?_smp_mflags}
 cd ../
 
-
 %check
 cp -p %{buildroot}%{_bindir}/* graphs
 pushd graphs
@@ -107,7 +108,6 @@ help2man --version-option="%{version}" -n "Partitions a graph into a specified n
  -N --output="gpmetis.1" -h -help %{buildroot}%{_bindir}/gpmetis
 
 ## Can't get manpage from ndmetis. Use 'ndmetis -h' command 
-
 LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
 help2man --version-option="%{version}" -n "Partitions a mesh into a specified number of parts." \
  -N --output="mpmetis.1" -h -help %{buildroot}%{_bindir}/mpmetis
@@ -117,7 +117,6 @@ help2man --version-option="%{version}" -n "Converts a mesh into a graph that is
  -N --output="m2gmetis.1" -h -help %{buildroot}%{_bindir}/m2gmetis
 
 %else
-
 LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
 help2man --version-string="%{version}" -n "Partitions a graph into a specified number of parts." \
  -N --output="gpmetis.1" --no-discard-stderr --help-option="-help" %{buildroot}%{_bindir}/gpmetis
@@ -134,24 +133,19 @@ help2man --version-string="%{version}" -n "Partitions a mesh into a specified nu
 LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
 help2man --version-string="%{version}" -n "Converts a mesh into a graph that is compatible with METIS." \
  -N --output="m2gmetis.1" --no-discard-stderr -h "-help" %{buildroot}%{_bindir}/m2gmetis
-
 %endif
 
 mkdir -p %{buildroot}%{_mandir}/man1
 mv *.1 %{buildroot}%{_mandir}/man1
 popd
 
-
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
 %files
+%{!?_licensedir:%global license %doc}
 %doc Changelog manual/manual.pdf
-%if 0%{?fedora}
 %license LICENSE.txt
-%else
-%doc LICENSE.txt
-%endif
 %{_bindir}/*
 %{_mandir}/man1/*.1.gz
 %{_libdir}/lib%{name}.so.*
@@ -162,6 +156,10 @@ popd
 %{_libdir}/lib%{name}.so
 
 %changelog
+* Thu Oct 29 2015 Antonio Trande <sagitter@fedoraproject.org> - 5.1.0-7
+- Rebuild for cmake 3.4.0
+- Hardened builds on <F23
+
 * Wed Jun 17 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 5.1.0-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild