diff --git a/clean_build.sh b/clean_build.sh
index 290d570e..b58f7ef2 100755
--- a/clean_build.sh
+++ b/clean_build.sh
@@ -5,7 +5,7 @@ mkdir build || exit 1
 cd build || exit 1
 # some environments have cmake v2 as 'cmake' and v3 as 'cmake3'
 # check for cmake3 first then fallback to just cmake
-B_CMAKE=`which cmake3 2>/dev/null`
+`type cmake3 >> /dev/null` && B_CMAKE=`type cmake3 | cut -d ' ' -f 3`
 [ $? -ne 0 -o "x$B_CMAKE" = "x" ] && B_CMAKE=cmake
 # default build configuration
 B_BUILD_TYPE=${B_BUILD_TYPE:-Debug}
diff --git a/dist/rpm/barrier.spec.in b/dist/rpm/barrier.spec.in
index b175ded8..6f629602 100644
--- a/dist/rpm/barrier.spec.in
+++ b/dist/rpm/barrier.spec.in
@@ -9,10 +9,46 @@ Packager: Debauchee <todo@mail.com>
 License: GPLv2
 Release: @BARRIER_BUILD_NUMBER@@BARRIER_SNAPSHOT_INFO@%{?dist}
 
+# at least for CentOS-7 and CentOS-6
+BuildRequires: git cmake3 make gcc gcc-c++ curl-devel  openssl-devel
+BuildRequires: qt5-qtbase-devel
+BuildRequires: avahi-compat-libdns_sd-devel
+BuildREquires: libXtst-devel libXinerama-devel libICE-devel libXrandr-devel
+
+# possible issue here for cmake: on CentOS-7, cmake is cmake 2.x and barrier needs cmake 3.x
+# which is available from EPEL as cmake3, that might not be the case for other RPMS based distro
+
+# CXX14
+%if 0%{?rhel} == 6
+BuildRequires: centos-release-scl-rh devtoolset-3-gcc-c++.x86_64
+%endif
+
 %description
 Barrier allows you to share one mouse and keyboard between multiple computers.
 Work seamlessly across Windows, macOS and Linux.
 
+%prep
+# TO BE DONE need a Source tarball and not git..
+
+%build
+git clone https://github.com/debauchee/barrier/
+
+%if 0%{?rhel} == 6
+cd barrier && scl enable devtoolset-3 ./clean_build.sh 
+%endif
+
+%if 0%{?rhel} == 7
+cd barrier && ./clean_build.sh 
+%endif
+# maybe need a default if/else for non rhel target :P
+
+%install
+# no make install, so manual install
+%{__mkdir} -p %{buildroot}%{_bindir} %{buildroot}%{_datarootdir}/applications %{buildroot}%{_datarootdir}/icons/hicolor/scalable/apps
+%{__install} -t %{buildroot}%{_datarootdir}/applications res/barrier.desktop
+%{__install} -t %{buildroot}%{_datarootdir}/icons/hicolor/scalable/apps res/barrier.svg
+%{__install} -t %{buildroot}%{_bindir} barrier/build/bin/{barrier,barrierc,barriers,barrierd,syntool}
+
 %files
 %defattr(755,root,root,-)
 %{_bindir}/barrier