debian and rhel: Add libunwind dev package.

The patch add libunwind dev package to debian and rhel.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Yi-Hung Wei <yihung.wei@gmail.com>

debian/control

@@ -17,7 +17,8 @@ Build-Depends: graphviz,
                python3-twisted-conch,
                python3-zopeinterface,
                python3-six,
-               libunbound-dev
+               libunbound-dev,
+               libunwind-dev
 Standards-Version: 3.9.3
 Homepage: http://openvswitch.org/
 

rhel/openvswitch.spec.in

@@ -39,6 +39,7 @@ BuildRequires: checkpolicy, selinux-policy-devel
 BuildRequires: autoconf, automake, libtool
 BuildRequires: python3-sphinx
 BuildRequires: unbound-devel
+BuildRequires: unwind-devel
 
 %bcond_without check
 %bcond_with check_datapath_kernel