+# parse /etc/os-release
+file(READ "/etc/os-release" os_release)
+string(REPLACE "\n" ";" os_release ${os_release})
+foreach(l ${os_release})
+ string(REPLACE "=" ";" l ${l})
+ list(GET l 0 _name)
+ list(GET l 1 _value)
+ string(REPLACE "\"" "" _value ${_value})
+ set(OS_${_name} ${_value})
+endforeach()
+
+if (OS_ID STREQUAL "ubuntu" AND OS_VERSION_ID VERSION_LESS 20.04)
+ set(VPP_DEB_BUILD_DEPENDS "python-all, python3-all, python3-setuptools")
+ set(VPP_DEB_WITH_PYTHON2 "yes")
+else()
+ set(VPP_DEB_BUILD_DEPENDS "python3-all, python3-setuptools")
+ set(VPP_DEB_WITH_PYTHON2 "no")
+endif()
+
+foreach(f rules changelog control)