Description: <short summary of the patch>
 TODO: Put a short summary on the line above and replace this paragraph
 with a longer explanation of this change. Complete the meta-information
 with other relevant fields (see below for details). To make it easier, the
 information below has been extracted from the changelog. Adjust it or drop
 it.
 .
 rock-master-20.01-rtt (0.20190508-1~bionic) unstable; urgency=low
 .
   * Package automatically built using 'apaka'
   * repository: github:/orocos-toolchain/rtt.git
   * branch: refs/heads/master
   * commit: baaea5022bc79f94770a962e2e16cc0cb28cde0b
   * tag:
Author: Rock Packaging Daemon (based on apaka) <rock-dev@dfki.de>

---
The information above should follow the Patch Tagging Guidelines, please
checkout http://dep.debian.net/deps/dep3/ to learn about the format. Here
are templates for supplementary fields that you might want to add:

Origin: <vendor|upstream|other>, <url of original patch>
Bug: <url in upstream bugtracker>
Bug-Debian: https://bugs.debian.org/<bugnumber>
Bug-Ubuntu: https://launchpad.net/bugs/<bugnumber>
Forwarded: <no|not-needed|url proving that it has been forwarded>
Reviewed-By: <name and email of someone who approved the patch>
Last-Update: 2020-05-07

--- rock-master-20.01-rtt-0.20190508.orig/CMakeLists.txt
+++ rock-master-20.01-rtt-0.20190508/CMakeLists.txt
@@ -1,7 +1,11 @@
 #
 # Test CMake version
 #
-CMAKE_MINIMUM_REQUIRED(VERSION 2.6.0)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.1)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
 
 # for CMake 2.6 corrected behaviour (see "cmake --help-policy CMP0003")
 IF(POLICY CMP0003)
