Add support for Gazebo 6 #190
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traversaro
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Jul 16, 2020
GAZEBO_CXX_FLAGS was added to CMAKE_CXX_FLAGS in #190 to support compilation against Gazebo 6 that required C++11, and unfortunately since then Gazebo did not switch to a modern way of specifying C++ standard requirement in consuming libraries. Now that YARP requires C++14, passing GAZEBO_CXX_FLAGS (that contains -std=c++11) basically bypass the CMake logic to compute the correct C++ standard with which to compile the plugins, and forces to compile them with C++11. As the only reason for which GAZEBO_CXX_FLAGS was added to CMAKE_CXX_FLAGS was to enable C++11 support, and as that is already passed as a requirement by YARP, I think we can just remove it. Related SDFormat PR: gazebosim/sdformat#251 .
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This will compile gazebo-yarp-plugins as C++11 code if you are using Gazebo 6, this is mysteriously working on Ubuntu 14.04 even if YARP is compiled as C++98... but I guess it will cause a lot of problems. Merging because it is not changing anything in Gazebo <= 5 .