CMake 3.5 fails if ROBOTOLOGY_USES_PYTHON option is enabled about robotology-superbuild

[traversaro]

YCM is supposed to provided a newer version of the UseSWIG.cmake file, but the relative files are not included in CMAKE_MODULE_PATH, probably because 3.8 is not present in this loop: https://github.com/robotology/ycm/blob/61d3a992c39bff30f80bc6fb46041588e517ab30/YCMConfig.cmake.in#L54 . @drdanz

[traversaro]

Added testing on this option in Travis in #23 .

[traversaro]

Interestingly, Travis is failing for a different problem ( https://travis-ci.org/robotology/robotology-superbuild/jobs/325479020 ):

[100%] Swig source
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:192: Warning 389: operator[] ignored (consider using %extend)
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:193: Warning 389: operator[] ignored (consider using %extend)
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:273: Warning 321: 'hash' conflicts with a built-in name in python
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/Portable.h:31: Error: Syntax error in input(3).
make[5]: *** [lib/python/yarpPYTHON_wrap.cxx] Error 1
make[4]: *** [bindings/CMakeFiles/_yarp_python.dir/all] Error 2
make[3]: *** [all] Error 2
make[2]: *** [robotology/YARP/CMakeFiles/YCMStamp/YARP-build] Error 2
make[1]: *** [CMakeFiles/YARP.dir/all] Error 2
make: *** [all] Error 2

[traversaro]

Interestingly I wrote the Travis to test the Python2 bindings, but YARP's Travis is testing its Python bindings with Python3 ( https://github.com/robotology/yarp/blob/992ec99d95cff898957c0ab6e2c8f7c9eb2fa0a6/.travis.yml#L85 ), but unfortunately RTF does not support Python3 (robotology/robot-testing-framework#37) : ( .

[traversaro]

The swig error should be solved by b6a24bb (unfortunately the logic to check that swig must be at least version 3 is only available in devel).

[prashanthr05]

The swig error should be solved by b6a24bb (unfortunately the logic to check that swig must be at least version 3 is only available in devel).

Is this the error related to the Swig Source ?

[100%] Swig source
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:192: Warning 389: operator[] ignored (consider using %extend)
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:193: Warning 389: operator[] ignored (consider using %extend)
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/ConstString.h:273: Warning 321: 'hash' conflicts with a built-in name in python
/home/travis/build/robotology/robotology-superbuild/robotology/YARP/src/libYARP_OS/include/yarp/os/Portable.h:31: Error: Syntax error in input(3).
make[5]: *** [lib/python/yarpPYTHON_wrap.cxx] Error 1
make[4]: *** [bindings/CMakeFiles/_yarp_python.dir/all] Error 2
make[3]: *** [all] Error 2
make[2]: *** [robotology/YARP/CMakeFiles/YCMStamp/YARP-build] Error 2
make[1]: *** [CMakeFiles/YARP.dir/all] Error 2
make: *** [all] Error 2

this one ?

[traversaro]

Yes.

[traversaro]

The original problem cannot be reproduced in Travis because the default Travis image have CMake 3.5 installed.

[traversaro]

I had the same issue.

[traversaro]

I think this is only happening on YARP devel.
cc @anqingd