compiling tf2

[focs]

Hi,
I'm trying to compile ros on my gentoo system. I got stuck while trying to compile the tf2 package:

./src/catkin/bin/catkin_make_isolated --pkg tf2 --force-cmake

The error is:

[100%] Building CXX object CMakeFiles/tf2_py.dir/src/tf2_py.cpp.o
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:62:1: error: invalid conversion from 'const char_' to 'Py_ssize_t {aka long int}' [-fpermissive]
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: In function 'PyObject_ transform_converter(const TransformStamped_)':
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:109:103: error: 'PyString_FromString' was not declared in this scope
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: In function 'PyObject_ allFramesAsYAML(PyObject_, PyObject_)':
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:186:59: error: 'PyString_FromString' was not declared in this scope
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: In function 'PyObject* allFramesAsString(PyObject_, PyObject_)':
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:192:61: error: 'PyString_FromString' was not declared in this scope
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: In function 'PyObject* setTransform(PyObject_, PyObject_)':
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:388:105: error: 'PyString_AsString' was not declared in this scope
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: At global scope:
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:457:1: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp: In function 'void init_tf2()':
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:479:67: error: 'PyString_FromString' was not declared in this scope
/home/fox/ros_catkin_ws/src/tf2/src/tf2_py.cpp:496:43: error: 'Py_InitModule' was not declared in this scope
make[2]: *** [CMakeFiles/tf2_py.dir/src/tf2_py.cpp.o] Error 1
make[1]: *** [CMakeFiles/tf2_py.dir/all] Error 2

I think it is partially related to the python2-3 problem. I tried to force python 2 by:

./src/catkin/bin/catkin_make_isolated --pkg tf2 --force-cmake --cmake-args "-DPYTHON_LIBRARIES=/usr/lib64/libpython2.7.so -DPYTHON_INCLUDE_PATH=/usr/include/python2.7/"

So it should take the python2 library and header but there is no change on the output. Maybe this is not the correct way to spesifie the library.

Let me know if I can provide more info.

Thanks

[tfoote]

Refiled in upstream repo ros/geometry2#50