cannot build orocos_kinematic_dynamics with Python3 and ROS #287

radhen · 2020-09-23T12:39:48Z

I am trying to build the master branch of this repository with python3.6. I am following the steps mentioned here. I am also doing git submodule init && git submodule update to get the pybind11 files. The orocos_kdl folder builds without errors but not the python_orocos_kdl folder. I am pasting just a few lines of errors here for your reference.

--------------------------------------------------------------- ERROR I GET ------------------------------------------------------------------------------------

/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp: In function ‘void init_kinfam(pybind11::module&)’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp:67:53: error: ‘Fixed’ is not a member of ‘KDL::Joint::JointType’
         joint_type.value("Fixed", Joint::JointType::Fixed);
                                                     ^~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp:75:66: error: ‘Fixed’ is not a member of ‘KDL::Joint::JointType’
               py::arg("name"), py::arg("type")=Joint::JointType::Fixed, py::arg("scale")=1, py::arg("offset")=0,
                                                                  ^~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp:78:49: error: ‘Fixed’ is not a member of ‘KDL::Joint::JointType’
               py::arg("type")=Joint::JointType::Fixed, py::arg("scale")=1, py::arg("offset")=0,
                                                 ^~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp:493:90: error: ‘INERTIAL’ is not a member of ‘KDL::ChainJntToJacDotSolver’
     chain_jnt_to_jac_dot_solver.def_readonly_static("INERTIAL", &ChainJntToJacDotSolver::INERTIAL);
                                                                                          ^~~~~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/kinfam.cpp:497:91: error: ‘setInertialRepresentation’ is not a member of ‘KDL::ChainJntToJacDotSolver’
     chain_jnt_to_jac_dot_solver.def("setInertialRepresentation", &ChainJntToJacDotSolver::setInertialRepresentation);
                                                                                           ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/PyKDL.h:27:0,
                 from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/framevel.cpp:27:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/operators.h: In instantiation of ‘struct pybind11::detail::op_impl<(pybind11::detail::op_id)25, (pybind11::detail::op_type)0, KDL::Rall1d<double>, KDL::Rall1d<double>, KDL::Rall1d<double> >’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/operators.h:59:24:   required from ‘void pybind11::detail::op_<id, ot, L, R>::execute(Class&, const Extra& ...) const [with Class = pybind11::class_<KDL::Rall1d<double> >; Extra = {}; pybind11::detail::op_id id = (pybind11::detail::op_id)25; pybind11::detail::op_type ot = (pybind11::detail::op_type)0; L = pybind11::detail::self_t; R = pybind11::detail::self_t]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:1136:9:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def(const pybind11::detail::op_<id, ot, L, R>&, const Extra& ...) [with pybind11::detail::op_id id = (pybind11::detail::op_id)25; pybind11::detail::op_type ot = (pybind11::detail::op_type)0; L = pybind11::detail::self_t; R = pybind11::detail::self_t; Extra = {}; type_ = KDL::Rall1d<double>; options = {}]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/framevel.cpp:62:40:   required from here
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/operators.h:130:67: error: no match for ‘operator==’ (operand types are ‘const KDL::Rall1d<double>’ and ‘const KDL::Rall1d<double>’)
 PYBIND11_BINARY_OPERATOR(eq,        eq,           operator==,   l == r)

--------------------------------------------------------------- ERROR I GET ------------------------------------------------------------------------------------

I believe there is some issue with the python version. I have ROS melodic installed and also python_orocos_kdl installed in ROS which uses python2. I have tried removing python_orocos_kdl from ROS and build this git package but still no luck. I am not sure if I understand the error properly. Could anyone please help me out?

The text was updated successfully, but these errors were encountered:

MatthijsBurgh · 2020-09-23T12:59:20Z

It is pretty clear, it can't find some of the member functions/variables. Please start completely over and follow the build instructions from the travis config, https://github.com/orocos/orocos_kinematics_dynamics/blob/master/.travis.yml

radhen · 2020-09-23T13:30:35Z

Thank you for the prompt reply @MatthijsBurgh. I very much appreciate your time.

I started with a fresh clone of the repo.
0. git clone https://github.com/orocos/orocos_kinematics_dynamics.git

and then executed git submodule init && git submodule update in the pybind11 folder.

I then executed these commands

CXXFLAGS="-Wall -Wextra -Wno-unused-parameter"
OROCOS_KDL_BUILD_TYPE=Release BUILD_PYKDL_PYBIND11=ON
sudo apt-get -qq update
sudo apt-get install -y libeigen3-dev libcppunit-dev python-sip-dev python3-sip-dev python-psutil python3-psutil python-future python3-future
cd orocos_kdl
mkdir build && cd build
cmake -DENABLE_TESTS:BOOL=ON -DCMAKE_BUILD_TYPE=${OROCOS_KDL_BUILD_TYPE} ./..
make
sudo make install

This build the orocos_kdl folder without any errors.
After this I execute the following commands,

cd python_orocos_kdl
mkdir build3
cd build3
export ROS_PYTHON_VERSION=3
cmake -DCMAKE_BUILD_TYPE=${OROCOS_KDL_BUILD_TYPE} -DBUILD_PYKDL_PYBIND11=${BUILD_PYKDL_PYBIND11} ./..
make

after which I get this error,

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

In file included from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/PyKDL.h:25:0,
                 from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:27:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h: In instantiation of ‘void pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:99:9:   required from ‘pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:1198:22:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def(const char*, Func&&, const Extra& ...) [with Func = double (KDL::Vector::*)() const; Extra = {pybind11::arg_v}; type_ = KDL::Vector; options = {}]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:92:61:   required from here
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:156:9: **error**: static assertion failed: The number of argument annotations does not match the number of function arguments
         static_assert(expected_num_args<Extra...>(sizeof...(Args), cast_in::has_args, cast_in::has_kwargs),
         ^~~~~~~~~~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:160:19: **error**: cannot convert ‘pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(pybind11::detail::function_call&)>’ to ‘pybind11::handle (*)(pybind11::detail::function_call&)’ in assignment
         rec->impl = [](function_call &call) -> handle {
CMakeFiles/PyKDL.dir/build.make:86: recipe for target 'CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o' failed
make[2]: *** [CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/PyKDL.dir/all' failed
make[1]: *** [CMakeFiles/PyKDL.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

Seems like something wrong with the pybind11

MatthijsBurgh · 2020-09-23T13:43:59Z

How about building the python2 version?

radhen · 2020-09-23T14:00:49Z

so i tried building the repo using sip instead of pybind11 by setting these flags,
OROCOS_KDL_BUILD_TYPE=Release BUILD_PYKDL_PYBIND11=OFF

still can't build python_orocos_kdl folder. I get this error,

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/build3/PyKDL/sip/sipPyKDLpart1.cpp: In function ‘PyObject* meth_ChainJntToJacDotSolver_setInertialRepresentation(PyObject*, PyObject*)’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/build3/PyKDL/sip/sipPyKDLpart1.cpp:281:21: error: ‘class KDL::ChainJntToJacDotSolver’ has no member named ‘setInertialRepresentation’; did you mean ‘setInternialRepresentation’?
             sipCpp->setInertialRepresentation();
                     ^~~~~~~~~~~~~~~~~~~~~~~~~
                     setInternialRepresentation
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/build3/PyKDL/sip/sipPyKDLpart1.cpp: In function ‘PyObject* varget_ChainJntToJacDotSolver_INERTIAL(void*, PyObject*, PyObject*)’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/build3/PyKDL/sip/sipPyKDLpart1.cpp:477:41: error: ‘INERTIAL’ is not a member of ‘KDL::ChainJntToJacDotSolver’
     sipVal =  ::ChainJntToJacDotSolver::INERTIAL;
                                         ^~~~~~~~
CMakeFiles/python_module_PyKDL.dir/build.make:119: recipe for target 'CMakeFiles/python_module_PyKDL.dir/PyKDL/sip/sipPyKDLpart1.cpp.o' failed
make[2]: *** [CMakeFiles/python_module_PyKDL.dir/PyKDL/sip/sipPyKDLpart1.cpp.o] Error 1
CMakeFiles/Makefile2:227: recipe for target 'CMakeFiles/python_module_PyKDL.dir/all' failed
make[1]: *** [CMakeFiles/python_module_PyKDL.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

As you suggested I also tried using python2. I set the flags
OROCOS_KDL_BUILD_TYPE=Release BUILD_PYKDL_PYBIND11=ON

and also change this command,
export ROS_PYTHON_VERSION=2

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

In file included from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/PyKDL.h:25:0,
                 from /home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:27:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h: In instantiation of ‘void pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’:
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:85:9:   required from ‘pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:1118:22:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def(const char*, Func&&, const Extra& ...) [with Func = double (KDL::Vector::*)() const; Extra = {pybind11::arg_v}; type_ = KDL::Vector; options = {}]’
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:92:61:   required from here
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:133:9: error: static assertion failed: The number of argument annotations does not match the number of function arguments
         static_assert(expected_num_args<Extra...>(sizeof...(Args), cast_in::has_args, cast_in::has_kwargs),
         ^~~~~~~~~~~~~
/home/radhen/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:137:19: error: cannot convert ‘pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(pybind11::detail::function_call&)>’ to ‘pybind11::handle (*)(pybind11::detail::function_call&)’ in assignment
         rec->impl = [](function_call &call) -> handle {
CMakeFiles/PyKDL.dir/build.make:86: recipe for target 'CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o' failed
make[2]: *** [CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/PyKDL.dir/all' failed
make[1]: *** [CMakeFiles/PyKDL.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

seems like its the same error to me.

I can install PyKDL in python2 using ROS by executing this command,
sudo apt-get install ros-melodic-python-orocos-kdl
and things work. I have been using PyKDL in python2 in the past.

My new files are in python3 env. and so I am desperate to install PyKDL in python3.

MatthijsBurgh · 2020-09-23T14:05:41Z

It seems to me that orocos_kdl isn't building correct and therefore the linking doesn't work. I have no clue what causes the problems with the cpp library.

MatthijsBurgh · 2020-09-23T15:17:13Z

orocos_kdl is a cpp library....

radhen · 2020-09-23T18:51:12Z

I tried the steps suggested (https://github.com/orocos/orocos_kinematics_dynamics/blob/master/.travis.yml) to me initially on a fresh PC. This fresh PC has python 3.6.9 and ROS melodic. I am still getting the same errors. Nothing changed. Can anyone please suggest me any steps to debug/solve this??

Below is full error again for your reference

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

In file included from /home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/PyKDL.h:25:0,
                 from /home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:27:
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h: In instantiation of ‘void pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’:
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:85:9:   required from ‘pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]’
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:1118:22:   required from ‘pybind11::class_<type_, options>& pybind11::class_<type_, options>::def(const char*, Func&&, const Extra& ...) [with Func = double (KDL::Vector::*)() const; Extra = {pybind11::arg_v}; type_ = KDL::Vector; options = {}]’
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/PyKDL/pybind11/frames.cpp:92:61:   required from here
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:133:9: **error**: **static assertion failed: The number of argument annotations does not match the number of function arguments
         static_assert(expected_num_args<Extra...>(sizeof...(Args), cast_in::has_args, cast_in::has_kwargs),**
         ^~~~~~~~~~~~~
/home/gelsight/Documents/orocos_kinematics_dynamics/python_orocos_kdl/pybind11/include/pybind11/pybind11.h:137:19: error: cannot convert ‘pybind11::cpp_function::initialize(Func&&, Return (*)(Args ...), const Extra& ...) [with Func = pybind11::cpp_function::cpp_function(Return (Class::*)(Arg ...) const, const Extra& ...) [with Return = double; Class = KDL::Vector; Arg = {}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(const KDL::Vector*)>; Return = double; Args = {const KDL::Vector*}; Extra = {pybind11::name, pybind11::is_method, pybind11::sibling, pybind11::arg_v}]::<lambda(pybind11::detail::function_call&)>’ to ‘pybind11::handle (*)(pybind11::detail::function_call&)’ in assignment
         rec->impl = [](function_call &call) -> handle {
CMakeFiles/PyKDL.dir/build.make:86: recipe for target 'CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o' failed
make[2]: *** [CMakeFiles/PyKDL.dir/PyKDL/pybind11/frames.cpp.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/PyKDL.dir/all' failed
make[1]: *** [CMakeFiles/PyKDL.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

------------------------------------------------------------- ERROR I GET (complete) -----------------------------------------------------------------------

meyerj · 2020-09-24T09:28:40Z

I did not look at it in detail not test it myself, but the problem could be that you are mixing different versions of KDL. You cannot build and install orocos_kdl from source if you also have another version installed from debians in /opt/ros or even from a system package in /usr. Likely they will conflict, and python_orocos_kdl finds the library and headers of the ROS version at /opt/ros instead of the one you installed to /usr/local. It may be an option to uninstall ros-melodic-orocos-kdl completely, but then you also have to build all other ROS packages that depend on it from source.

And that is the root cause of the problem then: The latest version of KDL that is released into ROS, 1.4.0, is not API-compatible to the version of python_orocos_kdl in the master branch, and the version in 1.4.0 does not support Python 3 yet. So in short: It is not possible to build python_orocos_kdl for Python 3 in a ROS environment at the moment without hassles.

Possible solutions:

Make python_orocos_kdl in master compatible to the latest released version 1.4, using cmake magic and/or preprocessor conditionals or whatever is the best way to do this with sip and/or pybind11. Probably that would be hard to maintain if all future updates of python_orocos_kdl must be backwards-compatible to one or more released versions of orocos_kdl, and not only to the version in the exact same commit...
Backport the new python_orocos_kdl package and eventually other newer patches to an ABI-compatible 1.4 release branch (i.e. release-1.4) and draft a new release of 1.4.1. Then you could use that branch to build python_orocos_kdl from source for Python 3, against the released version 1.4.0 or 1.4.1 of orocos_kdl.
Build orocos_kdl as a static library with position-independent code, and then make sure to link the static archive into the Python module built as a shared library in python_orocos_kdl (i.e. by not installing orocos_kdl to a default location and not sourcing a ROS workspace before building), such that it does not link to liborocos_kdl.so provided elsewhere or find other installed headers anymore. Not sure whether the current CMake scripts would support that approach out-of-the-box, by setting the respective CMake options.

@MatthijsBurgh @smits Any other thoughts on this? Would 1. be feasible? Or does someone have time to work towards a new backwards-compatible 1.4 release? That would probably be the best and least error-prone solution.

MatthijsBurgh · 2020-09-24T18:47:15Z

I think it a good thing to create a new release 1.5 for noetic etc.

I don't think we should provide backward compatibility. So an 1.4.1 release sound like an option. I don't have the knowledge about what is ABI compatible and what not. Also I don't have the time to do this by myself, if I had that knowledge.

If we go for that option you or @smits would need to determine what is ABI compatible and then we could split the tasks.

radhen · 2020-09-24T23:24:01Z

Thank you @MatthijsBurgh and @meyerj for your comments. I am certain there are many other people like me who would appreciate using KDL in python. Appreciate all your efforts! For now I am going to just use KDL in cpp. If I manage to make pykdl work then i'll post my procedure here.

MatthijsBurgh · 2020-12-12T15:27:38Z

@radhen we added that PyKDL only works with the exact version of orocos_kdl Could you test with the current master branch?

MatthijsBurgh · 2021-01-22T10:56:14Z

Should be fixed by #297; Stale issue

radhen changed the title ~~cannot compile and build orocos_kinematic_dynamics. PLEASE HELP!~~ cannot build orocos_kinematic_dynamics Sep 23, 2020

meyerj mentioned this issue Sep 24, 2020

MacOS 10.15 Foxy python bindings build error #279

Closed

This was referenced Sep 30, 2020

Problem with first example: No module named sip SoMa-Project/ec_grasp_planner#62

Open

cannot import tf_conversions in Python ros/geometry#215

Open

radhen changed the title ~~cannot build orocos_kinematic_dynamics~~ cannot build orocos_kinematic_dynamics with Python3 and ROS Oct 22, 2020

MatthijsBurgh closed this as completed Jan 22, 2021

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cannot build orocos_kinematic_dynamics with Python3 and ROS #287

cannot build orocos_kinematic_dynamics with Python3 and ROS #287

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cannot build orocos_kinematic_dynamics with Python3 and ROS #287

cannot build orocos_kinematic_dynamics with Python3 and ROS #287

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radhen commented Sep 23, 2020 • edited

MatthijsBurgh commented Sep 23, 2020

radhen commented Sep 23, 2020 • edited

MatthijsBurgh commented Sep 23, 2020

radhen commented Sep 23, 2020 • edited by MatthijsBurgh

MatthijsBurgh commented Sep 23, 2020

MatthijsBurgh commented Sep 23, 2020

radhen commented Sep 23, 2020 • edited by MatthijsBurgh

meyerj commented Sep 24, 2020

Possible solutions:

MatthijsBurgh commented Sep 24, 2020

radhen commented Sep 24, 2020 • edited

MatthijsBurgh commented Dec 12, 2020

MatthijsBurgh commented Jan 22, 2021

radhen commented Sep 23, 2020 •

edited

radhen commented Sep 23, 2020 •

edited

radhen commented Sep 23, 2020 •

edited by MatthijsBurgh

radhen commented Sep 23, 2020 •

edited by MatthijsBurgh

radhen commented Sep 24, 2020 •

edited