compiling problem

[xuhuairuogu]

Problem Description
My OS is Ubuntu18.04.
First, I installed PInocchio successfully following the instructions on this website https://stack-of-tasks.github.io/pinocchio/download.html :

1. Add robotpkg apt repository
2. Install Pinocchio
   sudo apt install robotpkg-py27-pinocchio
3. Configure environment variables(add the following to the file ~/.bashrc and source it)
   export PATH=/opt/openrobots/bin:$PATH
   export PKG_CONFIG_PATH=/opt/openrobots/lib/pkgconfig:$PKG_CONFIG_PATH
   export LD_LIBRARY_PATH=/opt/openrobots/lib:$LD_LIBRARY_PATH
   export PYTHONPATH=/opt/openrobots/lib/python2.7/site-packages:$PYTHONPATH
   Then, I started installing tsid following the instructions on this website and failed when executing cmake:
   
   I am really confused.

[olivier-stasse]

Dear @xuhuairuogu
Several solutions are possible
1/ You want to continue with sources:
I would suggest to try:

export PKG_CONFIG_PATH=/opt/openrobots/lib/pkgconfig/:$PKG_CONFIG_PATH

Note that there is '/' just after pkgconfig
You can put the following script here. Thiis the same page that you followed but I updated it.

2/ You might try to use the binaries:

apt-get install robotpkg-tsid
apt-get install robotpkg-py27-tsid

Note that there is currently a problem with the python bindings, and I will push a PR to fix this problem this week-end.

[xuhuairuogu]

Thanks for your reply. Now I have successfully compiled and installed pinocchio, OpenSceneGraph3.4, PythonQt, gepetto-viewer, gepetto-viewer-corba and tsid all from source. However, when I execute examples related to Gepetto GUI, for example exercizes/ex_1.py, 3D models cannot be displayed. It seems that everything except for model displaying works well.

[jcarpent]

Hi @xuhuairuogu,

It seems that you did not install the osg-dae pluging necessary to load your meshes (because they are collada files).
You can do that using the following command:
sudo apt-get install robotpkg-osg-dae
See stack-of-tasks/pinocchio#705 for additional details.

Best,

Justin

[xuhuairuogu]

HI, on Ubuntu18.04, there is not robotpkg-osg-dae. Therefore, I install collada using the following command:
sudo apt-get install libcollada-dom2.4-dp-dev
and recompile OpenSceneGraph3.4 and osgdb_dea.so is generated.
However, when executing python ex_1.py, a new error appears:

[xuhuairuogu]

I have converted all dae files to stl files by Blender and changed the 3D model file path in romeo.urdf. Although it is not an elegant way, it really works.