ProjectChrono Compilation Error with Irrlicht Module version 1.8.5

[Freya the Goddess]

Dear all,

I want to build Project Chrono, I git clone it and use ccmake with configuration only using Irrlicht module.

When it is almost finished, it prompts an error:

libChronoEngine_irrlicht.so undefined reference to 'createDeviceEx'
'irr::core::IdentityMatrix'
'irr::video::IdentityMaterial'

Anyone knows how to fix this issue?

Thank You

[JASON Z]

Hi,

Could you please try  Irrlicht 1.8.4 instead of Irrlicht 1.8.5. 1.8.4 version has been widely tested.

Anyone feel free to add any comments.

Thanks,

Jason

[JASON Z]

The link on the text might be wrong, see here: https://irrlicht.sourceforge.io/?p=1575

[Radu Serban]

The issue is not Irrlicht 1.8.5.  That should work fine.

The problem is that you are not passing a *library* for IRRLICHT_LIBRARY (but rather a directory) in your CMake configuration.

Note also that you may want to build the code in Release mode.

 

--Radu

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[Freya the Goddess]

I try to compile again with the right path to library,
irrlicht-1.8.5/lib/Linux and then use Release as the build mode. Will
tell you the result

Le jeu. 19 mai 2022 à 22:06, 'Radu Serban' via ProjectChrono
<projec...@googlegroups.com> a écrit :

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[Freya the Goddess]

It still prompts the same error when compiling demo_FEA_basic

I will try irrlicht-1.8.4 then

Le ven. 20 mai 2022 à 04:30, Freya the Goddess
<zaqhie...@gmail.com> a écrit :

[Freya the Goddess]

Can I ask for libIrrlicht.a or libIrrlicht.so that perhaps one of you
have? Because I cannot compile Irrlicht-1.8.4, I am not using Ubuntu
or general/generic Linux Distro I am using LFS OS named GFreya so I
compile without package manager, I do package installation manually.

Le ven. 20 mai 2022 à 05:54, Freya the Goddess

[Radu Serban]

I'm not sure how you configure and build Chrono...
demo_FEA_basic does *not* use Irrlicht, so it cannot be "the same error".
--Radu

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[Freya the Goddess]

Hi Radu, thanks for your reply, the error is basically stop at 80%
compiling when building or linking the demo_FEA_basic, is there any
required package to build this demo_FEA_basic?

I think I just need to ask the steps to make Project Chrono built
right from any of you using Linux. Since my OS is GNU/Linux but my own
flavor.

Usually ccmake .. is nice after I type:
mkdir build && cd build

But for manually typed CMAKE, If anyone can help me if this commands
are prepared to build Chrono or not:
mkdir build && cd build &&
cmake -DCMAKE_BUILD_TYPE=Release
-DCMAKE_INSTALL_PREFIX=/opt/hamzstlib/Physics
-DCMAKE_BUILD_DEMOS=ON
-DCMAKE_ENABLE_MODULE_IRRLICHT=ON
-DCMAKE_ENABLE_OPENMP=ON
-DUSE_BULLET_OPENMP=ON
-DUSE_EIGEN_OPENMP=ON
-DUSE_SIMD=ON -DIRRLICHT_LIBRARY=/opt/hamzstlib/Physics/irrlicht-1.8.5/lib/Linux
-DIRRLICHT_ROOT=/opt/hamzstlib/Physics/irrlicht-1.8.5/
-DEIGEN_DIR=/opt/hamzstlib/share/eigen3/cmake .. && make

Le ven. 20 mai 2022 à 13:14, 'Radu Serban' via ProjectChrono

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[Radu Serban]

For demo_FEA_basic, you do not need any additional packages and do not need to enable any optional Chrono modules. Of course, you still need to specify the path to the Eigen headers.

But first things first. What version of Chrono are you using? I recall you saying that you cloned the repository. Please make sure you are on the *develop* branch.

Ideally, you would use cmake-gui or ccmake which will guide you better through satisfying all requirements. Do you not have access to one of those in your distribution?

The cmake command line you posted below has several issues:
- there are no Chrono cmake variables named "CMAKE_ENABLE_MODULE_***"
- we expect to set the variable EIGEN3_INCLUDE_DIR
- IRRLICHT_LIBRARY should be set to the Irrlicht library *file* (not a directory)

I suggest you try a minimal build, adjusting appropriately the following command which works fine on my machine:

cmake -DCMAKE_BUILD_TYPE=Release -DEIGEN3_INCLUDE_DIR=/home/radu/Packages/eigen-3.4.0 -DENABLE_MODULE_IRRLICHT=ON -DIRRLICHT_ROOT=/usr/include/irrlicht -DIRRLICHT_LIBRARY=/usr/lib/x86_64-linux-gnu/libIrrlicht.so ~/Repositories/chrono

(Several of the options you set explicitly default to those values anyway)

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[Freya the Goddess]

1. I use the develop branch. Is it better to use version 7.0 to clone the git?

2. cmake-gui or ccmake works fine here, but I just trying using typing
manually CMAKE

3. I need to fix some of the manual typed CMAKE commands. If it
complicates things more I go back to ccmake, I just want to make /
build Project Chrono well. Irrlicht version 1.8.5 has been tested and
works, but Irrlicht-1.8.4 can't produce the library (.a or .so /
static or shared), maybe that's why it has been fixed and works on
version 1.8.5 by the developers.

I will rebuild again with your advice, thanks Radu.

Le ven. 20 mai 2022 à 16:16, 'Radu Serban' via ProjectChrono

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[Freya the Goddess]

Hi all,

good day to you, I want to share the failed building / compiling with BUILD_DEMOS=ON

1. I am using Irrlicht-1.8.5 because I cannot compile Irrlicht-1.8.4 on my Linux OS system, I am able to test the Irrlicht demo on their website, all work nicely.
2. If I build Project Chrono with BUILD_DEMOS=OFF the compilation will be finished.

My question is based on my screenshot there must be some problem either in libraries linking or my ccmake options?

 Look at 42% compiling there are warning:
undefined reference to 'createDeviceEx'
undefined reference to 'irr::core::IdentityMatrix'

undefined reference to 'irr::video::IdentityMaterial'

Is the problem located on libChronoEngine_irrlicht.so ?

Then the compilation stop / failed when building libChronoEngine_vehicle.so

Is the problem on my system or there are some preconfiguration needed or maybe to set environment variables for irrlicht ?

Thank You

[Radu Serban]

Please stick with a single email thread.  I believe all problems you are having stem from the same place which I mentioned at least twice now.

 

IRRLICHT_LIBRARY should be set to the Irrlicht library file (NOT a directory)!

 

You are passing something like:

-DIRRLICHT_LIBRARY=/opt/hamzstlib/Physics/irrlicht-1.8.5/lib/Linux

 

In the example cmake command line I gave you (which works just fine on my machine) I set:

-DIRRLICHT_LIBRARY=/usr/lib/x86_64-linux-gnu/libIrrlicht.so

 

Please locate the library file libIrrlicht.so on your machine and set IRRLICHT_LIBRARY to be that.

 

 

You are misinterpreting the output from make. 

1. The library libChronoEngine_vehicle.so was built just fine.  Look in the lib/ directory and you should see it there.  The make command stops due to earlier errors (from trying to build Chrono Irrlicht demos because you did not set the Irrlicht library correctly).
2. The problem is not really in libChronoEngine_irrlicht.so.  In fact, the library libChronoEngine_irrlicht.so is probably created and you can see it in lib/ as well.  
   The problem is that the Irrlicht library libIrrlicht.so is not known.  Note that these are shared libraries.  As such, errors will occur only when you try to link an executable that uses them.

 

 

Please get the above working first.  Once you fix the issue above by providing the correct full path to the Irrlicht library file libIrrlicht.so in the cmake variable IRRLICHT_LIBRARY, you should be able to build Chrono with BUILD_DEMOS enabled.  You will get the demo executables in the directory bin/ and can run them from within that directory. 

If you want to play around with the demos, you can modify their source code and then run again make at the same top-level as the first time.  You should NOT try to run make in a demo subdirectory.

 

The demo programs distributed with Chrono are just that: demos. 

1. Their full source code is provided with the distribution, so I’m not quite sure why you would expect us to post the source for all of them on the documentation website.  We chose to do so for a few of them (and in fact may decide to remove that from the website): indeed, that is NOT the place to get the code for a particular demo; you have that source code in the Chrono repository which you have cloned.
2. As I also mentioned a couple of times before, if you really want to experiment further with a particular demo or else want to write your own program based on the Chrono libraries, you should set up a separate project and configure that following the instructions at https://api.projectchrono.org/tutorial_install_project.html

 

--Radu

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[Freya the Goddess]

Hi Radu,

thanks for your reply, don't get me wrong or angry, I am learning and I want to point to library but I think it is enough to point at the location of library instead of the library itself

I think this are the same

../lib/Linux

../lib/Linux/libIrrlicht-1.8.5

I do it again with :

CMAKE_BUILD_TYPE=Release
CMAKE_INSTALL_PREFIX=/opt/hamzstlib
IRRLICHT_LIBRARY=/opt/hamzstlib/Physics/irrlicht-1.8.5/lib/Linux/libIrrlicht.so.1.8.5
IRRLICHT_ROOT=/opt/hamzstlib/Physics/irrlicht-1.8.5/
BUILD_DEMOS=ON
ENABLE_MODULE_IRRLICHT=ON
ENABLE_MODULE_MODAL=ON
ENABLE_MODULE_OPENGL=ON
ENABLE_MODULE_POSTPROCESS=ON
ENABLE_MODULE_SYNCHRONO=ON
ENABLE_MODULE_VEHICLE=ON
ENABLE_OPENMP=ON
Eigen3_DIR=/opt/hamzstlib/share/eigen3/cmake
USE_BULLET_OPENMP=ON
USE_EIGEN_OPENMP=ON
USE_SIMD=ON

The compilation still error at 92%, is it because I do not have Thrust package/library? But I am able to build the vehicle demo.

About the source code I can locate them in the git clone, I just think it will be on the website as well, just asking, I want to learn to modify the terrain and vehicle or robot. Project Chrono is great. I am not an English native speaker, so sorry if I create a lot of misunderstanding here.

FYI for all:

Irrlicht-1.8.5 works with Project Chrono no need for Irrlicht-1.8.4

I now want to test other modules and modify the source.

Thank You.

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[Radu Serban]

Hi Freya(???),

 

I take it you were able to get past the Irrlicht issue (by specifying the actual library file /opt/hamzstlib/Physics/irrlicht-1.8.5/lib/Linux/libIrrlicht.so.1.8.5).

 

You do not say what new compilation error you get now (by the way, telling us the percentage where compilation errors out is not very useful; please provide the exact file that fails to compile and the corresponding compiler error). 

 

I doubt this is because you do not have Thrust, but it is likely due to a missing dependency. For example, you enable the “Modal” module, but do not provide the path to the Spectra include headers (see https://api.projectchrono.org/module_modal_installation.html).

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[Freya the Goddess]

Hi all,

I would like to ask how to create ASAMOpenCRG working for Project Chrono building.

 OpenCRGv1-2.zip

I use this file (attached) officially from ASAM. Another one I haven't try is https://github.com/hlrs-vis/opencrg

Which one is the right one? I think it needs shared library or am I missing something?

Thank You

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[Radu Serban]

I don’t think anyone has tested the latest 1.2.0 release that is now maintained by ASAM.

You should get version 1.1.2 (latest release maintained by VIRES). You can get that from https://www.asam.net/standards/detail/opencrg/ (see bottom of page).

 

To use with Chrono::Vehicle you will need to compile and install OpenCRG yourself and make sure the resulting libraries are accessible, as appropriate for your operating system.  See instructions provided in the OpenCRG package.

 

On a different note, you are making again a similar mistake as before: you pass a directory to a CMake variable (OPENCRG_LIBRARY) which expects a library file.

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[Freya the Goddess]

Yes, my mistake, I have passed it to the library file and it worked but the compiling is not finished yet, It is

crgCheck

crgLoader

What should I do?

Thank You

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[Freya the Goddess]

I am trying to build Chrono after building a shared lib from OpenCRG 1.1.2 will tell you all if the compilation works or not.

Thanks

[Radu Serban]

You likely have an issue in the OpenCRG library you built.
Note that the makefile they provide may need to be slightly adjusted.  For example, I had to remove the flag “-ansi” (else GCC errors because of C++ style comments) and I had to make sure to generate position independent code (add the flag “-fPIC”).  If I were to guess, the latter is the reason for the issues you are seeing.

Note also that you do not need to build OpenCRG as a shared library.  A static library will also work (but you do need -fPIC anyway).

Hi all,

 

 OpenCRGv1-2.zipError! Filename not specified.

 

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