VC4CL installation error

[aaguiar96]

Hello.

I was able to build VC4CLStdLib, VC4C and VC4CL.
I installed both VC4CLStdLib and VC4C by:

$ sudo dpkg -i /tmp/vc4cl-stdlib.deb
$ sudo dpkg -i /tmp/vc4c.deb 

But, when I install VC4CL by

$ sudo dpkg -i /tmp/vc4cl.deb

I get:

$ dependency problems prevent configuration of vc4cl:
$   vc4cl depends on opencl-c-headers; however Package opencl-c-headers is not installed.

This is strange because I've installed it by:

$ sudo apt-get install opencl-headers

Any ideas?
Thanks in advance.

[doe300]

It says requires opencl-c-headers (note the C), these this is a different package than opencl-headers. One is run-time (host-side) the other kernel-side headers.

[aaguiar96]

Thanks for the answer.
Do you know how to install it?

I've tried

sudo apt install opencl-c-headers

But without success.

[aaguiar96]

Maybe ubuntu 16.04 does not support opencl-c-headers package?

[doe300]

Debian provides them, so they should be in the repositories... If not, you can manually download them from the link I provided.

Well, Ubuntu16.04 may not provide them, Idk, maybe it is too old...

[aaguiar96]

I've installed opencl-c-headers from the link but it currupts the installation of opencl-headers. I'm really confused...

Also, clinfo returns 0 platforms.
Can you provide a full installation guide?

[doe300]

For Raspbian, the full installation guide is as follows:

1. Install vc4cl-stdlib package
2. Install dependencies clang-3.9, llvm-3.9, llvm-3.9-dev and vc4c package
3. Install dependencies opencl-c-headers, ocl-icd-opencl-dev and vc4cl package

At least that is the guide for Raspbian. For any other Debian it should be similar.

clinfo will return 0 platforms if you did not yet install the vc4cl package successfully and have no other OpenCL run-time installed.

[doe300]

Also note, for other OSes (other than Raspbian), you will need to make sure, the required kernel modules and the Raspberry Pi userland libraries are available.
See also #53 for how to port to other distributions

[aaguiar96]

Thanks for all the support.
I'll try to install Raspbian instead of Ubuntu and see how it goes.

Just to check. To install VC4C/VC4CL-StdLib/VC4CL I should do

cmake ..
sudo make install

in each build directory, right?

[doe300]

Well, you should build without root rights and only install with root rights. But otherwise yes. The order is important though, you need to install VC4CLStdLib before building VC4C!

[aaguiar96]

Installing raspbian do the trick, thank you very much!

Now, I will try to link VC4CL with ROS.
Any suggestion?

[doe300]

That depends on what ROS is?

[aaguiar96]

ROS = Robot Operating System.
My main objective is to optimize the processing time of a Visual Odometry algorithm that runs over ROS.

[aaguiar96]

Note that ROS compiles using Cmake!

[doe300]

If the ROS supports OpenCL and supports using the OpenCL ICD loader, then it should work out-of-the-box.

[aaguiar96]

I'm not sure... But I'll give it a try.

Thanks for all the support.
I think you can close the issue.