While seting up a new VM on my workstation I ran in a couple of errors while trying to run hashcat. Mostly the error appears with Ryzen cpu’s, since I run a Ryzen 5900X I have to figure out what fixes the error. In short, here is the clear step by step way.
Symtoms
While running hashcat you get the following error, even with –force:
clBuildProgram(): CL_BUILD_PROGRAM_FAILURE
error: unknown target CPU 'generic'
Device #1: Kernel /usr/share/hashcat/OpenCL/shared.cl build failed.
Cause
It seems that there is a lack of LLVM 4.0 on your system.
Resolution
Install the needed CPU Runtimes for OpenCL applications. You can download the tar-archive on the Intel-page.
Navigate to your Download directory and untar the archive
tar -xvf l_opencl_p_18.1.0.015.tgz
Navigate into the folder and run the installation script
cd l_opencl_p_18.1.0.015
./install.sh
The installer will navigate you threw the process and show you what is missing in your environment.
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After the installation is finished you’ll should be able to run hashcat without any problems.
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Great !
Exactly what I needed thanks.
However, it’s a little surprising that we need an Intel software to have OpenCL to work on an AMD CPU but it works.