Trying to compile on Arch Linux with no luck...

[k8ieone]

I keep hitting an error:
/usr/bin/ld: CMakeFiles/gbeinterp.dir/gbe_bin_interpreter.cpp.o:(.data.rel+0x0): undefined reference to `llvm::DisableABIBreakingChecks'
collect2: error: ld returned 1 exit status
make[2]: *** [backend/src/CMakeFiles/gbeinterp.dir/build.make:84: backend/src/libgbeinterp.so] Error 1
make[1]: *** [CMakeFiles/Makefile2:148: backend/src/CMakeFiles/gbeinterp.dir/all] Error 2
make: *** [Makefile:152: all] Error 2

[k8ieone]

Ok, I found a patch for LLVM 8, but I keep getting segmentation faults in hashcat.

[ruiling]

new LLVM version may not work. you can either try old llvm version suggested by Beignet or try intel-compute-runtime (https://github.com/intel/compute-runtime)

[k8ieone]

Thanks, I will try to use an older version. Also thanks for recommending compute-runtime, but my product is not compatible.

[michaellass]

@satcom886 I revived the beignet-git package in the Arch User Repository. You may use that to build beignet from source. There are two things to note:

1. I decided to build with LLVM 7 instead of LLVM 9 because otherwise I get failing utests. This means however that you need to also build LLVM and Clang (llvm70 and clang70 packages in the AUR) which can take quite some time even on newer machines.
2. I included a patch for testing that solves segfaults in certain situations for me. You can enable it by uncommenting the line that applies GBE-let-GenRegister-reg-never-return-uninitialized-m.patch. This could also help you with hashcat.

With GBE-let-GenRegister-reg-never-return-uninitialized-m.patch applied and built against LLVM 7, beignet passes all utests on my IvyBridge system and hashcat -b at least works until it approaches SHA-512.

[k8ieone]

@michaellass Thanks! I will try to do that.

[k8ieone]

@michaellass OK, it compiled without any problems! And it seems Hashcat works (at least the benchmark does until it gets to hashmode 1700 (SHA2-512), I haven't tried anything else)! Since you own the AUR package now, can I ask you to remove the conflict between beignet-git and intel-opencl-runtime? intel-opencl-runtime is a CPU only implementation and it seems the ICD files are named differently, so there shouldn't be any conflict.