When using more than one installed OpenCL ICD, in my case ll /usr/local/etc/OpenCL/vendors/ 321232 -rw-r--r-- 1 root wheel - 33B 24 Nov. 14:24 intel-beignet.icd 321144 -rw-r--r-- 1 root wheel - 19B 10 Nov. 15:05 mesa.icd 321060 -rw-r--r-- 1 root wheel - 31B 24 Nov. 12:02 pocl.icd a OpenCL client like clinfo (devel/clinfo) reports an error: clinfo : CommandLine Error: Option 'enable-value-profiling' registered more than once! LLVM ERROR: inconsistency in registered CommandLine options This error occurs also with any software compiled with lang/pocl. Searching the net for this specific error reveals problems going back to January of 2017, i.e. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852746
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*** This bug has been marked as a duplicate of bug 223879 ***