Mesa git compilation fail with Slackware's llvm 10.0.1?

I tried to rebuild mesa git with some nv50-specific patches, and ran into linking failure for libMesaOpenCL.so

I complied llvm-11 (from Slackware -current) but not yet installed it. From look at git log I tried to revert two mesa commits: Revert "clover: Support LLVM coming from CMake instead of config-tool" This reverts commit 72566fd9.

and

Revert "meson: Adjust Clover's required LLVM modules" This reverts commit 80817b6e.

Now build finishes and I can see my clinfo/clpeak numbers.

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