I was able to reproduce the bug when I tried again. I must have made an
error in my previous attempt.
The underlying problem seems to date back to the introduction of
opencl-c-base.h in LLVM 9. The PCH loading for comgr was written at a
time when opencl-c.h was a stand-alone file and it seems that it never
got updated when that changed.
This can be fixed by adding a Depends on libclang-common-21-dev to
provide opencl-c-base.h, though I wonder if the better thing to do would
be to bundle opencl-c-base.h into the PCH. The status quo of half PCH
and half regular includes seems like the worst of both worlds.
I'll probably just add a Depends on libclang-common-21-dev for now and
raise the matter upstream.
Sincerely,
Cory Bloor
