Bug#971510: gimp: Crashes on startup with "Option 'polly' registered more than once"

[Simon McVittie]

Control: retitle -1 gimp: Crashes on startup with "Option 'polly' registered more than once"
Control: reassign -1 libllvm7,libllvm9,libllvm10
Control: forcemerge 852746 -1
Control: affects 852746 + src:gimp

On Wed, 30 Sep 2020 at 23:21:12 +0200, david wrote:
> When I run gimp without any parameter this is the error output I get:
> 
> ------------------
> Gtk-Message: 23:20:42.534: Failed to load module "gail"
> 
> ** (gimp:1445892): WARNING **: 23:20:42.539: (../atk-adaptor/bridge.c:1018):atk_bridge_adaptor_init: runtime check failed: (root)
> : CommandLine Error: Option 'polly' registered more than once!
> LLVM ERROR: inconsistency in registered CommandLine options
> ------------------

This is a bug in either LLVM, or the interaction between OpenCL drivers,
or an OpenCL driver, depending how you look at it; it cannot be fixed
by GIMP.

Workaround: try removing pocl-opencl-icd and/or mesa-opencl-icd, whichever
one is not actively used on your hardware.

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964810#20 for
more details.

    smcv