[Debian-med-packaging] Bug#831235: Building libhmsbeagle in pbuilder mixes up desktop environment (Was: backport of libreoffice-calc (5.1.2-3~bpo8+1) mixes up desktop environment)

[Rebecca N. Palmer]

> Are you able to reproduce this (under an up to date Jessie + backports
> system).

No - the build (of master, i.e. 2.1.2+20160525-1) fails with

/tmp/pocldFu22d/program.cl:3273:32: error: call to '_cl_ldexp' is ambiguous
             sum[pat][state] += ldexp(frexp(dRootPartials[u + delta * 
r], &expTmp), expTmp + (tmpFactor - maxScaleFactor)) * matrixProp[r];
                                ^~~~~
during the test suite, but it doesn't do anything to graphics.

> What else information might be possibly helpful?

Have you done anything to your pbuilder setup (pbuilderrc, gbp.conf) to 
make it install/use beignet?  A program in a chroot can only see the 
OpenCL ICDs installed inside the chroot, which with those 
build-dependencies defaults to pocl-opencl-icd.

Does the problem go away if you uninstall beignet-opencl-icd and reboot?

Do sid builds also trigger it?