QGIS Issue Tracking

2019-03-12

10:11 AM QGIS Application Bug report #21211: Build errors due to "CL_HPP_TARGET_OPENCL_VERSION is not a valid value (100, 1...

The cl.h is not relevant here. I don't understand what makes you think that.
Maybe this is what tipped you off?
...

09:19 AM QGIS Application Bug report #21211: Build errors due to "CL_HPP_TARGET_OPENCL_VERSION is not a valid value (100, 1...

Looks like you did not look at the file I attached.
CL headers seem to be included in the qgis source distribution...

2019-03-11

12:09 AM QGIS Application Bug report #21211: Build errors due to "CL_HPP_TARGET_OPENCL_VERSION is not a valid value (100, 1...

I'm on gentoo with nvidia-drivers-418.43. QGIS 3.6.0 doesn't build for me. the build log is attached.