Dear all, I've been trying to compile Blender with CUDA support. We had a working EasyConfig in our local repo (see attached), which recently broke. It now produces the error:
In file included from /scratch/shared/jenkins/regression/build/Blender/2.79b/foss-2017b-Python-3.6.3-nvidia/blender-2.79b/intern/ghost/intern/GHOST_ContextGLX.h:41:0, from /scratch/shared/jenkins/regression/build/Blender/2.79b/foss-2017b-Python-3.6.3-nvidia/blender-2.79b/intern/ghost/intern/GHOST_WindowX11.cpp:51: /scratch/shared/jenkins/regression/build/Blender/2.79b/foss-2017b-Python-3.6.3-nvidia/blender-2.79b/extern/glew/include/GL/glxew.h:1758:29: error: expected initializer before <E2><80><98>glxewInit<E2><80><99> GLEWAPI GLenum GLEWAPIENTRY glxewInit (); We found out the problem occured since we had recompiled our CUDA-9.0.176 module. It now prepends the 'extras/CUPTI/include' directory to the CPATH, since a change in the CUDA EasyBlock about a year ago or so. This path unfortunately, also includes (rather old) GL headers. The reason is probably that those are used by CUDA to compile its examples, but they mess up our installation process for Blender. A manual install, where we take out this path from the CPATH, worked. My question is: how should we solve this? 1) Don't have the CUDA module prepend extras/CUPTI/include CPATH (upside: old GL headers are not picked up anymore. Downside, the actual CUPTI headers for profiling are also not picked up so user would have to include these manually). 2) Have the CUDA EasyBlock remove (just) the old GL headers from the extras/CUPTI/include path (downside: not default CUDA installation, examples may not build. Upside: you can leave CUPTI headers in CPATH) 3) 'hack' the Blender EasyConfig (or a Blender EasyBlock) to do a tricky thing to get extras/CUPTI/include out of the CPATH, e.g. in the prebuildstep or something. Upside: CUPTI headers can remain prepended in CPATH in the CUDA module, and the CUDA examples will build 'out of the box'. Downside: feels very dirty and other software MAY run into the same, old GL headers. What's your opinion? Which option is best? Or is there another, better option? Cheers, Caspar van Leeuwen SURFsara
Blender-2.79b-foss-2017b-Python-3.6.3-CUDA-9.0.176.eb
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