[Bf-committers] Clang errors when compiling the Cycles CUDA kernel in Blender

Mon Feb 10 23:35:43 CET 2014

Thank you Brecht.

2014-02-10 22:39 GMT+01:00 Jens Verwiebe <info at jensverwiebe.de>:

> See: Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
> Means you have an xcode that only comes with clang ( aka 5.x + )
> For CUDA kernelcompile with clang,you need CUDA 5.5 or higher !
> This is also documented by NVidia.
> You'll have no other chance if you use newest xcode which only comes with
> clang.
> Clang has no -dumspecs option.
>
> BTW:: the remaining gcc and llvm-gcc are SHIM#s for bw-compatibility and
> plain point to clang again.
>
> Jens
>
>
>
> Am 10.02.2014 um 22:33 schrieb Brecht Van Lommel <
> brechtvanlommel at pandora.be>:
>
> > I don't have a list of such tricks. This is just the way CMake works,
> > it has a number of variables that in the configuration that can be
> > changed, most of them have a description that explains what they do,
> > I'm just pointing out the one needed for this particular case.
> >
> > On Mon, Feb 10, 2014 at 10:03 PM, Piotr Arłukowicz <piotao at inf.ug.edu.pl>
> wrote:
> >> Dear Brecht,
> >>
> >> where can I find more such tricks? Are they documented somewhere? I
> mean,
> >> in relation to better utilize Cycles power in Blender.
> >>
> >> best regards
> >> Piotr
> >>
> >>
> >> 2014-02-10 21:06 GMT+01:00 Brecht Van Lommel <
> brechtvanlommel at pandora.be>:
> >>
> >>> It should possible to change the CUDA_NVCC_EXECUTABLE variable and add
> >>> "-ccbin=/usr/bin/llvm-gcc-4.2".
> >>>
> >>> On Mon, Feb 10, 2014 at 7:28 PM, Sen Haerens <sen at senhaerens.be>
> wrote:
> >>>> The kernel compilation succeeded by adding
> "-ccbin=/usr/bin/llvm-gcc-4.2"
> >>>> argument to nvcc and running manually.
> >>>> Could this be specified somewhere in cmake?
> >>>>
> >>>> It appears to be an issue in Mountain Lion (10.8.5).
> >>>>
> >>>
> https://devtalk.nvidia.com/default/topic/608127/clang-error-on-os-x-10-8-5-samples-/
> >>>>
> >>>>
> >>>>
> >>>> On Mon, Feb 10, 2014 at 6:33 PM, Sen Haerens <sen at senhaerens.be>
> wrote:
> >>>>
> >>>>> Hi,
> >>>>>
> >>>>> I'm getting the following Clang errors when trying to compile the
> Cycles
> >>>>> CUDA kernel in Blender.
> >>>>>
> >>>>> Read new prefs: /Users/sen/Library/Application
> >>>>> Support/Blender/2.69/config/userpref.blend
> >>>>> found bundled python:
> >>>>>
> >>>
> /Users/sen/Documents/Sources/blender_master/cmake/bin/blender.app/Contents/MacOS/2.69/python
> >>>>> Compiling CUDA kernel ...
> >>>>> "/Developer/NVIDIA/CUDA-5.0/bin/nvcc" -arch=sm_21 -m64 --cubin
> >>>>>
> >>>
> "/Users/sen/Documents/Sources/blender_master/cmake/bin/blender.app/Contents/MacOS/2.69/scripts/addons/cycles/kernel/
> >>>>> kernel.cu" -o "/Users/sen/Library/Application
> >>>>>
> >>>
> Support/Blender/2.69/cache/cycles_kernel_sm21_AB7D0ABB4691DC942DE6785DC3C9ADD1.cubin"
> >>>>> --ptxas-options="-v" --maxrregcount=32 --use_fast_math
> >>>>>
> >>>
> -I"/Users/sen/Documents/Sources/blender_master/cmake/bin/blender.app/Contents/MacOS/2.69/scripts/addons/cycles/kernel"
> >>>>> -DNVCC -D__KERNEL_CUDA_VERSION__=50
> >>>>> clang: error: unsupported option '-dumpspecs'
> >>>>> clang: error: no input files
> >>>>> CUDA kernel compilation failed, see console for details.
> >>>>>
> >>>>> These are my build specs:
> >>>>>
> >>>>> Blender 2.69 (sub 10)
> >>>>> build date: 2014-02-10
> >>>>> build time: 18:04:36
> >>>>> build commit date: 2014-02-10
> >>>>> build commit time: 16:45
> >>>>> build hash: d2b5f0f
> >>>>> build platform: Darwin
> >>>>> build type: Release
> >>>>> build c flags:  -Wall -Werror=declaration-after-statement
> >>>>> -Werror=implicit-function-declaration -Werror=return-type
> >>>>> -Wno-tautological-compare -Wno-unknown-pragmas -Wno-char-subscripts
> >>>>> -Wstrict-prototypes -Wmissing-prototypes -Wunused-parameter
> >>>>> -mmacosx-version-min=10.6  -msse2  -msse -pipe -funsigned-char
> >>>>> build c++ flags:  -Wall -Wno-tautological-compare
> -Wno-unknown-pragmas
> >>>>> -Wno-char-subscripts -Wno-overloaded-virtual -Wno-sign-compare
> >>>>> -Wno-invalid-offsetof  -mmacosx-version-min=10.6
> -ftemplate-depth=1024
> >>>>> -msse2  -msse -pipe -funsigned-char
> >>>>> build link flags: -fexceptions -framework CoreServices -framework
> >>>>> Foundation -framework IOKit -framework AppKit -framework Cocoa
> >>> -framework
> >>>>> Carbon -framework AudioUnit -framework AudioToolbox -framework
> CoreAudio
> >>>>> -framework QTKit -liconv
> >>>>> build system: CMake
> >>>>>
> >>>>> Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
> >>>>> Target: x86_64-apple-darwin12.5.0
> >>>>> Thread model: posix
> >>>>>
> >>>>> nvcc: NVIDIA (R) Cuda compiler driver
> >>>>> Copyright (c) 2005-2012 NVIDIA Corporation
> >>>>> Built on Fri_Sep_28_16:10:16_PDT_2012
> >>>>> Cuda compilation tools, release 5.0, V0.2.1221
> >>>>>
> >>>>> TIA
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Sen Haerens | Sleutelstraat 9 1000 Brussels Belgium
> >>>> Tel +32 (0)2 880 90 25 | Cell +32 (0)473 86 50 35
> >>>> Vcard http://vcard.senhaerens.be/
> >>>> _______________________________________________
> >>>> Bf-committers mailing list
> >>>> Bf-committers at blender.org
> >>>> http://lists.blender.org/mailman/listinfo/bf-committers
> >>> _______________________________________________
> >>> Bf-committers mailing list
> >>> Bf-committers at blender.org
> >>> http://lists.blender.org/mailman/listinfo/bf-committers
> >>>
> >>
> >>
> >>
> >> --
> >> Piotr Arłukowicz, PhD
> >> University of Gdańsk, Faculty of Mathematics, Physics and Informatics
> >> Division of Artificial Intelligence, Wit Stwosz 57, 80-952 Gdańsk, room
> 121
> >> phone: +48585232125, via jabber: piotao at jabber.gda.pl,
> >> http://piotao.inf.ug.edu.pl/
> >> Also: Polish Blender Course: http://polskikursblendera.pl/ [PL]
> >> _______________________________________________
> >> Bf-committers mailing list
> >> Bf-committers at blender.org
> >> http://lists.blender.org/mailman/listinfo/bf-committers
> > _______________________________________________
> > Bf-committers mailing list
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>
> _____________________________________
>
> Jens Verwiebe
> Allerskehre 44  -  22309 Hamburg
>
> Tel.: +49 40 68 78 50
> mobil: +49 172 400 49 07
> mailto: info at jensverwiebe.de
> web:  http://www.jensverwiebe.de
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-- 
Piotr Arłukowicz, PhD
University of Gdańsk, Faculty of Mathematics, Physics and Informatics
Division of Artificial Intelligence, Wit Stwosz 57, 80-952 Gdańsk, room 121
phone: +48585232125, via jabber: piotao at jabber.gda.pl,
http://piotao.inf.ug.edu.pl/
Also: Polish Blender Course: http://polskikursblendera.pl/ [PL]