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

[Brecht Van Lommel]

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/
>> > _______________________________________________
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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]
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