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how to link mex?

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Kate
Kate on 20 Jun 2017
Commented: Hannah on 29 Aug 2017
hi,
my code is:
function build_cropRectanglesMex( cudaRoot )
%build_cropRectanglesMex builds package cropRectanglesMex
%
% INPUT:
% cudaRoot - path to the CUDA installation
% Anton Osokin, firstname.lastname@gmail.com, May 2015
if ~exist('cudaRoot', 'var')
cudaRoot = 'C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\' ;
end
nvccPath = fullfile(cudaRoot, 'bin', 'nvcc.exe')
if ~exist(nvccPath, 'file')
error('NVCC compiler was not found!');
end
root = fileparts( mfilename('fullpath') );
% compiling
compileCmd = [ '"', nvccPath, '"', ...
' -c ', fullfile(root,'cropRectanglesMex.cu'), ...
' -I"', fullfile( matlabroot, 'extern', 'include'), '"', ...
' -I"', fullfile( matlabroot, 'toolbox', 'distcomp', 'gpu', 'extern', 'include'), '"', ...
' -I"', fullfile( cudaRoot, 'include'), '"', ...
' -DNDEBUG -DENABLE_GPU', ...
' -Xcompiler', ' -fPIC', ...
' -o "', fullfile(root,'cropRectanglesMex.o'), '"'];
system( compileCmd );build_cropRectanglesMex
% linking
mopts = {'-outdir', root, ...
'-output', 'cropRectanglesMex', ...
['-L', fullfile(cudaRoot, 'lib','x64')], ...
'cudart.lib', '-nppi', '-nppc', 'mwgpu', ...
'-largeArrayDims', ...
fullfile(root,'cropRectanglesMex.o') };
mex(mopts{:}) ;
delete( fullfile(root,'cropRectanglesMex.o') );
I get this error:
Error using mex
Unknown file extension ''.
Error in build_cropRectanglesMex (line 37)
mex(mopts{:}) ;
I believe the code is for linking in Linux. How can I do an equivalent linking for Windows?
  5 Comments
Joss Knight
Joss Knight on 22 Jun 2017
Using mexcuda you don't need to try to link mwgpu because that is done for you. And libraries are linked using the -l option; so you need -lnppi not -nppi.
Hannah
Hannah on 29 Aug 2017
Kate, did you ever figure out the LNK2019 error when compiling with mexcuda? I am having the same issue.

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Answers (1)

li zhaoliang
li zhaoliang on 18 Jul 2017

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