how to link mex?

Question

Kate 2017-6-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/345441-how-to-link-mex

评论： Hannah 2017-8-29

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?

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Joss Knight 2017-6-22

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 2017-8-29