compilation error

[clzhou]

Hello!

When compiling the specified Caffe version, I got the following errors:
/tmp/mex_9704849759849136_22812/caffe_.o: In functionmx_mat_to_blob(mxArray_tag const_, caffe::Blob, WhichMemory)':
caffe.cpp:(.text+0x1674): undefined reference to mxIsGPUArray' caffe_.cpp:(.text+0x167d): undefined reference tomxInitGPU'
caffe_.cpp:(.text+0x1685): undefined reference to mxGPUCreateFromMxArray' caffe_.cpp:(.text+0x1690): undefined reference tomxGPUGetDataReadOnly'
caffe_.cpp:(.text+0x16a3): undefined reference to mxGPUGetNumberOfElements' caffe_.cpp:(.text+0x1854): undefined reference tomxIsGPUArray'
caffe_.cpp:(.text+0x1860): undefined reference to mxGPUDestroyGPUArray' /tmp/mex_9704849759849136_22812/caffe_.o: In functionblob_set_data(int, mxArray_tag**, int, mxArray_tag const**)':
caffe_.cpp:(.text+0x18f8): undefined reference to mxIsGPUArray' collect2: error: ld returned 1 exit status

Do you have any idea on how to fix them? Thanks.

[zhangliliang]

Hello,

Could you compile the official caffe branch on your computer?
And what's the environment on your computer?

[clzhou]

I just installed your caffe branch successfully on Ubuntu 14.04 + Matlab 2014a.
The compilation of matlab APIs failed on Ubuntu 16.04 + Matlab 2014b where I have compiled the official caffe successfully. I guess it may be something related to the use of mxGPUArray in the caffe_.cpp. To compile it, I have to explicitly add the following include directory to the Makefile.config: /usr/local/MATLAB/R2014b/toolbox/distcomp/gpu/extern/include.
Otherwise, the compiler cannot find gpu/mxGPUArray.h. Then, the above errors occurred.
Do you know which library should be linked against in order to use APIs like mxInitGPU?

[zhangliliang]

@clzhou

I am sorry that I have not check out this repo on Ubuntu 16.04.
And currently I have no idea for fixing this issue.

[clzhou]

Thanks anyway.