Some compilation errors and solutions for Caffe Engineering (undefined reference to Cv::imread)

Original link: http://blog.csdn.net/yhl_leo/article/details/51371936

The second case of this blog post was encountered while compiling Caffe, which can be correctly executed when corrected:

(Note that you can use make all-j16 depending on your computer)

Sort out some of the compilation errors and workarounds that have recently been encountered with the Caffe project. 1 CuDNN

CUDNN the latest version is V5, nearly two or three years of some Caffe projects, the use of different versions of the V2/V3 version of the most common, so use must be clear (of course, if the author did not say, then try it yourself).

CUDNN a version mismatch, when the project make, the following error (to install the V4 version, compile the V3 version of the program as an example)

NVCC SRC/CAFFE/LAYERS/DECONV_LAYER.CU
NVCC SRC/CAFFE/LAYERS/CUDNN_CONV_LAYER.CU
SRC/CAFFE/LAYERS/CUDNN_CONV_LAYER.CU (Bayi): Error:argument of type "cudnnaddmode_t" is
Incompatible with parameter of type "const void *"
Detected during instantiation of "void
CAFFE::CUDNNCONVOLUTIONLAYER<DTYPE>::FORWARD_GPU (const std::vector<caffe::blob<dtype> *,
Std::allocator<caffe::blob<dtype> *>> &, const std::vector<caffe::blob<dtype> *,
std::allocator<caffe::blob<dtype> *>> &) [with Dtype=float] "
(157): Here

...
Errors detected in the compilation of "/tmp/tmpxft_00002703_00000000-
16_cudnn_conv_layer.compute_50.cpp1.ii ".
Make: * * * [. build_release/cuda/src/caffe/layers/cudnn_conv_layer.o] Error 1
Make: * * * waiting for unfinished jobs ....

The solution is this, download the V3 version, unzip, in the terminal into the folder (here is still the V3 version for example)

$ CD lib64/
$ sudo cp lib*/usr/local/cuda/lib64/
$ CD. /include/
$ sudo cp cudnn.h/usr/local/cuda/include/
$ cd/usr/local/cuda/lib64/
$ sudo rm-r libcudnn.so libcudnn.so.7.0
$ sudo ln-sf libcudnn.so.7.0.64 libcudnn.so.7.0
$ sudo ln-sf libcudnn.so.7.0 libcudnn.so
$ sudo ldconfig

2 OpenCV

I use the version is 3.1.0, when compiling the project, encountered the following bug

... Cxx/ld-o. Build_release/tools/convert_imageset.bin. build_release/lib/libcaffe.so:undefined reference to Cv::imread (cv::string const&, int) '. build_release/lib/libcaffe.so:undefined reference Tocv::imencode (cv::string const &, Cv::_inputarray Const&, std::vector >&, std::vector > const&) '. build_release/lib/libcaffe.so : Undefined reference to ' Cv::imdecode (Cv::_inputarray const&, int.) ' Collect2:error:ld returned 1 exit status make: * [. build_release/tools/convert_imageset.bin] Error 1

...

First of all, I have configured the OPENCV, you can query the installation version:

$ pkg-config--modversion OpenCV

Because it's compiled, and, of course, the output is 3.1.0.

Therefore, the above error should be the Opencv_imgcodecs link problem, the more effective solution is to add OpenCV needed lib to the makefile file, find LIBRARIES (in python_libraries: = Boost _python python2.7 Previous line) and modified to:

LIBRARIES + = Glog gflags protobuf leveldb snappy \ Lmdb boost_system hdf5_hl hdf5 m \ Opencv_core opencv_hig Hgui Opencv_imgproc Opencv_imgcodecs

3 make

Each time you need to recompile, you first need to clear out the results of the previous compilation:

$make Clean

And then recompile:

$ make ALL-J12

$ make Distribute

$ make Pycaffe

$ make Matcaffe

The implication of-J12 is that run jobs in parallel, looking at the performance of their own machines, set them up faster and can compile more quickly.