apeforest edited a comment on issue #13881: Cmake : could not find mkl (missing MKLDNN_LIBRARY) URL: https://github.com/apache/incubator-mxnet/issues/13881#issuecomment-575816259 I encountered this issue recently if I compile using make and USE_BLAS=mkl. If I use cmake with -DUSE_MKL_IF_AVAILABLE=ON it's also not working and complains that "-- Could NOT find MKL (missing: MKL_INCLUDE_DIR MKL_RT_LIBRARY) -- Found OpenBLAS libraries: /usr/local/lib/libopenblas.so -- Found OpenBLAS include: /usr/local/include" I think the rootcause is that when I install mkl following this guide https://software.intel.com/en-us/articles/installing-intel-free-libs-and-python-apt-repo, mkl is installed by default at ```/opt/intel/compilers_and_libraries_2020.0.166/linux/mkl``` instead of ```/opt/intel/mkl```. Our Cmake is not able to find the location of mkl. If I do a soft link at /opt/intel/mkl, then it works fine. But I think we may need to fix this in our cmake rather than hiding the warning message inside cmake logs. @PatricZhao @TaoLv @leezu Any good solution for this?
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