egolearner/faiss_install_notes_on_catalina.md

## faiss_install_notes_on_catalina.md

      
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              faiss_install_notes_on_catalina.md
            
          
    Those instructions are working for me as of Nov. 2020.
Using Homebrew and maOS 10.15.7
Install xCode command line tools (if you don't have it already)

xcode-select --install
Install LLVM

brew install llvm
Make sure /usr/local/opt/llvm/bin is in your PATH
Install Openblas

brew install openblas
Install swig

brew install swig
Clone FAISS

git clone https://github.com/facebookresearch/faiss.git
Make

CXX=/usr/local/opt/llvm/bin/clang++ CXXFLAGS="-fPIC -m64 -Wall -g -O3 -msse4 -mpopcnt -fopenmp -Wno-sign-compare -I/usr/local/opt/llvm/include -std=c++11 -I/usr/local/opt/openblas/include" LDFLAGS="-g -fPIC -fopenmp -L/usr/local/opt/llvm/lib -Wl,-rpath,/usr/local/opt/llvm/lib -L/usr/local/opt/openblas/lib" cmake -DFAISS_ENABLE_GPU=OFF -DOpenMP_CXX_LIB_NAMES=libomp -DOpenMP_libomp_LIBRARY=omp -DOpenMP_CXX_FLAGS="-fopenmp=libomp" -B build .
make -C build -j32
# build python
cd build/faiss/python && python setup.py install
Test

make -C build test
Test Python Interface

Run:
python -c "import faiss, numpy
faiss.Kmeans(10, 20).train(numpy.random.rand(1000, 10).astype('float32'))"
Note: you have to unzip faiss egg file, create folder the same as egg name, move zip contents to the egg dir. See this