[BUG] "fatal error: 'flann/flann.hpp' file not found" in mac Apple Chip

[LimHyungTae]

While I make -j ${num_proc}, the error relevant to flann occurs as follows:

Solution

Step 1. First, install below libraries:

brew install gcc cmake git ninja eigen flann

Step 2. And then, export library directories as follows:

export CPLUS_INCLUDE_PATH=/opt/homebrew/include:$CPLUS_INCLUDE_PATH
export LIBRARY_PATH=/opt/homebrew/lib:$LIBRARY_PATH
export LD_LIBRARY_PATH=/opt/homebrew/lib:$LD_LIBRARY_PATH

Step 3.

Just remove everything and try to rebuild the repository.

rm -rf *
cmake ..
make -j24