Install libsparsehash-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libsparsehash-dev
Description:
Google's extremely memory-efficient C++ hash_map implementation
The Google SparseHash project contains several C++ template hash-map implementations in use at Google, with different performance characteristics, including an implementation that optimizes for space and one that optimizes for speed.
Homepage: http://code.google.com/p/google-sparsehash
Version: 2.0.2-1
Section: universe/libdevel