Ubuntu 20.04 CMakeList.txt: link LZ4 via FindPkg #13
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If the dependency LZ4 was installed via
apt install liblz4-dev
orapt-get install liblz4-dev
in Ubuntu, then CMake won't be able to find LZ4 configuration since the liblz4-dev package doesn't provide any cmake configuration files. You'll need to use pkg-config instead. CMakeList.txt is changed in accord. Ubuntu 20.04 LTS has been tested and passed.