Steps: Catalina + XCode 11 installrocksdbsource git clone cd rocksdb/ git checkout tags/v6.14.5 make clean make static. I believe since I had High Sierra installed prior to my upgrade, my installed programs were mostly 64-bit which is a must for the Catalina upgrade. My main reason for updating was getting Xcode 11.2.1 installed which required macOS Catalina.

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