Error:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/strings.h:85:17: error: expected initializer before '__OSX_AVAILABLE_STARTING'
int ffsl(long) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
Full Error:
https://github.com/dmlc/xgboost/issues/4933
This is not working after update to Catalina. Before that it was okey.