aliBuild O2 fails at compiling XRootD

Dear experts,

again on building AliceO2 dev on MacOS Catalina after updating alidist and O2. The build fails on XRootD, with a veeery long log: https://www.dropbox.com/s/4e37fbanae4gyib/log. Is there anything I should do on the clang side?

Thanks, cheers
Antonio

The problem was due to some header files messed up on my mac. Removing all header files from /usr/local/include which were pointing to /Library/Developer/CommandLineTools fixed the situation.