For ARM both `__sync_bool_compare_and_swap` and `__sync_lock_test_and_set` result with function calls that are probably provided by libgcc. --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/pull/266#issuecomment-122032691 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1