Hi Andreas, Looking at the GNUmakefile for XrdOuc it's obvious that XrdSysLogger is improperly included in that build. A bug, obviously. So, easy to correct. If you can, simply fix the GNUmakefile for XrdOuc to remove that file from the list and rebuild. I suspect that there may be instance where someone relied on this (bad) behaviour so there XrdSys.a will need to be added. Let me know how you want to proceed. Andy ----- Original Message ----- From: Andreas-Joachim Peters To: xrootd-dev Sent: Thursday, September 23, 2010 5:20 AM Subject: xrootd protocol 'classic build' static library overlaps I face the following problem with the static library structure in the head using the classic build: nm /tmp/classic/lib/libXrdSys.a | grep _ZN12XrdSysLoggerC1Eii 0000000000000930 T _ZN12XrdSysLoggerC1Eii nm /tmp/classic/lib/libXrdOuc.a | grep _ZN12XrdSysLoggerC1Eii 0000000000000930 T _ZN12XrdSysLoggerC1Eii nm /tmp/classic/lib/libXrdSys.a | grep strlcpy 0000000000000000 T strlcpy nm /tmp/classic/lib/libXrdOuc.a | grep strlcpy U strlcpy As in this example: if I need some function using strlcpy I need to link XrdOuc & XrdSys, but both libraries are only as static available ( XrdOuc links some objects from XrdSys in but not all!) and I get double defined symbols (on MAC). What can we do here? Cheers Andreas.