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Daniel yes, I found it too :) - adding -lcrypto helps, but it must be at the end: g++ -o bld/proto/testProtocol bld/proto/testProtocol.o -L/home/becla/cssProto/lib/mysql -L/home/becla/cssProto/lib -L/home/becla/cssProto/lib -lprotobuf -lssl bld/proto/TaskMsgDigest.cc.staticobj bld/proto/worker.pb.os -lcrypto works, but this does not: g++ -o bld/proto/testProtocol bld/proto/testProtocol.o -L/home/becla/cssProto/lib/mysql -L/home/becla/cssProto/lib -L/home/becla/cssProto/lib -lprotobuf -lssl -lcrypto bld/proto/TaskMsgDigest.cc.staticobj bld/proto/worker.pb.os bld/proto/TaskMsgDigest.cc.staticobj: In function `lsst::qserv::hashTaskMsg(lsst::qserv::TaskMsg const&)': TaskMsgDigest.cc:(.text+0x6e): undefined reference to `MD5' collect2: ld returned 1 exit status Ok to add it to SConscript? (where?) Jacek On 02/26/2014 07:27 PM, Wang, Daniel Liwei wrote: > Jacek, > >> Things are now failing to link because of md5: >> >> g++ -o bld/proto/testProtocol bld/proto/testProtocol.o >> -L/home/becla/cssProto/lib/mysql -L/home/becla/cssProto/lib >> -L/home/becla/cssProto/lib -lprotobuf -lssl >> bld/proto/TaskMsgDigest.cc.staticobj bld/proto/worker.pb.os >> bld/proto/TaskMsgDigest.cc.staticobj: In function >> `lsst::qserv::hashTaskMsg(lsst::qserv::TaskMsg const&)': >> TaskMsgDigest.cc:(.text+0x6e): undefined reference to `MD5' >> collect2: ld returned 1 exit status > You might try linking with libcrypto as well. (-lcrypto), but RHEL6 > doesn't seem to need it: > > g++ -o bld2/proto/testProtocol bld2/proto/testProtocol.o > -L/u1/local/lib/mysql -L/u1/local/lib -L/u1/lsst/xrootd-inst/lib64 > -lprotobuf -lssl bld2/proto/TaskMsgDigest.cc.staticobj > bld2/proto/worker.pb.os > > works fine without any problem. It might just be a difference in how > redhat and debian decide to do the packaging (which wouldn't be surprising). > > > -Daniel > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1