2010/6/10 lulu he <loloseed@xxxxxxxxx>: > 2010/6/10 lulu he <loloseed@xxxxxxxxx>: >> 2010/6/10 lulu he <loloseed@xxxxxxxxx>: >>> 2010/6/9 Ian Lance Taylor <iant@xxxxxxxxxx>: >>>> lulu he <loloseed@xxxxxxxxx> writes: >>>> >>>>> I made a mistake, The error message is : >>>>> /usr/local/lib64/libstdc++.so: undefined reference to >>>>> '_Unwind_GetIPInfo@xxxxxxxxx' >>>>> >>>>> and I soft link /usr/local/lib64/libstdc++.so TO >>>>> /usr/local/gcc43/lib64/libstdc++.so, >>>>> so it gcc43 is using the libstdc++.so in gcc43/lib64. >>>>> ... >>>> >>>> Please reply to the mailing list, not just to me. >>>> >>>> The symbol Unwind_GetIPInfo@xxxxxxxxx should be defined in >>>> libgcc_s.so. Perhaps you are somehow picking up the wrong version of >>>> that library. >>>> >>>> Ian >>>> >>> >>> Hi, lan >>> >>> That's right. >>> g++ search .so in the /usr/local/lib64, instead of ..../gcc-4.3.3/lib64 , >>> So I soft link all the .so in the /usr/local/lib64 TO ..../gcc-4.3.3/lib64 , >>> and "g++ -o hello hello.cpp" works right now. >>> >>> What an awkward method! >>> I have to soft link /usr/local/lib64/*.so back again if I wanna use >>> another gcc version! >>> >>> Do u have another better solution to tell gcc search to search >>> "..../gcc-4.3.3/lib64" directory by a global setting, >>> not by "-L" option?? >>> >> >> I have soft link /usr/local/lib64/libgcc_s.so TO >> /usr/local/gcc-4.3.3/lib64/libgcc_s.so, >> and >> soft link /usr/local/lib64/libstdc++.so TO >> /usr/local/gcc-4.3.3/lib64/libstdc++.so >> but error is still reported: >> /usr/local/lib64/libstdc++.so: undefined reference to >> '_Unwind_GetIPInfo@xxxxxxxxx' >> > > > Hi lan, > > I use the nm command: > nm libstdc++.so |grep _Unwind_GetIPInfo , > it output "U _Unwind_GetIPInfo@xxxxxxxxx" > > but > nm libgcc_s.so |grep _Unwind_GetIPInfo , > it output "U _Unwind_GetIPInfo" > > that doesn't match , I doubt the error is here??? > > How i can fix that? > > Thanks. > O GOD, I finally fix it by rename libgcc_s.so.1 . mv /usr/local/lib64/libgcc_s.so.1 /usr/local/lib64/libgcc_s.so.1.old Everything is fine! But why??? Thanks.
