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undefined reference
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Hi guys ! This has been killing me for 8 hours
Things work well I'm compiling this way :
But when I add a link to /usr/local/sesam/lib/libssv.so that i need
I get :
dont know how to fix it... it will compile on my mate's comp but not on mine
when i run on my friends's, it will print one more line than on mine : tried to link that library on mine but didn't succed. Locating it will find :
Maybe this is why my program wont compile on my computer...
I can provide more details if you need.
Hope you can help
Things work well I'm compiling this way :
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g++ -Wall -o prog prog.cpp -L/usr/local/sesam/lib -Wl,-rpath /usr/local/sesam/lib -Wl,-rpath,/usr/sesam/lib -ldl -lc
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g++ -Wall -o prog prog.cpp -L/usr/local/sesam/lib -lssv -Wl,-rpath /usr/local/sesam/lib -Wl,-rpath,/usr/local -ldl -lc
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/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « ios virtual table»/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « ws(istream &) »
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __rtti_user »
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istream::ios virtual table»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __throw »
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « terminate(void)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istream::get(char *, int, char)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istream::getline(char *, int, char)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istrstream::istrstream(int, char const *, int)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istrstream::~istrstream(void)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istream::ignore(int, int)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « ifstream::~ifstream(void)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « istream::peek(void)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __builtin_vec_new »
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __builtin_vec_delete »
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « fstreambase::fstreambase(int, char const *, int, int)»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « ifstream::ios virtual table»
/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __builtin_delete »/usr/local/sesam/lib/libsgd.so: référence indéfinie vers « __builtin_new »
when i run
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ldd prog
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libstdc++-libc6.1-1.so.2 => /usr/lib/libstdc++-libc6.1-1.so.2 (0xb7bf3000)
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/usr/lib/libstdc++-libc6.1-1.so.2
I can provide more details if you need.
Hope you can help
Last edited by Spartan552; May 22nd, 2008 at 6:10 am.
1. I wonder why things work without linking to /usr/local/sesam/lib/libssv.so if you need it.
And if links without it I wonder why you need it.
2. Compare the size/timestamp of your mate's lib and your lib (/usr/lib/libstdc++-libc6.1-1.so.2). I think comparing the symbol table would be an overkill if size/timestamp are same.
3. Can't really say much except that when you link with ssv, the symbols needed by it are not available so it gives errors ! But I think it's pretty obvious..
It does seem like the symbols you need might be there in stdc++. But you can confirm it once. So what you can do is:
- "ldd prog" on mate's comp
- then look for one of the symbols say "terminate(void)" in all .so files listed there. (donno what's teh command to list all symbols in a .so in gnu. In Sun workshop it's nm -C, so it goes like this: nm -C <xxx.so>| grep "terminate")
- Then find the same .so on your machine and check that it also contains the symbols, if it does link with it, if it doesn't it's a problem with your installation/version..
Lastly, check the documentation of your STL impl. Usually if you link to .so(s) specified there things should work.
And if links without it I wonder why you need it.
2. Compare the size/timestamp of your mate's lib and your lib (/usr/lib/libstdc++-libc6.1-1.so.2). I think comparing the symbol table would be an overkill if size/timestamp are same.
3. Can't really say much except that when you link with ssv, the symbols needed by it are not available so it gives errors ! But I think it's pretty obvious..
It does seem like the symbols you need might be there in stdc++. But you can confirm it once. So what you can do is:
- "ldd prog" on mate's comp
- then look for one of the symbols say "terminate(void)" in all .so files listed there. (donno what's teh command to list all symbols in a .so in gnu. In Sun workshop it's nm -C, so it goes like this: nm -C <xxx.so>| grep "terminate")
- Then find the same .so on your machine and check that it also contains the symbols, if it does link with it, if it doesn't it's a problem with your installation/version..
Lastly, check the documentation of your STL impl. Usually if you link to .so(s) specified there things should work.
Last edited by thekashyap; May 22nd, 2008 at 7:43 am.
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