Re: g++ fails with error

[Gerhard Fiedler]

bharath144@gmail.com wrote:

> Hello,
> 
> I have a c++ shared object that I am compiling using the following command.
> 
> g++ -g -Wall -c -o cpplib.o cpplib.cpp
> 
> And I am creating the shared object using the following command. 
> 
> g++ -shared -o libcpplib.so cpplib.o
> 
> (I am aware that I can do this one single command, these are two separate 
> invocations because I had the project setup on eclipse and that's how eclipse 
> cdt does it.).
> 
> My host runs a RedHat 6.x x86_64 OS.
> 
> The compilation fails with the following error.
> 
> [root@dev-80 cpplib]# g++ -g -Wall -fPIC -c -o cpplib.o cpplib.cpp
> [root@dev-80 cpplib]# g++ -shared -fPIC -o libcpplib.so cpplib.o
> /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libstdc++.a(ios_init.o): 
> relocation R_X86_64_32 against `pthread_cancel' can not be used when making a 
> shared object; recompile with -fPIC
> /usr/lib/gcc/x86_64-redhat-linux/4.4.7/libstdc++.a: could not read symbols: 
> Bad value
> collect2: ld returned 1 exit status
> [root@dev-80 cpplib]#
> 
> I am certain that I haven't used the 'pthread_cancel' function in my code.
> 
> Can anyone help me with this?

Did you try what the error message says? That is,

g++ -g -Wall -fPIC -c -o cpplib.o cpplib.cpp

Gerhard