Re: g++ fails with error

[bharath144]

On Thursday, August 15, 2013 12:54:48 AM UTC+5:30, Gerhard Fiedler wrote:
> 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

Well, I have tried that. Moreover, My first step (which is the compilation) 
already has the -fPIC option included.