“relocation R_X86_64_32S against ” linking Error

Question

I\'m Trying to Link a static Library to a shared library , I\'m Getting the Following error

/usr/bin/ld: ../../../libraries/log4cplus/liblog4cplus.a(fileappender.o         


        

Answer 1

Assuming you are generating a shared library, most probably what happens is that the variant of liblog4cplus.a you are using wasn't compiled with -fPIC. In linux, you can confirm this by extracting the object files from the static library and checking their relocations:

ar -x liblog4cplus.a  
readelf --relocs fileappender.o | egrep '(GOT|PLT|JU?MP_SLOT)'

If the output is empty, then the static library is not position-independent and cannot be used to generate a shared object.

Since the static library contains object code which was already compiled, providing the -fPIC flag won't help.

You need to get ahold of a version of liblog4cplus.a compiled with -fPIC and use that one instead.