c++ - linker error "relocation R_X86_64_PC32 against undefined symbol" despite compilation with -fPIC -



c++ - linker error "relocation R_X86_64_PC32 against undefined symbol" despite compilation with -fPIC -

i'm compiling c++ programme using command line

g++ -c prog.cc -std=c++11 -march=native -fpic -fopenmp

and seek create shared object via

g++ prog.o -shared -fopenmp -o lib/libprog.so

this has worked. today get:

/usr/bin/ld: prog.o: relocation r_x86_64_pc32 against undefined symbol `_ztvn12_global__n_111handle_basee' can not used when making shared object; recompile -fpic /usr/bin/ld: final link failed: bad value collect2: error: ld returned 1 exit status

the symbol _ztvn12_global__n_111handle_basee de-mangles vtable (anonymous namespace)::handle_base (handle_base polymorphic class defined in anonymous namespace in prog.cc , yes phone call dynamic_cast<handle_base>().)

i'm using gcc version 4.7.0 (gcc) , gnu ld (gnu binutils; opensuse 11.1) 2.19. can help (suggest solutions [other doing without shared object or dynamic cast])?

i ran similar when upgrading ubuntu 14.04. had add together -fkeep-inline-functions source file defined 'missing' symbol. no thought if problem similar.

c++ gcc linker-error ld fpic

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