Run-time symbol resolution (cont.)

The -Bsymbolic linker option

bash$ gcc -g -c -fPIC -Wall -c foo.c
bash$ gcc -g -shared -o libfoo.so foo.o
bash$ gcc -g -Wl,-Bsymbolic -o prog prog.c libfoo.so
bash$ LD_LIBRARY_PATH=. ./prog
foo-xyz

-Bsymbolic says that references to global symbols within a shared library should be preferentially bound to definitions in that library.