Reference: http://ftp.gnu.org/pub/old-gnu/Manuals/ld-2.9.1/html_node/ld_3.html
Add directory to the runtime library search path, for shared object.
Example: Add runtime search path /tmp/igetui
gcc -Wl,-rpath,/tmp/igetui/ $(PLATFORM) $(DEBUG) -lpthread -ldl
OR add it to LD_LIBRARY_PATH
ex.
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp/igetui
OR add it /etc/ld.so.conf and run ldconfig
