QuantLib installation on Mac OS X

Hi there,
   I tried to get Quantlib installed on my Mac OS X. I followed the installation on the official website http://quantlib.org/install/macosx.shtml.   Everything works fine  and I can use g++ -I/opt/local/include/ -I/opt/local/include/boost BermudanSwaption.cpp  -o bermudanswaption -L/opt/local/lib/ -lQuantLib to compile and run. 
   The Appendix: Boost configuration really makes me suffer.  No matter if I put export DYLD_LIBRARY_PATH=/opt/local/lib in the .bash_profile, I cannot link QuantLib against .o files, which means I have to type " g++ bermudanswaption -L/opt/local/lib/ -lQuantLib   "  manually to make it work.