project 
    : requirements <library>../build//program_options
      <hardcode-dll-paths>true
    ;

exe first : first.cpp ;
exe options_description : options_description.cpp ;
exe multiple_sources : multiple_sources.cpp ;
exe custom_syntax : custom_syntax.cpp ;

exe a : a.cpp ;

#exe real : real.cpp ;
#exe regex : regex.cpp /boost/regex//boost_regex ;