 gcc, or both debug and release variants in one invocation.
            
        </div>
        
        <div class="col-md-6">
          <p>
          <b>Global dependencies</b>. No matter what directory you build
          in, Boost.Build will always check all dependencies in your entire
          project, preventing inconsistent binaries.  And it's easy to
          use one Boost.Build project in other, again with full dependency
          tracking.
          
          <p>
          <b>Usage requirement