[Boost-build] using alias

From: Jeffrey Holle (jeffreyholle_at_[hidden])
Date: 2007-07-16 15:35:03

I am using Boost.Build V2 (Milestone 11) Boost.Jam 03.1.15 on a Linux 
system.

In the document boost.build.v2.user_manual.pdf, I observed the following 
example:

   alias gtk+-2.0 : : : :
   <cflags>"`pkg-config --cflags gtk+-2.0`"
   <linkflags>"`pkg-config --libs gtk+-2.0`"
   ;

I've attempted the same idea with:
   alias wxWidgets : : : :
   <cxxflags>"'wx-config --cppflags'"
   ;

As documented, I added wxWidgets to the sources section of a library I'm 
attempting to build.  However, it had no affect.

Could someone please explain?