+#libraries['flac'] = LibraryInfo (LIBS='FLAC')
+
+# boost (we don't link against boost, just use some header files)
+
+libraries['boost'] = LibraryInfo ()
+conf = Configure (libraries['boost'])
+if conf.CheckHeader ('boost/shared_ptr.hpp', language='CXX') == 0:
+ print "Boost header files do not appear to be installed."
+ sys.exit (1)
+
+libraries['boost'] = conf.Finish ()