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<para>
Configuring the right options to build programs to work with the
libraries--especially shared libraries--installed on a POSIX system
can be very complicated.
Various utilies with names that end in <filename>config</filename>
can return command-line options for the
GNU Compiler Collection
</para>
<para>
&SCons; construction environments have a &ParseConfig; method
that executes a utility and configures
the appropriate construction variables
in the environment
based on the command-line options
returned by the specified command.
</para>
</para>
<programlisting>
env = Environment()
env.ParseConfig("pkg-config x11")
</programlisting>
<para>
&SCons; will execute the specified command string
and XXX
</para>
<screen>
% <userinput>scons -Q</userinput>
scons: `.' is up to date.
</screen>
<para>
XXX
</para>
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