Using  Boost.Jam  Version 3.1.14. OS=LINUX<br><br>I want to override the installation directory that was specified via an<br>environment variable. i.e in my Jamroot.jam  <br><br>.....<br>alias install : install-server install-client install-simulator ;<br>
install install-server    : Server//install    : &lt;location&gt;$ECF_INSTALL_DIR ;<br>install install-client    : Client//install    : &lt;location&gt;$ECF_INSTALL_DIR ;<br>install install-simulator : Simulator//install : &lt;location&gt;$ECF_INSTALL_DIR ;<br>
explicit install-server ;<br>explicit install-client ;<br>explicit install-simulator ;<br>explicit install ;<br><br>This all works OK.   ECF_INSTALL_DIR is an environment variable<br>   bjam install<br><br>However when I do:<br>
    bjam install -s ECF_INSTALL_DIR=$HOME/bin<br><br>It ignores the -s, and still uses the environment variable setting.<br>The documention for -s says:<br clear="all"><dl><dt><span class="term"><code class="literal">-s <span class="emphasis"><em>var</em></span>=<span class="emphasis"><em>value</em></span></code></span></dt>
<dd><p>
            Set the variable <span class="emphasis"><em>var</em></span> to <span class="emphasis"><em>value</em></span>,
            overriding both internal variables and variables imported from the environment.
          </p></dd></dl>have i missed something obvious , as this does not appear to work ?<br><br>Any help appreciated.<br><br>   Best regards,<br>Ta,<br>    Avi<br><br>