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<title>10.3.2 -dl option  </title>

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<h3>
  <a name="1204756"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">10.3.2 	 -dl option</font>
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<p>
  <a name="1205819"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif"><strong>st20cc</strong> provides support for importing and exporting functions with the <font  face="Verdana, Arial, Helvetica, sans-serif"><b>dl</b></font> option. With this option, an RCU is built with an entry point that returns the program's import and export list when called. These lists can then be updated by the calling program. Thus using the <font  face="Verdana, Arial, Helvetica, sans-serif"><b>dl</b></font> option, <strong>st20cc</strong> generates an RCU with an entry point which is a means to access all the RCU's imported and exported symbols. Unlike the <font  face="Verdana, Arial, Helvetica, sans-serif"><b>rcu</b></font> option, the entrypoint cannot be used to call a user specified function, which must be done through an <font size=2 face=Courier><strong>export</strong></font> command.</font>
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<h5>
  <a name="1204757"> </a><i><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Example</font></i>
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  <a name="1204758"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">If the program <font size=2 face=Courier><strong>lib1 </strong></font>is built with the <font  face="Verdana, Arial, Helvetica, sans-serif"><b>dl</b></font> option then it may be invoked as follows (where <font size=2 face=Courier><strong>rd</strong></font> is an <font size=2 face=Courier><strong>rcu_data</strong></font> type; see <a href="rcu6.htm#1204595"><font  color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section

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