<div dir="ltr">Hi <br><br>I met another problem when I went in the Ipopt/test&nbsp; I met an error saying:<br><br>&nbsp;&quot;src/Interfence/.libs/<div dir="ltr">libiopt.a&lt;IpMa27SolverInterface.o&gt; IpMa27SolverInterface.cpp undefined reference to &#39;_Ma27cd_&#39;<br>

<br>&nbsp;&quot;src/Interfence/.libs/libiopt.a&lt;IpMa27SolverInterface.o&gt; IpMa27SolverInterface.cpp undefined reference to &#39;_Ma27bd_&#39;<br><br>&nbsp;&quot;src/Interfence/.libs/libiopt.a&lt;IpMa27SolverInterface.o&gt; IpMa27SolverInterface.cpp undefined reference to &#39;_Ma27ad_&#39;<br>

<br>&nbsp;&quot;src/Interfence/.libs/libiopt.a&lt;IpMa27SolverInterface.o&gt; IpMa27SolverInterface.cpp undefined reference to &#39;_Ma27id_&#39;<br><br><br>I already download the Ma27ad.f file into HSL folder.<br>Any idea?<br>
Thanks,<br><br>Bing<br></div></div>