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<h1>Building manually</h1>
<p>Manual builds let you choose the scope of a build, whether to build,
or rebuild projects. You can view the output of the make utility in the
C-Build view.</p>
<p>To rebuild all open projects:</p>
<p>You can manually rebuild all open projects. Depending
on the number of projects, the size of the projects, and the number of target
architectures, this action can take a significant amount of time. </p>
<ul>
<li>Click <b>Project &gt; Build Project</b>. </li>
</ul>
<p>To rebuild a single project:</p>
<p>Because rebuilding all open projects may be time-consuming, you may
want to build only certain projects.</p>
<ul>
<li>In C/C++ Projects view, right-click a project, and click <b>Rebuild Project</b>.</li>
</ul>
<p><b>Tip:</b> If you get the error message:</p>
<p><samp>Exec error:Launching failed</samp></p>
<p>The error message means
that the CDT cannot locate the build command, (usually <samp>make</samp>). Either your path is
not configured correctly or you do not have <samp>make</samp> installed on your system.</p>
<p><img border="0" src="../images/ngconcepts.gif" ALT="Related concepts" width="143" height="21">
<br>
<a href="../concepts/cdt_c_build_over.htm">Build overview</a></p>
<p><img border="0" src="../images/ngtasks.gif" ALT="Related tasks" width="143" height="21">
<br>
<a href="cdt_t_proj_build_set.htm">Defining Build Settings</a><br>
<a href="cdt_o_build_task.htm">Building</a></p>
<p><img border="0" src="../images/ngref.gif" ALT="Related reference" width="143" height="21">
<br>
<a href="../reference/cdt_u_newproj_buildset.htm">Make Builder page, C/C++ Properties window</a></p>
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