build/org.eclipse.cdt.build.gcc.core/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.cdt.core.toolChainProvider">
      <provider
            class="org.eclipse.cdt.build.gcc.core.internal.GCCPathToolChainProvider"
            id="org.eclipse.cdt.build.gcc.core.gccPathProvider">
      </provider>
      <provider
            class="org.eclipse.cdt.build.gcc.core.internal.Msys2ToolChainProvider"
            id="org.eclipse.cdt.build.gcc.core.msys2Provider">
      </provider>
   </extension>

</plugin>