https://svn.boost.org/trac10/ticket/7853 <p> These are the compilation warnings from Boost 1.49 on this platform: FreeBSD RELENG_8 i386 gcc 4.2.2/4.6.3 </p> <p> ./boost/test/impl/execution_monitor.ipp:165:1: warning: "ILL_ILLADR" redefined /usr/include/sys/signal.h:239:1: warning: this is the location of the previous definition ./boost/test/impl/execution_monitor.ipp:166:1: warning: "ILL_PRVOPC" redefined /usr/include/sys/signal.h:241:1: warning: this is the location of the previous definition ./boost/test/impl/execution_monitor.ipp:168:1: warning: "ILL_COPROC" redefined /usr/include/sys/signal.h:243:1: warning: this is the location of the previous definition </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/7853 Trac 1.4.3 Gennadiy Rozental Wed, 08 Jul 2015 04:58:42 GMT https://svn.boost.org/trac10/ticket/7853#comment:1 https://svn.boost.org/trac10/ticket/7853#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">obsolete</span> </li> <li><strong>milestone</strong> <span class="trac-field-old">Boost 1.54.0</span> → <span class="trac-field-new">Boost 1.59.0</span> </li> </ul> <p> I see these defined undef the condition #if (<span class="underline">FreeBSD_version &lt; 70100) </span></p> <p> Please test against new release and if issue is still present please provide the patch. </p> Ticket