https://svn.boost.org/trac10/ticket/6516 <p> Hi, </p> <p> I am getting following error for iphone. Boost version 1_45_0 </p> <p> I dont know why but, spinlock.hpp and spinlock_pool.hpp is located Boost/smart_ptr/detail folder. At spinklock.hpp, I have edited like following: But it doen't resolve problem. I also tried to unchecked "thumb" at xcode, but not worked. </p> <p> #if defined(APPLE) &amp;&amp; defined(arm) # include &lt;boost/smart_ptr/detail/spinlock_pt.hpp&gt; #elif defined(GNUC) &amp;&amp; defined( arm ) &amp;&amp; !defined( thumb ) </p> <p> Error logs: ld: bad codegen, pointer diff in boost::signals::connection::connection(boost::signals::connection const&amp;)to global weak symbol boost::detail::spinlock_pool&lt;1&gt;::pool_ for architecture armv7 collect2: ld returned 1 exit status Command <a class="missing wiki">/Developer/Platforms</a>/iPhoneOS.platform/Developer/usr/bin/g++-4.2 failed with exit code 1 </p> <p> I will appreciate for your answer. </p> <p> Thanks, Shreyas </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/6516 Trac 1.4.3 viboes Mon, 28 May 2012 17:33:37 GMT https://svn.boost.org/trac10/ticket/6516#comment:1 https://svn.boost.org/trac10/ticket/6516#comment:1 <ul> <li><strong>owner</strong> set to <span class="trac-author">Peter Dimov</span> </li> <li><strong>component</strong> <span class="trac-field-old">None</span> → <span class="trac-field-new">smart_ptr</span> </li> </ul> <p> Please set the component in the future if you want it to be analyzed. </p> Ticket Peter Dimov Fri, 13 Dec 2013 22:37:49 GMT https://svn.boost.org/trac10/ticket/6516#comment:2 https://svn.boost.org/trac10/ticket/6516#comment:2 <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">fixed</span> </li> </ul> <p> Is this still relevant? I'm going to close it as too old; please reopen if this is still a problem. </p> Ticket