{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 放荡不羁爱自由 的问题《How to get support for thread_local on Mac OSX cla》','https://www.manongdao.com/q-627267.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
As shown in this answer, clang from Xcode on Mac OSX does not support thread_local storage even with C++11 flags set. Even on the latest version, Apple LLVM version 7.0.0 (clang-700.1.76), Target: x86_64-apple-darwin15.0.0, Thread model: posix, does not support thread_local:
../../src/dir/sysArch.h:1505:3: error: thread-local storage is not supported
for the current target
thread_local
^
The version of clang supplied with Xcode 8 (and later) supports the
thread_localkeyword; see the discussion here.