<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hey All;</div><div><br></div><div>Meet the following link error using LLVM 2.0 based on XCode 4.0.1, I don't know what does it mean and how to fix it? please help, thanks. </div><div><br></div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">ld: bad codegen, pointer diff in ___cxx_global_var_init79 to global weak symbol __ZN5boost16exception_detail23exception_ptr_bad_allocILi42EE1eE for architecture armv7</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">clang: error: linker command failed with exit code 1 (use -v to see invocation)</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang++ failed with exit code 1</div></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">ENV:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">yuma:MyApp yujianhuayu$ clang -v</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">Apple clang version 2.0 (tags/Apple/clang-138) (based on LLVM 2.9svn)</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">Target: x86_64-apple-darwin10</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">Thread model: posix</div></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; ">BTW:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 12px; text-indent: -12px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-style-span" style="font-family: 'Heiti SC'; font-size: medium; ">Seems link well for simulator but bad for device. </span></div></body></html>