大佬教程收集整理的这篇文章主要介绍了xcode – 来自链接器的奇怪警告(ld)，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
该应用程序运行正常,但广告编译时我们总是得到这些奇怪的链接器警告：
ld: warning: direct access in ___cxx_global_var_init17 to global weak symbol __ZGVN4i18n12phonenumbers9SingletonINS0_15PhonenumberUtilEE8instanceE means the weak symbol cAnnot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility setTings. ld: warning: direct access in ___cxx_global_var_init17 to global weak symbol __ZGVN4i18n12phonenumbers9SingletonINS0_15PhonenumberUtilEE8instanceE means the weak symbol cAnnot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility setTings. ld: warning: direct access in ___cxx_global_var_init17 to global weak symbol __ZN5boost10scoped_ptrIN4i18n12phonenumbers15PhonenumberUtilEED1Ev means the weak symbol cAnnot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility setTings. ld: warning: direct access in ___cxx_global_var_init17 to global weak symbol __ZN4i18n12phonenumbers9SingletonINS0_15PhonenumberUtilEE8instanceE means the weak symbol cAnnot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility setTings. ld: warning: direct access in ___cxx_global_var_init17 to global weak symbol __ZGVN4i18n12phonenumbers9SingletonINS0_15PhonenumberUtilEE8instanceE means the weak symbol cAnnot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility setTings.
> libphonenumber,显然是导致5个警告中的4个的一个.由我们通过“cmake”编译.
> boost(libboost_thread-mt),负责1次警告.使用MacPorts编译.
> ICU(libicudata,libicuuc,libicui18n),使用MacPorts编译.
> Protocol Buffers,通过“./configure&& make”编译.
请注意：
>尽管有警告,应用程序仍能正常运行,但我们想摆脱它们,因为它们很烦人.
> xcode with boost : linker(Id) Warning about visibility settings提出的解决方案不起作用：“默认隐藏的符号”始终为“是”.
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