ios - Apple Mach-O 链接器警告直接访问...到全局弱符号

Question

我正在使用 xcode 4.2 和 ios 5.0 sdk 构建 iphone 应用程序。 另外，我导入了 opencv 库，并用 opencv 函数编写了一些 *.cpp 代码。 但是，我得到了很多类似的“apple mach-o linker waring”

例如-

ld: warning: direct access in __ZN15CvBlobTrackerCCC2Ev to global weak symbol __ZTV9CvBlobSeq 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 __ZN18CvBlobTrackerAuto1C2EP23CvBlobTrackerAutoParam1 to global weak symbol __ZTV9CvBlobSeq means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings.

我该如何解决这个问题？ 谢谢!

编辑: 只是发现- xcode with boost : linker(Id) Warning about visibility settings

Answer 1

Apple Mach-O 链接器警告出现在以下情况

1.当相关文件没有正确链接到目标时。 2.相关文件框架未与代码链接时。 3.复制文件使编译器混淆

请对照他们检查你的情况。

如果有人发现我上面没有列出的任何其他原因，请将其添加到列表中。