.tbd和.dylib

Xcode7 升级后 在引入动态库的时候 发现.tbd 取代了 .dylib出现在我们眼前

.dylib 去哪了

事实上.dylib 还在原来的位置，而且我们也可以通过解析.tbd 来找到他们，要使用原来的.dylib文件可以这样做:

• 选择"Add Other"
• 按下"CMD"+Shift+G"
• 输入"/usr/lib"

.tbd 是什么

经过苦苦的搜索之后，还是没有(!!!)任何有价值的文献，只在苹果开发者论坛中有一段来自苹果官方的回答:

For those who are curious, the .tbd files are new "text-based stub libraries", that provide a much more compact version of the stub libraries for use in the SDK, and help to significantly reduce its download size.

简单说.tbd 又是和苹果压缩 iOS 系统和应用体积的政策的产物。

.tbd 出错了

如果你在使用.tbd 时出现类似这样的的错误:

warning: skipping file ‘/Users/me/xcode7/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.0.sdk/usr/lib/libz.tbd’ (unexpected file type ‘text’ in Frameworks & Libraries build phase)”

请参考下面的解决办法:

       To work around this issue for now, please:

• Delete all references to .tbd files from either your linked libraries phase, or from the copied bundle resources phase (where they sometimes will be added).
• Add the library you want to link manually to the "Other Linker Flags" build settings, by adding the argument:

             -l<library_name>

          for each library you want to link (for example, add "-lsqlite3" (without quotes)).

也就是说:

• 删除所有 .tbd 引用，不论Link Binary With Libraries 中添加的  还是 copy bundle resources
• 在 Build Settings => Other Linker Flags 中手动将每一个你要导入的库以-l"<library_name>"的形式添加，例如你要导入sqlite3 则添加-l"sqlite3"。