Xcode9似乎不支持3rd llvm编译器？

Question

将默认的Apple-LLVM替换为从llvm.org下载的LLVM 5.0。 和编译，Xcode中抛出一个错误：

clang-5.0: error: cannot specify -o when generating multiple output files 

Xcode8是OK。

谢谢。

Answer 1

这不是一个铿锵5.0只问题。我与自定义的Clang 3.9有同样的问题。 的Xcode 9还引入了一个正常锵不支持自定义参数：

The -index-store-path argument does not exist in Clang 5.0 and it gets discarded without any error message. The problem is that its argument, a folder, is not discarded, and Clang considers it as a source file. This leads to the following errors:

• cannot specify -o when generating multiple output files (this happens if a -o argument is passed)
• error reading '<PATH>' (this can be observed when running the "normalized" version of the clang command, generated via the -### flag)

来源：Facebook/infer: Remove unsupported index-store-path argument from clang commands。

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在基于锵/ CMake的/我的Xcode工具链定制我使用wrapper around clang中，我只是切断了这种说法和文件夹传递给它，一切工作正常。