什么是clang等效于--no-undefined gcc标志? [英] What is clang's equivalent to --no-undefined gcc flag?

问题描述

我正在尝试使用clang在Mac OS X上构建项目，并且在与ld: unknown option: --no-undefined链接的步骤上失败，该链接旨在使用gcc进行构建. 此选项对应的clang值是多少? (请不要建议使用gcc而不是clang.)

I am trying to build a project on Mac OS X using clang and it fails on linking step with ld: unknown option: --no-undefined, which is meant to built with gcc. What's the clang equivalent for this option? (Please, don't advise to use gcc instead of clang.)

还有一个更笼统的问题，是否有任何资源可以找到gcc和clang(链接器)选项差异之间的某种映射"?

Also, a more generic question, is there any resource where one can find some kind of a "mapping" between gcc and clang (linker) options differences?

谢谢.

推荐答案

OS X使用不同的链接器.正如@rubenvb指出的那样，它可能是来自 Apple的binutils 中的一个.如果运行man ld，并搜索"undefined"，则会找到此选项:

OS X uses a different linker. As @rubenvb points out, it's probably the one from Apple's binutils. If you run man ld, and search for "undefined", you will find this option:

-未定义的处理 指定如何处理未定义的符号.选项包括:错误，警告，禁止或dynamic_lookup.默认值为错误.

-undefined treatment Specifies how undefined symbols are to be treated. Options are: error, warning, suppress, or dynamic_lookup. The default is error.

因此，将-Wl,--no-undefined替换为-Wl,-undefined,error.另外，请使用卢克原力".

So, replace -Wl,--no-undefined with -Wl,-undefined,error. Also, use the Force, Luke.

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