如何修复“严重错误：找不到'iostream'文件”升级到Xcode 10.1后 [英] How to fix "fatal error: 'iostream' file not found" after upgrading to Xcode 10.1

问题描述

此错误仅在更新Xcode（和MacOS Mojave 10.14）之后才出现。 #include< Python> 发生了类似的事情，我改用#include python2.7 / Python.h进行了修复。

This error has only appeared for me since updating Xcode (and to MacOS Mojave 10.14). Something similar happened with #include <Python>, which I fixed by instead using #include "python2.7/Python.h".

在中讨论了类似的错误Clang看不到基本标头。当我尝试

clang ++ -stdlib = libc ++ PyTrans.cpp -o -v

我得到

ld：对于体系结构x86_64
lang找不到符号：错误：链接器命令失败，退出代码为1（使用-v查看调用）。

完整错误：

warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]

/Users/joe/Documents/Research/EkpPyTransportDist/PyTransport/PyTrans/PyTrans.cpp:20:10：致命错误：找不到 iostream文件
include< iostream>
^ ~~~~~~~~~
1条警告和1条错误。
错误：命令 gcc失败，退出状态为1

任何帮助将不胜感激；我对C ++很陌生。

Any help would be greatly appreciated; I am very new to C++.

编辑：括号内的空格。

推荐答案

如果仔细阅读错误消息，您会看到它说在命令行中传递 -std = libc ++ 。如果您重新阅读实际写的内容，则会显示 -stdlib = libc ++ 。删除其中多余的 lib ，它应该可以正常工作。

If you read the error message carefully, you'll see that it says "pass -std=libc++ on the command line." If you re-read what you actually wrote, it says -stdlib=libc++. Remove the extra lib you have in there and it should work just fine.

另外，正如其他人评论的那样您的帖子，应该删除include指令中的空格： #include< iostream>

Also, as others have commented on your post, you should remove the spaces in your include directives: #include <iostream>

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