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社区首页 >问答首页 >Xcode:致命错误：“iostream”文件未找到

问Xcode:致命错误：“iostream”文件未找到
EN

Stack Overflow用户
提问于 2021-01-11 15:40:41
回答 2查看 396关注 0票数 1

OS：macOS Big Sur版本11.1 Xcode：Version 12.3

我已经8个月左右没有在Mac上运行C++了。我试图运行一个简单的helloworld.cpp文件：

代码语言：javascript
复制
#include <iostream>
using namespace std;


int main() {
    std::cout << "Hello World!";

    return 0;
}

当我在我的终端运行cpp helloworld.cpp时，我会收到：

helloworld.cpp:1:10: fatal error: 'iostream' file not found

当我运行clang++ -v helloworld.cpp时，它说(后面跟着一个长错误)：

InstalledDir: /Library/Developer/CommandLineTools/usr/bin

我认为InstalledDir路径是基于我看到的其他帖子的问题。当我在Xcode或CLion中运行代码时，它工作得很好。我查看了关于YouTube的本教程，它将路径更改为：

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/

但是，我不知道如何更改InstalledDir的这条路径(假设这就是问题所在)，以便它能够在终端中工作，而不仅仅是在Xcode内部。

更新:我还尝试使用xcode-select --switch /Applications/Xcode.app/Contents/Developer/从/Library/Developer/CommandLineTools/usr/bin更改路径，但仍在接收错误。

错误：

代码语言：javascript
复制
In file included from helloworld.cpp:1:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iostream:37:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/ios:215:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__locale:14:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:504:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/algorithm:642:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/utility:204:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:144:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
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In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
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In file included from /usr/local/include/stdint.h:59:
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In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
In file included from /usr/local/include/stdint.h:59:
/usr/local/include/stdint.h:2:10: error: #include nested too deeply
#include <stddef.h>
         ^
/usr/local/include/stdint.h:72:11: error: #include nested too deeply
# include <sys/types.h>
          ^
/usr/local/include/stdint.h:76:10: error: #include nested too deeply
#include <limits.h>
         ^
/usr/local/include/stdint.h:82:11: error: #include nested too deeply
# include <inttypes.h>
          ^
In file included from helloworld.cpp:1:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iostream:37:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/ios:215:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__locale:14:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:504:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/algorithm:642:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/utility:204:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:160:8: error: 
      no member named 'uint64_t' in the global namespace
using::uint64_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:162:8: error: 
      no member named 'int_least8_t' in the global namespace
using::int_least8_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:163:8: error: 
      no member named 'int_least16_t' in the global namespace
using::int_least16_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:164:8: error: 
      no member named 'int_least32_t' in the global namespace
using::int_least32_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:165:8: error: 
      no member named 'int_least64_t' in the global namespace
using::int_least64_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:167:8: error: 
      no member named 'uint_least8_t' in the global namespace
using::uint_least8_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:168:8: error: 
      no member named 'uint_least16_t' in the global namespace
using::uint_least16_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:169:8: error: 
      no member named 'uint_least32_t' in the global namespace
using::uint_least32_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:170:8: error: 
      no member named 'uint_least64_t' in the global namespace
using::uint_least64_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:172:8: error: 
      no member named 'int_fast8_t' in the global namespace
using::int_fast8_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:173:8: error: 
      no member named 'int_fast16_t' in the global namespace
using::int_fast16_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:174:8: error: 
      no member named 'int_fast32_t' in the global namespace
using::int_fast32_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:175:8: error: 
      no member named 'int_fast64_t' in the global namespace
using::int_fast64_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:177:8: error: 
      no member named 'uint_fast8_t' in the global namespace
using::uint_fast8_t;
     ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstdint:178:8: error: 
      no member named 'uint_fast16_t' in the global namespace
using::uint_fast16_t;
     ~~^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.

这篇文章已经在评论中得到解决。

c++
xcode
macos
clang
EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2021-01-12 20:34:03

我找到了这个吉特布哨所并使用了以下命令：

代码语言：javascript
复制
mkdir /tmp/includes
brew doctor 2>&1 | grep "/usr/local/include" | awk '{$1=$1;print}' | xargs -I _ mv _ /tmp/includes
票数 0
EN

Stack Overflow用户

发布于 2021-01-12 07:11:05

您不应该在stdint.h中使用/usr/local/include。那份文件是从哪里来的？

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/65669945

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