‘致命错误：'wchar.h’文件未找到‘与新的macos 11.3更新错误
‘致命错误：'wchar.h’文件未找到‘与新的macos 11.3更新错误
提问于 2021-04-28 15:25:32
我对c++完全陌生(从那天开始从零开始学习)。今天我把这个macos更新到11.3，现在当我在clion中运行我的c++代码时，我得到了这个错误，
====================[ Build | untitled | Debug ]================================
/Applications/CLion.app/Contents/bin/cmake/mac/bin/cmake --build /Users/nibin/CLionProjects/untitled/cmake-build-debug --target untitled -- -j 6
[ 50%] Building CXX object CMakeFiles/untitled.dir/main.cpp.o
clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk' [-Wmissing-sysroot]
In file included from /Users/nibin/CLionProjects/untitled/main.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:214:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/iosfwd:95:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/wchar.h:119:15: fatal error: 'wchar.h' file not found
#include_next <wchar.h>
^~~~~~~~~
1 error generated.
make[3]: *** [CMakeFiles/untitled.dir/main.cpp.o] Error 1
make[2]: *** [CMakeFiles/untitled.dir/all] Error 2
make[1]: *** [CMakeFiles/untitled.dir/rule] Error 2
make: *** [untitled] Error 2我在网上搜索，但一个字也不懂。我试过了，在我的终端机里找到了这个，
➜ ~ xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
➜ ~ xcrun --show-sdk-path
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
➜ ~ sudo xcode-select --switch /Library/Developer/CommandLineTools/
Password:
➜ ~ xcrun --show-sdk-path
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk我已经有了xcode工具，而且它是最新的。我尝试了其中一个解决方案，就是改变路径，但仍然没有奏效。所以我把文件带回原来的位置，
➜ ~ sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer/
➜ ~ xcrun --show-sdk-path
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk我尝试了另一种解决方案，结果出错了，
➜ ~ open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
The file /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg does not exist.我打开了/Library/Developer/CommandLineTools/我得到了这个
➜ ~ cd /Library/Developer/CommandLineTools
➜ CommandLineTools ls
Library SDKs usr一些涉及清除缓存的解决方案“删除当前项目和依赖项中的任何旧CMakeCache.txt并重新构建解决了问题。”对不起，这听起来很傻，但我不太明白。这是否意味着我们必须删除整个文件CMakeCache.txt，还是只删除内容。
回答 1
Stack Overflow用户
回答已采纳
发布于 2021-05-07 11:00:22
“我们认为Tools | CMake | Reset Cache and Reload project在这种情况下应该有所帮助。”(https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000919219-Clion-can-t-compile-because-of-wchar-h-not-found-after-updated-Mojave-in-mac-)，这对我很有帮助。
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原文链接：
https://stackoverflow.com/questions/67303146
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