New C++ Project in Xcode 10.2 is not building

Question

Have a macOS Mojave 10.14.6 with Xcode 10.2 (10E125)

I simply created new c++ project in this way:

Xcode -> New Project -> Command Line Tool -> [C++ Language] -> Next/Done

And it's not building at all. I even not touched code.

Here is errors

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string.h:74:64: Use of undeclared identifier 'strchr'

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string.h:81:75: Use of undeclared identifier 'strpbrk'

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string.h:88:65: Use of undeclared identifier 'strrchr'; did you mean 'strchr'?

etc...

NOTE 1: I tried to create same project but with C Language. And C Project working well until I'm adding #include <vector> . With vector I have same errors as in case with new C++ project.

NOTE 2: I don't think, that something is not been installed on my system. Since the same code works well with Objective-C project. (and I do not want to use h+mm I want to use hpp+cpp, if that is the problem)

Answer 1

I have your same setup, and it doesn't occur to me. Was you XCode installation like this from the start, or did it happen after you've done a couple of projects?

If it happened later on, my reasoning is this; once I used the fix button inside of XCode, but, instead of fixing my own code, it went and modified a system header. Perhaps this is what happened to you as well?

If that's the case, you need to reinstall the whole party.