Xcode 10 beta 4 - stdlibc++ headers not found; |Apple Developer Forums

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Latest reply on Jul 24, 2019 7:54 PM by aungbaw

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marinercoder Jul 18, 2018 9:23 AM

I get this warning compiling Tesseract OCR engine on beta 4.

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]

After the warning I get an error <string. or <vector> not found.

Can anyone help? What exactly do I need to do to move forward?

Worked fine with beta 3 (and for the last 10 years). If I try to edit the file Xcode then crashes.

Re: Xcode 10 beta 4 - stdlibc++ headers not found;

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marinercoder Jul 19, 2018 11:28 AM (in response to marinercoder)

If anyone else has this issue, there is a a setting in build setting for which will set which c++ libraries to use (libc++ is now default). in my case I simply changed the minimum system to something recent, Xcode then will seset the critical bits for you.
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Re: Xcode 10 beta 4 - stdlibc++ headers not found;

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gsmalley Sep 19, 2018 12:18 AM (in response to marinercoder)

For anyone else encountering this issue, I was encountering it because one of my project's frameworks was still using the old "libstdc++" library which is now unsupported in Xcode 10. I had to go into the framework's Build Settings, scroll all the way down to "Apple Clang - Language - C++" and change the C++ Standard Library from "libstdc++ (GNU C++ standard library)" to "libc++ (LLVM C++ standard library with C++11 support)"
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Re: Xcode 10 beta 4 - stdlibc++ headers not found;

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Fengmap Sep 19, 2018 9:06 PM (in response to marinercoder)

I also encountered such a problem, but I solved it like this.
copy from

/Applications/Xcode9.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/c++ to Xcode10 the same path

Xcode10 had deleted it.

also,you should copy simulator c++ files.

hope that it works.
good luck.
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- Re: Xcode 10 beta 4 - stdlibc++ headers not found;
  
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  iwai Sep 30, 2018 5:53 AM (in response to Fengmap)
  
  To solve this problem completely, I needed to copy the following libraries as well as the headers:
  libstdc++.tbd, libstdc++.6.tbd and libstdc++.6.0.9.tbd
  in /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib.
  Thx.
  
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  - Re: Xcode 10 beta 4 - stdlibc++ headers not found;
    
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    e1m2c4@yahoo.com Oct 8, 2018 8:22 AM (in response to iwai)
    
    Could you explain your solution better?
    
    I get that you have found
    these files:
    libstdc++.tbd, libstdc++.6.tbd and libstdc++.6.0.9.tbd
    
    here:
    Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib.
    
    move to:
    [INSERT DIRECTORY (...I am dumb I am sorry...)]
    
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  - Re: Xcode 10 beta 4 - stdlibc++ headers not found;
    
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    vanthach May 2, 2019 5:08 AM (in response to iwai)
    
    I copy file but not run.
    
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- Re: Xcode 10 beta 4 - stdlibc++ headers not found;
  
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  cabreu Jul 19, 2019 8:04 AM (in response to Fengmap)
  
  How can I copy the simulator files? Where is it? Could you help me?
  
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Re: Xcode 10 beta 4 - stdlibc++ headers not found;

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aungbaw Jul 24, 2019 7:54 PM (in response to marinercoder)

Same problem happened to me, i just upgrade to 10.15 beta and install libc++
via brew. Hope it's working for you too.
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