"no such sysroot directory" while building qt project

user_5575273 0
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MacOS Mojave Version 10.14 (18A389).

Today I updated Xcode to version 10.0 (10A255). End when I try to build my Qt project I get an error: 

clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk' [-Wmissing-sysroot]
In file included from ../greed/timediagram.cpp:1:
In file included from ../../../Qt/5.9.1/clang_64/lib/QtGui.framework/Headers/QtGui:3:
In file included from /Users/arsenyspiridonov/Qt/5.9.1/clang_64/lib/QtGui.framework/Headers/QtGuiDepends:3:
In file included from /Users/arsenyspiridonov/Qt/5.9.1/clang_64/lib/QtCore.framework/Headers/QtCore:4:
In file included from ../../../Qt/5.9.1/clang_64/lib/QtCore.framework/Headers/qglobal.h:47:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/utility:202:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstring:61:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string.h:61:15: fatal error: 'string.h' file not found
#include_next <string.h>
              ^~~~~~~~~~
1 error generated.
make: *** [timediagram.o] Error 1
16:13:47: Процесс «/usr/bin/make» завершился с кодом 2.
Ошибка при сборке/установке проекта greed (комплект: Desktop Qt 5.9.1 clang 64bit)
Во время выполнения этапа «Сборка»

What's the problem? How to fix it?

xcode macos qt
7 Answers

add 'QMAKE_MAC_SDK = macosx10.14' to your .pro file, and manually delete .qmake.stash from your build directory (or directories).

user_103810930

In my case I updated xcode to the last version, so instead of have on the folder the version 10.13, I had MacOSX10.14.sdk ( that is a symbolic link to the folder MacOSX.sdk)

so, you can solve the problem with this code on terminal:

sudo ln -s MacOSX.sdk/ MacOSX10.13.sdk

positioned on the current folder.

I hope it helps.

user_43855100

I just reinstalled Qt. All is Ok now

user_55752730

This helped me:

  1. Close the project in Qt Creator.
  2. Delete the .pro.user file in your code directory.
  3. Add QMAKE_MAC_SDK = macosx10.14 and QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.14 to your .pro file in a text editor (not in Qt Creator). Replace 10.14 with whatever MacOS version you want to build for.
  4. Re-open the project in Qt Creator. It will reconfigure.
  5. Build.
user_12325240

Adding to sellen's Answer: If you have trouble locating your .qmake.stash file, or if you don't have a .qmake.stash file in your build folder, try locating it using the terminal:

find /path/to/base/folder -name ".qmake.stash"

In my case I had a .qmake.stash file in my build parent folder, but not in my build folder. Not sure how it got there but somehow QMake picked it up and as soon as I deleted it and restarted Qt Creator things started to work again.

user_12325240

the fast solution is to create new shotcut in /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs folder, you can copy the exist shortcut, them change the name you need.

user_58091460

This happen to me recently and my Xcode needed to update. So I would recommend quitting xcode and trying to update your current version to see if that fixes your problem.

user_122486490
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