LKBEN11208: How to use c++ 11 with Qt creator


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LKB | Created: 02/04/2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False

Author: Wim Peeters - Keskon GmbH & Co. KG


Symptom

Qtcreator will not use the new verion of c++ 11 (also called C++ 0x)

Cause

This is the default

Solution

To make your compiler compile with c++ 11 syntax you need to specify a compiler flag. This has to be added to your pro file.

...
QMAKE_CXXFLAGS += -std=c++11
...

Save your pro file and compile again. e.g. by using the new C++ 11  keyword auto.

...
    auto i = 8;

    i = i+ 8;
...

This should now compile without errors.

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.

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