问题:

I want to execute a following code.

#include  #include   void output() {     std::cout << "Hello World" << std::endl; }  int main() {     std::thread t(output);     t.join();      return 0; }

I can't execute it.

Qt Creator outputs terminate called after throwing an instance of 'std::system_error' what(): Operation not permitted

However I can execute on the terminal using the option of -pthread. Could you tell me how to use the option of -pthread in Qt Creator?

My developing environment is Ubuntu(12.04), g++4.6.3, Qt Creator(2.4.1).

Thank you.

回答1:

You also need to link against -pthread. If you use g++ main.cpp -std=c++0x -pthread you are doing all that in one step, so it works correctly. To make Qt do the correct things, add the following to your project file:

QMAKE_CXXFLAGS += -std=c++0x -pthread  LIBS += -pthread

回答2:

This works for me:

TEMPLATE = app TARGET =  DEPENDPATH += . INCLUDEPATH += .  # Input SOURCES += test.cpp  QMAKE_CXXFLAGS += -std=gnu++0x -pthread QMAKE_CFLAGS += -std=gnu++0x -pthread

Your example compiles and executes correctly with the above .pro file on my system.

Try save your example as test.cpp, and the above as project.pro in same directory. Then type:

$ qmake $ make $ ./project Hello World

回答3:

Add your command line arguments here: http://doc.qt.nokia.com/qtcreator-2.4/creator-run-settings.html

转载请标明出处:How to use pthread on Qt Creator

文章来源: How to use pthread on Qt Creator

标签

pthread