Unable to add below statements in code QMAKE_CXXFLAGS += -std=c++14

Question

I am using chrono library for calculating elapsed time but I am getting below warning.

warning: 'auto' type specifier is a C++11 extension [-Wc++11-extensions]

I am beginner in C++ and don't know how to add

QMAKE_CXXFLAGS += -std=c++14

Any help would be highly appreciated.

No...should we add QMAKE_CXXFLAGS += -std=c++14 line in our .cpp file — sam sivlv, Sep 22 '17 at 21:08
You should add this in your compilation command (`makefile`). How did you compile you program? — James Maa, Sep 22 '17 at 21:09
I am compiling by using below command: g++ chronoprog.cpp -lmpir -o chronoprog — sam sivlv, Sep 22 '17 at 21:10

score 2 · Answer 1 · answered Sep 22 '17 at 21:22

2

IF you are using a qmake project, it should be

CONFIG += c++14

in the project file as mention in an answer to this post: How can I use C++14 features when building qmake projects

answered Sep 22 '17 at 21:22

LeBlue

score 0 · Answer 2 · answered Sep 22 '17 at 21:16

0

You should add the flags in your compiling command:

g++ -std=c++14 chronoprog.cpp -lmpir -o chronoprog

answered Sep 22 '17 at 21:16

James Maa

2 Answers2