Compilation errors (OpenCV)

kapabahwuk

Just reinstalled QT and compiled all libs, but could not compile previous working version:
Initializing:
std::vector<std::vectorcv::Point > test {{ { 52 , 2 } , { 51 , 3 };

Errors:

C:\Users\66820\Documents\capture\main.cpp:16: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
std::vector<std::vectorcv::Point > test {{ { 52 , 2 } , { 51 , 3 } ,{ 50 , 3 } , { 49 , 3 } ,{ 48 , 3 } ,{ 47 , 3 } ,{ 46 , 3 } ,{ 45 , 3 } ,{ 44 , 3 } ,{ 43 , 3 } ,{ 42 , 3 } ,{ 41 , 3 } ,{ 40 , 4 } ,{ 39 , 4 } ,{ 38 , 4 } ,{ 37 , 4 } ,{ 36 , 4 } ,{ 35 , 4 } ,{ 34 , 4 } ,{ 33 , 4 } ,{ 32 , 5 } ,{ 31 , 5 } ,{ 30 , 6 } ,{ 29 , 6 } ,{ 28 , 6 } ,{ 27 , 7 } ,{ 26 , 7 } ,{ 25 , 7 } ,{ 24 , 8 }}};

In c++98 must be initialized by constructor, not by '{...}'
how to fix these?

C:\Users\66820\Documents\capture\main.cpp:16: error: no matching function for call to 'std::vector<std::vector<cv::Point_<int> > >::vector(<brace-enclosed initializer list>)'

kapabahwuk

Got clue from open cv forum, they told me I do need to add -std=c++11 to compiler cmdline.
How can I amend pro file accordingly?

ChrisW67

Something like this:

# With C++11 support
greaterThan(QT_MAJOR_VERSION, 4){    
CONFIG += c++11
} else {
QMAKE_CXXFLAGS += -std=c++11
}