# How to solve "error Qt requires a C++11 compiler and yours does not seem to be that" issue when building Tiled using Qt Creator on windows 7?
**URL:** https://discourse.mapeditor.org/t/how-to-solve-error-qt-requires-a-c-11-compiler-and-yours-does-not-seem-to-be-that-issue-when-building-tiled-using-qt-creator-on-windows-7/2727
**Category:** Questions
**Created:** [September 26, 2017, 6:12pm UTC](https://discourse.mapeditor.org/t/how-to-solve-error-qt-requires-a-c-11-compiler-and-yours-does-not-seem-to-be-that-issue-when-building-tiled-using-qt-creator-on-windows-7/2727 "2017-09-26T18:12:52Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Keshav\_Sharma](https://discourse.mapeditor.org/u/Keshav_Sharma)
#### Post date: [September 26, 2017, 6:12pm UTC](https://discourse.mapeditor.org/t/how-to-solve-error-qt-requires-a-c-11-compiler-and-yours-does-not-seem-to-be-that-issue-when-building-tiled-using-qt-creator-on-windows-7/2727/1 "2017-09-26T18:12:52Z")
Im running windows 7 32 bit and latest Qt Version, i followed the tiled wiki on github regarding building the source code and after clicking on .qbs file and building it, i received about 37 errors including this
> # error Qt requires a C++11 compiler and yours does not seem to be that
Several google search suggested me to add `QMAKE_CXXFLAGS += -std=c++11` line in tiled.pro file but still it doesn’t work and issue remains the same, anyone here who can please help me ?
EXTRA UPDATE :
I did some blind checks and ran the following code via a completely new project
```
#include
int main(){
#if __cplusplus==201402L
std::cout << "C++14" << std::endl;
#elif __cplusplus==201103L
std::cout << "C++11" << std::endl;
#else
std::cout << "C++" << std::endl;
#endif
return 0;
}
```
The output was “C++11”, idk if this will provide much information to you or not
---
### Author:  [@bjorn](https://discourse.mapeditor.org/u/bjorn)
#### Post date: [September 26, 2017, 8:15pm UTC](https://discourse.mapeditor.org/t/how-to-solve-error-qt-requires-a-c-11-compiler-and-yours-does-not-seem-to-be-that-issue-when-building-tiled-using-qt-creator-on-windows-7/2727/2 "2017-09-26T20:15:52Z")
Which compiler are you using? Tiled is compiling fine against Qt 5.8 with either MinGW or VS 2013, but so far I have not yet moved to Qt 5.9 because of problems with zlib (seems like they removed `QtZlib/zlib.h` in the MinGW version of Qt 5.9).
I have not encountered any issues with C++11, though.
Note that `tiled.pro` doesn’t work on Windows, you need to use `tiled.qbs`. But both projects are already C++11-enabled since a long time.