How to enable C++11/C++0x support in Eclipse CDT?

Question

Eclipse 3.7.1 CDT 1.4.1 GCC 4.6.2

This is an example of a piece of C++11 code:

auto text = std::unique_ptr(new char[len]);

Answer 1

I had a similar problem using Eclipse C++ 2019-03 for a mixed C and C++ project that used std::optional and std::swap. What worked for me was this. In the project Properties->C/C++ Build->Settings->Tool Settings->Cross G++ Compiler, remove -std=gnu++17 from Miscellaneous and put it in Dialect->Other Dialect Flags instead.