C++ example for Cortex-M4 using gnu g++ compiler?

To add a C++ file, this is not straight forward in this case. I don't think there is an option to change a C project to a C/C++ project. If you are just adding a single C++ source file, you can right click on that file, and in Properties > Tool Chain Editor, select the C++ compiler. You then need to go to Settings and enter compatible build options for the C builds. This will only apply to this source file, so isn't very scalable :(

The easiest solution (sorry) is to create a New > Project > C/C++ > C++ Project > CMSIS C/C++ Project, and then copy over the Blinky.c source file. You will need to setup the generated .rteconfig file the same way as it was for the previous project, but that is fairly straight forward from the GUI (and is likely do-once operation).

To add a C++ file, this is not straight forward in this case. I don't think there is an option to change a C project to a C/C++ project. If you are just adding a single C++ source file, you can right click on that file, and in Properties > Tool Chain Editor, select the C++ compiler. You then need to go to Settings and enter compatible build options for the C builds. This will only apply to this source file, so isn't very scalable :(

The easiest solution (sorry) is to create a New > Project > C/C++ > C++ Project > CMSIS C/C++ Project, and then copy over the Blinky.c source file. You will need to setup the generated .rteconfig file the same way as it was for the previous project, but that is fairly straight forward from the GUI (and is likely do-once operation).