stmcubemx convert c to c++

[johannes_hellbeck]

Posted on May 05, 2017 at 20:10

Hello,

When I compile STM32CubeMX generated C file with my IDE ( OpenSTM32 last version)

to

C is ever think ok.

In the Project Explorer I convert to c++.

But when I change main.c

to main.cpp I get an error message “make: ***

http://www.openstm32.org/Drivers/Hans.o

Error 258�?.

Is there a solution available?

Thanks Johannes

• OS windows 10

  Version: Mars.2 Release (4.5.2) STM32L432KU STM32Cube V1.0 Version 4.20.#

[AvaTar]

Posted on May 10, 2017 at 14:21

I think , that will be a good thing  ST, Atollic/AC6 work here together and look for a solution…

The best solution would be if Cube supported C++ out of the box.

Everything else would be just a workaround.

[Tomas Zahradnik]

Posted on May 11, 2017 at 10:23

I have converted C project into C++ and had to solve issue with static objects.

The solution was to add definition for linker in *.ld file:

/* .ctors .dtors are used for c++ constructors/destructors */

.ctors : { PROVIDE(__ctors_start__ = .); KEEP(*(SORT(.ctors.*))) KEEP(*(.ctors)) PROVIDE(__ctors_end__ = .); } >FLASH

.dtors :

{ PROVIDE(__dtors_start__ = .); KEEP(*(SORT(.dtors.*))) KEEP(*(.dtors)) PROVIDE(__dtors_end__ = .); } >FLASH

So, don't forget also for this.

Tomas.

[valentin]

Posted on October 26, 2017 at 04:30

Hmm, can you give an example please?

I've never had any issue with any static objects (static class members? or static functions? or static local variables?)

[Tomas Zahradnik]

Posted on October 29, 2017 at 21:11

Hello Valentin,

It was a long time ago, so I cannot find the right example but in general, it was like:

&sharpinclude 'myclass.hpp'

static MyClass my_object_of_class;

int main()

{

  my_object_of_class.call_method();

}

When I call 'call_method()' of object 'my_object_of_class' which is allocated above main(), without initialization of sections ctors and dtors, it fails. Now I cannot remember if it was necessary static allocation or if it also fails without static.

Tomas

[valentin]

Posted on October 30, 2017 at 20:04

Hmm, interesting. I never had that issue so far. But I will keep this in mind in case I run into problems. Thanks!

[Jeanne Joly]

Posted on January 18, 2018 at 15:31

Hi all,

For your information, we do understand the need for you to generate C++ project and this need is well known internally.

However, for the moment, with the success of STM32CubeMX, we have a lot of requests/suggestions to study and many improvements to integrate.

And the C++ generation project item is not yet under study currently.

Sorry, for the inconvenience it may cause.

BR. Jeanne