Linking to RTCS problem (MQX 4.1, C++)

[michael_wahler]

Hi everyone,

I would like to send and receive UDP (or TCP) packets with a C++ application. Since I have not found any other documentation for the networking API, I am copy-pasting parts of the HTTP server example to my C++ code.

The first problem I am running into is that the linker cannot find ipcfg_init_device. Since this symbol is defined in ipcfg.h, which is part of RTCS, I added rtcs.a in the C/C++ Build Settings->Tool Settings->ARM Ltd Windows GCC C++ Linker->Miscellaneous->Other objects. However, this did not help.

My questions are

• What is the correct way of linking with RTCS?
• Are there any good examples for simple TCP/UDP communication with MQX 4.1?

Kind regards

Michael

[Martin_ · Accepted solution]

For the linking RTCS from a C++ source code, make sure you put RTCS include files into extern "C" brackets. Example:

extern "C" {

#include "ipcfg.h"

....

...

}

[michael_wahler]

Thanks! This does the trick.