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Zephyr project on STM32

   Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
  • Install host dependencies.
  • Import toolchain and SDK.
  • Create, configure, build and manage apps.
  • Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench

System Workbench for STM32

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You are viewing a reply to Problem with "undefined reference to" [SOLVED]  

Problem with "undefined reference to"

Posted by dautrevaux on 2018-08-16 10:38 France

Hi David,

The problem here is that the math_helper.c file is a C program and your main.cpp is obviously a C++ program. You must slightly modify the math_helper.h file so that it declares its functions correctly to be called from C++: You should add, just after line 47 in math_helper.h:
#ifdef __cplusplus
extern "C" {
#endif
and just before the final #endif
#ifdef __cplusplus
}
#endif

so that your functions are properly declared as C functions when math_helper.h is included in main.cpp.

Hope this helps,

Bernard (Ac6)

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