I'm trying to get my first project compiled. main() function with a call to a simple, non fancy GPIO function, void GPIO_function( void ) in file GPIO_test.c. Header file included as #include "GPIO_test.h". Include path added via the project properties "Paths and Symbols". I copied the file GPIO_test.c in the /src folder of the project. I can insert the function with code completion in the source code. BUT I get an undefined reference to `GPIO_function()' error from the linker. Any hints are highly appreciated!
Many thanks and greetings