Avoid redefinition of alias variable for weak reference in header-file

Question

I have a variable in an header file:

myHeader.h

uint16 dummyVar = 0;
extern const uint16 myVar __attribute__((weak,alias("dummyVar")));

So when I don't link the parts where myVar gets defined, the linker will just give it the value of the symbol dummyVar.

My problem is, that I am working on a Project with a given architecture, where my Header-File myHeader.h is included by several C-Files. Because of that I get multiple definitions of dummyVar . But when I define dummyVar outside of my header it doesnt work anymore for my __attribute__ since dummyVar needs to be defined when it is assigned as an alias.

Is there any way I can work around this without changing the basic architecture of this?

Answer 1

A simple solution would be to to just declare it as follows:

static uint16 dummyVar = 0;