4.5.13. __attribute__((weakref("target")))
This variable attribute marks a variable declaration as an
alias that does not by itself require a definition to be given for
the target symbol.
Note
This variable attribute is a GNU compiler extension supported
by the ARM compiler.
__attribute__((weakref("target")))
Where target
In the following example, a is assigned
the value of y through a weak reference:
extern int y;
static int x __attribute__((weakref("y")));
void foo (void)
{
int a = x;
...
}
This attribute can only be used on variables that are declared
as static.
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