[avr-libc-dev] Re: [avr-gcc-list] set_sleep_mode and tiny2313/26

[E. Weddington]

akibow wrote:

> Is "Bug-tracker" here?
> https://savannah.nongnu.org/bugs/?func=additem&group=avr-libc
> I'll register it.
>
>  
Yes, that's the one.

> I found a problem about "Busy-wait delay loops".
> Document says to define F_CPU ,
> write "#define F_CPU 1000000UL  // 1 MHz"
> But it makes error on compiling when using makefiles that is 
> produced by Mfile.
> By default, makefile has following definition.
> F_CPU = 10000000
> CDEFS = -DF_CPU=$(F_CPU)UL
> So if #define F_CPU is placed on our source file, double-definition 
> error may occur. It should be written in documentation.
>
>  
No, the solution is to not double-define it. Do not place a definition 
in your source AND define it on the command line via a makefile.
But this sounds like a seperate issue from the sleep stuff.