Re: [avr-gcc-list] How to use pgmspace.h in a library source without warning?

[Thomas D. Dean]

On 06/07/13 09:53, Georg-Johann Lay wrote:
> Suppose the following include in a library source.c:
>
> #include <avr/pgmspace.h>
>
> and the source compiled with, e.g. -mmcu=avr5 or -mmcu=avr35 etc.
>
> This throws a warning like:
>
> $ avr-gcc -mmcu=avr5 source.c -c
>
> In file included from INSTALL/avr/include/avr/pgmspace.h:88:0,
>                   from source.c:1:
> INSTALL/avr/include/avr/io.h:428:6: warning: #warning "device type not
> defined" [-Wcpp]
>
> Is there a way to build library modules that use pgmspace functionality
> without such annoying warning?

Look at avr/io.h, where the warning is issued.  avr5 is not one of the 
defined device types.

You have to use a specific device.

Tom Dean