Re: [avr-libc-dev] 1.8.1?

[Georg-Johann Lay]

Joerg Wunsch schrieb:
> As Georg-Johann Lay wrote:
>
> > If you use 4.7 with 1.8.0 you'll get a broken toolchain, for example 
> > some linux distros or MHV AVR tools 4.7.2.
>
> Just in order to demonstrate the breakage caused by this, do you
> perchance have a small example that shows the problem?  That way,
> I could make sure it's really fixed afterwards.

As far as I can tell #35407 works as intended.

Look at

$install/avr/lib/tiny-stack
$install/avr/lib/avr25/tiny-stack

there must be crt.o for devices with 8-bit SP and lib.a for these 
devices.  You'll see the lib.a difference in the prologue functions.

Without #35407, e.g. 1.8.0, these directories are empty and the 
respective files ar located one level higher together with the 16-bit SP 
devices, e.g. in

$install/avr/lib
$install/avr/lib/avr25

As far as I understand Dmitry, the missing 50% in #35407 is testing, not 
implementation.

Johann


FYI, the information comes from the 4th column of avr-mcus.def in GCC 
and is used in driver-avr.c:avr_device_to_sp8().  For a description of 
AVR_MCU and mcu_type_s see avr-arch.h.  Notice -msp8 is a multilib 
option as can be seen with avr-gcc -print-multi-lib.