On 18 August 2014 11:35, Joey Ye <joey.ye...@gmail.com> wrote: > Joern, there is https://sourceware.org/ml/newlib/2014/msg00166.html, > which is already in newlib mainline. I think it solves the same issue > in a slight different approach. > > Does it work for you?
No, this is completely besides the point. avr-libc has had manual printf variant selection (requiring -u and -l options to the linker) for quite some time. But this requirement for manual selection means that lots of dejagnu tests fail; it also means that a lot of software fails to work properly out of the box. The point of my patch is to do an automatic selection inasmuch as this is possible with gcc noting where floating point is being used from looking at *printf* / *scanf* calls in isolation and passing the information gained to the linker to figure out which implementation to use.
