Re: [PATCH 2/5] gnu: Add avr-gcc.

[Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>]

Danny Milosavljevic <dannym@scratchpost.org> writes:

>> Did you install the “avr-toolchain” package or just the “avr-gcc”? 
>
> I have installed the package "avr-toolchain". The program "avr-gcc" is in my profile but I think it was not from the package avr-gcc.
>
> $ ls -l /home/dannym/.guix-profile/bin/avr-gcc
> lrwxrwxrwx 143 root guixbuild 69  1. Jan 1970  /home/dannym/.guix-profile/bin/avr-gcc -> /gnu/store/lhy6jlpwf92yknmfai3675lmr8bhc4jf-avr-gcc-5.3.0/bin/avr-gcc
> $ guix package -r avr-gcc
> nothing to be done
> $ ls -l /home/dannym/.guix-profile/bin/avr-gcc
> lrwxrwxrwx 143 root guixbuild 69  1. Jan 1970  /home/dannym/.guix-profile/bin/avr-gcc -> /gnu/store/lhy6jlpwf92yknmfai3675lmr8bhc4jf-avr-gcc-5.3.0/bin/avr-gcc
>
> I've read through the mailing list but even the "-D__x86_64__" hack doesn't work anymore. Hmm...
>
>> Should application setup for individual applications also be added to the manual?
>
> In general yes - but I think avr-gcc is special in that it really doesn't need host system stuff at all. There should be no configuration necessary. (It is necessary, but it shouldn't be)
>
> Also, I manually added avr/include and avr/lib as a workaround. This mostly works. However, when linking I get:

I’m pretty sure I didn’t have to do this.  Instead it was sufficient to
set a couple of environment variables.  The effect is the same, though.

> ...
> avr-ld: cannot find crtatmega32u4.o: No such file or directory
> avr-ld: cannot find -latmega32u4
>
> And indeed this crt doesn't exist at all.

I encountered the same issue last time I used avr-gcc.  This hasn’t
always been like this.  If I recall correctly the names of the crt files
changed after we enabled multilib support.

Maybe Dave knows more about this?

~~ Ricardo