From mboxrd@z Thu Jan  1 00:00:00 1970
From: Danny Milosavljevic <dannym@scratchpost.org>
Subject: Re: [PATCH 2/5] gnu: Add avr-gcc.
Date: Tue, 9 Aug 2016 21:22:57 +0200
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To: Ludovic =?UTF-8?B?Q291cnTDqHM=?= <ludo@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>

Hi,

hmm, does avr-gcc work for anyone on Guix?

I tried to compile a simple Arduino project and I get:

/home/dannym/.guix-profile/bin/avr-g++ -x c++ -include Arduino.h -MMD -c -mmcu=atmega32u4 -DF_CPU=16000000L -DARDUINO=100 -DARDUINO_ARCH_AVR -D__PROG_TYPES_COMPAT__ -Iarduino-1.6.10/hardware/arduino/avr/cores/arduino -Iarduino-1.6.10/hardware/arduino/avr/variants/leonardo     -Iarduino-1.6.10/hardware/arduino/avr/libraries/SPI/src -Wall -ffunction-sections -fdata-sections -Os -DUSB_VID=0x2341 -DUSB_PID=0x8036 -fno-exceptions  main.ino -o build-leonardo/main.ino.o
In file included from /home/dannym/.guix-profile/include/features.h:389:0,
                 from /home/dannym/.guix-profile/include/stdlib.h:24,
                 from arduino-1.6.10/hardware/arduino/avr/cores/arduino/Arduino.h:23,
                 from <command-line>:0:
/home/dannym/.guix-profile/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
compilation terminated.

As you can see it tries to include the host system headers - which will not work.

I have the newest Git Guix.