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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: avr-gcc
Date: Wed, 13 Apr 2016 22:42:11 +0200
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	(David Thompson's message of "Tue, 12 Apr 2016 14:21:17 -0400")
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To: "Thompson, David" <dthompson2@worcester.edu>
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"Thompson, David" <dthompson2@worcester.edu> skribis:

> avr-gcc -DHAVE_CONFIG_H -I. -I../../../../avr-libc-2.0.0/avr/lib/avr2
> -I../../..  -I../../../../avr-libc-2.0.0/common
> -I../../../../avr-libc-2.0.0/include -I../../../include
> -I../../../../avr-libc-2.0.0/common
> -I../../../../avr-libc-2.0.0/include -I../../../include -x
> assembler-with-cpp  -mmcu=3Davr2 -D__COMPILING_AVR_LIBC__   -MT abort.o
> -MD -MP -MF .deps/abort.Tpo -c -o abort.o
> ../../../../avr-libc-2.0.0/libc/stdlib/abort.S
> In file included from
> /gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/include/features.h=
:389:0,
>                  from
> /gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/include/limits.h:2=
5,
>                  from ../../../../avr-libc-2.0.0/libc/stdlib/strtol.c:33:
> /gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/include/gnu/stubs.=
h:7:27:
> fatal error: gnu/stubs-32.h: No such file or directory
>  # include <gnu/stubs-32.h>
>                            ^
> compilation terminated.

<gnu/stubs-32.h> is used when building on a 64-bit glibc system in
32-bit mode.  However, our glibc does not provide it currently.

> I don't know why it's including headers from the host system's libc.

Right, that=E2=80=99s a problem.  I would expect it to only include target =
libc
headers.  Could you check C_INCLUDE_PATH and CROSS_CPATH in there?

Note that our =E2=80=98gcc=E2=80=99 package is modified to honor the specia=
l CROSS_CPATH
variable, see gcc-cross-environment-variables.patch.  Maybe the
equivalent thing is missing from avr-gcc?

Good that you=E2=80=99re getting there!

Ludo=E2=80=99.