From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Sat, 06 Feb 2021 14:51:08 +0100
Subject: [Buildroot] [PATCH 24/25] support/config-fragments/autobuild:
 use Bootlin toolchain for Xtensa uclibc
References: <20210202225339.2157480-1-thomas.petazzoni@bootlin.com>
 <20210202225339.2157480-25-thomas.petazzoni@bootlin.com>
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To: buildroot@busybox.net

Am Tue, 02 Feb 2021 23:53:37 +0100 schrieb Thomas Petazzoni:

> --- /dev/null
> +++ b/support/config-fragments/autobuild/bootlin-xtensa-uclibc.config
> @@ -0,0 +1,3 @@
> +BR2_xtensa=y
> +BR2_TOOLCHAIN_EXTERNAL=y
> +BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_XTENSA_LX60_UCLIBC_STABLE=y

Hi Thomas,

this toolchains breaks building libmicrohttpd:
http://autobuild.buildroot.net/?reason=libmicrohttpd-0.9.72

"mhd_byteorder.h:161:2: error: #error Configure detected big endian byte 
order but headers specify different byte order"

because gcc describes itself as little endian:

$ output/host/bin/xtensa-linux-gcc -E -dD -xc /dev/null | grep BYTE
#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__

although the defconfig is big endian

$ grep ENDIAN .config
BR2_ENDIAN="BIG"

Regards, Bernd