Re: External toolchain

From: "Ahsan, Noor" <Noor_Ahsan@mentor.com>
To: <openembedded-devel@lists.openembedded.org>
Subject: Re: External toolchain
Date: Tue, 22 Feb 2011 10:47:01 +0100	[thread overview]
Message-ID: <989A078976CDAD4CB2DC976EEF70E2A5051FA815@eu2-mail.mgc.mentorg.com> (raw)
In-Reply-To: <12689458.696811298366163560.JavaMail.defaultUser@defaultHost>

Hello Luca,

Probably you need to create symbolic links of arm-angstrom-linux-
gnueabi-gcc to arm-none-linux-gnueabi-gcc. OE assumes that the compiler name is arm-angstrom-linux-gnueabi-gcc. You can see the "CC" variable value by take environment of libtool-cross (using -e options) that how OE is creating the name of compiler.

Regards,
Noor

-----Original Message-----
From: openembedded-devel-bounces@lists.openembedded.org [mailto:openembedded-devel-bounces@lists.openembedded.org] On Behalf Of Luca Bolognini
Sent: Tuesday, February 22, 2011 2:16 PM
To: Open Embedded Mailing List
Subject: [oe] External toolchain

Hi,
I would like to use an external toolchain (CodeSourcery2009q1) to 
cross-compile some packages for my beagleboard (more or less the same 
that happens in Arago) and then I expect not to download glibc package 
and cross-compile again libc, libpthread and so on. I would like to use 
the libraries inside my external CodeSourcery SDK.
I followed some 
hints by Denys and Tom ( http://lists.linuxtogo.
org/pipermail/openembedded-devel/2010-April/019521.html ) and I put 

# 
LUCA
TARGET_VENDOR = "-none"
TOOLCHAIN_TYPE ?= "external"

TOOLCHAIN_BRAND ?= "csl"
TOOLCHAIN_PATH = "/opt/ti/codesourcery"

TOOLCHAIN_SYSPATH = "${TOOLCHAIN_PATH}/arm-none-linux-gnueabi"

PATH_prepend = "${TOOLCHAIN_PATH}/bin:"
require 
conf/distro/include/toolchain-external.inc

inside my 
openembedded/conf/distro/angstrom-2008.1.conf

As you know, cross-
compiler provided by CodeSoucery is arm-none-linux-gnueabi-gcc but I 
get the following error with libtool-cross_2.2.6b.bb:
Build 
Configuration:
BB_VERSION        = "1.8.19"
METADATA_BRANCH   = 
"release-2010.12"
METADATA_REVISION = "dec3967"
TARGET_ARCH       = 
"arm"
TARGET_OS         = "linux-gnueabi"
MACHINE           = 
"beagleboard"
DISTRO            = "angstrom"
DISTRO_VERSION    = 
"2010.7-test-20110221"
TARGET_FPU        = "hard"
[...]
| checking for 
arm-angstrom-linux-gnueabi-gcc... arm-angstrom-linux-gnueabi-gcc -
march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -mthumb-
interwork -mno-thumb
| checking whether the C compiler works... no
| 
configure: error: in `/home/bolognini/diskp2/diskp2.4/pure-
oe/build/tmp/work/armv7a-angstrom-linux-gnueabi/libtool-cross-2.2.6b-
r27.1/libtool-2.2.6b':
| configure: error: C compiler cannot create 
executables

Obviously OE doesn't have to find arm-angstrom-linux-
gnueabi-gcc, but why does it search for arm-angstrom-linux-gnueabi-gcc 
instead of arm-none-linux-gnueabi-gcc ?
What's wrong inside angstrom-
2008.1.conf or what am I missing?

Thank you for your support
Luca

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