[OE-core] Generating a movable SDK

[Steve English]

On Wed, Jun 20, 2012 at 7:03 AM, Tasslehoff Kjappfot <tasskjapp at gmail.com>wrote:

> On 06/19/2012 10:33 PM, Khem Raj wrote:
>
>> Sdk is not install time relocatable yet there is a feature enhancement
>> request in yo to bugzilla for the same
>>
>>  That request is mine, I think. I have gotten around this by making
> /usr/local/oecore-i686 a symlink to where I want to keep the toolchain (in
> a vcs). Works like a charm.
>

I've got it to run by:
1. Changing the dynamic loader to the system loader and making RPATH
directives use relative paths in the elf files in:
*
x86_64-angstromsdk-linux/usr/libexec/armv7a-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/4.5.4/
* x86_64-angstromsdk-linux/usr/bin/armv7a-angstrom-linux-gnueabi

with patchelf (http://nixos.org/patchelf.html):

for x in *; do echo $x; patchelf --set-interpreter
/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 $x; patchelf --set-rpath
"\$ORIGIN/../../lib/armv7a-angstrom-linux-gnueabi/:\$ORIGIN/../../../lib/:\$ORIGIN/../../lib"
$x; done

2. Making the symlinks in
x86_64-angstromsdk-linux/usr/libexec/armv7a-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/4.5.4/
use relative paths:

x86_64-angstromsdk-linux/usr/libexec/armv7a-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/4.5.4$
cat tweak_target.sh
#!/bin/bash
FILE=`basename $1`
ln -f -s ../../../../../bin/armv7a-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-$FILE
$FILE
x86_64-angstromsdk-linux/usr/libexec/armv7a-angstrom-linux-gnueabi/gcc/arm-angstrom-linux-gnueabi/4.5.4$
find . -type l -exec ./tweak_target.sh {} \;

This feels like a rather unpleasant hack so I'm going to use the
codesourcery compiler for now, but this does appear to work.

Thanks,

Steve
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