Re: [PATCH 0/6] Evolve SDK to chroot-free usage

[Jan Kiszka <jan.kiszka@web.de>]

On 28.03.20 00:48, Christopher Larson wrote:
> This series seems like a definite improvement, but I'd suggest
> explicitly noting in the README that once you've run the relocate-sdk.sh
> script, the second not recommended option of entering the chroot will no
> longer function due to the changed interpreter paths.

Correct. But we can enhance the relocation script so that it is also
able to restore the chroot mode. At least as long as we support both
modes, there is likely value in this. Will adjust it and the README.

Thanks,
Jan

>
> On Sun, Mar 22, 2020 at 1:37 AM Jan Kiszka <jan.kiszka@siemens.com
> <mailto:jan.kiszka@siemens.com>> wrote:
>
>     Currently, our SDK can primarily be used by chroot'ing into it, taking
>     the to-be-built project with you (bind mount etc.). This was enough for
>     a start but we can do better.
>
>     This series enhance the SDK to become usage as a normal cross-toolchain
>     on your host system. For that purpose, we add a script that relocates
>     the toolchain after installation, adjust binary search paths and
>     sysroot. So, the only remaining difference to a yocto or buildroot
>     toolchain is the need to run the relocation script once after unpacking
>     the SDK.
>
>     The series furthermore allows to customize the SDK content via the
>     image-generating layer.
>
>     The series (together with all other pending patching of mine) can also
>     be found at https://github.com/siemens/isar/commits/jan/queue.
>
>     While I already shrunk the SDK a bit by removing the now obsolete
>     isar-apt repo, I suspect we could further reduce the deployment size by
>     dropping chroot support completely, only including the compiler and
>     their library dependencies. OTOH, sdk-debian-buster-arm64.tar.xz is now
>     142M here, unpacked 680M, while ARM's
>     gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz has
>     260M packed and 1.5G(!) unpacked. So we are either not really off or are
>     still missing something.
>
>     Jan
>
>     Jan Kiszka (6):
>        sdk: Add support for adding self-defined sdk packages
>        sdk: Make all links in the SDK chroot relative
>        sdk: Add script to relocate SDK
>        sdk: Do not ship the isar-apt repo
>        sdk: Inject sysroot path when calling relocated toolchain
>        sdk: Update README.sdk
>
>       doc/user_manual.md                                 |  1 +
>       meta/classes/image-sdk-extension.bbclass           | 28 ++++++++-
>       meta/recipes-devtools/sdkchroot/files/README.sdk   | 66
>     ++++++++++------------
>       .../sdkchroot/files/relocate-sdk.sh                | 32 +++++++++++
>       meta/recipes-devtools/sdkchroot/sdkchroot.bb
>     <http://sdkchroot.bb>       | 35 ++++++------
>       5 files changed, 108 insertions(+), 54 deletions(-)
>       create mode 100755
>     meta/recipes-devtools/sdkchroot/files/relocate-sdk.sh
>
>     --
>     2.16.4
>
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>
> --
> Christopher Larson
> kergoth at gmail dot com
> Founder - BitBake, OpenEmbedded, OpenZaurus
> Senior Software Engineer, Mentor Graphics