Re: [RFC] [PATCH 0/9] Initial cross-compilation support

[Henning Schild <henning.schild@siemens.com>]

Cool, i will look into that for an arm image i am working on for some
time now. That might result on some more "hands-on" comments.

Henning

Am Wed, 13 Jun 2018 15:07:58 +0200
schrieb Alexander Smirnov <asmirnov@ilbers.de>:

> Hi all,
> 
> this series introduces basic cross-compilation support for Isar. The
> implementation is based around new entity - buildchroot-cross, which
> is quite similar to original buildchroot, but has host architecture.
> 
> This series tested for the following configuration only:
> 
>  $ bitbake multiconfig:qemui386
> 
> In this build:
>  - libhello is cross-compiled
>  - example-hello is compiled traditionally (but it's successfully
> linked with libhello)
> 
> TODO list:
>  - Depending on the target architecture, various host tools should be
> installed. For example binutils package has the following names:
>    * binutils
>    * binutils-x86-64-linux-gnu
>    * binutils-arm-linux-gnueabihf
>  - Cross-dependency installation. This topic is still open for me
> because 'mk-build-deps' tool doesn't work here correctly. For example
> package depends on binutils, but instead of installation of
> 'binutils-arm-linux-gnueabihf' it tries to install 'binutils:armhf'
> and ruins the rootfs.
> 
> So, as usually, comments and suggestions are welcome :-)
> 
> With best redgards,
> Alex
> 
> Alexander Smirnov (9):
>   isar-bootstrap: Add routin to determine host arch
>   isar-bootstrap: Move common part to include
>   isar-bootstrap: Add host architecture support
>   isar-bootstrap-helper: Add parameter to set arch
>   buildchroot-cross: Initial implementation
>   classes/dpkg*: Relocate dependency from buildchroot
>   classes/dpkg*: Drop hardcoded buildchroot blobs
>   classes/dpkg-cross: Initial implementation
>   [FOR TESTING] libhello: Switch to cross compilation
> 
>  meta-isar/recipes-app/libhello/libhello.bb         |   2 +-
>  meta/classes/dpkg-base.bbclass                     |  17 +-
>  meta/classes/dpkg-cross.bbclass                    |  15 ++
>  meta/classes/dpkg-raw.bbclass                      |   7 +-
>  meta/classes/dpkg.bbclass                          |   7 +-
>  meta/classes/image.bbclass                         |   2 +-
>  meta/classes/isar-bootstrap-helper.bbclass         |  13 +-
>  meta/conf/isar-bitbake.conf                        |   1 +
>  .../isar-bootstrap/isar-bootstrap-host.bb          |  44 ++++
>  .../isar-bootstrap/isar-bootstrap-target.bb        |  44 ++++
>  meta/recipes-core/isar-bootstrap/isar-bootstrap.bb | 259
> --------------------- .../recipes-core/isar-bootstrap/isar-bootstrap.inc
> | 223
> ++++++++++++++++++ .../buildchroot/buildchroot-cross.bb
> |  53 +++++ meta/recipes-devtools/buildchroot/buildchroot.bb   |   2
> +- .../buildchroot/files/build-cross.sh               |  29 +++ 15
> files changed, 443 insertions(+), 275 deletions(-) create mode 100644
> meta/classes/dpkg-cross.bbclass create mode 100644
> meta/recipes-core/isar-bootstrap/isar-bootstrap-host.bb create mode
> 100644 meta/recipes-core/isar-bootstrap/isar-bootstrap-target.bb
> delete mode 100644 meta/recipes-core/isar-bootstrap/isar-bootstrap.bb
> create mode 100644
> meta/recipes-core/isar-bootstrap/isar-bootstrap.inc create mode
> 100644 meta/recipes-devtools/buildchroot/buildchroot-cross.bb create
> mode 100644 meta/recipes-devtools/buildchroot/files/build-cross.sh
>