Re: [PATCH L-C v4 0/5] linux-custom recipe rework

[Gylstorff Quirin <quirin.gylstorff@siemens.com>]

On 11/25/19 5:04 PM, Cedric Hombourger wrote:
> The Linux kernel is packaged a bit differently between Debian variants
> and in particular for the perf package(s) in Debian vs Ubuntu. Since
> there is no way the kernel build scripts would ever get distro specific
> support for building more than the kernel and headers, we need our own
> build/packaging scripts.
> 
> Version 4 of this changeset was tested against ci_build.sh and some images were
> booted on hardware available (including the de0-nano-soc). No regressions were
> detected (to date).
> 
> This version is still relying on qemu-user-static being in the buildchroot-host
> I am unfortunetely getting little time to work on removing this dependency (for
> the avoidance of doubt, I understand the views of the maintainers). The purpose
> of this submission is to share progress.
> 
> Changes compared to v3:
>    Ship device trees where they can be found (checked on de0-nano-soc)
>    Initialize LOCAL_VERSION from the recipe PV & PR
> 
> Changes compared to v2:
>    Rework custom_kernel.md
>    Compare PV+/-LOCAL_VERSION and kernelrelease string
> 
> Changes compared to v1:
>    Add missing reference to KERNEL_DEFCONFIG in requirements list
>    Amend postinst/postrm scripts according to CONFIG_BLK_DEV_INITRD
>    Remove (unused) pre/post host hooks from debian/isar scripts
>    Add preinst/prerm scripts shipped by the kernel
>    Align {pre,post}{inst,rm} scripts with upstream
>    Add ${BASE_DISTRO} to Build-Profiles
>    Add nolibcdev to Build-Profiles if KERNEL_LIBC_DEV_DEPLOY != 1
>    Only build the libc-dev packages if it is needed
> 
> 
> Cedric Hombourger (5):
>    recipes-kernel/linux: make KERNEL_DEFCONFIG support in-tree defconfigs
>    linux-mainline: fix stripping of .0 from the kernel version
>    linux-mainline: update from 4.19.0 to 4.19.80
>    buildchroot-host: install qemu-static to support hybrid cross-compiles
>    linux-custom: rewrite to no longer depend on the kernel's builddeb
> 
>   doc/custom_kernel.md                          |  80 +++++++
>   ...ne_4.19.0.bb => linux-mainline_4.19.80.bb} |   4 +-
>   .../buildchroot/buildchroot-host.bb           |   6 +
>   .../linux/files/build-kernel.sh               | 129 -----------
>   meta/recipes-kernel/linux/files/debian/compat |   1 +
>   .../linux/files/debian/control.tmpl           |  37 +++
>   .../linux/files/debian/isar/build.tmpl        |  45 ++++
>   .../linux/files/debian/isar/clean.tmpl        |  21 ++
>   .../linux/files/debian/isar/common.tmpl       |  50 ++++
>   .../linux/files/debian/isar/install.tmpl      | 213 ++++++++++++++++++
>   .../linux/files/debian/isar/version.cfg.tmpl  |   2 +
>   .../files/debian/linux-image.postinst.tmpl    |  29 +++
>   .../files/debian/linux-image.postrm.tmpl      |  35 +++
>   .../files/debian/linux-image.preinst.tmpl     |  25 ++
>   .../linux/files/debian/linux-image.prerm.tmpl |  21 ++
>   .../linux/files/debian/rules.tmpl             |  39 ++++
>   meta/recipes-kernel/linux/linux-custom.inc    | 209 ++++++++++++-----
>   17 files changed, 761 insertions(+), 185 deletions(-)
>   create mode 100644 doc/custom_kernel.md
>   rename meta-isar/recipes-kernel/linux/{linux-mainline_4.19.0.bb => linux-mainline_4.19.80.bb} (73%)
>   delete mode 100644 meta/recipes-kernel/linux/files/build-kernel.sh
>   create mode 100644 meta/recipes-kernel/linux/files/debian/compat
>   create mode 100644 meta/recipes-kernel/linux/files/debian/control.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/isar/build.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/isar/clean.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/isar/common.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/isar/install.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/isar/version.cfg.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/linux-image.postinst.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/linux-image.postrm.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/linux-image.preinst.tmpl
>   create mode 100644 meta/recipes-kernel/linux/files/debian/linux-image.prerm.tmpl
>   create mode 100755 meta/recipes-kernel/linux/files/debian/rules.tmpl
> 

I tested this build with isar-cip-core[1] and the iwg20m build fails as 
it uses a 4.4.X kernel. ARM builds with Kernel version 4.4 don't copy 
the zImage to the build directory(build-full/.). The image stays in 
arch/arm/boot/.

[1]: https://gitlab.com/cip-project/cip-core/isar-cip-core

Kind regards
	Quirin