Re: [PATCH v2 0/7] Add ISAR SDK support

["Maxim Yu. Osipov" <mosipov@ilbers.de>]

Applied to the 'next',

Maxim.
On 06/22/2018 02:40 PM, Maxim Yu. Osipov wrote:
> Hello everybody,
> 
> Changes in v2:
>   - Patches corrected after review
>   - Improved isar-bootstrap separation into host and target parts.
>   - Renamed 'do_isar_task' to 'do_populate_sdk' to harmonize with Deby
> 
> Motivation
> 
> Building applications for targets in ISAR takes a lot of time as they are built under QEMU.
> SDK providing crossbuild environment will help to solve this problem.
> 
> Approach
> 
> Create SDK root file system for host with installed cross-toolchain for target architecture and ability to install already prebuilt
> target binary artifacts. Developer chroots to sdk rootfs and develops applications for target platform.
> 
> Solution
> 
> User manually triggers creation of SDK root filesystem for his target platform by launching the task `do_populate_sdk` for target image, f.e.
> `bitbake -c do_populate_sdk multiconfig:${MACHINE}-${DISTRO}:isar-image-base`.
> 
> The resulting SDK rootfs is located under `tmp/work/${DISTRO}-${DISTRO_ARCH}/sdkchroot-${HOST_DISTRO}-${HOST_ARCH}/rootfs`.
> SDK rootfs directory `/isar-apt` contains the copy of isar-apt repo with locally prebuilt target debian packages (for <HOST_DISTRO>).
> One may chroot to SDK and install required target packages with the help of `apt-get install <package_name>:<DISTRO_ARCH>` command.
> 
> Limitation
> 
> Only Debian Stretch for SDK root filesystem is supported as only Stretch provides crossbuild environment by default.
> (Debian Jessie requires some additional preconfiguration steps see https://wiki.debian.org/CrossToolchains#Installation for details).
> 
> Example
> 
>   - Trigger creation of SDK root filesystem
> 
> bitbake -c do_populate_sdk multiconfig:qemuarm-stretch:isar-image-base
> 
>   - Mount the following directories in chroot by passing resulting rootfs as an argument to the script `mount_chroot.sh`:
> 
> cat scripts/mount_chroot.sh
> #!/bin/sh
> 
> set -e
> 
> mount /tmp     $1/tmp                 -o bind
> mount proc     $1/proc    -t proc     -o nosuid,noexec,nodev
> mount sysfs    $1/sys     -t sysfs    -o nosuid,noexec,nodev
> mount devtmpfs $1/dev     -t devtmpfs -o mode=0755,nosuid
> mount devpts   $1/dev/pts -t devpts   -o gid=5,mode=620
> mount tmpfs    $1/dev/shm -t tmpfs    -o rw,seclabel,nosuid,nodev
> 
> $ sudo scripts/mount_chroot.sh ../build/tmp/work/debian-stretch-armhf/sdkchroot-debian-stretch-amd64/rootfs
> 
>   - chroot to isar SDK rootfs:
> 
> $ sudo chroot ../build/tmp/work/debian-stretch-armhf/sdkchroot-debian-stretch-amd64/rootfs
> 
>   - Check that cross toolchains are installed
> 
> 
> :~# dpkg -l | grep crossbuild-essential-armhf
> ii  crossbuild-essential-armhf           12.3                   all          Informational list of cross-build-essential packages
> 
> 
>   - Install needed prebuilt target packages.
> 
> 
> :~# apt-get install libhello-dev:armhf
> 
> 
>   - Check the contents of the installed target package
> 
> :~# dpkg -L libhello-dev
> /.
> /usr
> /usr/include
> /usr/include/hello.h
> /usr/lib
> /usr/lib/arm-linux-gnueabihf
> /usr/lib/arm-linux-gnueabihf/libhello.a
> /usr/lib/arm-linux-gnueabihf/libhello.la
> /usr/share
> /usr/share/doc
> /usr/share/doc/libhello-dev
> /usr/share/doc/libhello-dev/changelog.gz
> /usr/share/doc/libhello-dev/copyright
> ~#
> 
> Kind regards,
> Maxim.
> 
> 
> 
> Alexander Smirnov (2):
>    isar-bootstrap: Move common part to include.
>    isar-bootstrap: Add host architecture support
> 
> Maxim Yu. Osipov (5):
>    isar-bootstrap-helper: Add option --copyisarapt to
>      setup_root_file_system()
>    sdkchroot: Added recipe-devel to create SDK root filesystem
>    meta/class/image: Add populate_sdk task to trigger SDK rootfs creation
>    scripts: Add helper scripts to mount/umount chroot directory
>    doc: Add description of ISAR SDK root filesystem creation
> 
>   doc/user_manual.md                                 | 95 ++++++++++++++++++++++
>   meta/classes/image.bbclass                         | 17 +++-
>   meta/classes/isar-bootstrap-helper.bbclass         | 27 +++++-
>   .../isar-bootstrap/isar-bootstrap-host.bb          | 75 +++++++++++++++++
>   .../isar-bootstrap/isar-bootstrap-target.bb        | 74 +++++++++++++++++
>   .../{isar-bootstrap.bb => isar-bootstrap.inc}      | 83 +++----------------
>   meta/recipes-devtools/buildchroot/buildchroot.bb   |  2 +-
>   meta/recipes-devtools/isar-apt/isar-apt-host.bb    | 31 +++++++
>   .../sdkchroot/files/configscript.sh                | 14 ++++
>   meta/recipes-devtools/sdkchroot/sdkchroot.bb       | 47 +++++++++++
>   scripts/mount_chroot.sh                            | 10 +++
>   scripts/umount_chroot.sh                           |  8 ++
>   12 files changed, 408 insertions(+), 75 deletions(-)
>   create mode 100644 meta/recipes-core/isar-bootstrap/isar-bootstrap-host.bb
>   create mode 100644 meta/recipes-core/isar-bootstrap/isar-bootstrap-target.bb
>   rename meta/recipes-core/isar-bootstrap/{isar-bootstrap.bb => isar-bootstrap.inc} (68%)
>   create mode 100644 meta/recipes-devtools/isar-apt/isar-apt-host.bb
>   create mode 100644 meta/recipes-devtools/sdkchroot/files/configscript.sh
>   create mode 100644 meta/recipes-devtools/sdkchroot/sdkchroot.bb
>   create mode 100755 scripts/mount_chroot.sh
>   create mode 100755 scripts/umount_chroot.sh
> 


-- 
Maxim Osipov
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