Difference between revisions of "Building the Yocto BSP (XUELK)"
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bitbake <target-image-name> -c populate-sdk | bitbake <target-image-name> -c populate-sdk | ||
</pre> | </pre> | ||
| − | Again, replace <code><target-image-name></code> with one of the images listed | + | Again, replace <code><target-image-name></code> with one of the images listed [[#Quick reference|here]]. |
=== Build additional packages === | === Build additional packages === | ||
Revision as of 10:27, 21 September 2017
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 As the XELK kit is based on Yocto, the implementation of the MVM follows the approach described here. As such, the reading of this section is highly recommended. |
Contents
History[edit | edit source]
| Version | Date | XUELK version | Notes |
|---|---|---|---|
| December 2016 | XUELK 1.1.0 | ||
| 1.2.0 | May 2017 | XUELK 1.2.0 | |
| 2.0.0 | Sep 2017 | XUELK 2.0.0 |
Quick reference[edit | edit source]
| Repository | BSP Manifest | Yocto BSP Layer | BSP Manifest | Yocto BSP Layer |
|---|---|---|---|---|
| URL | git@git.dave.eu:lynx/lynx-bsp.git | git@git.dave.eu:lynx/meta-lynx.git | git@git.dave.eu:lynx/lynx-bsp.git | git@git.dave.eu:lynx/meta-lynx.git |
| stable branch | lynx-fido | lynx-fido | lynx-krogoth | lynx-krogoth |
| stable tag | xuelk-1.2.0 | xuelk-1.2.0 | xuelk-2.0.0 | xuelk-2.0.0 |
| Name | Description |
|---|---|
| lynx-image-qt5 | QT5.x support |
| lynx-image-devel | minimal for development/debugging image |
| lynx-image-networking | based on lynx-image-devel plus networking tools |
Introduction[edit | edit source]
This is a quickstart guide to build Yocto BSP for Axel ULite SOM and SBC Lynx, to rebuild the binaries (u-boot, linux kernel, root file system) provided with XUELK releases.
For more information regarding Yocto build system, go to its dedicated category page
Build System prerequisites[edit | edit source]
XUELK MVM is already configured to build this Yocto version/configuration, however, users typically don't use a VirtualBox VM for Yocto builds for performance reasons.
You can refer to Yocto manual setup section for a list of supported Linux distribution and their configuration to create your own build environment on your favorite distribution.
Build the XUELK Yocto BSP[edit | edit source]
Initialize the build environment[edit | edit source]
XUELK Yocto BSP uses git-repo tool to fetch all the required git repositories to build
dvdk@dvdk-vm:~/lynx$ curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > repo dvdk@dvdk-vm:~/lynx$ chmod a+x repo dvdk@dvdk-vm:~/lynx$ ./repo init -u git@git.dave.eu:lynx/lynx-bsp.git -b lynx-fido dvdk@dvdk-vm:~/lynx$ ./repo sync
Build the Yocto BSP image[edit | edit source]
Please note that even the basic root file system requires a few hours to build on a mid/hi range desktop (4-6 cores, 8-12 GiB RAM) also depending on your Internet connection speed (all sources are fetched from the network). Nearly 20GiB of disk space is required for the build. Moreover, building inside the DVDK adds some overhead, since the performances of a virtual machine are reduced if compared to the physical hardware. Thus, it's recommended to check the hardware capabilities of the host system and, when building with Yocto is required, developers should consider the following options:
- migrating the build system to a physical machine
- assuming that the host system has the required resources, extending the hardware capabilities of the default DVDK (eg: adding more cores and disk space)
Once completed the initialization phase, developers can launch the Yocto image build process with the following commands:
dvdk@dvdk-vm:~/lynx$ DISTRO=fsl-imx-fb MACHINE=sbc-lynx source lynx-setup-release.sh -b build-fb -e fb dvdk@dvdk-vm:~/lynx/build$ bitbake lynx-image-networking
The resulting files (kernel, devicetree and u-boot binaries, plus .tar.gz root file system) will then be available inside build/tmp/deploy/images/sbc-lynx.
In addition to the typical images, the XUELK provides the following too:
lynx-image-networking-sbc-lynx-xeno- With respect to the
lynx-image-networkingimage, this includes additional libraries required to run the Linux kernel featuring the Xenomai real-time extension. For more details about it, please refer to https://xenomai.org/.
- With respect to the
Generating the SDKs[edit | edit source]
After creating an image as described above, the corresponding SDK can be generated by issuing the following command:
bitbake <target-image-name> -c populate-sdk
Again, replace <target-image-name> with one of the images listed here.
Build additional packages[edit | edit source]
To build additional packages the user must first enter the directory where the lynx-setup-release.sh is placed and source it
dvdk@dvdk-vm:~/lynx$ DISTRO=fsl-imx-fb MACHINE=sbc-lynx source lynx-setup-release.sh -b build-fb -e fb dvdk@dvdk-vm:~/lynx/build$
And then can run any of the bitbake command.
dvdk@dvdk-vm:~/lynx/build$ bitbake memtester
The resulting packages (the default format is ipk) can be found inside build/tmp/deploy/rpm.
dvdk@dvdk-vm:~/lynx/build$ ls -l tmp/deploy/rpm/cortexa7hf_vfp_neon/memtester* -rw-r--r-- 1 dvdk dvdk 9967 Sep 7 05:43 tmp/deploy/rpm/cortexa7hf_vfp_neon/memtester-4.1.3-r0.cortexa7hf_vfp_neon.rpm -rw-r--r-- 1 dvdk dvdk 25544 Sep 7 05:43 tmp/deploy/rpm/cortexa7hf_vfp_neon/memtester-dbg-4.1.3-r0.cortexa7hf_vfp_neon.rpm -rw-r--r-- 1 dvdk dvdk 2884 Sep 7 05:42 tmp/deploy/rpm/cortexa7hf_vfp_neon/memtester-dev-4.1.3-r0.cortexa7hf_vfp_neon.rpm -rw-r--r-- 1 dvdk dvdk 5611 Sep 7 05:44 tmp/deploy/rpm/cortexa7hf_vfp_neon/memtester-doc-4.1.3-r0.cortexa7hf_vfp_neon.rpm
