linuxppc CI scripts

Scripts I use to do continuous integration for linuxppc.

Still (and probably always) under heavy development.

Quick start

Make sure you can run containers.

On Ubuntu the scripts will use docker, on Fedora they will use podman.

You need a Linux source tree, which hasn't been built in. You can make sure it's clean with make mrproper, or clone a fresh tree.

Clone this repo.

$ cd ci-scripts
$ cd build
$ make pull-image@ppc64le@ubuntu@21.10
$ make SRC=~/src/linux kernel@ppc64le@ubuntu@21.10 JFACTOR=$(nproc)

This will build you a ppc64le_defconfig using the Ubuntu 21.10 toolchain.

The kernel will be in output/ppc64le@ubuntu@21.10/ppc64le_defconfig/vmlinux.

For more help try make help.

Building different defconfigs

You can specify a defconfig with DEFCONFIG.

$ make SRC=~/src/linux kernel@ppc64le@ubuntu@21.10 DEFCONFIG=powernv_defconfig JFACTOR=$(nproc)

Note that the subarch (eg. ppc64le) needs to match the defconfig, so to build ppc64_defconfig, use ppc64.

$ make SRC=~/src/linux kernel@ppc64@ubuntu@21.10 DEFCONFIG=ppc64_defconfig JFACTOR=$(nproc)

Different toolchains

There are images for various toolchains, they are encoded in the distro name/version.

• kernel.org gcc 11.1.0 korg@11.1.0
• kernel.org gcc 10.3.0 korg@10.3.0
• kernel.org gcc 9.3.0 korg@9.3.0
• kernel.org gcc 8.1.0 korg@8.1.0
• kernel.org gcc 5.5.0 korg@5.5.0
• Ubuntu 21.10 ubuntu@21.10
• Ubuntu 21.04 ubuntu@21.04
• Ubuntu 20.10 ubuntu@20.10
• Ubuntu 20.04 ubuntu@20.04
• Ubuntu 18.04 ubuntu@18.04
• Ubuntu 16.04 ubuntu@16.04
• Fedora 35 fedora@35
• Fedora 34 fedora@34
• Fedora 33 fedora@33
• Fedora 31 fedora@31

Only the Ubuntu toolchains can build the selftests.

Building selftests

To build the kernel selftests:

$ make SRC=~/src/linux selftests@ppc64le@ubuntu@21.10 JFACTOR=$(nproc)

Or just the powerpc selftests:

$ make SRC=~/src/linux ppctests@ppc64le@ubuntu@21.10 JFACTOR=$(nproc)

You can also build the powerpc selftests with all available toolchains using:

$ make SRC=~/src/linux ppctests JFACTOR=$(nproc)

Other options

As mentioned above you pass the make -j factor with JFACTOR=n.

To run sparse use the ubuntu@21.10 image and pass SPARSE=1.

$ make SRC=~/src/linux kernel@ppc64le@ubuntu@21.10 SPARSE=1 JFACTOR=$(nproc)

The log will be in eg. output/ppc64le@ubuntu@21.10/ppc64le_defconfig/sparse.log.

To build modules pass MODULES=1

To build with clang pass CLANG=1, only works using the Ubuntu 21.10 images.

For a quiet build pass QUIET=1, for verbose pass VERBOSE=1.

By default the script does an incremental build, ie. it doesn't clean. You can clean before building by passing PRE_CLEAN=1, or afterward with POST_CLEAN=1.

Alternately you can clean everything with make clean.

Multiple builds

If you have enough CPU and disk space, you can run multiple builds at once. The output directory is namespaced based on the subarch, distro, version, and defconfig.

Building your own image

If you don't want to pull an untrusted image, you can build it yourself with:

$ make rebuild-image@ppc64le@ubuntu@21.10

Note that the build mounts the source tree read-only, so nothing it does can affect your source tree.