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| author |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2014-10-21 21:05:30 +0000 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2014-12-20 11:24:03 +0000 |
| commit | 3b3f7e785e27990ba21bc7cd97289c826a9a95d1 (patch) | |
| tree | 511e5bef483be31777249961a974e7525b2aac6d /meta/classes/kernel-yocto.bbclass | |
| parent | 0550d112ad9c2ca9f8167dcae35200210923f2c5 (diff) | |
| download | openembedded-core-contrib-3b3f7e785e27990ba21bc7cd97289c826a9a95d1.tar.gz | |
kernel: Rearrange for 1.8
In 1.8 we want to streamline the kernel build process. Basically we
currently have multiple copies of the kernel source floating around
and the copying/compression/decompression is painful.
Lets assume we have a kernel source per machine since in most cases
this is true (and we have a sysroot per machine anyway). Basically,
instead of extracting a source into WORKDIR, then copying to a sysroot,
we now set S to point straight at STAGING_DIR_KERNEL.
Anything using kernel source can then just point at it and use:
do_configure[depends] += "virtual/kernel:do_patch"
to depend on the kernel source being present. Note this is different
behaviour to DEPENDS += "virtual/kernel" which equates to
do_configure[depends] += "virtual/kernel:do_populate_sysroot".
Once we do this, we no longer need the copy operation in
do_populate_sysroot, in fact there is nothing to do there (yay).
The remaining part of the challenge is to kill off the horrible
do_install. This patch splits it off to a different class, the idea here
is to have a separate recipe which depends on the virtual/kernel:do_patch
and just installs and packages the source needed to build modules on
target into a specific package.
Right now this code is proof of concept. It builds kernels and kernel
modules. perf blows up in do_package with issues on finding the kernel
version which can probably be fixed by adding back the right bit of do_install,
and adding a dependency of do_package[depends] += "virtual/kernel:do_install"
to perf. The whole thing needs a good write up, the corner cases testing
and probably a good dose of cleanup to the remaining code.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/classes/kernel-yocto.bbclass')
| -rw-r--r-- | meta/classes/kernel-yocto.bbclass | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass index c3e24943bb..45bdc9670a 100644 --- a/meta/classes/kernel-yocto.bbclass +++ b/meta/classes/kernel-yocto.bbclass @@ -1,5 +1,3 @@ -S = "${WORKDIR}/linux" - # remove tasks that modify the source tree in case externalsrc is inherited SRCTREECOVEREDTASKS += "do_kernel_link_vmlinux do_kernel_configme do_validate_branches do_kernel_configcheck do_kernel_checkout do_patch" |