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authorRichard Purdie <richard.purdie@linuxfoundation.org>2014-10-21 21:05:30 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-12-21 12:37:53 +0000
commit86893e4ea5896199a6f02f8475f4f17aa1124c37 (patch)
tree8991c2825bdf69b41c8b30ff00db68663566209e /meta/classes/kernelsrc.bbclass
parent1ff64a7e848dcdd540e1c60acec1d0ad80a642bb (diff)
downloadpoky-86893e4ea5896199a6f02f8475f4f17aa1124c37.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. (From OE-Core rev: 3b3f7e785e27990ba21bc7cd97289c826a9a95d1) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/classes/kernelsrc.bbclass')
-rw-r--r--meta/classes/kernelsrc.bbclass7
1 files changed, 7 insertions, 0 deletions
diff --git a/meta/classes/kernelsrc.bbclass b/meta/classes/kernelsrc.bbclass
new file mode 100644
index 0000000000..11f04e9612
--- /dev/null
+++ b/meta/classes/kernelsrc.bbclass
@@ -0,0 +1,7 @@
1S = "${STAGING_KERNEL_DIR}"
2do_unpack[depends] += "virtual/kernel:do_patch"
3do_package[depends] += "virtual/kernel:do_populate_sysroot"
4KERNEL_VERSION = "${@get_kernelversion_file("${S}")}"
5
6inherit linux-kernel-base
7