[OE-core] [PATCH v2] kernel-devsrc: restructure for out of tree (and on target) module builds

[Bruce Ashfield]

On Thu, Mar 1, 2018 at 3:28 AM, Maxin B. John <maxin.john at intel.com> wrote:
> Hi,
>
> On Wed, Feb 28, 2018 at 02:20:45PM -0500, Bruce Ashfield wrote:
>> The existing kernel-devsrc package starts with a full copy of the kernel
>> source and then starts to strip out elements that are not required.
>>
>> This results in extra time (I/O) and extra space being taken up in the
>> final package. The main purpose of the kernel-devsrc package has been to
>> build modules against the running kernel, not to include a full copy of
>> the source code for re-building the kernel. The end result was a
>> 600M kernel-devsrc package.
>>
>> This restructuring of the package uses an approach similar to other
>> distros, where the kernel-devsrc package is for building against the
>> running kernel and uses a curated set of copied infrastructure, versus
>> a mass copy of the entire kernel.
>>
>> The differences in this approach versus other is largely due to the
>> architecture support and the split build/source directory of the
>> kernel.
>>
>> The result is a kernel-devsrc package of about 10M, which is capable
>> of running "make scripts" and compiling kernel modules against the
>> running kernel.
>>
>> Along with the changes to the copying of the infrascture, we also
>> have the following changes:
>>
>>  - a better/more explicit listing of dependencies for on-target
>>    builds of "make scripts" or "make modules_prepare"
>>
>>  - The kernel source is installed into /lib/modules/<version>/build
>>    and a symlink created from /usr/src/kernel to the new location.
>>    This aligns with the standard location for module support
>>    code
>>
>>  - There is also a symlink from /lib/modules/<version>/source -> build
>>    to reserve a spot for a new package that is simply the kernel
>>    source. That package is not part of this update.
>>
>> [YOCTO #12535]
>>
>> Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
>> ---
>>
>>  v2: fix arch/arm devsrc builds
>
> Noticed one kernel-devsrc build failure in autobuilder (qemuarm) :
>
> https://autobuilder.yocto.io/builders/nightly-arm/builds/876/steps/BuildImages/logs/stdio

This failure actually can't be from v2, it is the v1 issue I fixed.
The offending lines of
code are completely gone.

Bruce

>
> ERROR: kernel-devsrc-1.0-r0 do_install: Function failed: do_install (log file is located at /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/temp/log.do_install.25822)
> ERROR: Logfile of failure stored in: /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/temp/log.do_install.25822
> Log data follows:
> | DEBUG: Executing python function extend_recipe_sysroot
> | NOTE: Direct dependencies are ['/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/binutils/binutils-cross_2.30.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-extended/xz/xz_5.2.3.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/pkgconfig/pkgconfig_git.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-support/lzop/lzop_1.03.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-kernel/kern-tools/kern-tools-native_git.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/gcc/gcc-runtime_7.3.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/gcc/gcc-cross_7.
>  3.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/bison/bison_3.0.4.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/pseudo/pseudo_1.8.2.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-core/glibc/glibc_2.26.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-kernel/kmod/kmod-native_git.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-extended/bc/bc_1.06.bb:do_populate_sysroot', '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-devtools/quilt/quilt-native_0.65.bb:do_populate_sysroot', 'virtual:native:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-connectivity/openssl/openssl_1.0.2n.bb:d
>  o_populate_sysroot']
> | NOTE: Installed into sysroot: ['pkgconfig-native', 'lzop-native', 'kern-tools-native', 'pseudo-native', 'kmod-native', 'bc-native', 'openssl-native', 'gtk-doc-native', 'lzo-native', 'makedepend-native', 'cryptodev-linux-native', 'util-macros-native', 'xproto-native']
> | NOTE: Skipping as already exists in sysroot: ['binutils-cross-arm', 'xz-native', 'gcc-runtime', 'gcc-cross-arm', 'bison-native', 'glibc', 'quilt-native', 'gettext-minimal-native', 'gnu-config-native', 'automake-native', 'autoconf-native', 'libtool-native', 'linux-libc-headers', 'libgcc', 'zlib-native', 'texinfo-dummy-native', 'flex-native', 'libmpc-native', 'gmp-native', 'mpfr-native', 'm4-native']
> | DEBUG: sed -e 's:^[^/]*/:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/recipe-sysroot-native/:g' /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/sysroots-components/x86_64/pkgconfig-native/fixmepath /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/sysroots-components/x86_64/openssl-native/fixmepath /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/sysroots-components/x86_64/gtk-doc-native/fixmepath | xargs sed -i -e 's:FIXMESTAGINGDIRTARGET:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/recipe-sysroot:g; s:FIXMESTAGINGDIRHOST:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/recipe-sysroot-native:g' -e 's:FIXME_COMPONENTS_DIR:/home/pokybuild/yocto-autobuilder/y
>  octo-worker/nightly-arm/build/build/tmp/sysroots-components:g' -e 's:FIXME_HOSTTOOLS_DIR:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/hosttools:g' -e 's:FIXME_PKGDATA_DIR:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/pkgdata/qemuarm:g' -e 's:FIXME_PSEUDO_LOCALSTATEDIR:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/pseudo/:g' -e 's:FIXME_LOGFIFO:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/temp/fifo.25822:g'
> | DEBUG: Python function extend_recipe_sysroot finished
> | DEBUG: Executing shell function do_install
> | cp: with --parents, the destination must be a directory
> | Try 'cp --help' for more information.
> | WARNING: /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/temp/run.do_install.25822:1 exit 1 from 'rm -rf $kerneldir/build/include'
> | ERROR: Function failed: do_install (log file is located at /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/build/tmp/work/qemuarm-poky-linux-gnueabi/kernel-devsrc/1.0-r0/temp/log.do_install.25822)
> NOTE: recipe kernel-devsrc-1.0-r0: task do_install: Failed
> ERROR: Task (/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-arm/build/meta/recipes-kernel/linux/kernel-devsrc.bb:do_install) failed with exit code '1'
>
> Best Regards,
> Maxin
> --
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