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3b49416fc7
The existing infrastructure uses an external build tree which references the kernel source in the work dir. If run with rm work, building external modules will fail. This patch places a configured source tree in sysroots. Striking a balance between minimal size and minimal maintenance is difficult. A fully configured tree is about 500MB after a clean. This version leans on the side of caution and removes only the obviously unecessary parts of the source tree to conserve space, resulting in about 170MB. The arch directories would be some additional pruning we could do. Given examples from the devel package from distributions, I suspect this size could be reduced to 75MB or so, but at the cost of a much more complex recipe which is likely to require a great deal more maintenance to keep current with kernel releases. Care is also taken to clean the hostprogs in scripts, and the modules are responsible for building them as needed. Although it is unclear to me if this is really necessary, especially considering that modules put these bits back as soon as they compile. If we are not generating an sstate package, I suspect we can ignore these. Please try this with your modules and let me know how it does. I tried to take non linux-yocto kernel recipes into account, but I have only tested with linux-yocto and the hello-mod recipe so far. (From OE-Core rev: a9d41062e24a6b99661b3a5256f369b557433607) Signed-off-by: Darren Hart <dvhart@linux.intel.com> Acked-by: Koen Kooi <koen@dominion.thruhere.net> Acked-by: Gary Thomas <gary@mlbassoc.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
30 lines
804 B
PHP
30 lines
804 B
PHP
DESCRIPTION = "Yocto Kernel"
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SECTION = "kernel"
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LICENSE = "GPL"
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LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
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# A KMACHINE is the mapping of a yocto $MACHINE to what is built
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# by the kernel. This is typically the branch that should be built,
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# and it can be specific to the machine or shared
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# KMACHINE = "UNDEFINED"
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# Set this to 'preempt_rt' in the local.conf if you want a real time kernel
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LINUX_KERNEL_TYPE ?= standard
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do_patch[depends] = "kern-tools-native:do_populate_sysroot"
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addtask kernel_configme before do_configure after do_patch
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# Pick up shared functions
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inherit kernel-yocto
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require linux-dtb.inc
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B = "${WORKDIR}/linux-${MACHINE}-${LINUX_KERNEL_TYPE}-build"
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do_install_append(){
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if [ -n "${KMETA}" ]; then
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rm -rf ${STAGING_KERNEL_DIR}/${KMETA}
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fi
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}
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