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32 lines
817 B
Markdown
32 lines
817 B
Markdown
# Build
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The module building system.
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Explained at: <https://www.kernel.org/doc/Documentation/kbuild/modules.txt>
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Full method: get the kernel, build it to a directory `$KDIR`, and then run:
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make -C "$KDIR" M="$(PWD)" modules
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Quick method: no need for a full build, just:
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make modules_prepare
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but you lose some functionality. TODO: module insert on host then fails with:
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insmod: ERROR: could not insert module hello.ko: Invalid module format
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even though kernel tree was checked out to match the host.
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Using your distro's kernel version:
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/lib/modules/$(uname -r)/build
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## includes
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Header files come from the same directory as the makefile: `/lib/modules/$(uname -r)/build`.
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TODO how is that different from: `/usr/src/linux-headers-$(uname -r)/` ?
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Those come directly from the kernel source tree.
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