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kbuild: doc: remove documentation about copying Module.symvers around
This is a left-over of commit 39808e451f
("kbuild: do not read
$(KBUILD_EXTMOD)/Module.symvers").
Kbuild no longer supports this way.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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@ -528,18 +528,6 @@ build.
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will then do the expected and compile both modules with
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full knowledge of symbols from either module.
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Use an extra Module.symvers file
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When an external module is built, a Module.symvers file
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is generated containing all exported symbols which are
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not defined in the kernel. To get access to symbols
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from bar.ko, copy the Module.symvers file from the
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compilation of bar.ko to the directory where foo.ko is
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built. During the module build, kbuild will read the
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Module.symvers file in the directory of the external
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module, and when the build is finished, a new
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Module.symvers file is created containing the sum of
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all symbols defined and not part of the kernel.
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Use "make" variable KBUILD_EXTRA_SYMBOLS
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If it is impractical to add a top-level kbuild file,
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you can assign a space separated list
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