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1476fee5c5
We maintain .gitignore and Makefiles so build artifacts are properly
ignored by Git, and cleaned up by 'make clean'. However, the code is
always changing; generated files are often moved to another directory,
or removed when they become unnecessary. Such garbage files tend to be
left over in the source tree because people usually git-pull without
cleaning the tree.
This is not only the noise for 'git status', but also a build issue
in some cases.
One solution is to remove a stale file like commit 223c24a7db ("kbuild:
Automatically remove stale <linux/version.h> file") did. Such workaround
should be removed after a while, but we forget about that if we scatter
the workaround code in random places.
So, this commit adds a new script to collect cleanings of stale files.
As a start point, move the code in arch/arm/boot/compressed/Makefile
into this script.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
31 lines
1.3 KiB
Bash
Executable file
31 lines
1.3 KiB
Bash
Executable file
#!/bin/sh
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set -e
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# When you move, remove or rename generated files, you probably also update
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# .gitignore and cleaning rules in the Makefile. This is the right thing
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# to do. However, people usually do 'git pull', 'git bisect', etc. without
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# running 'make clean'. Then, the stale generated files are left over, often
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# causing build issues.
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#
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# Also, 'git status' shows such stale build artifacts as untracked files.
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# What is worse, some people send a wrong patch to get them back to .gitignore
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# without checking the commit history.
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#
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# So, when you (re)move generated files, please move the cleaning rules from
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# the Makefile to this script. This is run before Kbuild starts building
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# anything, so people will not be annoyed by such garbage files.
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#
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# This script is not intended to grow endlessly. Rather, it is a temporary scrap
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# yard. Stale files stay in this file for a while (for some release cycles?),
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# then will be really dead and removed from the code base entirely.
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# These were previously generated source files. When you are building the kernel
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# with O=, make sure to remove the stale files in the output tree. Otherwise,
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# the build system wrongly compiles the stale ones.
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if [ -n "${building_out_of_srctree}" ]; then
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for f in fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
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do
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rm -f arch/arm/boot/compressed/${f}
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done
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fi
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