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kheaders: explain why include/config/autoconf.h is excluded from md5sum
commit f276031b4e
upstream.
This comment block explains why include/generated/compile.h is omitted,
but nothing about include/generated/autoconf.h, which might be more
difficult to understand. Add more comments.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 9 additions and 2 deletions
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@ -32,8 +32,15 @@ fi
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all_dirs="$all_dirs $dir_list"
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# include/generated/compile.h is ignored because it is touched even when none
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# of the source files changed. This causes pointless regeneration, so let us
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# ignore them for md5 calculation.
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# of the source files changed.
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#
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# When Kconfig regenerates include/generated/autoconf.h, its timestamp is
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# updated, but the contents might be still the same. When any CONFIG option is
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# changed, Kconfig touches the corresponding timestamp file include/config/*.h.
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# Hence, the md5sum detects the configuration change anyway. We do not need to
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# check include/generated/autoconf.h explicitly.
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#
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# Ignore them for md5 calculation to avoid pointless regeneration.
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headers_md5="$(find $all_dirs -name "*.h" |
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grep -v "include/generated/compile.h" |
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grep -v "include/generated/autoconf.h" |
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