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kbuild: do not redirect the first prerequisite for filechk
Currently, filechk unconditionally opens the first prerequisite and redirects it as the stdin of a filechk_* rule. Hence, every target using $(call filechk,...) must list something as the first prerequisite even if it is unneeded. '< $<' is actually unneeded in most cases. Each rule can explicitly adds it if necessary. Signed-off-by: Masahiro Yamada <[email protected]>
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Original file line number | Diff line number | Diff line change |
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@@ -56,7 +56,7 @@ kecho := $($(quiet)kecho) | |
define filechk | ||
$(Q)set -e; \ | ||
mkdir -p $(dir $@); \ | ||
$(filechk_$(1)) < $< > [email protected]; \ | ||
$(filechk_$(1)) > [email protected]; \ | ||
if [ -r $@ ] && cmp -s $@ [email protected]; then \ | ||
rm -f [email protected]; \ | ||
else \ | ||
|
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