Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
kbuild: use 'output' variable to create the output directory
$(KBUILD_OUTPUT) specifies the output directory of kernel builds.
Use a more generic name, 'output', to better reflect this code hunk in
the context of external module builds.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
+8
-6
+8
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Makefile
+8
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Makefile
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# The O= assignment takes precedence over the KBUILD_OUTPUT environment
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# variable.
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-
# Do we want to change the working directory?
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ifeq ("$(origin O)", "command line")
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KBUILD_OUTPUT := $(O)
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endif
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-
ifneq ($(KBUILD_OUTPUT),)
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output := $(KBUILD_OUTPUT)
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+
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+
# Do we want to change the working directory?
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ifneq ($(output),)
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# $(realpath ...) gets empty if the path does not exist. Run 'mkdir -p' first.
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-
$(shell mkdir -p "$(KBUILD_OUTPUT)")
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$(shell mkdir -p "$(output)")
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# $(realpath ...) resolves symlinks
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-
abs_output := $(realpath $(KBUILD_OUTPUT))
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$(if $(abs_output),,$(error failed to create output directory "$(KBUILD_OUTPUT)"))
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-
endif # ifneq ($(KBUILD_OUTPUT),)
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abs_output := $(realpath $(output))
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$(if $(abs_output),,$(error failed to create output directory "$(output)"))
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endif
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ifneq ($(words $(subst :, ,$(abs_srctree))), 1)
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$(error source directory cannot contain spaces or colons)