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Subject[PATCH 4/4] kbuild: make LINUX_VERSION_CODE in <linux/version.h> more readable
Date
Makefile does not need to calculate LINUX_VERSION_CODE.
Let's leave it to the preprocessor.

This commit changes include/generated/uapi/linux/version.h as follows:

Before:

#define LINUX_VERSION_CODE 267264
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))

After:

#define LINUX_VERSION_CODE KERNEL_VERSION(4, 20, 0)
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))

The latter is more human-readable in my opinion.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Makefile | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 437d603..1ebf5ed 100644
--- a/Makefile
+++ b/Makefile
@@ -1131,8 +1131,7 @@ define filechk_utsrelease.h
endef

define filechk_version.h
- echo \#define LINUX_VERSION_CODE $(shell \
- expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
+ echo '#define LINUX_VERSION_CODE KERNEL_VERSION($(VERSION), $(PATCHLEVEL), $(SUBLEVEL))'; \
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
endef

--
2.7.4
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