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Subject[PATCH 4/4] kbuild: remove cc-option test of -Werror=date-time
Date
The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.

Here is the godbolt:
https://godbolt.org/z/xvjcMa

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

Makefile | 2 +-
arch/arm64/kernel/vdso32/Makefile | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 5102c89d3167..1d7c58684fda 100644
--- a/Makefile
+++ b/Makefile
@@ -940,7 +940,7 @@ KBUILD_CFLAGS += -fno-stack-check
KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)

# Prohibit date/time macros, which would make the build non-deterministic
-KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
+KBUILD_CFLAGS += -Werror=date-time

# enforce correct pointer usage
KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types)
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index dfffd55175a3..1feb4f8e556e 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -92,7 +92,7 @@ VDSO_CFLAGS += $(call cc32-option,-Wdeclaration-after-statement,)
VDSO_CFLAGS += $(call cc32-option,-Wno-pointer-sign)
VDSO_CFLAGS += -fno-strict-overflow
VDSO_CFLAGS += $(call cc32-option,-Werror=strict-prototypes)
-VDSO_CFLAGS += $(call cc32-option,-Werror=date-time)
+VDSO_CFLAGS += -Werror=date-time
VDSO_CFLAGS += $(call cc32-option,-Werror=incompatible-pointer-types)

# The 32-bit compiler does not provide 128-bit integers, which are used in
--
2.25.1
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