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Message-Id: <20171223004323.1986-1-Jason@zx2c4.com> Date: Sat, 23 Dec 2017 01:43:23 +0100 From: "Jason A. Donenfeld" <Jason@...c4.com> To: Will Deacon <will.deacon@....com>, linux-arm-kernel@...ts.infradead.org, LKML <linux-kernel@...r.kernel.org> Cc: "Jason A. Donenfeld" <Jason@...c4.com> Subject: [PATCH] arm64: support __int128 with clang Commit fb8722735f50 ("arm64: support __int128 on gcc 5+") added support for arm64 __int128 with gcc with a version-conditional, but neglected to enable this for clang, which in fact appears to support aarch64 __int128. This commit therefore enables it if the compiler is clang, using the same type of makefile conditional used elsewhere in the tree. Signed-off-by: Jason A. Donenfeld <Jason@...c4.com> --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index b481b4a7c011..16c2e8b58546 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -57,7 +57,11 @@ KBUILD_AFLAGS += $(lseinstr) $(brokengasinst) KBUILD_CFLAGS += $(call cc-option,-mabi=lp64) KBUILD_AFLAGS += $(call cc-option,-mabi=lp64) +ifeq ($(cc-name),clang) +KBUILD_CFLAGS += -DCONFIG_ARCH_SUPPORTS_INT128 +else KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0500, -DCONFIG_ARCH_SUPPORTS_INT128) +endif ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian -- 2.15.1
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