From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason@zx2c4.com (Jason A. Donenfeld) Date: Sat, 23 Dec 2017 01:43:23 +0100 Subject: [PATCH] arm64: support __int128 with clang Message-ID: <20171223004323.1986-1-Jason@zx2c4.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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