* [PATCH] riscv: don't specify -mno-save-restore when building with clang
@ 2020-07-08 11:52 Tobias Klauser
0 siblings, 0 replies; only message in thread
From: Tobias Klauser @ 2020-07-08 11:52 UTC (permalink / raw)
To: Palmer Dabbelt, Paul Walmsley, Albert Ou; +Cc: linux-riscv, Palmer Dabbelt
Clang doesn't support -msave-restore and -mno-save-restore. This avoids
the following message emitted by clang:
'-save-restore' is not a recognized feature for this target (ignoring feature)
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
arch/riscv/Makefile | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index fb6e37db836d..cd3720bc45e8 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -44,7 +44,9 @@ riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
KBUILD_AFLAGS += -march=$(riscv-march-y)
+ifndef CONFIG_CC_IS_CLANG
KBUILD_CFLAGS += -mno-save-restore
+endif
KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
ifeq ($(CONFIG_CMODEL_MEDLOW),y)
--
2.27.0
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2020-07-08 11:52 [PATCH] riscv: don't specify -mno-save-restore when building with clang Tobias Klauser
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