linux-kernel - [RFC PATCH V3 01/11] riscv: Separate patch for cflags and aflags

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Message-Id: <20200308094954.13258-2-guoren@kernel.org>
Date:   Sun,  8 Mar 2020 17:49:44 +0800
From:   guoren@...nel.org
To:     paul.walmsley@...ive.com, palmer@...belt.com, Anup.Patel@....com,
        greentime.hu@...ive.com
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        arnd@...db.de, linux-csky@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Guo Ren <guoren@...ux.alibaba.com>,
        Dave Martin <Dave.Martin@....com>
Subject: [RFC PATCH V3 01/11] riscv: Separate patch for cflags and aflags

From: Guo Ren <guoren@...ux.alibaba.com>

From: Guo Ren <ren_guo@...ky.com>

Use "subst fd" in Makefile is a hack way and it's not convenient
to add new ISA feature. Just separate them into riscv-march-cflags
and riscv-march-aflags.

Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
---
 arch/riscv/Makefile | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index b9009a2fbaf5..6d09b53cf106 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -35,12 +35,18 @@ else
 endif
 
 # ISA string setting
-riscv-march-$(CONFIG_ARCH_RV32I)	:= rv32ima
-riscv-march-$(CONFIG_ARCH_RV64I)	:= rv64ima
-riscv-march-$(CONFIG_FPU)		:= $(riscv-march-y)fd
-riscv-march-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-y)c
-KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
-KBUILD_AFLAGS += -march=$(riscv-march-y)
+riscv-march-cflags-$(CONFIG_ARCH_RV32I)		:= rv32ima
+riscv-march-cflags-$(CONFIG_ARCH_RV64I)		:= rv64ima
+riscv-march-$(CONFIG_FPU)			:= $(riscv-march-y)fd
+riscv-march-cflags-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-cflags-y)c
+
+riscv-march-aflags-$(CONFIG_ARCH_RV32I)		:= rv32ima
+riscv-march-aflags-$(CONFIG_ARCH_RV64I)		:= rv64ima
+riscv-march-aflags-$(CONFIG_FPU)		:= $(riscv-march-aflags-y)fd
+riscv-march-aflags-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-aflags-y)c
+
+KBUILD_CFLAGS += -march=$(riscv-march-cflags-y)
+KBUILD_AFLAGS += -march=$(riscv-march-aflags-y)
 
 KBUILD_CFLAGS += -mno-save-restore
 KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
-- 
2.17.0