linux-kernel - [PATCH 1/8] MIPS: Probe toolchain support of -msym32

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Date: Fri, 02 Feb 2024 18:21:40 +0000
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <ndesaulniers@...gle.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, 
 llvm@...ts.linux.dev, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH 1/8] MIPS: Probe toolchain support of -msym32

msym32 is not supported by LLVM toolchain.
Workaround by probe toolchain support of msym32 for KBUILD_SYM32
feature.

Link: https://github.com/ClangBuiltLinux/linux/issues/1544
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/mips/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index f49807e1f19b..0888074f4dfe 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -299,7 +299,7 @@ drivers-$(CONFIG_PCI)		+= arch/mips/pci/
 ifdef CONFIG_64BIT
   ifndef KBUILD_SYM32
     ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
-      KBUILD_SYM32 = y
+      KBUILD_SYM32 = $(call cc-option-yn, -msym32)
     endif
   endif
 

-- 
2.43.0