From ec3a5cb61146c91f0f7dcec8b7e7157a4879a9ee Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Fri, 14 May 2021 14:37:41 -0700 Subject: [PATCH] riscv: Use -mno-relax when using lld linker lld does not implement the RISCV relaxation optimizations like GNU ld therefore disable it when building with lld, Also pass it to assembler when using external GNU assembler ( LLVM_IAS != 1 ), this ensures that relevant assembler option is also enabled along. if these options are not used then we see following relocations in objects 0000000000000000 R_RISCV_ALIGN *ABS*+0x0000000000000002 These are then rejected by lld ld.lld: error: capability.c:(.fixup+0x0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax but the .o is already compiled with -mno-relax Signed-off-by: Khem Raj Reviewed-by: Nathan Chancellor Signed-off-by: Palmer Dabbelt --- arch/riscv/Makefile | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 3eb9590a0775..4be020695428 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -38,6 +38,15 @@ else KBUILD_LDFLAGS += -melf32lriscv endif +ifeq ($(CONFIG_LD_IS_LLD),y) + KBUILD_CFLAGS += -mno-relax + KBUILD_AFLAGS += -mno-relax +ifneq ($(LLVM_IAS),1) + KBUILD_CFLAGS += -Wa,-mno-relax + KBUILD_AFLAGS += -Wa,-mno-relax +endif +endif + # ISA string setting riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima