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| author | Khem Raj <raj.khem@gmail.com> | 2021-05-14 14:37:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-18 09:58:58 +0200 |
| commit | 527f70f767429555648ef42664d362bd0e3b947e (patch) | |
| tree | b0e390a38a8efcbcc94092b0f52c753734196bdd /arch/riscv | |
| parent | e58f4b5046e0ef37b5d3398c577ab0e80642c62b (diff) | |
riscv: Use -mno-relax when using lld linker
[ Upstream commit ec3a5cb61146c91f0f7dcec8b7e7157a4879a9ee ]
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 <raj.khem@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/Makefile | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index f5e914210245..1cbe0ad78b0f 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -34,6 +34,15 @@ 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 |