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| author | Khem Raj <raj.khem@gmail.com> | 2021-05-15 00:37:41 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-05-29 21:40:16 +0300 |
| commit | ec3a5cb61146c91f0f7dcec8b7e7157a4879a9ee (patch) | |
| tree | 6493dcde67f2eeb3473eb0e6f30c4096e9e0b658 | |
| parent | bab0d47c0ebb50ae0bcfa4e84986a60113bf7d6b (diff) | |
| download | linux-ec3a5cb61146c91f0f7dcec8b7e7157a4879a9ee.tar.xz | |
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 <raj.khem@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| -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 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 |