When use multi-lib riscv-tool-chain. A bug is triggered when there are two
'-march' at command line.
riscv64-unknown-elf-gcc -march=rv32gcp -mabi=ilp32f -march=rv32gcpzp64
HelloWorld.c
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld:
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/lib/crt0.o:
ABI is incompatible with that of the selected emulation:
target emulation `elf64-littleriscv' does not match `elf32-littleriscv'
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld:
failed to merge target specific data of file
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/lib/crt0.o
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld:
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/crtbegin.o:
ABI is incompatible with that of the selected emulation:
target emulation `elf64-littleriscv' does not match `elf32-littleriscv'
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld:
failed to merge target specific data of file
/lhome/gengq/riscv64-linux-ptest/lib/gcc/riscv64-unknown-elf/10.2.0/crtbegin.o
......
This patch fix it. And the DIVER would prune the extra '-march' and '-mabi'
options and keep only the last one valid.
gcc/ChangeLog:
* config/riscv/riscv.opt (march=,mabi=): Negative itself.
---
gcc/config/riscv/riscv.opt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index e294e22..5ff85c2 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -38,7 +38,7 @@ Target Var(TARGET_PLT) Init(1)
When generating -fpic code, allow the use of PLTs. Ignored for fno-pic.
mabi=
-Target RejectNegative Joined Enum(abi_type) Var(riscv_abi) Init(ABI_ILP32)
+Target RejectNegative Joined Enum(abi_type) Var(riscv_abi) Init(ABI_ILP32)
Negative(mabi=)
Specify integer and floating-point calling convention.
mpreferred-stack-boundary=
@@ -79,7 +79,7 @@ Target Mask(DIV)
Use hardware instructions for integer division.
march=
-Target RejectNegative Joined
+Target RejectNegative Joined Negative(march=)
-march= Generate code for given RISC-V ISA (e.g. RV64IM). ISA strings
must be
lower-case.
--
2.7.4
