Compilation error with float operations

[Susmita Nayak]

Hi Team,

I am getting an error while running the RISCV GCC compiler command for the below code:

Command :

riscv32-unknown-elf-gcc  -march=rv32imafdc -mabi=ilp32f -lc -lgcc -o float_eg.elf float_eg.c

Error:

/opt/riscv_toolchain/riscv_tool_chain/bin/../lib/gcc/riscv32-unknown-elf/10.0.0/../../../../riscv32-unknown-elf/bin/ld: /tmp/ccpGGTuj.o: can't link single-float modules with soft-float modules

/opt/riscv_toolchain/riscv_tool_chain/bin/../lib/gcc/riscv32-unknown-elf/10.0.0/../../../../riscv32-unknown-elf/bin/ld: failed to merge target specific data of file /tmp/ccpGGTuj.o

collect2: error: ld returned 1 exit status

Please assist me in fixing the same.

Thanks,

Susmita

[Brandon Cheo Fusi]

Hi Susmita,

See https://www.sifive.com/blog/all-aboard-part-1-compiler-args.

Your toolchain seems to have been built with a soft float ABI i.e '--with-abi=ilp32'. Compile with

'float_eg.c' with '-march=rv32imac -mabi=ilp32' or built an appropriate toolchain.

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[Susmita Nayak]

Thank you all.

Got it.

Best Regards,

Susmita Nayak 

Principal Engineer

https://maven-silicon.com/