ld: -shared not supported

[ardeal]

Dear @jim-wilson,

I saw your answer at: riscv-collab/riscv-gnu-toolchain#335
your answer is:
You have to use a linux toolchain instead of an elf toolchain to build the kernel.
as the above link has been closed, I coundn't ask any more questions. Forthermore, I could find your email or contact, so I ask the question here:

---

my envrionment:
ubuntu 20.04,
toolchain: riscv32-elf-ubuntu-20.04-nightly-2022.12.17-nightly.tar.gz
riscv-linux link: https://github.com/CSL-KU/riscv-linux

I would like to build riscv-linux and then run it on embedded RISCV MCU. I am experiencing the following issue

according to your answer:
You have to use a linux toolchain instead of an elf toolchain to build the kernel.
where is the linux toolchain you mentioned?

I am going to run the compiled linux on RISCV, could I use the PC Linux toolchain? I got confused!!!

  CALL    scripts/checksyscalls.sh
  CHK     scripts/mod/devicetable-offsets.h
  CHK     include/generated/compile.h
  VDSOLD  arch/riscv/kernel/vdso/vdso.so.dbg
/opt/riscv/lib/gcc/riscv32-unknown-elf/12.2.0/../../../../riscv32-unknown-elf/bin/ld: -shared not supported
collect2: error: ld returned 1 exit status
  OBJCOPY arch/riscv/kernel/vdso/vdso.so
riscv32-unknown-elf-objcopy: 'arch/riscv/kernel/vdso/vdso.so.dbg': No such file
make[2]: *** [arch/riscv/kernel/vdso/Makefile:48: arch/riscv/kernel/vdso/vdso.so] Error 1
make[1]: *** [scripts/Makefile.build:575: arch/riscv/kernel/vdso] Error 2
make: *** [Makefile:1018: arch/riscv/kernel] Error 2

[jim-wilson]

You need a riscv32-linux toolchain instead of the riscv32-elf toolchain. I don't know where you got the riscv32-elf toolchain. You can grab toolchain sources and try building a riscv32-linux toolchain.