Does riscv-llvm support compile of libraries?

in README:

```
$ clang -target riscv64 -mriscv=RV64IAMFD -S hello.c -o hello.S
$ riscv64-unknown-elf-gcc -o hello.riscv hello.S
```

Which means the linking is in the `riscv64-unknown-elf-gcc`, and libraries is old ones in riscv-tools.
So how can I recompile libraries with clang?