Support for compiling C dependencies

[nazar-pc]

When trying to compile a dependency that uses cc to compile some C code, I'm getting following error:

warning: [email protected]: cc: error: unrecognized argument in option ‘-mabi=ilp32’
warning: [email protected]: cc: note: valid arguments to ‘-mabi=’ are: ms sysv

error: failed to run custom build command for `blst v0.3.13`

Caused by:
  process didn't exit successfully: `/tmp/jolt-guest-target-guest-prove/release/build/blst-20e12a0d4fdcc931/build-script-build` (exit status: 1)
  --- stdout
  cargo:rustc-cfg=feature="std"
  cargo:rerun-if-env-changed=BLST_TEST_NO_STD
  Using blst source directory /home/nazar-pc/.cargo/registry/src/index.crates.io-6f17d22bba15001f/blst-0.3.13/blst
  cargo:rerun-if-changed=/home/nazar-pc/.cargo/registry/src/index.crates.io-6f17d22bba15001f/blst-0.3.13/blst/src
  OUT_DIR = Some(/tmp/jolt-guest-target-guest-prove/riscv32im-jolt-zkvm-elf/release/build/blst-daa94ed0e0ebce82/out)
  TARGET = Some(riscv32im-jolt-zkvm-elf)
  HOST = Some(x86_64-unknown-linux-gnu)
...
  cargo:warning=cc: error: unrecognized argument in option ‘-mabi=ilp32’
  cargo:warning=cc: note: valid arguments to ‘-mabi=’ are: ms sysv

Is this completely hopeless until riscv32im-jolt-zkvm-elf is added to C compiler?

https://github.com/risc0/risc0 supports it somehow, but I'm not familiar with implementation details.