I'm saying the opposite, actually. I found it easier to contribute to Rust projects (with zero hours Rust experience, and much Python/Java/C/C++/Ada) because Rust projects are significantly easier to build. (Just a `cargo build` in the default case.)
It makes no sense to me. You found it easier to contribute to Rust projects because... Rust projects are significantly easier to build? What? You can just do "dune build" in OCaml, or run "make" for many C projects. Plus, it is also significantly slower to build Rust projects, you should have probably added that.
This generally fails miserably, in my experience. It's normally a dance of error: libfoo missing, followed by install (which is generally only straightforward on linux), followed by libbar is missing etc.
Don't get me wrong, I have built lots of non-trivial C projects, but it's not straighforward at all (maybe if you always work in C it's easier).
Totally, autotools helps. However, it's generally dependency issues that cause the problems, you're missing some header files etc. Finding out about these at configure time is better, but there's still a bunch of toil in identifying and getting those dependencies.