Feature request: libc header import without libc library import

[ityonemo]

For FFIs which use C ABI as a least common denominator, but I'm sure also some header-only C libraries, may not use any stdlib externs, but might still need accoutrements of the C stdlib headers (e.g. types.h). It might be nice to provide a way to leverage zig's header resolution logic without doing linkSystemLibrary("c") which would unnecessarily bring in libc into the project.

[matu3ba]

Probably the documenation (#1596) should be finished first. Just curious: Is identifying manually the header files, which dont depend on libc, that difficult?

[ityonemo]

Yeah, it gets tricky (but not impossible) if you want cross-compilation to be possible.

[iacore]

As a workaround, use musl.