cfg(doc) doesn't seem to be passed down to dependencies

[GuillaumeGomez]

I have in cairo-sys the following:

#[cfg(any(feature = "pdf", all(not(doctest), doc)))]
pub type cairo_pdf_version_t = c_int;

And in cairo:

#[cfg(any(feature = "pdf", all(not(doctest), doc)))]
#[doc(hidden)]
impl From<PdfVersion> for ffi::cairo_pdf_version_t {
    fn from(val: PdfVersion) -> ffi::cairo_pdf_version_t {
        match val {
            PdfVersion::_1_4 => ffi::PDF_VERSION__1_4,
            PdfVersion::_1_5 => ffi::PDF_VERSION__1_5,
            PdfVersion::__Unknown(value) => value,
        }
    }
}

But when running cargo doc, I get:

error[E0412]: cannot find type `cairo_pdf_version_t` in crate `ffi`
    --> cairo/src/enums.rs:1565:32
     |
1565 | impl From<PdfVersion> for ffi::cairo_pdf_version_t {
     |                                ^^^^^^^^^^^^^^^^^^^ not found in `ffi`

So I assume that the cfg(doc) isn't passed down to dependencies, contrary to what's expected.

Extra info wih cargo -v:

     Running `rustdoc --edition=2018 --crate-type lib --crate-name cairo_sys cairo/sys/src/lib.rs -o /home/imperio/rust/gtk-rs/target/doc --cfg 'feature="freetype"' --cfg 'feature="glib_ffi"' --cfg 'feature="use_glib"' --error-format=json --json=diagnostic-rendered-ansi -L dependency=/home/imperio/rust/gtk-rs/target/debug/deps --extern glib_ffi=/home/imperio/rust/gtk-rs/target/debug/deps/libglib_sys-1f466c66096ae0c3.rmeta --extern libc=/home/imperio/rust/gtk-rs/target/debug/deps/liblibc-87e5377408253f4a.rmeta --crate-version 0.13.0`

[GuillaumeGomez]

It was already discussed in rust-lang/rust#76252 (comment)

[jnqnfe]

It was already discussed in rust-lang/rust#76252 (comment)

And dup of issue #8811 ?

[GuillaumeGomez]

The problem seems similar but not sure if it's exactly the same...

[ehuss]

Can you clarify what appears to be different? AFAICT, it is the same, that dependencies do not set --cfg doc.

[GuillaumeGomez]

Then it's the same. Closing this one then!