Given that crate foo
depends on crate bar
which depends on crate baz
,
I know baz
's build.rs
can get activated features of crate baz
, by enumerating all environment variables in the form of CARGO_FEATURE_<name>
.
But I don't know what to do in baz
's build.rs
to get foo
's activated features , when building crate foo
invoking e.g. cargo build --no-default-features --features "alpha"
.