1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
extern crate rustc_version;
use rustc_version::{version, version_meta, Channel, Version};
fn main() {
// Assert we haven't travelled back in time
assert!(version().unwrap().major >= 1);
// Check for a minimum version
if version().unwrap() >= Version::parse("1.36.0").unwrap() {
println!("cargo:rustc-cfg=fieldoffset_maybe_uninit");
println!("cargo:rustc-cfg=fieldoffset_has_alloc");
}
if version_meta().unwrap().channel == Channel::Nightly {
println!("cargo:rustc-cfg=fieldoffset_assert_in_const_fn");
}
}
|
