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-rw-r--r--rand/build.rs18
1 files changed, 7 insertions, 11 deletions
diff --git a/rand/build.rs b/rand/build.rs
index e44b643..a554ad9 100644
--- a/rand/build.rs
+++ b/rand/build.rs
@@ -1,14 +1,10 @@
-extern crate rustc_version;
-use rustc_version::{version, Version};
+extern crate autocfg;
fn main() {
- if version().unwrap() >= Version::parse("1.25.0").unwrap() {
- println!("cargo:rustc-cfg=rust_1_25");
- }
- if version().unwrap() >= Version::parse("1.26.0").unwrap() {
- println!("cargo:rustc-cfg=rust_1_26");
- }
- if version().unwrap() >= Version::parse("1.27.0").unwrap() {
- println!("cargo:rustc-cfg=rust_1_27");
- }
+ println!("cargo:rerun-if-changed=build.rs");
+
+ let ac = autocfg::new();
+ ac.emit_rustc_version(1, 25);
+ ac.emit_rustc_version(1, 26);
+ ac.emit_rustc_version(1, 27);
}