Add build script to rustc_attr because of cfg(version)

rust-lang · May 3, 2020 · 8a77d1c · 8a77d1c
1 parent a3ee283
commit 8a77d1c
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diff --git a/src/librustc_attr/Cargo.toml b/src/librustc_attr/Cargo.toml
@@ -3,6 +3,7 @@ authors = ["The Rust Project Developers"]
 name = "rustc_attr"
 version = "0.0.0"
 edition = "2018"
+build = "build.rs"
 
 [lib]
 name = "rustc_attr"

diff --git a/src/librustc_attr/build.rs b/src/librustc_attr/build.rs
@@ -0,0 +1,4 @@
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+    println!("cargo:rerun-if-env-changed=CFG_VERSION");
+}