Only rerun build script if build script changes

alexcrichton · alexcrichton · commit 21d6e9f2782a · 2019-09-27T07:55:54.000-07:00
Avoids unnecessary rebuilds when locally developing the crate.
diff --git a/build.rs b/build.rs
@@ -1,4 +1,5 @@
 fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
     let nightly = std::env::var_os("CARGO_FEATURE_NIGHTLY").is_some();
     let has_stable_alloc = || autocfg::new().probe_rustc_version(1, 36);
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`fn main() {`
	`2`	`+ println!("cargo:rerun-if-changed=build.rs");`
`2`	`3`	`let nightly = std::env::var_os("CARGO_FEATURE_NIGHTLY").is_some();`
`3`	`4`	`let has_stable_alloc = \|\| autocfg::new().probe_rustc_version(1, 36);`
`4`	`5`