Merge pull request #310 from dtolnay/docsrs

dtolnay · web-flow · commit d8c0371a8f87 · 2021-12-14T10:07:37.000-08:00
Work around doc build failure due to docs.rs flags change
diff --git a/build.rs b/build.rs
@@ -58,7 +58,8 @@ fn main() {
         process::exit(1);
     }
 
-    let semver_exempt = cfg!(procmacro2_semver_exempt);
+    let docs_rs = env::var_os("DOCS_RS").is_some();
+    let semver_exempt = cfg!(procmacro2_semver_exempt) || docs_rs;
     if semver_exempt {
         // https://github.com/dtolnay/proc-macro2/issues/147
         println!("cargo:rustc-cfg=procmacro2_semver_exempt");

Original file line number	Diff line number	Diff line change
`@@ -58,7 +58,8 @@ fn main() {`
`58`	`58`	`process::exit(1);`
`59`	`59`	`}`
`60`	`60`
`61`		`- let semver_exempt = cfg!(procmacro2_semver_exempt);`
	`61`	`+ let docs_rs = env::var_os("DOCS_RS").is_some();`
	`62`	`+ let semver_exempt = cfg!(procmacro2_semver_exempt) \|\| docs_rs;`
`62`	`63`	`if semver_exempt {`
`63`	`64`	`// https://github.com/dtolnay/proc-macro2/issues/147`
`64`	`65`	`println!("cargo:rustc-cfg=procmacro2_semver_exempt");`