Define VISIBILITY_HIDDEN when compiling objects

alexcrichton · alexcrichton · commit 24d49071e5ca · 2016-11-18T09:40:20.000-08:00
Apparently compiler-rt passed this and we just forgot to. Fixes visibility of
some symbols on 32-bit Linux.
diff --git a/build.rs b/build.rs
@@ -78,6 +78,7 @@ fn main() {
             cfg.flag("-fvisibility=hidden");
             cfg.flag("-fomit-frame-pointer");
             cfg.flag("-ffreestanding");
+            cfg.define("VISIBILITY_HIDDEN", None);
         }
 
         // NOTE Most of the ARM intrinsics are written in assembly. Tell gcc which arch we are going to

Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,7 @@ fn main() {`
`78`	`78`	`cfg.flag("-fvisibility=hidden");`
`79`	`79`	`cfg.flag("-fomit-frame-pointer");`
`80`	`80`	`cfg.flag("-ffreestanding");`
	`81`	`+ cfg.define("VISIBILITY_HIDDEN", None);`
`81`	`82`	`}`
`82`	`83`
`83`	`84`	`// NOTE Most of the ARM intrinsics are written in assembly. Tell gcc which arch we are going to`