Don't unconditionally link libiconv on macOS.

This adds `#[link(name = "iconv")]` to just the iconv symbols so that the
library is only linked if the symbols are used.

1 files changed, 0 insertions, 7 deletions

diff --git a/build.rs b/build.rs
index 9ebb67a80c..c4982111e7 100644
--- a/build.rs
+++ b/build.rs
@@ -11,7 +11,6 @@ fn main() {
     let align_cargo_feature = env::var("CARGO_FEATURE_ALIGN").is_ok();
     let const_extern_fn_cargo_feature = env::var("CARGO_FEATURE_CONST_EXTERN_FN").is_ok();
     let libc_ci = env::var("LIBC_CI").is_ok();
-    let target = env::var("TARGET").unwrap();
 
     if env::var("CARGO_FEATURE_USE_STD").is_ok() {
         println!(
@@ -84,12 +83,6 @@ fn main() {
         }
         println!("cargo:rustc-cfg=libc_const_extern_fn");
     }
-
-    // For unknown reason, libiconv can't be linked by adding #[link(name = iconv)] to
-    // a macOS-specific struct, so we do the linking here.
-    if target.contains("-apple-") {
-        println!("cargo:rustc-link-lib=iconv");
-    }
 }
 
 fn rustc_minor_nightly() -> Option<(u32, bool)> {