---

yaml
---
r: 210024
b: refs/heads/try
c: 5f518ad
h: refs/heads/master
v: v3

Author: alexcrichton

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: 3e561f05c00cd180ec02db4ccab2840a4aba93d2
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: ba0e1cd8147d452c356aacb29fb87568ca26f111
-refs/heads/try: 6c048723f83fad6c96c2e19d6dfa1db547371c11
+refs/heads/try: 5f518ad658fe3914f3817285c484409a582cba96
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596

branches/try/src/compiletest/runtest.rs

@@ -1233,7 +1233,20 @@ fn compose_and_run_compiler(config: &Config, props: &TestProps,
         let mut crate_type = if aux_props.no_prefer_dynamic {
             Vec::new()
         } else {
-            vec!("--crate-type=dylib".to_string())
+            // We primarily compile all auxiliary libraries as dynamic libraries
+            // to avoid code size bloat and large binaries as much as possible
+            // for the test suite (otherwise including libstd statically in all
+            // executables takes up quite a bit of space).
+            //
+            // For targets like MUSL, however, there is no support for dynamic
+            // libraries so we just go back to building a normal library. Note,
+            // however, that if the library is built with `force_host` then it's
+            // ok to be a dylib as the host should always support dylibs.
+            if config.target.contains("musl") && !aux_props.force_host {
+                vec!("--crate-type=lib".to_string())
+            } else {
+                vec!("--crate-type=dylib".to_string())
+            }
         };
         crate_type.extend(extra_link_args.clone().into_iter());
         let aux_args =