Rollup merge of rust-lang#64188 - alexcrichton:wasi-cdylib, r=varkor

rustc: Allow the cdylib crate type with wasm32-wasi The wasm32-wasi target respects configuration around `crt-static` in general, but is defaulted to being static. This interacted badly with code which validated the `cdylib` crate type for `wasm32-wasi`, erroneously saying that the `cdylib` crate type wasn't supported on `wasm32-wasi` by default. This commit sets the appropriate flag in `wasm32_wasi`'s target specification to indicate that the `cdylib` crate type is supported regardless of `crt-static` Closes rust-lang#64187
tmandry · Sep 10, 2019 · 71f3fbc · 71f3fbc
2 parents 11b0ae6 + bb9d3be
commit 71f3fbc
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/librustc_target/spec/wasm32_wasi.rs b/src/librustc_target/spec/wasm32_wasi.rs
@@ -97,6 +97,10 @@ pub fn target() -> Result<Target, String> {
     options.crt_static_default = true;
     options.crt_static_respected = true;
 
+    // Allow `+crt-static` to create a "cdylib" output which is just a wasm file
+    // without a main function.
+    options.crt_static_allows_dylibs = true;
+
     Ok(Target {
         llvm_target: "wasm32-wasi".to_string(),
         target_endian: "little".to_string(),