From 0b6dce43096aff3eb8a3e0e43442441185129025 Mon Sep 17 00:00:00 2001
From: StackDoubleFlow <ojaslandge@gmail.com>
Date: Mon, 7 Nov 2022 22:42:07 -0600
Subject: Issue error when `-C link-self-contained` option is used on
 unsupported platforms

Document supported targets for `-C link-self-contained`

Move `LinkSelfContainedDefault::True` from wasm_base to wasm32_wasi
---
 compiler/rustc_codegen_ssa/src/back/link.rs | 3 +++
 compiler/rustc_codegen_ssa/src/errors.rs    | 4 ++++
 2 files changed, 7 insertions(+)

(limited to 'compiler/rustc_codegen_ssa/src')

diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs
index 4445e5f6c3a..2091730af22 100644
--- a/compiler/rustc_codegen_ssa/src/back/link.rs
+++ b/compiler/rustc_codegen_ssa/src/back/link.rs
@@ -1588,6 +1588,9 @@ fn detect_self_contained_mingw(sess: &Session) -> bool {
 /// We only provide such support for a very limited number of targets.
 fn self_contained(sess: &Session, crate_type: CrateType) -> bool {
     if let Some(self_contained) = sess.opts.cg.link_self_contained {
+        if sess.target.link_self_contained == LinkSelfContainedDefault::False {
+            sess.emit_err(errors::UnsupportedLinkSelfContained);
+        }
         return self_contained;
     }
 
diff --git a/compiler/rustc_codegen_ssa/src/errors.rs b/compiler/rustc_codegen_ssa/src/errors.rs
index bfc4515de09..ade50af0aee 100644
--- a/compiler/rustc_codegen_ssa/src/errors.rs
+++ b/compiler/rustc_codegen_ssa/src/errors.rs
@@ -530,3 +530,7 @@ pub enum AppleSdkRootError<'a> {
 pub struct ReadFileError {
     pub message: std::io::Error,
 }
+
+#[derive(Diagnostic)]
+#[diag(codegen_ssa_unsupported_link_self_contained)]
+pub struct UnsupportedLinkSelfContained;
-- 
cgit 1.4.1-3-g733a5