[clang] [ClangLinkerWrapper] Forward --allow-multiple-definition to linker. (PR #182282)

[Joseph Huber via cfe-commits]

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@@ -574,6 +574,9 @@ Expected<StringRef> clang(ArrayRef<StringRef> InputFiles, const ArgList &Args,
   if (Args.hasArg(OPT_embed_bitcode))
     CmdArgs.push_back("-Wl,--lto-emit-llvm");
 
+  if (Args.hasArg(OPT_allow_multiple_definition))
+    CmdArgs.push_back("-Wl,--allow-multiple-definition");
+
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jhuber6 wrote:

Does `-Xoffload-linker --allow-multiple-definition` not work?

https://github.com/llvm/llvm-project/pull/182282