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MacOS: add linker flag "-undefined dynamic_lookup" for shared libs. #66204

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MacOS: add linker flag "-undefined dynamic_lookup" for shared libs. #66204

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3 changes: 3 additions & 0 deletions src/librustc_codegen_ssa/back/linker.rs
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Expand Up @@ -361,6 +361,9 @@ impl<'a> Linker for GccLinker<'a> {
self.cmd.arg("-dynamiclib");
self.linker_arg("-dylib");

// some symbols may be defined in the program loading the library
self.linker_arg("-undefined,dynamic_lookup");

// Note that the `osx_rpath_install_name` option here is a hack
// purely to support rustbuild right now, we should get a more
// principled solution at some point to force the compiler to pass
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