feat: impl export-executable-symbols

compiler/rustc_session/src/options.rs

@@ -1282,6 +1282,8 @@ options! {
         "emit a section containing stack size metadata (default: no)"),
     emit_thin_lto: bool = (true, parse_bool, [TRACKED],
         "emit the bc module with thin LTO info (default: yes)"),
+    export_executable_symbols: bool = (false, parse_bool, [TRACKED],
+        "export symbols from executables, as if they were dynamic libraries"),
     fewer_names: Option<bool> = (None, parse_opt_bool, [TRACKED],
         "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \
         (default: no)"),