[clang] [lldb] [llvm] [cmake] Build executables with -no_exported_symbols when building Apple toolchain (PR #87684)

[Jon Roelofs via cfe-commits]

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@@ -673,6 +673,9 @@ option(LLVM_USE_OPROFILE
 option(LLVM_EXTERNALIZE_DEBUGINFO
   "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)
 
+option(LLVM_ENABLE_NO_EXPORTED_SYMBOLS
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jroelofs wrote:

Flags like this shouldn't have `DISABLE` in their name either. It's ambiguous/confusing whether `LLVM_DISABLE_THING=On` means THING=ON or THING=Off.

https://github.com/llvm/llvm-project/pull/87684