[llvm] Create a CharSetConverter class with both iconv and icu support (PR #74516)

[Aaron Ballman via llvm-commits]

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@@ -295,6 +296,14 @@ add_llvm_component_library(LLVMSupport
   Demangle
   )
 
+# Link icu library if it is an external library.
+if(ICU_FOUND)
+  target_link_libraries(LLVMSupport
+  PRIVATE
+  ${ICU_LIBRARIES}
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AaronBallman wrote:

Ah sorry for the confusion, you're right, we did already figure this out. Sorry, I think there's nothing to do here then -- we're not *requiring* the dynamic link, it's opt-in.

https://github.com/llvm/llvm-project/pull/74516