[llvm] [llvm] annotate interfaces in llvm-c for DLL export (PR #141701)

[Saleem Abdulrasool via llvm-commits]

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@@ -334,7 +334,7 @@ LLVM_C_ABI extern void LLVMRemarkParserDispose(LLVMRemarkParserRef Parser);
  *
  * \since REMARKS_API_VERSION=0
  */
-LLVM_C_ABI extern uint32_t LLVMRemarkVersion(void);
+extern uint32_t LLVMRemarkVersion(void);
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compnerd wrote:

Is that library built dynamically? The name seems to indicate as such. In this case, this should be annotated `LLVM_ABI` or the appropriate macro for that library.

https://github.com/llvm/llvm-project/pull/141701