diff --git a/llvm/include/llvm/TargetParser/Triple.h b/llvm/include/llvm/TargetParser/Triple.h
index 09c0d223d9b4d..0ec1cbd956ad0 100644
--- a/llvm/include/llvm/TargetParser/Triple.h
+++ b/llvm/include/llvm/TargetParser/Triple.h
@@ -10,6 +10,7 @@
 #define LLVM_TARGETPARSER_TRIPLE_H
 
 #include "llvm/ADT/Twine.h"
+#include "llvm/Support/Compiler.h"
 #include "llvm/Support/VersionTuple.h"
 
 // Some system headers or GCC predefined macros conflict with identifiers in
@@ -41,7 +42,7 @@ namespace llvm {
 ///
 /// See autoconf/config.guess for a glimpse into what configuration names
 /// look like in practice.
-class Triple {
+class LLVM_ABI Triple {
 public:
   enum ArchType {
     UnknownArch,