[z/OS] Define CLANG_ABI

Author: Muiez

clang/include/clang/Support/Compiler.h

@@ -49,7 +49,7 @@
 #define CLANG_TEMPLATE_ABI __declspec(dllimport)
 #define CLANG_EXPORT_TEMPLATE
 #endif
-#elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX)
+#elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX) || defined(__MVS__)
 #define CLANG_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
 #define CLANG_TEMPLATE_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
 #define CLANG_EXPORT_TEMPLATE

llvm/include/llvm/Support/Compiler.h

@@ -197,7 +197,7 @@
 #define LLVM_EXPORT_TEMPLATE
 #endif
 #define LLVM_ABI_EXPORT __declspec(dllexport)
-#elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX)
+#elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX) || defined(__MVS__)
 #define LLVM_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
 #define LLVM_TEMPLATE_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
 #define LLVM_EXPORT_TEMPLATE