1 files changed, 8 insertions, 2 deletions
diff --git a/llvm/examples/Kaleidoscope/Chapter4/toy.cpp b/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
index 3bd077b6e38..cf7d6c2bee0 100644
--- a/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
@@ -650,14 +650,20 @@ static void MainLoop() {
 // "Library" functions that can be "extern'd" from user code.
 //===----------------------------------------------------------------------===//
 
+#ifdef LLVM_ON_WIN32
+#define DLLEXPORT __declspec(dllexport)
+#else
+#define DLLEXPORT
+#endif
+
 /// putchard - putchar that takes a double and returns 0.
-extern "C" double putchard(double X) {
+extern "C" DLLEXPORT double putchard(double X) {
   fputc((char)X, stderr);
   return 0;
 }
 
 /// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C" double printd(double X) {
+extern "C" DLLEXPORT double printd(double X) {
   fprintf(stderr, "%f\n", X);
   return 0;
 }