Index: mlir/include/mlir/ExecutionEngine/CRunnerUtils.h
===================================================================
--- mlir/include/mlir/ExecutionEngine/CRunnerUtils.h
+++ mlir/include/mlir/ExecutionEngine/CRunnerUtils.h
@@ -20,6 +20,7 @@
 #ifdef mlir_c_runner_utils_EXPORTS
 /* We are building this library */
 #define MLIR_CRUNNERUTILS_EXPORT __declspec(dllexport)
+#define MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
 #else
 /* We are using this library */
 #define MLIR_CRUNNERUTILS_EXPORT __declspec(dllimport)
@@ -27,6 +28,7 @@
 #endif // MLIR_CRUNNERUTILS_EXPORT
 #else
 #define MLIR_CRUNNERUTILS_EXPORT
+#define MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
 #endif // _WIN32
 
 #include <cstdint>
Index: mlir/lib/ExecutionEngine/CRunnerUtils.cpp
===================================================================
--- mlir/lib/ExecutionEngine/CRunnerUtils.cpp
+++ mlir/lib/ExecutionEngine/CRunnerUtils.cpp
@@ -17,6 +17,8 @@
 #include <cinttypes>
 #include <cstdio>
 
+#ifdef MLIR_CRUNNERUTILS_DEFINE_FUNCTIONS
+
 // Small runtime support "lib" for vector.print lowering.
 // By providing elementary printing methods only, this
 // library can remain fully unaware of low-level implementation
@@ -29,3 +31,5 @@
 extern "C" void print_close() { fputs(" )", stdout); }
 extern "C" void print_comma() { fputs(", ", stdout); }
 extern "C" void print_newline() { fputc('\n', stdout); }
+
+#endif