diff --git a/include/LLVMSPIRVOpts.h b/include/LLVMSPIRVOpts.h
index f5e301fb8b..ee7f38e75f 100644
--- a/include/LLVMSPIRVOpts.h
+++ b/include/LLVMSPIRVOpts.h
@@ -162,11 +162,7 @@ class TranslatorOpts {
     GenKernelArgNameMD = ArgNameMD;
   }
 
-  void enableAllExtensions() {
-#define EXT(X) ExtStatusMap[ExtensionID::X] = true;
-#include "LLVMSPIRVExtensions.inc"
-#undef EXT
-  }
+  void enableAllExtensions();
 
   void enableGenArgNameMD() { GenKernelArgNameMD = true; }
 
diff --git a/lib/SPIRV/LLVMSPIRVOpts.cpp b/lib/SPIRV/LLVMSPIRVOpts.cpp
index 166c61d518..f1dfe31998 100644
--- a/lib/SPIRV/LLVMSPIRVOpts.cpp
+++ b/lib/SPIRV/LLVMSPIRVOpts.cpp
@@ -47,6 +47,12 @@
 using namespace llvm;
 using namespace SPIRV;
 
+void TranslatorOpts::enableAllExtensions() {
+#define EXT(X) ExtStatusMap[ExtensionID::X] = true;
+#include "LLVMSPIRVExtensions.inc"
+#undef EXT
+}
+
 bool TranslatorOpts::isUnknownIntrinsicAllowed(IntrinsicInst *II) const
     noexcept {
   if (!SPIRVAllowUnknownIntrinsics.has_value())