Index: llvm/include/llvm/MCA/CustomBehaviour.h
===================================================================
--- llvm/include/llvm/MCA/CustomBehaviour.h
+++ llvm/include/llvm/MCA/CustomBehaviour.h
@@ -63,7 +63,7 @@
                   const MCInstrInfo &MCII)
       : STI(STI), SrcMgr(SrcMgr), MCII(MCII) {}
 
-  virtual ~CustomBehaviour() {}
+  virtual ~CustomBehaviour();
 
   // Before the llvm-mca pipeline dispatches an instruction, it first checks
   // for any register or resource dependencies / hazards. If it doesn't find
Index: llvm/lib/MCA/CustomBehaviour.cpp
===================================================================
--- llvm/lib/MCA/CustomBehaviour.cpp
+++ llvm/lib/MCA/CustomBehaviour.cpp
@@ -16,6 +16,8 @@
 namespace llvm {
 namespace mca {
 
+CustomBehaviour::~CustomBehaviour() {}
+
 unsigned CustomBehaviour::checkCustomHazard(ArrayRef<InstRef> IssuedInst,
                                             const InstRef &IR) {
   // 0 signifies that there are no hazards that need to be waited on
Index: llvm/tools/llvm-mca/lib/AMDGPU/CMakeLists.txt
===================================================================
--- llvm/tools/llvm-mca/lib/AMDGPU/CMakeLists.txt
+++ llvm/tools/llvm-mca/lib/AMDGPU/CMakeLists.txt
@@ -6,6 +6,7 @@
 set(LLVM_LINK_COMPONENTS
   AMDGPU
   Core
+  MCA
   Support
   )