diff --git a/llvm/lib/Target/M68k/M68kAsmPrinter.cpp b/llvm/lib/Target/M68k/M68kAsmPrinter.cpp
--- a/llvm/lib/Target/M68k/M68kAsmPrinter.cpp
+++ b/llvm/lib/Target/M68k/M68kAsmPrinter.cpp
@@ -65,6 +65,6 @@
 
 void M68kAsmPrinter::emitEndOfAsmFile(Module &M) {}
 
-extern "C" void LLVMInitializeM68kAsmPrinter() {
+extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeM68kAsmPrinter() {
   RegisterAsmPrinter<M68kAsmPrinter> X(getTheM68kTarget());
 }
diff --git a/llvm/lib/Target/M68k/M68kTargetMachine.cpp b/llvm/lib/Target/M68k/M68kTargetMachine.cpp
--- a/llvm/lib/Target/M68k/M68kTargetMachine.cpp
+++ b/llvm/lib/Target/M68k/M68kTargetMachine.cpp
@@ -28,7 +28,7 @@
 
 #define DEBUG_TYPE "m68k"
 
-extern "C" void LLVMInitializeM68kTarget() {
+extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeM68kTarget() {
   RegisterTargetMachine<M68kTargetMachine> X(getTheM68kTarget());
 }
 
diff --git a/llvm/lib/Target/M68k/MCTargetDesc/M68kMCTargetDesc.cpp b/llvm/lib/Target/M68k/MCTargetDesc/M68kMCTargetDesc.cpp
--- a/llvm/lib/Target/M68k/MCTargetDesc/M68kMCTargetDesc.cpp
+++ b/llvm/lib/Target/M68k/MCTargetDesc/M68kMCTargetDesc.cpp
@@ -106,7 +106,7 @@
   return new M68kInstPrinter(MAI, MII, MRI);
 }
 
-extern "C" void LLVMInitializeM68kTargetMC() {
+extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeM68kTargetMC() {
   Target &T = getTheM68kTarget();
 
   // Register the MC asm info.
diff --git a/llvm/lib/Target/M68k/TargetInfo/M68kTargetInfo.cpp b/llvm/lib/Target/M68k/TargetInfo/M68kTargetInfo.cpp
--- a/llvm/lib/Target/M68k/TargetInfo/M68kTargetInfo.cpp
+++ b/llvm/lib/Target/M68k/TargetInfo/M68kTargetInfo.cpp
@@ -21,7 +21,7 @@
 }
 } // namespace llvm
 
-extern "C" void LLVMInitializeM68kTargetInfo() {
+extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeM68kTargetInfo() {
   RegisterTarget<Triple::m68k, /*HasJIT=*/true> X(
       getTheM68kTarget(), "m68k", "Motorola 68000 family", "M68k");
 }