diff --git a/llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/TargetProcess/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/TargetProcess/BUILD.gn
index 2be6454264c711..cfcda63fb3f484 100644
--- a/llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/TargetProcess/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/TargetProcess/BUILD.gn
@@ -5,6 +5,7 @@ static_library("TargetProcess") {
     "//llvm/lib/Support",
   ]
   sources = [
+    "ExecutorSharedMemoryMapperService.cpp",
     "JITLoaderGDB.cpp",
     "OrcRTBootstrap.cpp",
     "RegisterEHFrames.cpp",
@@ -13,4 +14,7 @@ static_library("TargetProcess") {
     "SimpleRemoteEPCServer.cpp",
     "TargetExecutionUtils.cpp",
   ]
+  if (current_os == "linux") {
+    libs = [ "rt" ]
+  }
 }
diff --git a/llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn
index 8e4f11c076252b..330ae8aedb60ef 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn
@@ -28,6 +28,7 @@ unittest("OrcJITTests") {
     "OrcTestCommon.cpp",
     "RTDyldObjectLinkingLayerTest.cpp",
     "ResourceTrackerTest.cpp",
+    "SharedMemoryMapperTest.cpp",
     "SimpleExecutorMemoryManagerTest.cpp",
     "SimplePackedSerializationTest.cpp",
     "SymbolStringPoolTest.cpp",