diff --git a/llvm/utils/gn/secondary/lldb/source/Plugins/BUILD.gn b/llvm/utils/gn/secondary/lldb/source/Plugins/BUILD.gn
--- a/llvm/utils/gn/secondary/lldb/source/Plugins/BUILD.gn
+++ b/llvm/utils/gn/secondary/lldb/source/Plugins/BUILD.gn
@@ -182,6 +182,11 @@
     "SymbolVendorWasm",
   ],
 
+  [
+    "//lldb/source/Plugins/SymbolVendor/PECOFF",
+    "SymbolVendorPECOFF",
+  ],
+
   [
     "//lldb/source/Plugins/TypeSystem/Clang",
     "TypeSystemClang",
diff --git a/llvm/utils/gn/secondary/lldb/source/Plugins/SymbolVendor/PECOFF/BUILD.gn b/llvm/utils/gn/secondary/lldb/source/Plugins/SymbolVendor/PECOFF/BUILD.gn
new file mode 100644
--- /dev/null
+++ b/llvm/utils/gn/secondary/lldb/source/Plugins/SymbolVendor/PECOFF/BUILD.gn
@@ -0,0 +1,14 @@
+static_library("PECOFF") {
+  output_name = "lldbPluginSymbolVendorPECOFF"
+  configs += [ "//llvm/utils/gn/build:lldb_code" ]
+  deps = [
+    "//lldb/source/Core",
+    "//lldb/source/Host",
+    "//lldb/source/Plugins/ObjectFile/PECOFF",
+    "//lldb/source/Symbol",
+  ]
+
+  # Reaches into Plugins/ObjectFile/PECOFF.
+  include_dirs = [ "//lldb/source" ]
+  sources = [ "SymbolVendorPECOFF.cpp" ]
+}