diff --git a/llvm/docs/CMake.rst b/llvm/docs/CMake.rst
--- a/llvm/docs/CMake.rst
+++ b/llvm/docs/CMake.rst
@@ -598,6 +598,10 @@
 **LLVM_USE_NEWPM**:BOOL
   If enabled, use the experimental new pass manager.
 
+**LLVM_ENABLE_PLUGINS**::BOOL
+  If enabled, allows llvm to load plugins, such as LLVMgold or custom Clang
+  plugins. Default value is platform specific.
+
 CMake Caches
 ============