Index: clang-tools-extra/trunk/clang-tidy/plugin/ClangTidyPlugin.cpp
===================================================================
--- clang-tools-extra/trunk/clang-tidy/plugin/ClangTidyPlugin.cpp
+++ clang-tools-extra/trunk/clang-tidy/plugin/ClangTidyPlugin.cpp
@@ -108,6 +108,11 @@
 static int LLVM_ATTRIBUTE_UNUSED ModernizeModuleAnchorDestination =
     ModernizeModuleAnchorSource;
 
+// This anchor is used to force the linker to link the MPIModule.
+extern volatile int MPIModuleAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED MPIModuleAnchorDestination =
+  MPIModuleAnchorSource;
+
 // This anchor is used to force the linker to link the PerformanceModule.
 extern volatile int PerformanceModuleAnchorSource;
 static int LLVM_ATTRIBUTE_UNUSED PerformanceModuleAnchorDestination =