diff --git a/lib/Target/X86/MCTargetDesc/CMakeLists.txt b/lib/Target/X86/MCTargetDesc/CMakeLists.txt
new file mode 100644
index 00000000000..50be61cf6b0
--- /dev/null
+++ b/lib/Target/X86/MCTargetDesc/CMakeLists.txt
@@ -0,0 +1,2 @@
+add_llvm_library(LLVMX86Desc X86TargetDesc.cpp)
+