Index: cmake/modules/AddLLVM.cmake
===================================================================
--- cmake/modules/AddLLVM.cmake
+++ cmake/modules/AddLLVM.cmake
@@ -680,7 +680,9 @@
   elseif(ARG_BUILDTREE_ONLY)
     set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS_BUILDTREE_ONLY ${name})
   else()
-    if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LTO" OR
+    if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR
+        ${name} STREQUAL "LTO" OR
+        ${name} STREQUAL "LLVM-C" OR
         ${name} STREQUAL "Remarks" OR
         (LLVM_LINK_LLVM_DYLIB AND ${name} STREQUAL "LLVM"))