diff --git a/llvm/tools/llvm-config/CMakeLists.txt b/llvm/tools/llvm-config/CMakeLists.txt
--- a/llvm/tools/llvm-config/CMakeLists.txt
+++ b/llvm/tools/llvm-config/CMakeLists.txt
@@ -76,6 +76,8 @@
 # Add the dependency on the generation step.
 add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
 
+add_dependencies(llvm-config LLVMFrontendOpenACC)
+
 if(CMAKE_CROSSCOMPILING AND NOT LLVM_CONFIG_PATH)
   build_native_tool(llvm-config LLVM_CONFIG_PATH)
   set(LLVM_CONFIG_PATH "${LLVM_CONFIG_PATH}" CACHE STRING "")