diff --git a/flang/cmake/modules/CMakeLists.txt b/flang/cmake/modules/CMakeLists.txt
--- a/flang/cmake/modules/CMakeLists.txt
+++ b/flang/cmake/modules/CMakeLists.txt
@@ -27,6 +27,10 @@
   "${FLANG_SOURCE_DIR}/include"
   "${FLANG_BINARY_DIR}/include"
   )
+configure_file(
+  ${CMAKE_CURRENT_SOURCE_DIR}/FlangConfig.cmake.in
+  ${flang_cmake_builddir}/FlangConfig.cmake
+  @ONLY)
 configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/FlangConfigVersion.cmake.in
   ${flang_cmake_builddir}/FlangConfigVersion.cmake