--- llvm-11.0.1.src/tools/flang/CMakeLists.txt.orig	2020-12-18 20:57:38.000000000 +0100
+++ llvm-11.0.1.src/tools/flang/CMakeLists.txt	2021-01-22 19:02:18.090511526 +0100
@@ -183,8 +183,8 @@
   set(FLANG_BINARY_DIR ${CMAKE_BINARY_DIR}/tools/flang)
   set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}")
   if (LINK_WITH_FIR)
-    set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/../mlir/include ) # --src-root
-    set(MLIR_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/../mlir/include ) # --includedir
+    set(MLIR_MAIN_SRC_DIR ${LLVM_MAIN_SRC_DIR}/tools/mlir/include ) # --src-root
+    set(MLIR_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/tools/mlir/include ) # --includedir
     set(MLIR_TABLEGEN_OUTPUT_DIR ${CMAKE_BINARY_DIR}/tools/mlir/include)
     set(MLIR_TABLEGEN_EXE $<TARGET_FILE:mlir-tblgen>)
     include_directories(SYSTEM ${MLIR_INCLUDE_DIR})