Fix CMake

CMakeLists.txt

@@ -21,8 +21,10 @@ cmake_minimum_required(VERSION 2.8)
 # In order to bootstrap the runtime library we need to skip
 # CMake's Fortran tests
 SET(CMAKE_Fortran_COMPILER_WORKS 1)
+
+
 set(CMAKE_Fortran_PREPROCESS_SOURCE
-  "<CMAKE_Fortran_COMPILER> -Mpreprocess <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> -o <PREPROCESSED_SOURCE>")
+    "<CMAKE_Fortran_COMPILER> -cpp <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> -o <PREPROCESSED_SOURCE>")
 
 # If we are not building as a part of LLVM, build Flang as an
 # standalone project, using LLVM as an external library:

runtime/flang/CMakeLists.txt

@@ -531,7 +531,6 @@ set_property(
 ## CMake does not handle module dependencies between Fortran files,
 ## we need to help it
 
-if (NOT MSVC)
 # State the module that the source is producing
 set_source_files_properties(
   iso_c_bind.F95
@@ -546,7 +545,6 @@ set_source_files_properties(
   PROPERTIES
   OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/iso_c_binding.mod
   )
-endif()
 
 set_target_properties(flang_static flang_shared
   PROPERTIES
@@ -577,9 +575,10 @@ add_dependencies(flang_shared
   flang2
   )
 
-target_compile_options(flang_static PRIVATE -fPIC)
-
-target_compile_options(flang_shared PRIVATE -fPIC)
+if (NOT MSVC)
+  target_compile_options(flang_static PRIVATE -fPIC)
+  target_compile_options(flang_shared PRIVATE -fPIC)
+endif()
 
 target_compile_options(flang_static PUBLIC $<$<COMPILE_LANGUAGE:Fortran>:-Mreentrant>)