Ensure test-suite is working from a build dir

Author: Meinersbur

flang/CMakeLists.txt

@@ -506,7 +506,12 @@ include(GetClangResourceDir)
 get_clang_resource_dir(HEADER_BINARY_DIR PREFIX ${LLVM_LIBRARY_OUTPUT_INTDIR}/.. SUBDIR include)
 configure_file(
   ${FLANG_SOURCE_DIR}/include/flang/ISO_Fortran_binding.h
-  ${HEADER_BINARY_DIR}/ISO_Fortran_binding.h)
+  ${HEADER_BINARY_DIR}/ISO_Fortran_binding.h COPYONLY)
+
+# llvm-test-suite fails if it does not find the the file in this location.
+configure_file(
+  ${FLANG_SOURCE_DIR}/include/flang/ISO_Fortran_binding.h
+  ${LLVM_RUNTIME_OUTPUT_INTDIR}/../include/flang COPYONLY)
 
 # And also install it into the install area
 get_clang_resource_dir(HEADER_INSTALL_DIR SUBDIR include)