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-rw-r--r--Modules/Compiler/Flang-Fortran.cmake3
1 files changed, 3 insertions, 0 deletions
diff --git a/Modules/Compiler/Flang-Fortran.cmake b/Modules/Compiler/Flang-Fortran.cmake
index f0e61d8..de0484e 100644
--- a/Modules/Compiler/Flang-Fortran.cmake
+++ b/Modules/Compiler/Flang-Fortran.cmake
@@ -11,3 +11,6 @@ set(CMAKE_Fortran_FORMAT_FIXED_FLAG "-ffixed-form")
set(CMAKE_Fortran_FORMAT_FREE_FLAG "-ffree-form")
set(CMAKE_Fortran_MODDIR_FLAG "-J")
+
+set(CMAKE_Fortran_COMPILE_OPTIONS_PREPROCESS_ON "-cpp")
+set(CMAKE_Fortran_COMPILE_OPTIONS_PREPROCESS_OFF "-nocpp")