From af7f73f3796356b987b41f14a2fed426913bbd4b Mon Sep 17 00:00:00 2001
From: Martin Diehl <mail@martin-diehl.net>
Date: Wed, 27 Dec 2023 15:07:04 +0100
Subject: [PATCH 1/2] CMake knows compiler flags

---
 CMakeLists.txt                 | 2 ++
 cmake/Compiler-GNU.cmake       | 3 ---
 cmake/Compiler-Intel.cmake     | 3 ---
 cmake/Compiler-IntelLLVM.cmake | 3 ---
 cmake/Compiler-LLVMFlang.cmake | 2 --
 5 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b630f7e46..d0f50affb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,8 @@ else()
 endif()
 add_definitions("-D${DAMASK_SOLVER}")
 
+set(CMAKE_Fortran_PREPROCESS "ON")
+
 # EXPERIMENTAL: This might help to detect HDF5 and FFTW3 in the future if PETSc is not aware of them
 set(ENV{PKG_CONFIG_PATH} "$ENV{PETSC_DIR}/$ENV{PETSC_ARCH}/externalpackages:$ENV{PKG_CONFIG_PATH}")
 pkg_check_modules(HDF5 hdf5)
diff --git a/cmake/Compiler-GNU.cmake b/cmake/Compiler-GNU.cmake
index ee58f8cc7..61ec2143b 100644
--- a/cmake/Compiler-GNU.cmake
+++ b/cmake/Compiler-GNU.cmake
@@ -19,9 +19,6 @@ set (STANDARD_CHECK "-std=f2018 -pedantic-errors" )
 
 #------------------------------------------------------------------------------------------------
 # Fine tuning compilation options
-set (COMPILE_FLAGS "${COMPILE_FLAGS} -cpp")
-# preprocessor
-
 set (COMPILE_FLAGS "${COMPILE_FLAGS} -fPIE")
 # position independent code
 
diff --git a/cmake/Compiler-Intel.cmake b/cmake/Compiler-Intel.cmake
index 2182459ed..59ba6d74d 100644
--- a/cmake/Compiler-Intel.cmake
+++ b/cmake/Compiler-Intel.cmake
@@ -22,9 +22,6 @@ set (LINKER_FLAGS   "${LINKER_FLAGS} -shared-intel")
 
 #------------------------------------------------------------------------------------------------
 # Fine tuning compilation options
-set (COMPILE_FLAGS "${COMPILE_FLAGS} -fpp")
-# preprocessor
-
 set (COMPILE_FLAGS "${COMPILE_FLAGS} -no-ftz")
 # disable flush underflow to zero, will be set if -O[1,2,3]
 
diff --git a/cmake/Compiler-IntelLLVM.cmake b/cmake/Compiler-IntelLLVM.cmake
index 4cdd2588d..3749b925f 100644
--- a/cmake/Compiler-IntelLLVM.cmake
+++ b/cmake/Compiler-IntelLLVM.cmake
@@ -24,9 +24,6 @@ set (LINKER_FLAGS   "${LINKER_FLAGS} -shared-intel -fc=ifx")
 
 #------------------------------------------------------------------------------------------------
 # Fine tuning compilation options
-set (COMPILE_FLAGS "${COMPILE_FLAGS} -fpp")
-# preprocessor
-
 set (COMPILE_FLAGS "${COMPILE_FLAGS} -no-ftz")
 # disable flush underflow to zero, will be set if -O[1,2,3]
 
diff --git a/cmake/Compiler-LLVMFlang.cmake b/cmake/Compiler-LLVMFlang.cmake
index c6b0405bc..ff0bdf6e8 100644
--- a/cmake/Compiler-LLVMFlang.cmake
+++ b/cmake/Compiler-LLVMFlang.cmake
@@ -7,6 +7,4 @@ endif ()
 
 #------------------------------------------------------------------------------------------------
 # Fine tuning compilation options
-set (COMPILE_FLAGS "${COMPILE_FLAGS} -cpp")
-# preprocessor
 

From e4e0840479a7d31c47a09c6d01e04405c65ccbef Mon Sep 17 00:00:00 2001
From: Martin Diehl <mail@martin-diehl.net>
Date: Wed, 27 Dec 2023 16:09:40 +0100
Subject: [PATCH 2/2] simplified

---
 CMakeLists.txt                 | 9 +++------
 cmake/Compiler-LLVMFlang.cmake | 2 ++
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0f50affb..a8e551373 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,27 +93,24 @@ if(CMAKE_BUILD_TYPE STREQUAL "SYNTAXONLY")
 endif()
 
 
-list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 if   (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
-    include(Compiler-GNU)
     set(Fortran_COMPILER_VERSION_MIN 9.1)
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
-    include(Compiler-Intel)
     set(Fortran_COMPILER_VERSION_MIN 19)
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "IntelLLVM")
-    include(Compiler-IntelLLVM)
     set(Fortran_COMPILER_VERSION_MIN 19)
 elseif(CMAKE_Fortran_COMPILER_ID STREQUAL "LLVMFlang")
-    include(Compiler-LLVMFlang)
     set(Fortran_COMPILER_VERSION_MIN 19)
 else()
     message(FATAL_ERROR "Compiler '${CMAKE_Fortran_COMPILER_ID}' not supported")
 endif()
-
 if(CMAKE_Fortran_COMPILER_VERSION VERSION_LESS Fortran_COMPILER_VERSION_MIN)
     message(FATAL_ERROR "Version '${CMAKE_Fortran_COMPILER_VERSION}' of '${CMAKE_Fortran_COMPILER_ID}' is not supported")
 endif()
 
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+include("Compiler-${CMAKE_Fortran_COMPILER_ID}")
+
 file(STRINGS "$ENV{PETSC_DIR}/$ENV{PETSC_ARCH}/lib/petsc/conf/petscvariables" PETSC_EXTERNAL_LIB REGEX "PETSC_EXTERNAL_LIB_BASIC = .*$?")
 string(REPLACE "PETSC_EXTERNAL_LIB_BASIC = " "" PETSC_EXTERNAL_LIB "${PETSC_EXTERNAL_LIB}")
 message("PETSC_EXTERNAL_LIB:\n${PETSC_EXTERNAL_LIB}\n")
diff --git a/cmake/Compiler-LLVMFlang.cmake b/cmake/Compiler-LLVMFlang.cmake
index ff0bdf6e8..b28df7027 100644
--- a/cmake/Compiler-LLVMFlang.cmake
+++ b/cmake/Compiler-LLVMFlang.cmake
@@ -5,6 +5,8 @@ if (OPENMP)
   set (OPENMP_FLAGS "-fopenmp")
 endif ()
 
+set (STANDARD_CHECK "-std=f2018 -pedantic" )
+
 #------------------------------------------------------------------------------------------------
 # Fine tuning compilation options