CMake: improve handling of options (AMReX-Codes#946)

* CMake: move general setup operations out of AMReX_Options.cmake

* CMake: better handling of option inter-dependencies via cmake_dependent_option

* CMake: refactor AMReX_Options.cmake

* Update Tools/CMake/AMReX_Options.cmake

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

* Update CMakeLists.txt

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

* Update Tools/CMake/AMReX_Options.cmake

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

CMakeLists.txt

@@ -74,6 +74,20 @@ if ( CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR AND CMAKE_INSTALL_PREFIX_INITI
           CACHE PATH "AMReX installation directory" FORCE)
 endif ()
 
+message(STATUS "AMReX installation directory: ${CMAKE_INSTALL_PREFIX}")
+
+#
+# Check if CMAKE_BUILD_TYPE is given. If not, use default
+#
+if ( NOT CMAKE_BUILD_TYPE )
+   set(CMAKE_CONFIGURATION_TYPES "Release;Debug;MinSizeRel;RelWithDebInfo")
+   set(CMAKE_BUILD_TYPE Release
+       CACHE STRING
+       "Choose the build type, e.g. Release, Debug, or RelWithDebInfo." FORCE)
+else ()
+   message(STATUS "Build type set by user to '${CMAKE_BUILD_TYPE}'.")
+endif()
+
 #
 # Include options, utilities and other stuff we need
 #

Src/Extern/SUNDIALS4/CMakeLists.txt

@@ -1,22 +1,23 @@
-if (ENABLE_FORTRAN_INTERFACES)
-   target_sources( amrex
-      PRIVATE
-      fsundials_types_mod.f90
-      fnvector_mod.f90
-      fnvector_serial_mod.f90
-      fsunmatrix_mod.f90
-      fsunmatrix_dense_mod.f90
-      fsunlinsol_mod.f90
-      fsunlinsol_dense_mod.f90
-      # ARKode interfaces
-      arkode_interface.f90
-      farkode_mod.f90
-      farkode_arkstep_mod.f90
-      # CVODE interfaces
-      cvode_interface.f90
-      fcvode_mod.f90
-      )
-endif ()
+#
+# Fortran interfaces to SUNDIALS routines
+#
+target_sources( amrex
+   PRIVATE
+   fsundials_types_mod.f90
+   fnvector_mod.f90
+   fnvector_serial_mod.f90
+   fsunmatrix_mod.f90
+   fsunmatrix_dense_mod.f90
+   fsunlinsol_mod.f90
+   fsunlinsol_dense_mod.f90
+   # ARKode interfaces
+   arkode_interface.f90
+   farkode_mod.f90
+   farkode_arkstep_mod.f90
+   # CVODE interfaces
+   cvode_interface.f90
+   fcvode_mod.f90
+   )
 
 #
 # We link to libraries and always include nvecserial (in case app code needs it)
@@ -34,7 +35,7 @@ endif ()
 find_package(SUNDIALS 4 REQUIRED COMPONENTS ${_sundials_components})
 
 foreach (_comp ${_sundials_components})
-   target_link_libraries(amrex PUBLIC SUNDIALS::${_comp})   
+   target_link_libraries(amrex PUBLIC SUNDIALS::${_comp})
 endforeach ()
 
 target_compile_definitions(amrex PUBLIC AMREX_USE_SUNDIALS_3x4x)