# Choose some code based on whether we're parallel or serial.
if (USE_MPI)
  set(VER parallel)
else()
  set(VER serial)
endif()

# Compile flags.
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
  if (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -ffree-form -ffree-line-length-none")
    if(CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL "10")
    set(CMAKE_Fortran_FLAGS_DEBUG "-fallow-argument-mismatch")
    set(CMAKE_Fortran_FLAGS_RELEASE "-fallow-argument-mismatch")
    endif()
  else()
    # Intel
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fpe0 -traceback -r8 -i4 -free -CB")
  endif()
else()
  if (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -ffree-form -ffree-line-length-none")
        if(CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL "10")
    set(CMAKE_Fortran_FLAGS_DEBUG "-fallow-argument-mismatch")
    set(CMAKE_Fortran_FLAGS_RELEASE "-fallow-argument-mismatch")
    endif()
  else()
    # Intel
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fpe0 -r8 -i4 -free")
  endif()
endif()

add_subdirectory(t2_solver_interface)
add_subdirectory(mpi_interface)
include_directories(${PROJECT_BINARY_DIR}/src/t2_solver_interface
        ${PROJECT_BINARY_DIR}/src/mpi_interface)
set(interface_libraries toughlib_t2_solver_core)
if (USE_PETSC)
   add_subdirectory(petsc_interface)
   include_directories(${PROJECT_BINARY_DIR}/src/petsc_interface ${PETSC_INCLUDES})
   set(interface_libraries ${interface_libraries}
                           toughlib_petsc_core)
endif()
if (USE_MPI)
   add_subdirectory(metis_interface)
   include_directories(${PROJECT_BINARY_DIR}/src/metis_interface)
   set(interface_libraries ${interface_libraries}
                           toughlib_metis_core)
   add_subdirectory(aztec_interface)
   include_directories(${PROJECT_BINARY_DIR}/src/aztec_interface)
set(interface_libraries ${interface_libraries} toughlib_aztec_core)
endif()

# Solver interface
add_library(toughlib_solver_core solver_core.f90)
target_link_libraries(toughlib_solver_core ${interface_libraries} ${TOUGHLIB_TPL_LIB})
install(TARGETS toughlib_solver_core DESTINATION lib)
install(FILES ${PROJECT_BINARY_DIR}/src/solver_core.mod DESTINATION include)