CMakeLists.txt

CMAKE_MINIMUM_REQUIRED(VERSION 3.3.0)
cmake_policy (SET CMP0045 OLD)
cmake_policy (SET CMP0046 OLD)
# Folder for custom CMake source files

SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ON)
INCLUDE(ExternalProject)
INCLUDE(CMakeDependentOption)

# =========================================================================
# Project definitions and output paths
# =========================================================================
PROJECT(PIDTS)
ENABLE_LANGUAGE(Fortran)

SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
SET(CMAKE_Fortran_MODULE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include)
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)


IF (NOT CMAKE_BUILD_TYPE)
  SET (CMAKE_BUILD_TYPE Release CACHE STRING
      "Choose the type of build, options are: Debug Release Profile."
      FORCE)
  SET_PROPERTY(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Debug Release Profile)
ENDIF (NOT CMAKE_BUILD_TYPE)

# FFLAGS depend on the compiler
GET_FILENAME_COMPONENT (Fortran_COMPILER_NAME ${CMAKE_Fortran_COMPILER} NAME)

IF (CMAKE_Fortran_COMPILER_ID MATCHES "GNU")
  # set Flags
  SET (CMAKE_Fortran_FLAGS         "${CMAKE_Fortran_FLAGS}   -fbackslash -ffree-line-length-0 -DGNU")
  SET (CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS}     -O3 ${PIDTS_INSTRUCTION} -finline-functions -fstack-arrays")
  SET (CMAKE_Fortran_FLAGS_PROFILE "${CMAKE_Fortran_FLAGS} -pg -O3 ${PIDTS_INSTRUCTION} -finline-functions -fstack-arrays")
  SET (CMAKE_Fortran_FLAGS_DEBUG   "${CMAKE_Fortran_FLAGS} -g -O0 -ggdb3 -ffpe-trap=invalid -fbounds-check -finit-real=snan -fbacktrace  -Wall")
  # add flags only for compiling not linking!
  SET (PIDTS_COMPILE_FLAGS "-xf95-cpp-input -fPIC")
ELSE()
  MESSAGE(SEND_ERROR "Unknown compiler")
ENDIF()



# =========================================================================
# MPI
# =========================================================================
  FIND_PACKAGE(MPI REQUIRED)
  IF (NOT MPI_Fortran_NO_INTERROGATE)
    FOREACH(DIR ${MPI_INCLUDE_PATH})
      INCLUDE_DIRECTORIES(${DIR})
    ENDFOREACH()
    FOREACH(DIR ${MPI_Fortran_INCLUDE_PATH})
      INCLUDE_DIRECTORIES(${DIR})
    ENDFOREACH()
    LIST(APPEND linkedlibs ${MPI_Fortran_LIBRARIES})
  ENDIF()
  MARK_AS_ADVANCED(MPI_LIBRARY MPI_EXTRA_LIBRARY) # don't show these ones
  MESSAGE(STATUS "Building PIDTS with MPI")
  MESSAGE(STATUS "MPI Compiler: " ${MPI_Fortran_COMPILER})

# =========================================================================
# PIDTS sources & targets
# =========================================================================

function(add_exec target)
  ADD_EXECUTABLE(${target} ${ARGN})
  TARGET_LINK_LIBRARIES(${target} PIDTSlibs ${linkedlibs})
  SET_TARGET_PROPERTIES(${target} PROPERTIES COMPILE_FLAGS ${PIDTS_COMPILE_FLAGS}) 
  SET_TARGET_PROPERTIES(${target} PROPERTIES LINKER_LANGUAGE Fortran)
  INSTALL(PROGRAMS ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${target} DESTINATION bin)
  STRING(TOUPPER ${target} TARGETUP)
  ADD_CUSTOM_COMMAND(TARGET ${target} POST_BUILD COMMAND ${CMAKE_COMMAND} -E cmake_echo_color --cyan "SUCCESS: ${TARGETUP} BUILD COMPLETE!")
endfunction()


# collect all F90 files needed for PIDTSlib, except the extra files below
FILE(GLOB_RECURSE src      ./SRC/PIDTS/*.f90
                           ./SRC/PIDTS/*.f
                           ./SRC/Implicit_Solver/*.f90
                           ./SRC/Implicit_Solver/*.f)

# define libs
ADD_LIBRARY(PIDTSobjs OBJECT ${src})
SET_TARGET_PROPERTIES(PIDTSobjs PROPERTIES COMPILE_FLAGS ${PIDTS_COMPILE_FLAGS}) 
ADD_LIBRARY(PIDTSlibs STATIC $<TARGET_OBJECTS:PIDTSobjs>)

add_exec(PIDTS ./SRC/main.f90)
ADD_DEPENDENCIES(PIDTS PIDTSlibs)