CMakeLists.txt

cmake_policy(SET CMP0048 NEW)
project(S2E
  LANGUAGES CXX
  DESCRIPTION "S2E: Spacecraft Simulation Environment"
  VERSION 5.1.0
)

cmake_minimum_required(VERSION 3.13)

# build config
option(USE_HILS "Use HILS" OFF)
option(USE_C2A "Use C2A" OFF)
option(BUILD_64BIT "Build 64bit" OFF)
option(GOOGLE_TEST "Execute GoogleTest" OFF)

# preprocessor
if(WIN32)
  add_definitions(-DWIN32)
endif()

## set directory path
if(NOT DEFINED EXT_LIB_DIR)
  set(EXT_LIB_DIR ../ExtLibraries)
endif()
set(CSPICE_DIR ${EXT_LIB_DIR}/cspice)
set(NRLMSISE00_DIR ${EXT_LIB_DIR}/nrlmsise00)

if(NOT DEFINED FLIGHT_SW_DIR)
  set(FLIGHT_SW_DIR ../FlightSW)
endif()
if(NOT DEFINED C2A_NAME)
  set(C2A_NAME "c2a_oss")
endif()

## options to use C2A
if(USE_C2A)
  option(BUILD_64BIT OFF) # force to build with 32bit
  set(C2A_DIR ${FLIGHT_SW_DIR}/${C2A_NAME})
  message("C2A dir: ${C2A_DIR}")
  add_definitions(-DUSE_C2A)
  add_definitions(-DSILS_FW)
  #include_directories
  include_directories(${C2A_DIR}/src)
  include_directories(${S2E_CORE_DIR}/src/Interface/SpacecraftInOut)
  #add subdirectory
  add_subdirectory(${C2A_DIR} C2A)
endif()

## options to use HILS
if(USE_HILS AND WIN32)
  add_definitions(-DUSE_HILS)
  ## winsock2
  SET (CMAKE_FIND_LIBRARY_SUFFIXES ".lib")
  find_library(WS2_32_LIB ws2_32.lib)
  message("path for winsock2 is")
  message(${WS2_32_LIB})
endif()

set(S2E_DIR ${CMAKE_CURRENT_SOURCE_DIR})

## include directories
include_directories(${CSPICE_DIR}/include)
include_directories(${NRLMSISE00_DIR}/src)

## add_subdirectories
add_subdirectory(src/Simulation)
add_subdirectory(src/Environment/Global)
add_subdirectory(src/Environment/Local)
add_subdirectory(src/Dynamics)
add_subdirectory(src/Disturbance)
add_subdirectory(src/Component)
add_subdirectory(src/RelativeInformation)
add_subdirectory(src/Interface/InitInput)
add_subdirectory(src/Interface/LogOutput)
add_subdirectory(src/Interface/SpacecraftInOut)
add_subdirectory(src/Interface/HilsInOut)
add_subdirectory(src/Library/igrf)
add_subdirectory(src/Library/inih)
add_subdirectory(src/Library/math)
add_subdirectory(src/Library/nrlmsise00)
add_subdirectory(src/Library/sgp4)
add_subdirectory(src/Library/utils)
add_subdirectory(src/Library/optics)
add_subdirectory(src/Library/RelativeOrbit)
add_subdirectory(src/Library/Orbit)
add_subdirectory(src/Library/Geodesy)

set(SOURCE_FILES
  src/S2E.cpp
  src/Simulation/Case/SampleCase.cpp
  src/Simulation/Spacecraft/SampleSpacecraft/SampleSat.cpp
  src/Simulation/Spacecraft/SampleSpacecraft/SampleComponents.cpp
  src/Simulation/GroundStation/SampleGroundStation/SampleGSComponents.cpp
  src/Simulation/GroundStation/SampleGroundStation/SampleGS.cpp
)

## Create executable file
add_executable(${PROJECT_NAME} ${SOURCE_FILES})

## cspice library
if(CYGWIN)
  SET (CMAKE_FIND_LIBRARY_SUFFIXES ".so" ".a")
  set(CSPICE_LIB_DIR ${CSPICE_DIR}/cspice_cygwin/lib)
elseif(UNIX)
  if(BUILD_64BIT)
    set(CSPICE_LIB_DIR ${CSPICE_DIR}/cspice_unix64/lib)
  else()
    set(CSPICE_LIB_DIR ${CSPICE_DIR}/cspice_unix/lib)
  endif()
endif()

if(WIN32)
  SET (CMAKE_FIND_LIBRARY_SUFFIXES ".lib")
  find_library(CSPICE_LIB
    NAMES cspice.lib csupport.lib
    PATHS ${CSPICE_DIR}/cspice_msvs/lib)
else()
  find_library(CSPICE_LIB
    NAMES cspice.a csupport.a
    PATHS ${CSPICE_LIB_DIR})
endif()
if(NOT CSPICE_LIB)
  message(FATAL_ERROR "cspice not found in ${CSPICE_LIB_DIR}")
endif()
#target_link_libraries(${PROJECT_NAME} ${CSPICE_LIB})

## nrlmsise00 library
if(CYGWIN)
  SET (CMAKE_FIND_LIBRARY_SUFFIXES ".a")
  find_library(NRLMSISE00_LIB 
    NAMES libnrlmsise00.a
    PATHS ${NRLMSISE00_DIR}/lib)
elseif(UNIX)
  if(BUILD_64BIT)
    find_library(NRLMSISE00_LIB
      NAMES libnrlmsise00.a
      PATHS ${NRLMSISE00_DIR}/lib64)
  else()
    find_library(NRLMSISE00_LIB
      NAMES libnrlmsise00.a
      PATHS ${NRLMSISE00_DIR}/lib)
  endif()
elseif(WIN32)
  SET (CMAKE_FIND_LIBRARY_SUFFIXES ".lib")
  find_library(NRLMSISE00_LIB 
    NAMES libnrlmsise00.lib
    PATHS ${NRLMSISE00_DIR}/lib)
endif()
if(NOT NRLMSISE00_LIB)
  message(FATAL_ERROR "nrlmsise00 not found in ${EXT_LIB_DIR}")
endif()
#target_link_libraries(${PROJECT_NAME} ${NRLMSISE00_LIB})

## Linking libraries
set(S2E_LIBRARIES
  IGRF WRAPPER_NRLMSISE00 INIH SGP4 UTIL OPTICS RELATIVE_ORBIT_MODELS ORBIT_MODELS GEODESY MATH
)
# Initialize link
target_link_libraries(COMPONENT DYNAMICS GLOBAL_ENVIRONMENT LOCAL_ENVIRONMENT SC_IO RELATIVE_INFO ${S2E_LIBRARIES})
target_link_libraries(DYNAMICS GLOBAL_ENVIRONMENT LOCAL_ENVIRONMENT SIMULATION ${S2E_LIBRARIES})
target_link_libraries(DISTURBANCE DYNAMICS GLOBAL_ENVIRONMENT LOCAL_ENVIRONMENT ${S2E_LIBRARIES})
target_link_libraries(SIMULATION DYNAMICS GLOBAL_ENVIRONMENT LOCAL_ENVIRONMENT DISTURBANCE ${S2E_LIBRARIES})
target_link_libraries(GLOBAL_ENVIRONMENT ${CSPICE_LIB} ${S2E_LIBRARIES})
target_link_libraries(LOCAL_ENVIRONMENT GLOBAL_ENVIRONMENT ${CSPICE_LIB} ${S2E_LIBRARIES})
target_link_libraries(WRAPPER_NRLMSISE00 ${NRLMSISE00_LIB})

target_link_libraries(${PROJECT_NAME} DYNAMICS)
target_link_libraries(${PROJECT_NAME} DISTURBANCE)
target_link_libraries(${PROJECT_NAME} SIMULATION)
target_link_libraries(${PROJECT_NAME} GLOBAL_ENVIRONMENT LOCAL_ENVIRONMENT)
target_link_libraries(${PROJECT_NAME} RELATIVE_INFO)
target_link_libraries(${PROJECT_NAME} INI_ACC LOG_OUT SC_IO)
target_link_libraries(${PROJECT_NAME} COMPONENT)
target_link_libraries(${PROJECT_NAME} HILS_IO)

## C2A integration
if(USE_C2A)
  target_link_libraries(${PROJECT_NAME} C2A)
  target_link_libraries(${PROJECT_NAME} SC_IO)
endif()

## HILS
if(USE_HILS)
  target_link_libraries(${PROJECT_NAME} ${WS2_32_LIB})
  set_target_properties(${PROJECT_NAME} PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(COMPONENT PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(DYNAMICS PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(DISTURBANCE PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(SIMULATION PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(GLOBAL_ENVIRONMENT PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(LOCAL_ENVIRONMENT PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(HILS_IO PROPERTIES COMMON_LANGUAGE_RUNTIME "")
  set_target_properties(RELATIVE_INFO PROPERTIES COMMON_LANGUAGE_RUNTIME "")
endif()

## GoogleTest settings
if (NOT BUILD_64BIT)
  option(GOOGLE_TEST OFF) # GoogleTest supports 64bit only
endif()
if(GOOGLE_TEST)
  include(FetchContent)
  FetchContent_Declare(
    googletest
    GIT_REPOSITORY https://github.com/google/googletest.git
    GIT_TAG release-1.12.1
  )
  if(WIN32)
    set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
  endif()
  FetchContent_MakeAvailable(googletest)

  # Unit test
  set(TEST_PROJECT_NAME ${PROJECT_NAME}_TEST)
  set(TEST_FILES
    src/Library/math/TestQuaternion.cpp
  )
  add_executable(${TEST_PROJECT_NAME} ${TEST_FILES})
  target_link_libraries(${TEST_PROJECT_NAME} gtest gtest_main)
  target_link_libraries(${TEST_PROJECT_NAME} MATH)
  include_directories(${TEST_PROJECT_NAME})
  add_test(NAME s2e-test COMMAND ${TEST_PROJECT_NAME})
  enable_testing()
endif()


## Cmake debug
message("Cspice_LIB:  " ${CSPICE_LIB})
message("nrlmsise00_LIB:  " ${NRLMSISE00_LIB})

include(common.cmake)