#
#   Universite catholique de Louvain
#   CEREM : Centre for research in mechatronics
#   http://www.robotran.be
#   Contact : info@robotran.be
#
# Authors: Nicolas Docquier, Nicolas Van der Noot, Timothee Habra, Olivier Lantsoght
#
# CMake for compiling a simple robotran project in C
#

# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                        PROJECT SPECIFIC OPTIONS
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# possibilities: straight ; circle
set( WALKER_VERSION "straight" )

# 0: normal run ; 1: evaluation run ; 2: test opti ; 3: BioRob opti ; 4: MPI opti
set( MAIN_RUN 0 )

# speed reference [m/s]
if (NOT CMAKE_V_REF)
	set (CMAKE_V_REF 1.0)
endif ( )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                       PROJECT MAIN CONFIGURATIONS
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# CMake minimum version
if (UNIX)
    cmake_minimum_required(VERSION 2.8.7)
else()
    cmake_minimum_required(VERSION 3.4)
endif ()

# project name
project (humanoid_walker)

# project configuration
set( CMAKE_C_FLAGS_RELEASE   "-O3" )
set( CMAKE_CXX_FLAGS_RELEASE "-O3" )

# Variable for storing the path to Robotran common files (should be adapted depending on the location of those source)
if(NOT DEFINED ROBOTRAN_SOURCE_DIR)
	set(TRIAL_PATHS_MBSYSC
		${PROJECT_SOURCE_DIR}/../mbsysCopy
	)
	find_path(ROBOTRAN_SOURCE_DIR mbs_common ${TRIAL_PATHS_MBSYSC} DOC "Path to the Robotran-MBsysC common files")
endif ( )

# force mbsysCopy for optimization
if ( MAIN_RUN GREATER 1 )
	set (ROBOTRAN_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../mbsysCopy")
endif ( )

# message to display the project name
message(STATUS "Processing ${PROJECT_NAME}")
message(STATUS "Walker version: ${WALKER_VERSION}")
message("MBsysC path: ${ROBOTRAN_SOURCE_DIR}")

# for Unix: display all the warnings, except the ones related to /* -- */, to unused variables and to unknown warnings
if (UNIX)
    set( CMAKE_C_FLAGS "-g -Wall -Wno-unused-but-set-variable -Wno-unused-variable -Wno-comment -Wno-unknown-warning-option" )
endif ( )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         Windows libraries
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

if (WIN32)

    # avoid warnings
    if(COMMAND cmake_policy)
        cmake_policy(SET CMP0054 NEW)
    endif()

    # Visual studio version
    if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
        if (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 18.0)
            message("Visual Studio version set to VS2012 (${CMAKE_CXX_COMPILER_VERSION})")
            set(MSVC_VERSION lib-vc2012)
        elseif (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 19.0)
            message("Visual Studio version set to VS2013 (${CMAKE_CXX_COMPILER_VERSION})")
            set(MSVC_VERSION lib-vc2013)
        else ( )
            message("Visual Studio version set to VS2015 (${CMAKE_CXX_COMPILER_VERSION})")
            set(MSVC_VERSION lib-vc2015)
        endif ( )
    else ( )
        message(FATAL_ERROR "CMake error: only Visual Studio projects can currently be used on Windows !")
    endif ( )

    ## --- WIN32 or WIN64 DETECTION --- ##
    if( CMAKE_SIZEOF_VOID_P EQUAL 8 )   # 64bit Windows
        SET(WIN_LIB_DIRECTORY win64_include_lib)
    else( )  # 32bit Windows
        SET(WIN_LIB_DIRECTORY win32_include_lib)
    endif( )

    ## ---- WINDOWS DLL FILES ---- ##

    # copy all the dll (except 'jvm.dll') used for Windows
    # these dll files are copied in the Executable directory (Debug or Release)
    file(COPY ${ROBOTRAN_SOURCE_DIR}/${WIN_LIB_DIRECTORY}/dll/ DESTINATION ${CMAKE_BINARY_DIR}/Debug)
    file(COPY ${ROBOTRAN_SOURCE_DIR}/${WIN_LIB_DIRECTORY}/dll/ DESTINATION ${CMAKE_BINARY_DIR}/Release)

    # GLFW
    file(COPY ${ROBOTRAN_SOURCE_DIR}/${WIN_LIB_DIRECTORY}/dll/GLFW/${MSVC_VERSION}/ DESTINATION ${CMAKE_BINARY_DIR}/Debug)
    file(COPY ${ROBOTRAN_SOURCE_DIR}/${WIN_LIB_DIRECTORY}/dll/GLFW/${MSVC_VERSION}/ DESTINATION ${CMAKE_BINARY_DIR}/Release)
endif ( )

SET(CMAKE_INSTALL_PREFIX  ${CMAKE_BINARY_DIR}/Debug)

set(CMAKE_MODULE_PATH ${ROBOTRAN_SOURCE_DIR}/conf)


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                    PROJECT SPECIFIC OPTIONS
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# Link to MBSysC lib already compiled
option (FLAG_SEPARATE_BUILD "Link to MBSysC lib already compiled" OFF)

# Link to symbolic files already compiled
option (FLAG_SEPARATE_SYMBOLIC "Link to symbolic files already compiled (if FLAG_SEPARATE_BUILD is ON)" OFF)

# Link to user function files already compiled
option (FLAG_SEPARATE_USER_FCT "Link to user fonction files already compiled (if FLAG_SEPARATE_BUILD is ON)" OFF)


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         Additional CMakelists.txt
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# additional CMake functions
set(CMAKE_AUX ${ROBOTRAN_SOURCE_DIR}/cmake_aux)
set(CMAKE_AUX_BIN ${PROJECT_BINARY_DIR}/cmake_aux)

add_subdirectory ( ${CMAKE_AUX}/flags/     ${CMAKE_AUX_BIN}/flags/     )
add_subdirectory ( ${CMAKE_AUX}/listing/   ${CMAKE_AUX_BIN}/listing/   )
add_subdirectory ( ${CMAKE_AUX}/libraries/ ${CMAKE_AUX_BIN}/libraries/ )
add_subdirectory ( ${CMAKE_AUX}/make_opt/  ${CMAKE_AUX_BIN}/make_opt/  )

# symbolic path
set ( SYMBOLIC_PATH symbolicR/${WALKER_VERSION} )

# uncomment to include the real-time libraries by default
# real-time when not performing an optimization
if ( MAIN_RUN LESS 2 )
	option (FLAG_REAL_TIME "Real time" ON)
	option (FLAG_JAVA "Real time (Java 3D visualization)" OFF)
	option (FLAG_OPEN_GL "Real time (OpenGL 3D visualization)" ON)
endif ( )

# CMake functions
release_debug()
make_options()

# MBsysC files to compile
if (NOT FLAG_SEPARATE_BUILD)
    add_subdirectory( ${ROBOTRAN_SOURCE_DIR}/mbs_common ${CMAKE_CURRENT_BINARY_DIR}/mbs_common )
    flags_check() #TODO move to mbsysC cmake
    definitions()
endif ( )

# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                             EXTRA LIBRARIES
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# MPI library
if ( MAIN_RUN EQUAL 4 )
	find_package(MPI REQUIRED)
	if (MPI_FOUND)
		include_directories (${MPI_INCLUDE_PATH})
		message( "\n  >> main: MPI found")
	else ( )
		message( "\n  >> main: MPI not found")
	endif ( )
	message("      -> INC : ${MPI_INCLUDE_PATH}")
	message("      -> LIB : ${MPI_LIBRARIES}\n")
endif ( )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         FLAGS RELATED FUNCTIONS
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# evaluation run
if ( MAIN_RUN EQUAL 1 )
	add_definitions( -D EVAL_RUN )
	message(STATUS "Evaluation run !")
endif (  )

# optimization run
if ( MAIN_RUN GREATER 1 )
	add_definitions( -D OPTI_RUN )
	message(STATUS "Running optimization !")
endif (  )

# MPI optimization
if ( MAIN_RUN EQUAL 4 )
	add_definitions( -D OPTI_MPI )
	message(STATUS "MPI computation !")
endif (  )

# Windows M_PI definitions
if (WIN32)
    add_definitions(-D _USE_MATH_DEFINES)
endif (WIN32)

# Robotran simulation flag
add_definitions ( -D ROBOTRAN_SIMU )

# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                           USER ABSOLUTE PATHS
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# name of the build folder (relative to main CMakelists.txt)
set(BUILD_PATH ${PROJECT_BINARY_DIR})
file(RELATIVE_PATH BUILD_PATH_REL ${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})

# upper-case letters of COMAN version
string(TOUPPER ${WALKER_VERSION} WALKER_VERSION_UPPER)

# configure a header file to pass some of the CMake settings to the source code
configure_file (
    "${ROBOTRAN_SOURCE_DIR}/conf/cmake_config.h.in"
    "${PROJECT_BINARY_DIR}/conf/cmake_config.h"
)

configure_file (
    "${PROJECT_SOURCE_DIR}/src/conf/cmake_define.h.in"
    "${PROJECT_BINARY_DIR}/conf/cmake_define.h"
)

# 'cmake_config.h.in' is in the 'conf' folder
include_directories (${PROJECT_BINARY_DIR}/conf)


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                           LIST FILES
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
# list source files to compile
init_src()

increment_src( ${PROJECT_SOURCE_DIR}/src )


# list include directories (to find headers)
init_include()

increment_include( ${PROJECT_SOURCE_DIR} )
increment_include( ${PROJECT_SOURCE_DIR}/../symbolicR/${WALKER_VERSION} )
increment_include( ${PROJECT_SOURCE_DIR}/../userfctR)
increment_include( ${PROJECT_SOURCE_DIR}/../userFiles)

# SDL.h header
if (FLAG_PLOT)
    sdl_header_lib(project)
endif ( )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                           EXTERNAL LIBRARIES
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

## ---- PYTHON SCRIPTS FOR OPTI ---- ##

# MPI
if (MAIN_RUN EQUAL 4)
	file(COPY ${PROJECT_SOURCE_DIR}/../opti/python/mpi_res_gen.py DESTINATION ${CMAKE_BINARY_DIR})
endif ( )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         EXECUTABLE COMPILATION
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

# include these directories
include_directories (${INCLUDE_DIR})

# name of the executable
if ( MAIN_RUN GREATER 2 ) # opti cluster
	set (Executable dispatcher_opti)
else ( )
	set (Executable exe_${PROJECT_NAME})
endif ( )

# generate the executable
add_executable ( ${Executable} ${SOURCE_FILES} )


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         EXECUTABLE LINKING
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

flags_clean()

if ( FLAG_SEPARATE_BUILD ) # find MBSysC dynamic libraries

    find_path(LibRobotranC_DIR LibRobotranCConfig.cmake "${ROBOTRAN_SOURCE_DIR}/build")
    find_package( LibRobotranC REQUIRED )
    target_link_libraries( ${Executable} ${LIB_MBSYSC_MODULES} ${LIB_MBSYSC_LOAD} ${LIB_MBSYSC_UTILITIES} )
    add_definitions(${LIB_MBSYSC_DEFINITIONS})

    if (WIN32)

        ## ---- WINDOWS DLL FILES ---- ##

        # find dll directories (Debug or Release)
        get_filename_component(LIB_MBSYSC_MODULES_DIR ${LIB_MBSYSC_MODULES} DIRECTORY)
        get_filename_component(LIB_MBSYSC_LOAD_DIR ${LIB_MBSYSC_LOAD} DIRECTORY)
        get_filename_component(LIB_MBSYSC_UTILITIES_DIR ${LIB_MBSYSC_UTILITIES} DIRECTORY)
        get_filename_component(LIB_MBSYSC_REALTIME_DIR ${LIB_MBSYSC_REALTIME} DIRECTORY)

        # copy all the dll used for Windows
        # these dll files are copied in the Executable directory (Debug)
        file(COPY ${LIB_MBSYSC_MODULES_DIR}\\MBsysC_module.dll DESTINATION ${CMAKE_BINARY_DIR}\\Debug)
        file(COPY ${LIB_MBSYSC_LOAD_DIR}\\MBsysC_loadXML.dll DESTINATION ${CMAKE_BINARY_DIR}\\Debug)
        file(COPY ${LIB_MBSYSC_UTILITIES_DIR}\\MBsysC_utilities.dll DESTINATION ${CMAKE_BINARY_DIR}\\Debug)
        file(COPY ${LIB_MBSYSC_REALTIME_DIR}\\MBsysC_realtime.dll DESTINATION ${CMAKE_BINARY_DIR}\\Debug)

    endif ( )

else ( )

    target_link_libraries( ${Executable} MBsysC_loadXML MBsysC_module )

    if (NOT FLAG_SHARED_LIB)

        # find MBSysC static libraries
        target_link_libraries( ${Executable} MBsysC_numerics MBsysC_realtime MBsysC_utilities )

        #user functions library
        target_link_libraries ( ${Executable} Project_userfct )
        target_link_libraries ( ${Executable} Project_symbolic )

        #Libxml2 and GSL external libraries
        target_link_libraries ( ${Executable} ${LIBXML2_LIBRARIES} ${GSL_LIBRARIES} )

        # SDL external library
        if (FLAG_PLOT)
            target_link_libraries ( ${Executable} ${SDL2_LIBRARIES} ${SDL2TTF_LIBRARIES} )
        endif ( )

        # Java external library
        if (FLAG_JAVA)
            target_link_libraries ( ${Executable} ${JNI_LIBRARIES} )
        endif ( )

        # OpenGL external library
        if (FLAG_OPEN_GL)

        endif ( )
               
    endif ( )

endif ( )

include_directories(${LIB_MBSYSC_INCLUDE_DIRS})

# symbolic files
if ( FLAG_SEPARATE_SYMBOLIC )
	if( UNIX )
		file(COPY ${PROJECT_SOURCE_DIR}/../${SYMBOLIC_PATH}/build/libProject_symbolic.so DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/symbolicR)
	else() # Windows (to be tested)
		file(COPY ${PROJECT_SOURCE_DIR}/../${SYMBOLIC_PATH}/build/Debug/libProject_symbolic.dll DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/Debug)
	endif()
else ( )
    add_subdirectory( ${PROJECT_SOURCE_DIR}/../${SYMBOLIC_PATH} ${CMAKE_CURRENT_BINARY_DIR}/symbolicR)
endif ( )

# user fonction files
if ( FLAG_SEPARATE_USER_FCT )
	if( UNIX )
		file(COPY ${PROJECT_SOURCE_DIR}/../userfctR/build/libProject_userfct.so DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/userfctR)
	else() # Windows (to be tested)
		file(COPY ${PROJECT_SOURCE_DIR}/../userfctR/build/Debug/libProject_userfct.dll DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/Debug)
	endif()
else ( )
    add_subdirectory( ${PROJECT_SOURCE_DIR}/../userfctR ${CMAKE_CURRENT_BINARY_DIR}/userfctR)
endif ( )

# dynamic linking library
if (UNIX)
    target_link_libraries ( ${Executable} dl )
endif ( )

# math external library (for Unix)
if (UNIX)
    target_link_libraries ( ${Executable} m )
endif ( )

# MPI library
if ( MAIN_RUN EQUAL 4 )
	target_link_libraries (${Executable} ${MPI_LIBRARIES})
endif ( )