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


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

# possibilities: init_feet ; long_feet ; flex_feet ; short_feet
set( WALKER_VERSION "short_feet" )

# speed reference [m/s]
if (NOT CMAKE_V_REF)
	set (CMAKE_V_REF 0.65)
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 (parallelSimu)

# 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 ( )

# message to display the project name and COMAN version
message(STATUS "Processing ${PROJECT_NAME}")
message(STATUS "MBsysC path: ${ROBOTRAN_SOURCE_DIR}")
message(STATUS "CoMan version: ${WALKER_VERSION}")
message(STATUS "Speed ref: ${CMAKE_V_REF}")

# 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)
	
	# common dll
	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)

	# GLPK dll
	file(COPY ${PROJECT_SOURCE_DIR}/../mbsysCopy/extra_win/glpk/${WIN_LIB_DIRECTORY}/dll/ DESTINATION ${CMAKE_BINARY_DIR}/Debug)
	file(COPY ${PROJECT_SOURCE_DIR}/../mbsysCopy/extra_win/glpk/${WIN_LIB_DIRECTORY}/dll/ DESTINATION ${CMAKE_BINARY_DIR}/Release)

	# GLFW dll
	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 ( )

# install prefix
set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/Debug)

# find libraries paths
set(CMAKE_MODULE_PATH ${ROBOTRAN_SOURCE_DIR}/conf ${PROJECT_SOURCE_DIR}/../mbsysCopy/extra_conf)


# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#                         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/  )


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

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

# 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)


# no traditional real-time features
option (FLAG_REAL_TIME "Real time" OFF)
option (FLAG_JAVA "Real time (Java 3D visualization)" OFF)
option (FLAG_OPEN_GL "Real time (OpenGL 3D visualization)" OFF) # deactivate the generic OpenGL
option (FLAG_PLOT "Plot and interact" OFF)
option (FLAG_VISU "Visualization" OFF)

# 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()
	definitions()
endif ( )


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

# GLPK library
add_definitions( -D GLPK_LIB )
find_package( GLPK REQUIRED )
if (GLPK_FOUND)
	include_directories (${GLPK_INCLUDE_PATH})
	message( "\n  >> main: GLPK found")
else ( )
	message( "\n  >> main: GLPK not found, modify ${PROJECT_SOURCE_DIR}/../mbsysCopy/extra_conf/FindGLPK.cmake")
endif ( )

message("      -> INC : ${GLPK_INCLUDE_PATH}")
message("      -> LIB : ${GLPK_LIBRARIES}\n")


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


# debug or release
if( CMAKE_BUILD_TYPE MATCHES "Debug" )
	add_definitions( -D DEBUG_VERSION )
	message(STATUS "Debug version !")
endif( )

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

# Robotran simulation flag
add_definitions ( -D ROBOTRAN_SIMU )

# OpenGL special configuration
add_definitions(-D SEPARATE_OPEN_GL)

# Uncomment to run 2D walking simulations
# add_definitions ( -D SIMU_2D_WALKING )

# Parallel simulation
add_definitions(-D PARALLEL_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 (
	"${PROJECT_SOURCE_DIR}/../workR/src/conf/cmake_define.h.in"
	"${PROJECT_BINARY_DIR}/conf/cmake_define.h"
)

# OpenGL config
set(OPEN_GL_FILES_PATH ${PROJECT_SOURCE_DIR}/../mbsysCopy/mbs_common/mbs_realtime/open_gl/)

configure_file (
	"${OPEN_GL_FILES_PATH}/conf/cmake_open_gl_config.h.in"
	"${PROJECT_BINARY_DIR}/conf/cmake_open_gl_config.h"
)

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

# Libxml2 (for separate OpenGL)
xml_lib(main)

# OpenGL library
open_gl_lib(main)


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

increment_src( ${PROJECT_SOURCE_DIR}/src )
increment_src( ${PROJECT_SOURCE_DIR}/../userFiles/parallel )
increment_src( ${OPEN_GL_FILES_PATH} )


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

increment_include( ${PROJECT_SOURCE_DIR}/src )
increment_include( ${PROJECT_SOURCE_DIR}/../userFiles/parallel )
increment_include( ${PROJECT_SOURCE_DIR}/../userfctR )
increment_include( ${PROJECT_SOURCE_DIR}/../userFiles )
increment_include( ${PROJECT_SOURCE_DIR}/../${SYMBOLIC_PATH} )
increment_include( ${ROBOTRAN_SOURCE_DIR}/mbs_common )
increment_include( ${OPEN_GL_FILES_PATH} )

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



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

# include these directories
include_directories (${INCLUDE_DIR})

# name of the executable
set (Executable exe_${PROJECT_NAME})

# 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})

	# user function and symbolic libraries
	target_link_libraries ( ${Executable} Project_userfct )

	if ( FLAG_SEPARATE_SYMBOLIC )
		target_link_libraries ( ${Executable} ${LIB_SYMBOLIC} )
	endif ( )

	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 ( )

# link library: Libxml2 (for separate OpenGL)
target_link_libraries ( ${Executable} ${LIBXML2_LIBRARIES} )

# link library: OpenGL
target_link_libraries ( ${Executable} ${OPEN_GL_LIBS})

# include MBsysC directories
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 ( )

# GLPK library
target_link_libraries (${Executable} ${GLPK_LIBRARIES})

