CMakeLists.txt

cmake_minimum_required(VERSION 3.12...3.28)

# set project name
project(opensaft
	VERSION 1.0
	DESCRIPTION "Open source implementation of 3D SAFT"
	LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)

if (NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE RelWithDebInfo)
endif()

option(OPENSAFT_CUDA_SUPPORT "Enable CUDA support" OFF)
option(OPENSAFT_TESTING "Build unit tests" ON)
option(OPENSAFT_GUI "build graphical user interface alongside" OFF)

# prepare for cuda compilation
if (OPENSAFT_CUDA_SUPPORT)
	enable_language(CUDA)
	find_package(CUDA REQUIRED QUIET)
	include(FindCUDA)
	INCLUDE_DIRECTORIES(/opt/cuda/include include)
	set(CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE OFF)
endif()

set(BUILD_SHARED_LIBS OFF)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON )
set(CMAKE_CUDA_FLAGS "${CUDA_CUDA_FLAGS} -rdc=true -Xptxas -v -O2")
set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS}; -x cu -rdc=true -ftz=false -prec-div=true -prec-sqrt=true -g)

# add path cmake/modules to search directory
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")

# find dependencies (most of them are handled through FetchContent)
find_library(H5CPP_LIB hdf5_cpp)
find_library(H5_LIB hdf5) # todo this sounds fishy that

# main library holding the backbone of the application
add_library(opensaft STATIC "")

add_subdirectory(src/)

target_link_libraries(opensaft PUBLIC
)

target_include_directories(opensaft PUBLIC
	${CMAKE_SOURCE_DIR}/src
)

if (OPENSAFT_GUI)

	add_library(opensaft-gui)

	find_package(ImGUI REQUIRED)
	find_package(GLFW REQUIRED)
	find_package(OpenGL REQUIRED)
	find_package(ImPlot REQUIRED)
	find_package(ImGUIFileDialog REQUIRED)
	find_package(Backward REQUIRED)


	target_link_libraries(opensaft-gui PUBLIC
		${ImGUI_LIBRARIES}
		${implot_LIBRARIES}
		${GLFW_LIBRARIES}
		${cvolume_LIBRARIES}
		${ImGUIFileDialog_LIBRARIES}
		${backward_LIBRARIES}
	)

	target_include_directories(opensaft PUBLIC
		${CMAKE_SOURCE_DIR}/src
		${ImGUI_INCLUDE_DIR}
		${ImPlot_INCLUDE_DIR}
		${ImGUIFileDialog_INCLUDE_DIR}
		${OPENGL_INCLUDE_DIRS}
		${GLFW3_INCLUDE_DIR}
		${cvolume_INCLUDE_DIR}
		${backward_INCLUDE_DIR}
	)


	# add an executable for the main graphical user interface
	add_executable(OpensaftGui src/main.cpp)
	if (OPENSAFT_CUDA_SUPPORT)
		set_property(TARGET OpensaftGui PROPERTY CUDA_SEPARABLE_COMPILATION ON)
		set_property(TARGET OpensaftGui PROPERTY CUDA_ARCHITECTURES 50 75 86)
	endif()
	target_link_libraries(OpensaftGui PUBLIC opensaft-gui)

	install(TARGETS OpensaftGui DESTINATION bin)

endif (OPENSAFT_GUI)


find_library(TERM_LIB curses)

if (OPENSAFT_TESTING)
	add_subdirectory(tests)
endif()