cmake_minimum_required(VERSION 3.18)

set(LIBSGM_ROOT_DIR ${PROJECT_SOURCE_DIR})
set(LIBSGM_INCLUDE_DIR ${LIBSGM_ROOT_DIR}/include)

# create project
set(PROJECT_NAME sgm)
project(${PROJECT_NAME} LANGUAGES CXX CUDA)

# dependent packages
find_package(CUDAToolkit REQUIRED)

if(BUILD_OPENCV_WRAPPER)
	find_package(OpenCV REQUIRED core)
endif()

# library type
set(SGM_LIB_TYPE STATIC)
if(LIBSGM_SHARED)
	set(SGM_LIB_TYPE SHARED)
endif()

# target configuration
file(GLOB SRCS ./*.cpp ./*.cu ./*.h* ${LIBSGM_INCLUDE_DIR}/*.h*)
add_library(${PROJECT_NAME} ${SGM_LIB_TYPE})
target_sources(${PROJECT_NAME} PRIVATE ${SRCS})
target_include_directories(${PROJECT_NAME} PRIVATE ${LIBSGM_INCLUDE_DIR} $<$<BOOL:${BUILD_OPENCV_WRAPPER}>:${OpenCV_INCLUDE_DIRS}>)
target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_17)
target_link_libraries(${PROJECT_NAME} PUBLIC CUDA::cudart $<$<BOOL:${BUILD_OPENCV_WRAPPER}>:${OpenCV_LIBS}>)
set_target_properties(${PROJECT_NAME} PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${LIBSGM_INCLUDE_DIR})

target_compile_options(${PROJECT_NAME} PRIVATE
$<$<COMPILE_LANG_AND_ID:CXX,GNU>:-Wall -O3>
$<$<COMPILE_LANG_AND_ID:CXX,Clang>:-Wall -O3>
$<$<COMPILE_LANG_AND_ID:CXX,MSVC>:/wd4819>
$<$<COMPILE_LANGUAGE:CUDA>:-lineinfo>
)

install(
	TARGETS ${PROJECT_NAME}
	ARCHIVE DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
	LIBRARY DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
	RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
)

install(
	DIRECTORY ${LIBSGM_INCLUDE_DIR}
	DESTINATION ${CMAKE_INSTALL_PREFIX}
	FILES_MATCHING PATTERN "*.h" PATTERN "*.hpp"
)

install(
	FILES ${LIBSGM_ROOT_DIR}/FindLibSGM.cmake
	DESTINATION ${CMAKE_INSTALL_PREFIX}
)