cmake_minimum_required(VERSION 3.10)
project(c_osrm)

add_compile_options(-fno-lto)
set(CMAKE_CXX_STANDARD 14)
include(ExternalProject)

list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

link_directories(${LibOSRM_LIBRARY_DIRS})
add_library(c_osrm SHARED c_osrm.cpp)
install(TARGETS c_osrm DESTINATION /usr/local/lib/)

find_package(Boost REQUIRED regex date_time chrono filesystem iostreams thread system)

find_package(Git QUIET)
if(GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
# Update submodules as needed
    option(GIT_SUBMODULE "Check submodules during build" ON)
    if(GIT_SUBMODULE)
        message(STATUS "Submodule update")
        execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive
                        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                        RESULT_VARIABLE GIT_SUBMOD_RESULT)
        if(NOT GIT_SUBMOD_RESULT EQUAL "0")
            message(FATAL_ERROR "git submodule update --init failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")
        endif()
    endif()
endif()

find_package(LibOSRM)

if(NOT ${LibOSRM_FOUND}) 
    execute_process(COMMAND sudo apt install build-essential git cmake pkg-config
                            libbz2-dev libxml2-dev libzip-dev libboost-all-dev
                            lua5.2 liblua5.2-dev libtbb-dev)
    
    execute_process(COMMAND mkdir -p build WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/osrm-backend")
    execute_process(COMMAND cmake .. WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/osrm-backend/build")
    execute_process(COMMAND cmake --build . -j12 WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/osrm-backend/build")
    execute_process(COMMAND sudo cmake --build . --target install WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/osrm-backend/build")
endif()


find_package(LibOSRM REQUIRED)

target_link_libraries(c_osrm ${LibOSRM_LIBRARIES} ${LibOSRM_DEPENDENT_LIBRARIES})
include_directories(SYSTEM ${LibOSRM_INCLUDE_DIRS})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LibOSRM_CXXFLAGS}")