cmake_minimum_required(VERSION 3.10)
project(kyncat C)

# Set C standard
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)

# Set output directory for the compiled binary
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}")
set(CMAKE_BINARY_DIRECTORY "${CMAKE_SOURCE_DIR}")

# SOEM Repository Info
set(SOEM_REPO "https://github.com/OpenEtherCATsociety/SOEM.git")
set(SOEM_PATH "${CMAKE_SOURCE_DIR}/SOEM")

# Check if SOEM exists, if not, clone it
if(NOT EXISTS ${SOEM_PATH}/CMakeLists.txt)
    message(STATUS "SOEM not found! Cloning from ${SOEM_REPO}...")
    execute_process(
        COMMAND git clone --depth 1 ${SOEM_REPO} ${SOEM_PATH}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        RESULT_VARIABLE GIT_CLONE_RESULT
    )
    if(NOT GIT_CLONE_RESULT EQUAL 0)
        message(FATAL_ERROR "Failed to clone SOEM repository!")
    endif()
endif()

# Include SOEM as a subdirectory (it has its own CMakeLists.txt)
add_subdirectory(${SOEM_PATH})

# Include directories for SOEM
include_directories(
    ${SOEM_PATH}/soem
    ${SOEM_PATH}/osal
    ${SOEM_PATH}/osal/linux
    ${SOEM_PATH}/oshw/linux
)

# Define the source files for kyncat
set(SOURCES
    main.c
    slaveconfig.c
)

set(HEADERS
    slaveconfig.h
)

# Create the executable and link against the SOEM static library
add_executable(kyncat ${SOURCES} ${HEADERS})

# Link SOEM library and required system libraries
target_link_libraries(kyncat soem pthread rt)