CMakeLists.txt

# v3.14 required for FetchContent_MakeAvailable
cmake_minimum_required(VERSION 3.21)

PROJECT(gciwire
    VERSION "2023.02.10"
    LANGUAGES CXX
)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

if(PROJECT_IS_TOP_LEVEL)
    cmake_host_system_information(RESULT HOST QUERY HOSTNAME)
    cmake_host_system_information(RESULT OSN QUERY OS_NAME)
    cmake_host_system_information(RESULT OS_VERSION QUERY OS_RELEASE)
    cmake_host_system_information(RESULT PROC QUERY PROCESSOR_DESCRIPTION)

    message(STATUS "-------------------------------------")
    message(STATUS "  Project: ${PROJECT_NAME}")
    message(STATUS "  Version: ${CMAKE_PROJECT_VERSION}")
    message(STATUS "  C++ ${CMAKE_CXX_STANDARD}")
    message(STATUS "-------------------------------------")
    message(STATUS " ${HOST}")
    message(STATUS " ${OSN}: ${OS_VERSION}")
    message(STATUS " ${PROC}")
    message(STATUS "-------------------------------------")

    set(BUILD_EXAMPLES ON)
    set(BUILD_GTESTS ON)

    include(FetchContent)
    FetchContent_Declare(
        gtest
        URL https://github.com/google/googletest/archive/refs/tags/v1.14.0.zip
    )
    FetchContent_MakeAvailable(gtest)
else()
    message(STATUS "-> ${PROJECT_NAME} is submodule")
    set(BUILD_EXAMPLES OFF)
    set(BUILD_GTESTS OFF)
endif()


# Add the library target
add_library(${PROJECT_NAME} INTERFACE src)
target_include_directories(${PROJECT_NAME} INTERFACE src)

# if(UNIX AND NOT APPLE)
#     target_link_libraries(${PROJECT_NAME} i2c)
# endif()

# Examples ====================================================================
# option(BUILD_EXAMPLES "Examples" ON)
message(STATUS "Building gciWire examples is ${BUILD_EXAMPLES}")
if (BUILD_EXAMPLES)
    add_subdirectory(examples)
endif()

# option(BUILD_GTESTS "build gtests" ON)
message(STATUS "Building gciWire gtests is ${BUILD_GTESTS}")
if (BUILD_GTESTS)
    add_subdirectory(gtests)
endif()