cmake_minimum_required(VERSION 3.17)

#check avr build tools installed

if (DEFINED ENV{AVR_BUILD_TOOLS})
    set(BUILD_TOOLS_ROOT "$ENV{AVR_BUILD_TOOLS}")
else (DEFINED ENV{AVR_BUILD_TOOLS})
    message(FATAL_ERROR "Build tools is not installed or ENV AVR_BUILD_TOOLS is not defined")
endif (DEFINED ENV{AVR_BUILD_TOOLS})

#load common project metadata
if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/avr-project.cmake)
    INCLUDE(${CMAKE_CURRENT_SOURCE_DIR}/avr-project.cmake)
    project(${AVR_PROJECT_NAME})
    INCLUDE("${BUILD_TOOLS_ROOT}/cmake-scripts/prepare-build.cmake")
else (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/avr-project.cmake)
    project("Unconfigured project")
    add_custom_target(
            "Configure"
            ${BUILD_TOOLS_ROOT}/bin/avr-tools-bootstrap ${PROJECT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR} ProjectConfigurator
            COMMENT "Start configuration utility"
    )
endif (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/avr-project.cmake)