avr-zero/CMakeLists.txt at main · xchrishawk/avr-zero · GitHub

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#
# @file     CMakeLists.txt
# @brief    Main project CMake configuration.
#
# @author   Chris Vig (chris@invictus.so)
# @date     2025-07-21
#

cmake_minimum_required(VERSION 3.22)

# -- Device Configuration --

# Ensure required arguments are specified
if(NOT DEFINED DEVICE_MCU)
    message(FATAL_ERROR "The DEVICE_MCU argument must be specified.")
endif()
if(NOT DEFINED DEVICE_F_CPU)
    message(FATAL_ERROR "The DEVICE_F_CPU argument must be specified.")
endif()
if(NOT DEFINED DEVICE_BAUD)
    message(FATAL_ERROR "The DEVICE_BAUD argument must be specified.")
endif()

# -- Toolchain Configuration --

# Tool names
set(AVR_GCC                 avr-gcc)
set(AVR_OBJCOPY             avr-objcopy)
set(AVR_OBJDUMP             avr-objdump)
set(AVR_STRIP               avr-strip)

# Configure CMake system
set(CMAKE_SYSTEM_NAME       Generic)
set(CMAKE_ASM_COMPILER      ${AVR_GCC})
set(CMAKE_C_COMPILER        ${AVR_GCC})

# -- Project Setup --

# Top-level project definition
project(avr-zero LANGUAGES C ASM)

# Set up project directories
set(PROJECT_BASE_DIR        ${CMAKE_CURRENT_SOURCE_DIR})
set(PROJECT_LIBRARY_DIR     ${PROJECT_BASE_DIR}/lib)
set(PROJECT_EXECUTABLE_DIR  ${PROJECT_BASE_DIR}/src)
set(PROJECT_BUILD_DIR       ${CMAKE_CURRENT_BINARY_DIR})
set(PROJECT_BIN_DIR         ${PROJECT_BUILD_DIR})

# Configure output directory
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BIN_DIR})

# Shared variables for compilation flags
set(PROJECT_COMMON_FLAGS    "-mmcu=${DEVICE_MCU}")
set(PROJECT_DEBUG_FLAGS     "-g")
set(PROJECT_OPTIMIZE_FLAGS  "-Os")

# Set compilation flags
# (note: quotation marks are required)
set(CMAKE_ASM_FLAGS         "${PROJECT_COMMON_FLAGS} ${PROJECT_DEBUG_FLAGS}")
set(CMAKE_C_FLAGS           "${PROJECT_COMMON_FLAGS} ${PROJECT_DEBUG_FLAGS} ${PROJECT_OPTIMIZE_FLAGS}")

# Set preprocessor macros
add_compile_definitions(
    F_CPU=${DEVICE_F_CPU}
    BAUD=${DEVICE_BAUD}
)

# -- Subdirectories --

# Generic libraries
add_subdirectory(${PROJECT_LIBRARY_DIR}/adc)
add_subdirectory(${PROJECT_LIBRARY_DIR}/eeprom)
add_subdirectory(${PROJECT_LIBRARY_DIR}/gpio)
add_subdirectory(${PROJECT_LIBRARY_DIR}/lcdtext)
add_subdirectory(${PROJECT_LIBRARY_DIR}/usart)
add_subdirectory(${PROJECT_LIBRARY_DIR}/zero)

# Shield-specific libraries
add_subdirectory(${PROJECT_LIBRARY_DIR}/shield/hw262)
add_subdirectory(${PROJECT_LIBRARY_DIR}/shield/lcd1602a)

# Executables
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/adc-demo)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/blink)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/lcdtext-demo)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/powerbar-switcher)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/scratchpad)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/shield-hw262-demo)
add_subdirectory(${PROJECT_EXECUTABLE_DIR}/shield-lcd1602a-demo)