CMakeLists.txt

cmake_minimum_required(VERSION 3.22)

#
# User is free to modify the file as much as necessary
#

list(APPEND CMAKE_MODULE_PATH "{{sr:cmake_path}}")
include("cmake/gcc-arm-none-eabi.cmake")
message("Build CMAKE_MODULE_PATH: " ${CMAKE_MODULE_PATH})

# Core project settings
project(blinky_bare_metal_asm)
enable_language(ASM)
message("Build type: " ${CMAKE_BUILD_TYPE})


# Sources
set(sources_SRCS
    ${CMAKE_CURRENT_SOURCE_DIR}/Src/blinky.s
)

# Now call generated cmake
# This will add script generated
# information to the project
include("cmake/vscode_generated.cmake")

# Link directories setup
# Must be before executable is added
link_directories(${CMAKE_PROJECT_NAME} ${link_DIRS})

# Create an executable object type
add_executable(${CMAKE_PROJECT_NAME})
set_property(TARGET ${CMAKE_PROJECT_NAME} PROPERTY LINKER_LANGUAGE ASM)

# Add sources to executable
target_sources(${CMAKE_PROJECT_NAME} PUBLIC ${sources_SRCS})

# Compiler options
target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE
    ${cpu_PARAMS}
    ${compiler_OPTS}
    -Wall
    -Wextra
    -Wpedantic
    -Wno-unused-parameter
    $<$<COMPILE_LANGUAGE:C>: >
    $<$<COMPILE_LANGUAGE:CXX>:

    # -Wno-volatile
    # -Wold-style-cast
    # -Wuseless-cast
    # -Wsuggest-override
    >
    $<$<COMPILE_LANGUAGE:ASM>:-x assembler-with-cpp -MMD -MP>
    $<$<CONFIG:Debug>:-Og -g3 -ggdb>
    $<$<CONFIG:Release>:-Og -g0>
)

# Linker options
target_link_options(${CMAKE_PROJECT_NAME} PRIVATE
    -nostdlib
    -T${linker_script_SRC}
    ${cpu_PARAMS}
    ${linker_OPTS}
    -Wl,-Map=${CMAKE_PROJECT_NAME}.map
    --specs=nosys.specs
    -Wl,-z,max-page-size=8 # Allow good software remapping across address space (with proper GCC section making)
    -Wl,--print-memory-usage
)

# Execute post-build to print size, generate hex and bin
add_custom_command(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD
    COMMAND ${CMAKE_SIZE} $<TARGET_FILE:${CMAKE_PROJECT_NAME}>
    COMMAND ${CMAKE_OBJCOPY} -O ihex $<TARGET_FILE:${CMAKE_PROJECT_NAME}> ${CMAKE_PROJECT_NAME}.hex
    COMMAND ${CMAKE_OBJCOPY} -O binary $<TARGET_FILE:${CMAKE_PROJECT_NAME}> ${CMAKE_PROJECT_NAME}.bin
)