Sandbox::https://github.com/apache/nuttx/blob/master/CMakeLists.txt

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# ##############################################################################

# CMakeLists.txt

# SPDX-License-Identifier: Apache-2.0

# Licensed to the Apache Software Foundation (ASF) under one or more contributor

# license agreements. See the NOTICE file distributed with this work for

# additional information regarding copyright ownership. The ASF licenses this

# file to you under the Apache License, Version 2.0 (the "License"); you may not

# use this file except in compliance with the License. You may obtain a copy of

# the License at

# http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations under

# the License.

# ##############################################################################

# ~~~

# Instructions:

# - Run CMake from the user project directory:

# cmake -S <nuttx-dir> -B <build-directory> -DBOARD_CONFIG=<board>

# - NuttX will look for the nuttx-apps repository from its parent folder

# i.e., ../nuttx-apps.

# - A custom directory can be specified with -DNUTTX_APPS_DIR=<apps-dir>.

# - Build the user project with:

# cmake --build <build-dir>

# ~~~

# Request a version available on latest Ubuntu LTS (20.04)

cmake_minimum_required(VERSION 3.20)

# Handle newer CMake versions correctly by setting policies

if(POLICY CMP0115)

# do not auto-guess extension in target_sources()

cmake_policy(SET CMP0115 NEW)

endif()

if(POLICY CMP0116)

# transform DEPFILE paths correctly for Ninja custom commands

cmake_policy(SET CMP0116 NEW)

endif()

# Avoid warning about DOWNLOAD_EXTRACT_TIMESTAMP in CMake 3.24:

if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")

cmake_policy(SET CMP0135 NEW)

endif()

if(POLICY CMP0169)

# allow to call FetchContent_Populate directly

cmake_policy(SET CMP0169 OLD)

endif()

# Find Python 3 interpreter

find_package(

Python3 REQUIRED

COMPONENTS Interpreter

QUIET)

if(NOT Python3_Interpreter_FOUND)

message(FATAL_ERROR "Did NOT find Python interpreter.")

endif()

# Basic CMake configuration ##################################################

set(CMAKE_CXX_EXTENSIONS OFF)

list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

set(CMAKE_USER_MAKE_RULES_OVERRIDE

${CMAKE_CURRENT_SOURCE_DIR}/cmake/nuttx_overrides.cmake)

# Setup build type (Debug Release RelWithDebInfo MinSizeRel Coverage). Default

# to minimum size release

# Use nuttx optimization configuration options, workaround for cmake build type

# TODO Integration the build type with CMAKE

# if (NOT CMAKE_BUILD_TYPE) set(CMAKE_BUILD_TYPE "MinSizeRel" CACHE STRING

# "Build type" FORCE) endif() set_property(CACHE CMAKE_BUILD_TYPE PROPERTY

# STRINGS "Debug;Release;RelWithDebInfo;MinSizeRel")

# Process board config & directory locations #################################

set(NUTTX_DIR ${CMAKE_CURRENT_SOURCE_DIR})

set(NUTTX_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})

# uncleaned previous make build can cause various types of cmake error

if(EXISTS "${NUTTX_DIR}/.config")

message(

FATAL_ERROR "Please distclean previous make build with `make distclean`")

endif()

if(NOT DEFINED BOARD_CONFIG)

message(FATAL_ERROR "Please define configuration with BOARD_CONFIG")

endif()

find_program(KCONFIGLIB olddefconfig)

if(NOT KCONFIGLIB)

# cmake-format: off

message(

FATAL_ERROR "Kconfig environment depends on kconfiglib, Please install:

(APT source)

$ sudo apt install python3-kconfiglib

or (pip source)

$ pip install kconfiglib

or (After Ubuntu 24.04)

$ pip install kconfiglib --break-system-packages")

# cmake-format: on

endif()

# BOARD CONFIG can be set to directory path, or <board-name>[/:]<config-name>

# configuration pair

if((EXISTS ${BOARD_CONFIG} AND EXISTS ${BOARD_CONFIG}/defconfig)

OR (EXISTS ${NUTTX_DIR}/${BOARD_CONFIG}

AND EXISTS ${NUTTX_DIR}/${BOARD_CONFIG}/defconfig))

get_filename_component(NUTTX_BOARD_ABS_DIR ${BOARD_CONFIG} ABSOLUTE BASE_DIR

${NUTTX_DIR})

string(REPLACE "/" ";" CONFIG_ARRAY ${NUTTX_BOARD_ABS_DIR})

list(LENGTH CONFIG_ARRAY CONFIG_ARRAY_LENGTH)

if(${CONFIG_ARRAY_LENGTH} LESS 4)

message(FATAL_ERROR "Please define correct board config : ${BOARD_CONFIG}")

endif()

math(EXPR NUTTX_CONFIG_INDEX "${CONFIG_ARRAY_LENGTH} - 1")

math(EXPR NUTTX_BOARD_INDEX "${CONFIG_ARRAY_LENGTH} - 3")

list(GET CONFIG_ARRAY ${NUTTX_BOARD_INDEX} NUTTX_BOARD)

list(GET CONFIG_ARRAY ${NUTTX_CONFIG_INDEX} NUTTX_CONFIG)

string(REGEX REPLACE "(.*)/(.*)/${NUTTX_CONFIG}" "\\1" NUTTX_BOARD_DIR

${NUTTX_BOARD_ABS_DIR})

set(NUTTX_DEFCONFIG ${NUTTX_BOARD_ABS_DIR}/defconfig)

else()

if(BOARD_CONFIG MATCHES "/")

set(MATCH_REGEX "/")

else()

set(MATCH_REGEX ":")

endif()

string(REPLACE ${MATCH_REGEX} ";" CONFIG_ARRAY ${BOARD_CONFIG})

list(LENGTH CONFIG_ARRAY CONFIG_ARRAY_LENGTH)

if(${CONFIG_ARRAY_LENGTH} LESS 2)

message(FATAL_ERROR "Please define correct board config : ${BOARD_CONFIG}")

endif()

list(GET CONFIG_ARRAY 0 NUTTX_BOARD)

list(GET CONFIG_ARRAY 1 NUTTX_CONFIG)

file(

GLOB NUTTX_BOARD_DIR

LIST_DIRECTORIES true

"${NUTTX_DIR}/boards/*/*/${NUTTX_BOARD}")

if(EXISTS ${NUTTX_BOARD_DIR}/configs/${NUTTX_CONFIG}/defconfig)

set(NUTTX_DEFCONFIG ${NUTTX_BOARD_DIR}/configs/${NUTTX_CONFIG}/defconfig)

endif()

if("${NUTTX_CONFIG}" STREQUAL "")

message(FATAL_ERROR "Please define correct board config : ${NUTTX_CONFIG}")

endif()

if(NOT EXISTS "${NUTTX_DEFCONFIG}")

message(FATAL_ERROR "No config file found at ${NUTTX_DEFCONFIG}")

endif()

# Process initial defconfig ###################################################

# Process initial defconfig to recursively expand #include in it

include(nuttx_process_config)

# Generate initial .config ###################################################

# This is needed right before any other configure step so that we can source

# Kconfig variables into CMake variables

# The following commands need these variables to be passed via environment

include(nuttx_kconfig)

nuttx_export_kconfig_by_value(${NUTTX_DEFCONFIG} "CONFIG_APPS_DIR")

if((NOT NUTTX_APPS_DIR) AND (NOT CONFIG_APPS_DIR))

if(EXISTS "${NUTTX_DIR}/../apps")

set(NUTTX_APPS_DIR "${NUTTX_DIR}/../apps")

elseif(EXISTS "${NUTTX_DIR}/../nuttx-apps")

set(NUTTX_APPS_DIR "${NUTTX_DIR}/../nuttx-apps")

else()

message(

WARNING

"apps/nuttx-apps directory is not found, use dummy directory instead")

set(NUTTX_APPS_DIR "${NUTTX_DIR}/dummy")

endif()

else()

set(NUTTX_APPS_DIR ${CONFIG_APPS_DIR})

set(CONFIG_APPS_DIR)

endif()

if(NOT EXISTS "${NUTTX_APPS_DIR}")

message(FATAL_ERROR "Application directory ${NUTTX_APPS_DIR} is not found")

endif()

get_filename_component(NUTTX_APPS_DIR ${NUTTX_APPS_DIR} ABSOLUTE)

get_filename_component(apps_dir ${NUTTX_APPS_DIR} NAME)

set(NUTTX_APPS_BINDIR "${NUTTX_BINARY_DIR}/${apps_dir}")

# Support not having application directory

if("${apps_dir}" STREQUAL "dummy")

file(MAKE_DIRECTORY ${NUTTX_APPS_BINDIR})

file(TOUCH ${NUTTX_APPS_BINDIR}/Kconfig)

endif()

set(ENV{PYTHONPYCACHEPREFIX} ${NUTTX_BINARY_DIR})

set(ENV{APPSDIR} ${NUTTX_APPS_DIR}) # TODO: support not having apps/

set(ENV{APPSBINDIR} ${NUTTX_APPS_BINDIR}) # TODO: support not having apps/

set(ENV{BINDIR} ${NUTTX_BINARY_DIR}) # TODO: support not having apps/

set(ENV{EXTERNALDIR} dummy) # TODO

set(ENV{DRIVERS_PLATFORM_DIR} dummy) # TODO

set(ENV{HOST_LINUX} n)

set(ENV{HOST_MACOS} n)

set(ENV{HOST_BSD} n)

set(ENV{HOST_WINDOWS} n)

set(ENV{HOST_OTHER} n)

include(nuttx_sethost)

option(NXTMPDIR "Create the nxtmpdir folder for third-party packages." OFF)

include(nuttx_3rdparty)

if(NXTMPDIR)

nuttx_make_nxtmpdir()

else()

nuttx_remove_nxtmpdir()

endif()

include(nuttx_parse_function_args)

include(nuttx_add_subdirectory)

include(nuttx_create_symlink)

# Add apps/ to the build (if present)

if(NOT EXISTS ${NUTTX_APPS_BINDIR}/Kconfig)

add_subdirectory(${NUTTX_APPS_DIR} preapps)

endif()

nuttx_export_kconfig(${NUTTX_DEFCONFIG})

if(CONFIG_ARCH_BOARD_CUSTOM)

get_filename_component(NUTTX_BOARD_DIR ${CONFIG_ARCH_BOARD_CUSTOM_DIR}

ABSOLUTE BASE_DIR ${NUTTX_DIR})

endif()

if("${NUTTX_BOARD_DIR}" STREQUAL "")

message(FATAL_ERROR "Please define correct board : ${NUTTX_BOARD_DIR}")

endif()

if(NOT EXISTS "${NUTTX_BOARD_DIR}/CMakeLists.txt"

AND NOT EXISTS "${NUTTX_BOARD_DIR}/../common/CMakeLists.txt")

message(FATAL_ERROR "No CMakeLists.txt found at ${NUTTX_BOARD_DIR}")

endif()

# Custom board ###################################################

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/boards/dummy)

if(CONFIG_ARCH_BOARD_CUSTOM)

get_filename_component(NUTTX_BOARD_ABS_DIR ${CONFIG_ARCH_BOARD_CUSTOM_DIR}

ABSOLUTE BASE_DIR ${NUTTX_DIR})

else()

set(NUTTX_BOARD_ABS_DIR ${NUTTX_BOARD_DIR})

endif()

# check if board custom dir points to NuttX upstream board. This is useful when

# an out-of-tree configuration uses an upstream board directory

string(FIND "${CONFIG_ARCH_BOARD_CUSTOM_DIR}" "boards/" IS_NUTTX_BOARD)

# link dummy/Kconfig only if this is not upstream board otherwise the same

# Kconfig file is included twice which cause CMake warnings

if(CONFIG_ARCH_BOARD_CUSTOM

AND EXISTS ${NUTTX_BOARD_ABS_DIR}/Kconfig

AND NOT (IS_NUTTX_BOARD EQUAL 0))

nuttx_create_symlink(${NUTTX_BOARD_ABS_DIR}/Kconfig

${NUTTX_BINARY_DIR}/boards/dummy/Kconfig)

else()

file(TOUCH ${NUTTX_BINARY_DIR}/boards/dummy/Kconfig)

endif()

# board platform driver

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/drivers)

if(EXISTS ${NUTTX_BOARD_ABS_DIR}/../drivers

AND EXISTS ${NUTTX_BOARD_ABS_DIR}/../drivers/Kconfig)

nuttx_create_symlink(${NUTTX_BOARD_ABS_DIR}/../drivers

${NUTTX_BINARY_DIR}/drivers/platform)

else()

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/drivers/platform)

file(TOUCH ${NUTTX_BINARY_DIR}/drivers/platform/Kconfig)

endif()

# Custom chip ###################################################

if(CONFIG_ARCH_CHIP_CUSTOM)

get_filename_component(NUTTX_CHIP_ABS_DIR ${CONFIG_ARCH_CHIP_CUSTOM_DIR}

ABSOLUTE BASE_DIR ${NUTTX_DIR})

set(NUTTX_CHIP_ABS_DIR ${NUTTX_CHIP_ABS_DIR})

else()

set(NUTTX_CHIP_ABS_DIR

"${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/${CONFIG_ARCH_CHIP}")

endif()

if(NOT EXISTS ${NUTTX_BINARY_DIR}/arch/dummy)

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/arch/dummy)

endif()

if(CONFIG_ARCH_CHIP_CUSTOM AND EXISTS ${NUTTX_CHIP_ABS_DIR}/Kconfig)

nuttx_create_symlink(${NUTTX_CHIP_ABS_DIR}/Kconfig

${NUTTX_BINARY_DIR}/arch/dummy/Kconfig)

else()

file(TOUCH ${NUTTX_BINARY_DIR}/arch/dummy/Kconfig)

endif()

if(NOT EXISTS ${NUTTX_BINARY_DIR}/arch/${CONFIG_ARCH})

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/arch/${CONFIG_ARCH})

file(MAKE_DIRECTORY ${NUTTX_BINARY_DIR}/arch/${CONFIG_ARCH}/src)

endif()

if(NOT EXISTS ${NUTTX_BINARY_DIR}/arch/${CONFIG_ARCH}/src/chip)

nuttx_create_symlink(${NUTTX_CHIP_ABS_DIR}

${NUTTX_BINARY_DIR}/arch/${CONFIG_ARCH}/src/chip)

endif()

# Unsupported custom board/chips yet, workaround

if(NOT EXISTS ${NUTTX_APPS_BINDIR}/platform/board/Kconfig)

file(MAKE_DIRECTORY ${NUTTX_APPS_BINDIR}/platform/board)

file(TOUCH ${NUTTX_APPS_BINDIR}/platform/board/Kconfig)

endif()

# Copy board defconfig into main directory and expand TODO: do also for changes

# in board/config (by comparing stored defconfig to specified one)

if(NOT EXISTS ${NUTTX_BINARY_DIR}/.config OR NOT "${NUTTX_DEFCONFIG}" STREQUAL

"${NUTTX_DEFCONFIG_SAVED}")

message(STATUS "Initializing NuttX")

configure_file(${NUTTX_DEFCONFIG} defconfig COPYONLY)

configure_file(${NUTTX_DEFCONFIG} .config.compressed COPYONLY)

set(ENV{KCONFIG_CONFIG} ${NUTTX_BINARY_DIR}/.config.compressed)

# Define host before the first olddefconfig so host-dependent defaults, such

# as the sim toolchain choice on macOS, resolve the same way as configure.sh.

nuttx_sethost(CONFIG_FILE ${NUTTX_BINARY_DIR}/.config.compressed)

# Do olddefconfig step to expand the abbreviated defconfig into normal config

nuttx_olddefconfig()

file(RENAME ${NUTTX_BINARY_DIR}/.config.compressed

${NUTTX_BINARY_DIR}/.config)

set(ENV{KCONFIG_CONFIG} ${NUTTX_BINARY_DIR}/.config)

# Set CONFIG_BASE_DEFCONFIG so .config matches Make behavior (configure.sh)

file(READ ${NUTTX_BINARY_DIR}/.config _config_init_content)

string(

REGEX

REPLACE "CONFIG_BASE_DEFCONFIG=\"[^\"]*\""

"CONFIG_BASE_DEFCONFIG=\"${NUTTX_BOARD}/${NUTTX_CONFIG}\""

_config_init_content "${_config_init_content}")

if(NOT _config_init_content MATCHES "CONFIG_BASE_DEFCONFIG=")

string(APPEND _config_init_content

"\nCONFIG_BASE_DEFCONFIG=\"${NUTTX_BOARD}/${NUTTX_CONFIG}\"\n")

endif()

file(WRITE ${NUTTX_BINARY_DIR}/.config "${_config_init_content}")

# store original expanded .config

configure_file(${NUTTX_BINARY_DIR}/.config ${NUTTX_BINARY_DIR}/.config.orig

COPYONLY)

set(NUTTX_DEFCONFIG_SAVED

${NUTTX_DEFCONFIG}

CACHE INTERNAL "Saved defconfig path" FORCE)

# Print configuration choices

message(STATUS " CMake: ${CMAKE_VERSION}")

if(CMAKE_GENERATOR MATCHES "Ninja")

execute_process(

COMMAND ninja --version

OUTPUT_VARIABLE ninja_version

OUTPUT_STRIP_TRAILING_WHITESPACE)

message(STATUS " Ninja: ${ninja_version}")

# Ninja generator does not yet know how to build archives in pieces, so

# response files must be used to deal with very long linker command lines.

set(CMAKE_NINJA_FORCE_RESPONSE_FILE

CACHE INTERNAL "")

endif()

message(STATUS " Board: ${NUTTX_BOARD}")

message(STATUS " Config: ${NUTTX_CONFIG}")

message(STATUS " Appdir: ${NUTTX_APPS_DIR}")

endif()

# config.h and CONFIG_* are generated at configure time. Watch .config so an

# out-of-band edit (kconfig-tweak) reruns CMake instead of leaving a stale

# header. .config is only rewritten when missing or the defconfig path changes,

# so this does not loop.

set_property(

DIRECTORY

APPEND

PROPERTY CMAKE_CONFIGURE_DEPENDS ${NUTTX_BINARY_DIR}/.config)

# declare global custom targets at very beginning `nuttx_global` is used to hold

# global target properties to solve that cmake GLOBAL property can not use

# generator expression this is needed to make sure added before project() create

# before Toolchain file added before all cmake modules are loaded

add_custom_target(nuttx_global)

# Include .cmake files #######################################################

# this exposes all Kconfig vars to CMake

nuttx_export_kconfig(${NUTTX_BINARY_DIR}/.config)

include(nuttx_generate_headers)

include(nuttx_generate_outputs)

include(nuttx_add_library)

# add NuttX CMake extension after nuttx_add_library

include(nuttx_extensions)

include(nuttx_add_application)

include(nuttx_add_romfs)

include(nuttx_add_symtab)

include(nuttx_add_module)

include(nuttx_add_dependencies)

include(nuttx_export_header)

include(nuttx_remove_compile_options)

include(nuttx_source_file_properties)

include(menuconfig)

include(ExternalProject)

include(FetchContent)

set(FETCHCONTENT_QUIET OFF)

# Board common directory #####################################################

if(CONFIG_ARCH_BOARD_COMMON)

file(

GLOB NUTTX_COMMON_DIR

LIST_DIRECTORIES true

"${NUTTX_DIR}/boards/${CONFIG_ARCH}/${CONFIG_ARCH_CHIP}/common")

endif()

# Setup ccache ###############################################################

if(CONFIG_CCACHE)

find_program(CCACHE_PROGRAM ccache)

if(CCACHE_PROGRAM)

message(STATUS "Using ccache: ${CCACHE_PROGRAM}")

set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)

else()

message(STATUS "Could not find ccache, skipping!")

endif()

# Setup toolchain ############################################################

# This needs to happen before project() when binaries are searched for

list(APPEND CMAKE_MODULE_PATH ${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake)

set(CMAKE_TOOLCHAIN_FILE

"${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake/Toolchain.cmake")

# Compiler detection must not try to link a full executable. CMake validates a

# compiler by building and linking a test program, but a bare metal cross

# toolchain has no start files, default linker script or libc, and the link

# flags NuttX supplies assume a newlib toolchain (--specs=nosys.specs). A

# usable cross gcc without those specs then fails configuration before any NuttX

# source is considered. Building a static library instead exercises the

# compiler and stops short of the link. sim is hosted and links normally, so it

# keeps the usual executable-based detection.

if(NOT CONFIG_ARCH STREQUAL "sim")

set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)

endif()

# Define project #############################################################

# This triggers configuration

project(NuttX LANGUAGES C CXX ASM)

# include common toolchain setting

include(nuttx_toolchain)

if(WIN32)

enable_language(ASM_MASM)

endif()

# Setup platform options (this needs to happen after project(), once the

# toolchain file has been processed)

# Support board Toolchain options

if(EXISTS ${NUTTX_BOARD_ABS_DIR}/cmake

AND EXISTS ${NUTTX_BOARD_ABS_DIR}/cmake/Toolchain.cmake)

# must be added AFTER ToolchainFile and BEFORE platform

include(${NUTTX_BOARD_ABS_DIR}/cmake/Toolchain.cmake)

endif()

# Support loadable and kernel options by specific arch

if(EXISTS ${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake/elf.cmake)

include(${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/cmake/elf.cmake)

endif()

# The default registers each static object's destructor with __cxa_atexit(dtor,

# obj, &__dso_handle), and __dso_handle comes from crtbegin, which a module does

# not link. Turning it off also puts the destructors in .fini_array, which is

# where the loader looks for them when the module is unloaded.

# GCC and Clang alone take the option, which is why the architectures built by

# another compiler do not carry it in their Toolchain.defs either. ARMClang

# reports ARMClang, so it keeps it. The generator expression keeps the option

# off the C compiles, which it is not valid for.

if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")

nuttx_elf_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-use-cxa-atexit>)

endif()

include(platform)

if(CONFIG_ARCH_TOOLCHAIN_TASKING)

if(CONFIG_INTELHEX_BINARY)

add_link_options(-Wl-onuttx.hex:IHEX:4 --hex-format=s)

endif()

if(CONFIG_MOTOROLA_SREC)

add_link_options(-Wl-onuttx.srec:SREC:4)

endif()

if(MSVC)

add_compile_options(

-W2

-wd4116 # unnamed type definition in parentheses

-wd4146 # unary minus operator applied to unsigned type, result still

# unsigned

-wd4244 # 'argument' : conversion from 'type1' to 'type2', possible loss of

# data

-wd4305 # 'context' : truncation from 'type1' to 'type2'

)

elseif(NOT CONFIG_ARCH_TOOLCHAIN_TASKING)

add_compile_options(

# system wide warnings

-Wall $<$<COMPILE_LANGUAGE:C>:-Wstrict-prototypes> -Wshadow -Wundef

# system wide options

$<$<COMPILE_LANGUAGE:ASM>:-D__ASSEMBLY__>)

endif()

if(CONFIG_NDEBUG)

add_compile_options(-DNDEBUG)

endif()

add_definitions(-D__NuttX__)

add_compile_options($<$<COMPILE_LANGUAGE:ASM>:-D__ASSEMBLY__>)

# Setup main nuttx target ####################################################

add_executable(nuttx)

add_custom_target(nuttx_post)

if(CONFIG_BUILD_PROTECTED)

add_executable(nuttx_user)

add_dependencies(nuttx_post nuttx_user)

nuttx_add_library_internal(nuttx_user)

endif()

if(CONFIG_ALLSYMS OR CONFIG_MM_KASAN_GLOBAL)

include(nuttx_multiple_link)

endif()

add_dependencies(nuttx nuttx_context)

add_dependencies(nuttx_post nuttx)

if(WIN32)

set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT

nuttx)

endif()

if(CONFIG_ARCH_SIM)

# Create separate sim_head OBJECT library built as part of NuttX kernel It

# must be separated to allow for linking against the rest of NuttX libraries

add_library(sim_head OBJECT)

nuttx_add_library_internal(sim_head)

get_property(

definitions

TARGET nuttx

PROPERTY NUTTX_KERNEL_DEFINITIONS)

target_compile_definitions(sim_head PRIVATE ${definitions})

get_property(

options

TARGET nuttx

PROPERTY NUTTX_KERNEL_COMPILE_OPTIONS)

target_compile_options(sim_head PRIVATE ${options})

target_compile_options(sim_head PRIVATE -fvisibility=default)

# We need the relocatable object to be first in the list of libraries to be

# linked against final nuttx binary

if(NOT WIN32)

target_link_libraries(nuttx PRIVATE ${NUTTX_BINARY_DIR}/nuttx.rel)

endif()

else()

# These flags apply to source files not part of the library. In sim build this

# corresponds to "host" files, so we only do this on non-sim build

target_compile_definitions(

nuttx

PRIVATE $<GENEX_EVAL:$<TARGET_PROPERTY:nuttx,NUTTX_COMPILE_DEFINITIONS>>)

target_compile_options(

nuttx PRIVATE $<GENEX_EVAL:$<TARGET_PROPERTY:nuttx,NUTTX_COMPILE_OPTIONS>>)

endif()

set_property(

TARGET nuttx

APPEND

PROPERTY NUTTX_KERNEL_DEFINITIONS __KERNEL__)

# Recurse subdirectories #####################################################

# Each subdirectory will generate a static library

if(CONFIG_OPENAMP)

include_directories(${NUTTX_DIR}/openamp/open-amp/lib/include)

endif()

add_subdirectory(openamp)

add_subdirectory(arch)

add_subdirectory(audio)

add_subdirectory(binfmt)

add_subdirectory(crypto)

add_subdirectory(drivers)

add_subdirectory(fs)

add_subdirectory(graphics)

add_subdirectory(libs)

add_subdirectory(mm)

add_subdirectory(net)

add_subdirectory(sched)

add_subdirectory(syscall)

add_subdirectory(wireless)

# This picks up the chosen board (as well as common board code)

add_subdirectory(boards)

# POSTBUILD -- Perform post build operations Some architectures require the use

# of special tools and special handling AFTER building the NuttX binary.

# Make.defs files for those architectures should override the following define

# with the correct operations for that platform

if(TARGET nuttx_post_build)

# ensure thae the custom post build is executed after all steps of the nuttx

# build are completed

add_dependencies(nuttx_post_build nuttx_post)

add_custom_target(post_build ALL DEPENDS nuttx_post_build)

endif()

# Add apps/ to the build (if present)

if(EXISTS ${NUTTX_APPS_DIR}/CMakeLists.txt)

add_subdirectory(${NUTTX_APPS_DIR} apps)

else()

message(

STATUS "Application directory not found at ${NUTTX_APPS_DIR}, skipping")

endif()

# after we traverse all build directories unify all target dependencies and all

# romfs target

process_all_target_dependencies()

process_all_directory_romfs()

# Link step ##################################################################

# Get linker script to use

get_property(ldscript GLOBAL PROPERTY LD_SCRIPT)

# Iterable sections "zero-touch" mode: the central INSERT fragment must come

# BEFORE the board script on the linker command line (GNU ld requirement for

# INSERT AFTER), see include/nuttx/linker/common-insert.ld.

if(CONFIG_ITERABLE_SECTIONS_LINKER_INSERT)

list(PREPEND ldscript ${NUTTX_DIR}/include/nuttx/linker/common-insert.ld)

endif()

# Pre-compile linker script(s)

if(NOT CONFIG_ARCH_SIM)

set(ldscript_tmp_list)

foreach(ld ${ldscript})

get_filename_component(LD_SCRIPT_NAME ${ld} NAME)

set(LD_SCRIPT_TMP "${NUTTX_BINARY_DIR}/${LD_SCRIPT_NAME}.tmp")

nuttx_generate_preprocess_target(SOURCE_FILE ${ld} TARGET_FILE

${LD_SCRIPT_TMP})

add_custom_target(ldscript_tmp_${LD_SCRIPT_NAME} DEPENDS ${LD_SCRIPT_TMP})

add_dependencies(nuttx ldscript_tmp_${LD_SCRIPT_NAME})

list(APPEND ldscript_tmp_list -T ${LD_SCRIPT_TMP})

endforeach()

set(ldscript ${ldscript_tmp_list})

endif()

# Perform link

# Add empty source file to nuttx target since cmake requires at least one file

# and we will only be linking libraries

if(CONFIG_HAVE_CXX)

file(TOUCH "${CMAKE_CURRENT_BINARY_DIR}/empty.cxx")

target_sources(nuttx PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/empty.cxx")

else()

file(TOUCH "${CMAKE_CURRENT_BINARY_DIR}/empty.c")

target_sources(nuttx PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/empty.c")

endif()

# initialize manifest to hold all generated files

file(TOUCH ${NUTTX_BINARY_DIR}/nuttx.manifest)

get_property(nuttx_kernel_libs GLOBAL PROPERTY NUTTX_KERNEL_LIBRARIES)

get_property(nuttx_extra_libs GLOBAL PROPERTY NUTTX_EXTRA_LIBRARIES)

if(CONFIG_BUILD_FLAT)

get_property(nuttx_system_libs GLOBAL PROPERTY NUTTX_SYSTEM_LIBRARIES)

get_property(nuttx_apps_libs GLOBAL PROPERTY NUTTX_APPS_LIBRARIES)

endif()

set(nuttx_libs ${nuttx_kernel_libs} ${nuttx_system_libs} ${nuttx_apps_libs}

${nuttx_extra_libs})

if(NOT CONFIG_ARCH_SIM)

# TODO: nostart/nodefault not applicable to nuttx toolchain

if(CONFIG_ARCH_TOOLCHAIN_TASKING)

target_link_libraries(nuttx PRIVATE --lsl-file=${ldscript} ${nuttx_libs})

# Remove executable suffix

set(CMAKE_EXECUTABLE_SUFFIX "")

else()

target_link_libraries(

nuttx

PRIVATE ${NUTTX_EXTRA_FLAGS}

${ldscript}

$<$<NOT:$<BOOL:${DISABLE_LINK_GROUP}>>:-Wl,--start-group>

${nuttx_libs}

$<$<NOT:$<BOOL:${DISABLE_LINK_GROUP}>>:-Wl,--end-group>)

endif()

# generate binary outputs in different formats (.bin, .hex, etc)

nuttx_generate_outputs(nuttx)

if(CONFIG_UBOOT_UIMAGE)

add_custom_command(

OUTPUT uImage

COMMAND

${MKIMAGE} -A ${CONFIG_ARCH} -O linux -C none -T kernel -a

${CONFIG_UIMAGE_LOAD_ADDRESS} -e ${CONFIG_UIMAGE_ENTRY_POINT} -n nuttx

-d nuttx.bin uImage

DEPENDS nuttx)

add_custom_target(nuttx-uImage ALL DEPENDS uImage)

# TODO: install? $(Q) if [ -w /tftpboot ] ; then \ cp -f uImage

# /tftpboot/uImage; \ fi

file(APPEND ${NUTTX_BINARY_DIR}/nuttx.manifest uImage)

endif()

elseif(WIN32)

target_link_options(nuttx PUBLIC /SAFESEH:NO)

math(EXPR LINK_STACKSIZE

"${CONFIG_SIM_STACKSIZE_ADJUSTMENT} + ${CONFIG_IDLETHREAD_STACKSIZE}"

OUTPUT_FORMAT DECIMAL)

target_link_options(nuttx PUBLIC /STACK:${LINK_STACKSIZE},${LINK_STACKSIZE})

if("${CMAKE_GENERATOR_PLATFORM}" STREQUAL "x64")

target_link_options(nuttx PUBLIC /LARGEADDRESSAWARE:NO)

endif()

set(nuttx_libs_paths)

foreach(lib ${nuttx_libs})

list(APPEND nuttx_libs_paths $<TARGET_FILE:${lib}>)

endforeach()

add_custom_command(

OUTPUT ${NUTTX_BINARY_DIR}/nuttx_all.lib

COMMAND ${CMAKE_AR} /OUT:${NUTTX_BINARY_DIR}/nuttx_all.lib

${nuttx_libs_paths}

DEPENDS ${nuttx_libs}

VERBATIM)

add_custom_target(nuttx_all-lib DEPENDS ${NUTTX_BINARY_DIR}/nuttx_all.lib)

add_dependencies(nuttx nuttx_all-lib)

target_link_libraries(nuttx PRIVATE $<TARGET_OBJECTS:sim_head>

${NUTTX_BINARY_DIR}/nuttx_all.lib)

else()

if(NOT APPLE)

# generate SIM ld.script for cheat C++ global construction

include(nuttx_generate_sim_ld)

endif()

# On sim platform the link step is a little different. NuttX is first built

# into a partially linked relocatable object nuttx.rel with no interface to

# host OS. Then, the names of symbols that conflict with libc symbols are

# renamed. The final nuttx binary is built by linking the host-specific

# objects with the relocatable binary.

include(nuttx_redefine_symbols)

# TODO: do with single function call?

set(nuttx_libs_paths)

foreach(lib ${nuttx_libs})

list(APPEND nuttx_libs_paths $<TARGET_FILE:${lib}>)

endforeach()

if(APPLE)

add_custom_command(

OUTPUT nuttx.rel

COMMAND

${CMAKE_LINKER} ARGS -r $<$<BOOL:${CONFIG_SIM_M32}>:-m32>

$<TARGET_OBJECTS:sim_head> $<$<NOT:$<BOOL:${APPLE}>>:-Wl,--start-group>

${nuttx_libs_paths} $<$<NOT:$<BOOL:${APPLE}>>:-Wl,--end-group> -o

nuttx.rel

DEPENDS ${nuttx_libs} sim_head

COMMAND_EXPAND_LISTS)

else()

add_custom_command(

OUTPUT nuttx.rel

COMMAND

${CMAKE_C_COMPILER} ARGS -r $<$<BOOL:${CONFIG_SIM_M32}>:-m32>

$<$<BOOL:${LINUX}>:-Wl,-z,noexecstack> $<TARGET_OBJECTS:sim_head>

$<$<NOT:$<BOOL:${APPLE}>>:-Wl,--start-group> ${nuttx_libs_paths}

$<$<NOT:$<BOOL:${APPLE}>>:-Wl,--end-group> -o nuttx.rel

COMMAND ${CMAKE_OBJCOPY} --redefine-syms=nuttx-names.dat nuttx.rel

DEPENDS ${nuttx_libs} sim_head sim_redefine_symbols

COMMAND_EXPAND_LISTS)

endif()

add_custom_target(nuttx-rel DEPENDS nuttx.rel

$<$<NOT:$<BOOL:${APPLE}>>:nuttx.ld>)

# link the final nuttx binary

add_dependencies(nuttx nuttx-rel)

target_link_options(nuttx PUBLIC $<$<NOT:$<BOOL:${APPLE}>>:-T nuttx.ld>

$<$<BOOL:${CONFIG_SIM_M32}>:-m32>)

endif()

# TODO: if we use an install target a manifest may not be needed

if(CONFIG_ARCH_SIM)

file(APPEND ${NUTTX_BINARY_DIR}/nuttx.manifest "nuttx\n")

endif()

# Generate system map using the compiler toolchain. Conventionally, the tool

# which dump symbols are called nm, though, some compiler toolchain may have a

# different name.

if(NOT CMAKE_HOST_WIN32)

add_custom_command(

OUTPUT System.map

COMMAND

${CMAKE_NM} nuttx | grep -v

'$compiled$\|$\${CMAKE_C_OUTPUT_EXTENSION}$$$\|$ [aUw] $\|$\.\.ng$$$\|$LASH[RL]DI$'

| sort > System.map

DEPENDS nuttx)

add_custom_target(systemmap ALL DEPENDS System.map)

add_dependencies(nuttx_post systemmap)

endif()

# Userspace portion ##########################################################

if(CONFIG_BUILD_PROTECTED)

get_property(nuttx_system_libs GLOBAL PROPERTY NUTTX_SYSTEM_LIBRARIES)

get_property(nuttx_apps_libs GLOBAL PROPERTY NUTTX_APPS_LIBRARIES)

get_property(nuttx_user_extra_libs GLOBAL PROPERTY NUTTX_USER_EXTRA_LIBRARIES)

get_property(user_ldscript GLOBAL PROPERTY LD_SCRIPT_USER)

# Pre-compile linker script(s)

set(user_ldscript_tmp_list)

foreach(ldscript ${user_ldscript})

get_filename_component(LD_SCRIPT_USER_NAME ${ldscript} NAME)

set(LD_SCRIPT_USER_TMP "${NUTTX_BINARY_DIR}/${LD_SCRIPT_USER_NAME}.tmp")

nuttx_generate_preprocess_target(SOURCE_FILE ${ldscript} TARGET_FILE

${LD_SCRIPT_USER_TMP})

add_custom_target(user_ldscript_tmp_${LD_SCRIPT_USER_NAME}

DEPENDS ${LD_SCRIPT_USER_TMP})

add_dependencies(nuttx_user user_ldscript_tmp_${LD_SCRIPT_USER_NAME})

list(APPEND user_ldscript_tmp_list -T ${LD_SCRIPT_USER_TMP})

endforeach()

set(user_ldscript ${user_ldscript_tmp_list})

# reset link options that don't fit userspace

get_target_property(nuttx_user_LINK_OPTIONS nuttx_user LINK_OPTIONS)

list(REMOVE_ITEM nuttx_user_LINK_OPTIONS "-Wl,--cref")

list(REMOVE_ITEM nuttx_user_LINK_OPTIONS "-Wl,-Map=nuttx.map")

if(CONFIG_ARCH_TOOLCHAIN_GHS)

list(REMOVE_ITEM nuttx_user_LINK_OPTIONS "-entry=__start")

list(REMOVE_ITEM nuttx_user_LINK_OPTIONS "-map=nuttx.map")

list(APPEND nuttx_user_LINK_OPTIONS "-map=nuttx_user.map")

else()

list(REMOVE_ITEM nuttx_user_LINK_OPTIONS "-Wl,--entry=__start")

list(APPEND nuttx_user_LINK_OPTIONS "-Wl,-Map=nuttx_user.map")

endif()

set_target_properties(nuttx_user PROPERTIES LINK_OPTIONS

"${nuttx_user_LINK_OPTIONS}")

if(CONFIG_ARCH_TOOLCHAIN_GHS)

target_link_options(nuttx_user PRIVATE -nostartfiles -minlib

-entry=${CONFIG_INIT_ENTRYPOINT})

else()

target_link_options(

nuttx_user PRIVATE -nostartfiles -nodefaultlibs

-Wl,--entry=${CONFIG_INIT_ENTRYPOINT}

-Wl,--undefined=${CONFIG_INIT_ENTRYPOINT})

endif()

target_link_libraries(

nuttx_user

PRIVATE ${user_ldscript}

$<$<NOT:$<BOOL:${DISABLE_LINK_GROUP}>>:-Wl,--start-group>

${nuttx_system_libs}

${nuttx_apps_libs}

${nuttx_user_extra_libs}

$<$<BOOL:${CONFIG_HAVE_CXX}>:supc++>

$<$<NOT:$<BOOL:${DISABLE_LINK_GROUP}>>:-Wl,--end-group>)

target_include_directories(

nuttx_user SYSTEM PRIVATE ${NUTTX_DIR}/include ${NUTTX_BINARY_DIR}/include

${NUTTX_BINARY_DIR}/include_arch)

add_custom_command(

OUTPUT User.map

COMMAND ${CMAKE_NM} nuttx_user > User.map

DEPENDS nuttx_user)

add_custom_target(usermap ALL DEPENDS User.map)

add_dependencies(nuttx_post usermap)

# generate binary outputs in different formats (.bin, .hex, etc)

nuttx_generate_outputs(nuttx_user)

# create merged .hex file ready to be flashed TODO: does not seem to be

# generating a functional hex file

if(CONFIG_INTELHEX_BINARY AND SREC_CAT)

add_custom_command(

OUTPUT nuttx_combined.hex

COMMAND ${SREC_CAT} nuttx.hex -intel nuttx_user.hex -intel -o

nuttx_combined.hex -intel

DEPENDS nuttx_user nuttx)

add_custom_target(nuttx-combined ALL DEPENDS nuttx_combined.hex)

endif()

# TODO: could also merge elf binaries

endif()

if(CONFIG_BUILD_KERNEL)

# TODO: generate nuttx-export-xxx.tar.gz for userland development

endif()

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