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alex/esp-idf
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esp-idf/tools/cmake/project.cmake

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CMake
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# Designed to be included from an IDF app's CMakeLists.txt file
cmake_minimum_required(VERSION 3.5)
# The mere inclusion of this CMake file sets up some interal build properties.
# These properties can be modified in between this inclusion the the idf_build_process
# call.
include(${CMAKE_CURRENT_LIST_DIR}/idf.cmake)
set(IDFTOOL ${PYTHON} "${IDF_PATH}/tools/idf.py")
# Internally, the Python interpreter is already set to 'python'. Re-set here
# to be absolutely sure.
set_default(PYTHON "python")
file(TO_CMAKE_PATH ${PYTHON} PYTHON)
idf_build_set_property(PYTHON ${PYTHON})
# On processing, checking Python required modules can be turned off if it was
# already checked externally.
if(PYTHON_DEPS_CHECKED)
idf_build_set_property(__CHECK_PYTHON 0)
endif()
# Store CMake arguments that need to be passed into all CMake sub-projects as well
# (bootloader, ULP, etc)
#
# It's not possible to tell if CMake was called with --warn-uninitialized, so to also
# have these warnings in sub-projects we set a cache variable as well and then check that.
if(WARN_UNINITIALIZED)
idf_build_set_property(EXTRA_CMAKE_ARGS --warn-uninitialized)
else()
idf_build_set_property(EXTRA_CMAKE_ARGS "")
endif()
# Initialize build target for this build using the environment variable or
# value passed externally.
__target_init()
#
# Get the project version from either a version file or the Git revision. This is passed
# to the idf_build_process call. Dependencies are also set here for when the version file
# changes (if it is used).
#
function(__project_get_revision var)
set(_project_path "${CMAKE_CURRENT_LIST_DIR}")
if(NOT DEFINED PROJECT_VER)
if(EXISTS "${_project_path}/version.txt")
file(STRINGS "${_project_path}/version.txt" PROJECT_VER)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${_project_path}/version.txt")
else()
git_describe(PROJECT_VER_GIT "${_project_path}")
if(PROJECT_VER_GIT)
set(PROJECT_VER ${PROJECT_VER_GIT})
else()
message(STATUS "Project is not inside a git repository, or git repository has no commits;"
" will not use 'git describe' to determine PROJECT_VER.")
set(PROJECT_VER 1)
endif()
endif()
endif()
set(${var} "${PROJECT_VER}" PARENT_SCOPE)
endfunction()
#
# Output the built components to the user. Generates files for invoking idf_monitor.py
# that doubles as an overview of some of the more important build properties.
#
function(__project_info test_components)
idf_build_get_property(prefix __PREFIX)
idf_build_get_property(_build_components BUILD_COMPONENTS)
idf_build_get_property(build_dir BUILD_DIR)
idf_build_get_property(idf_path IDF_PATH)
list(SORT _build_components)
unset(build_components)
unset(build_component_paths)
foreach(build_component ${_build_components})
__component_get_target(component_target "${build_component}")
__component_get_property(_name ${component_target} COMPONENT_NAME)
__component_get_property(_prefix ${component_target} __PREFIX)
__component_get_property(_alias ${component_target} COMPONENT_ALIAS)
__component_get_property(_dir ${component_target} COMPONENT_DIR)
if(_alias IN_LIST test_components)
list(APPEND test_component_paths ${_dir})
else()
if(_prefix STREQUAL prefix)
set(component ${_name})
else()
set(component ${_alias})
endif()
list(APPEND build_components ${component})
list(APPEND build_component_paths ${_dir})
endif()
endforeach()
set(PROJECT_NAME ${CMAKE_PROJECT_NAME})
idf_build_get_property(PROJECT_PATH PROJECT_DIR)
idf_build_get_property(BUILD_DIR BUILD_DIR)
idf_build_get_property(SDKCONFIG SDKCONFIG)
idf_build_get_property(SDKCONFIG_DEFAULTS SDKCONFIG_DEFAULTS)
idf_build_get_property(PROJECT_EXECUTABLE EXECUTABLE)
set(PROJECT_BIN ${CMAKE_PROJECT_NAME}.bin)
idf_build_get_property(IDF_VER IDF_VER)
idf_build_get_property(sdkconfig_cmake SDKCONFIG_CMAKE)
include(${sdkconfig_cmake})
idf_build_get_property(COMPONENT_KCONFIGS KCONFIGS)
idf_build_get_property(COMPONENT_KCONFIGS_PROJBUILD KCONFIG_PROJBUILDS)
# Write project description JSON file
idf_build_get_property(build_dir BUILD_DIR)
make_json_list("${build_components};${test_components}" build_components_json)
make_json_list("${build_component_paths};${test_component_paths}" build_component_paths_json)
configure_file("${idf_path}/tools/cmake/project_description.json.in"
"${build_dir}/project_description.json")
# We now have the following component-related variables:
#
# build_components is the list of components to include in the build.
# build_component_paths is the paths to all of these components, obtained from the component dependencies file.
#
# Print the list of found components and test components
string(REPLACE ";" " " build_components "${build_components}")
string(REPLACE ";" " " build_component_paths "${build_component_paths}")
message(STATUS "Components: ${build_components}")
message(STATUS "Component paths: ${build_component_paths}")
if(test_components)
string(REPLACE ";" " " test_components "${test_components}")
string(REPLACE ";" " " test_component_paths "${test_component_paths}")
message(STATUS "Test components: ${test_components}")
message(STATUS "Test component paths: ${test_component_paths}")
endif()
endfunction()
function(__project_init components_var test_components_var)
# Use EXTRA_CFLAGS, EXTRA_CXXFLAGS and EXTRA_CPPFLAGS to add more priority options to the compiler
# EXTRA_CPPFLAGS is used for both C and C++
# Unlike environments' CFLAGS/CXXFLAGS/CPPFLAGS which work for both host and target build,
# these works only for target build
set(extra_cflags "$ENV{EXTRA_CFLAGS}")
set(extra_cxxflags "$ENV{EXTRA_CXXFLAGS}")
set(extra_cppflags "$ENV{EXTRA_CPPFLAGS}")
spaces2list(extra_cflags)
spaces2list(extra_cxxflags)
spaces2list(extra_cppflags)
idf_build_set_property(C_COMPILE_OPTIONS "${extra_cflags}" APPEND)
idf_build_set_property(CXX_COMPILE_OPTIONS "${extra_cxxflags}" APPEND)
idf_build_set_property(COMPILE_OPTIONS "${extra_cppflags}" APPEND)
function(__project_component_dir component_dir)
get_filename_component(component_dir "${component_dir}" ABSOLUTE)
if(EXISTS ${component_dir}/CMakeLists.txt)
idf_build_component(${component_dir})
else()
file(GLOB component_dirs ${component_dir}/*)
foreach(component_dir ${component_dirs})
if(EXISTS ${component_dir}/CMakeLists.txt)
get_filename_component(base_dir ${component_dir} NAME)
__component_dir_quick_check(is_component ${component_dir})
if(is_component)
idf_build_component(${component_dir})
endif()
endif()
endforeach()
endif()
endfunction()
# Add component directories to the build, given the component filters, exclusions
# extra directories, etc. passed from the root CMakeLists.txt.
if(COMPONENT_DIRS)
# User wants to fully override where components are pulled from.
spaces2list(COMPONENT_DIRS)
idf_build_set_property(__COMPONENT_TARGETS "")
foreach(component_dir ${COMPONENT_DIRS})
__project_component_dir(${component_dir})
endforeach()
else()
if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/main")
__project_component_dir("${CMAKE_CURRENT_LIST_DIR}/main")
endif()
spaces2list(EXTRA_COMPONENT_DIRS)
foreach(component_dir ${EXTRA_COMPONENT_DIRS})
__project_component_dir("${component_dir}")
endforeach()
# Look for components in the usual places: CMAKE_CURRENT_LIST_DIR/main,
# extra component dirs, and CMAKE_CURRENT_LIST_DIR/components
__project_component_dir("${CMAKE_CURRENT_LIST_DIR}/components")
endif()
spaces2list(COMPONENTS)
spaces2list(EXCLUDE_COMPONENTS)
idf_build_get_property(component_targets __COMPONENT_TARGETS)
foreach(component_target ${component_targets})
__component_get_property(component_name ${component_target} COMPONENT_NAME)
set(include 1)
if(COMPONENTS AND NOT component_name IN_LIST COMPONENTS)
set(include 0)
endif()
if(EXCLUDE_COMPONENTS AND component_name IN_LIST EXCLUDE_COMPONENTS)
set(include 0)
endif()
if(include)
list(APPEND components ${component_name})
endif()
endforeach()
if(TESTS_ALL OR BUILD_TESTS OR TEST_COMPONENTS OR TEST_EXCLUDE_COMPONENTS)
spaces2list(TEST_COMPONENTS)
spaces2list(TEST_EXCLUDE_COMPONENTS)
idf_build_get_property(component_targets __COMPONENT_TARGETS)
foreach(component_target ${component_targets})
__component_get_property(component_dir ${component_target} COMPONENT_DIR)
__component_get_property(component_name ${component_target} COMPONENT_NAME)
if(component_name IN_LIST components)
set(include 1)
if(TEST_COMPONENTS AND NOT component_name IN_LIST TEST_COMPONENTS)
set(include 0)
endif()
if(TEST_EXCLUDE_COMPONENTS AND component_name IN_LIST TEST_EXCLUDE_COMPONENTS)
set(include 0)
endif()
if(include AND EXISTS ${component_dir}/test)
__component_add(${component_dir}/test ${component_name})
list(APPEND test_components ${component_name}::test)
endif()
endif()
endforeach()
endif()
set(${components_var} "${components}" PARENT_SCOPE)
set(${test_components_var} "${test_components}" PARENT_SCOPE)
endfunction()
# Trick to temporarily redefine project(). When functions are overriden in CMake, the originals can still be accessed
# using an underscore prefixed function of the same name. The following lines make sure that __project calls
# the original project(). See https://cmake.org/pipermail/cmake/2015-October/061751.html.
function(project)
endfunction()
function(_project)
endfunction()
macro(project project_name)
# Initialize project, preparing COMPONENTS argument for idf_build_process()
# call later using external COMPONENT_DIRS, COMPONENTS_DIRS, EXTRA_COMPONENTS_DIR,
# EXTRA_COMPONENTS_DIRS, COMPONENTS, EXLUDE_COMPONENTS, TEST_COMPONENTS,
# TEST_EXLUDE_COMPONENTS, TESTS_ALL, BUILD_TESTS
__project_init(components test_components)
__target_set_toolchain()
if(CCACHE_ENABLE)
find_program(CCACHE_FOUND ccache)
if(CCACHE_FOUND)
message(STATUS "ccache will be used for faster recompilation")
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
else()
message(WARNING "enabled ccache in build but ccache program not found")
endif()
endif()
# The actual call to project()
__project(${project_name} C CXX ASM)
# Generate compile_commands.json (needs to come after project call).
set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
# Since components can import third-party libraries, the original definition of project() should be restored
# before the call to add components to the build.
function(project)
set(project_ARGV ARGV)
__project(${${project_ARGV}})
# Set the variables that project() normally sets, documented in the
# command's docs.
#
# https://cmake.org/cmake/help/v3.5/command/project.html
#
# There is some nuance when it comes to setting version variables in terms of whether
# CMP0048 is set to OLD or NEW. However, the proper behavior should have bee already handled by the original
# project call, and we're just echoing the values those variables were set to.
set(PROJECT_NAME "${PROJECT_NAME}" PARENT_SCOPE)
set(PROJECT_BINARY_DIR "${PROJECT_BINARY_DIR}" PARENT_SCOPE)
set(PROJECT_SOURCE_DIR "${PROJECT_SOURCE_DIR}" PARENT_SCOPE)
set(PROJECT_VERSION "${PROJECT_VERSION}" PARENT_SCOPE)
set(PROJECT_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}" PARENT_SCOPE)
set(PROJECT_VERSION_MINOR "${PROJECT_VERSION_MINOR}" PARENT_SCOPE)
set(PROJECT_VERSION_PATCH "${PROJECT_VERSION_PATCH}" PARENT_SCOPE)
set(PROJECT_VERSION_TWEAK "${PROJECT_VERSION_TWEAK}" PARENT_SCOPE)
set(${PROJECT_NAME}_BINARY_DIR "${${PROJECT_NAME}_BINARY_DIR}" PARENT_SCOPE)
set(${PROJECT_NAME}_SOURCE_DIR "${${PROJECT_NAME}_SOURCE_DIR}" PARENT_SCOPE)
set(${PROJECT_NAME}_VERSION "${${PROJECT_NAME}_VERSION}" PARENT_SCOPE)
set(${PROJECT_NAME}_VERSION_MAJOR "${${PROJECT_NAME}_VERSION_MAJOR}" PARENT_SCOPE)
set(${PROJECT_NAME}_VERSION_MINOR "${${PROJECT_NAME}_VERSION_MINOR}" PARENT_SCOPE)
set(${PROJECT_NAME}_VERSION_PATCH "${${PROJECT_NAME}_VERSION_PATCH}" PARENT_SCOPE)
set(${PROJECT_NAME}_VERSION_TWEAK "${${PROJECT_NAME}_VERSION_TWEAK}" PARENT_SCOPE)
endfunction()
# Prepare the following arguments for the idf_build_process() call using external
# user values:
#
# SDKCONFIG_DEFAULTS is from external SDKCONFIG_DEFAULTS
# SDKCONFIG is from external SDKCONFIG
# BUILD_DIR is set to project binary dir
#
# PROJECT_NAME is taken from the passed name from project() call
# PROJECT_DIR is set to the current directory
# PROJECT_VER is from the version text or git revision of the current repo
set(_sdkconfig_defaults "$ENV{SDKCONFIG_DEFAULTS}")
if(NOT _sdkconfig_defaults)
if(EXISTS "${CMAKE_SOURCE_DIR}/sdkconfig.defaults")
set(_sdkconfig_defaults "${CMAKE_SOURCE_DIR}/sdkconfig.defaults")
else()
set(_sdkconfig_defaults "")
endif()
endif()
if(SDKCONFIG_DEFAULTS)
set(_sdkconfig_defaults "${SDKCONFIG_DEFAULTS}")
endif()
foreach(sdkconfig_default ${_sdkconfig_defaults})
get_filename_component(sdkconfig_default "${sdkconfig_default}" ABSOLUTE)
if(NOT EXISTS "${sdkconfig_default}")
message(FATAL_ERROR "SDKCONFIG_DEFAULTS '${sdkconfig_default}' does not exist.")
endif()
list(APPEND sdkconfig_defaults ${sdkconfig_default})
endforeach()
if(SDKCONFIG)
get_filename_component(sdkconfig "${SDKCONFIG}" ABSOLUTE)
else()
set(sdkconfig "${CMAKE_CURRENT_LIST_DIR}/sdkconfig")
endif()
if(BUILD_DIR)
get_filename_component(build_dir "${BUILD_DIR}" ABSOLUTE)
if(NOT EXISTS "${build_dir}")
message(FATAL_ERROR "BUILD_DIR '${build_dir}' does not exist.")
endif()
else()
set(build_dir ${CMAKE_BINARY_DIR})
endif()
__project_get_revision(project_ver)
message(STATUS "Building ESP-IDF components for target ${IDF_TARGET}")
idf_build_process(${IDF_TARGET}
SDKCONFIG_DEFAULTS "${sdkconfig_defaults}"
SDKCONFIG ${sdkconfig}
BUILD_DIR ${build_dir}
PROJECT_NAME ${CMAKE_PROJECT_NAME}
PROJECT_DIR ${CMAKE_CURRENT_LIST_DIR}
PROJECT_VER "${project_ver}"
COMPONENTS "${components};${test_components}")
# Special treatment for 'main' component for standard projects (not part of core build system).
# Have it depend on every other component in the build. This is
# a convenience behavior for the standard project; thus is done outside of the core build system
# so that it treats components equally.
#
# This behavior should only be when user did not set REQUIRES/PRIV_REQUIRES manually.
idf_build_get_property(build_components BUILD_COMPONENT_ALIASES)
if(idf::main IN_LIST build_components)
__component_get_target(main_target idf::main)
__component_get_property(reqs ${main_target} REQUIRES)
__component_get_property(priv_reqs ${main_target} PRIV_REQUIRES)
idf_build_get_property(common_reqs __COMPONENT_REQUIRES_COMMON)
if(reqs STREQUAL common_reqs AND NOT priv_reqs) #if user has not set any requirements
if(test_components)
list(REMOVE_ITEM build_components ${test_components})
endif()
list(REMOVE_ITEM build_components idf::main)
__component_get_property(lib ${main_target} COMPONENT_LIB)
set_property(TARGET ${lib} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "${build_components}")
get_property(type TARGET ${lib} PROPERTY TYPE)
if(type STREQUAL STATIC_LIBRARY)
set_property(TARGET ${lib} APPEND PROPERTY LINK_LIBRARIES "${build_components}")
endif()
endif()
endif()
set(project_elf ${CMAKE_PROJECT_NAME}.elf)
# Create a dummy file to work around CMake requirement of having a source file while adding an
# executable. This is also used by idf_size.py to detect the target
set(project_elf_src ${CMAKE_BINARY_DIR}/project_elf_src_${IDF_TARGET}.c)
add_custom_command(OUTPUT ${project_elf_src}
COMMAND ${CMAKE_COMMAND} -E touch ${project_elf_src}
VERBATIM)
add_custom_target(_project_elf_src DEPENDS "${project_elf_src}")
add_executable(${project_elf} "${project_elf_src}")
add_dependencies(${project_elf} _project_elf_src)
if(__PROJECT_GROUP_LINK_COMPONENTS)
target_link_libraries(${project_elf} "-Wl,--start-group")
endif()
if(test_components)
target_link_libraries(${project_elf} "-Wl,--whole-archive")
foreach(test_component ${test_components})
if(TARGET ${test_component})
target_link_libraries(${project_elf} ${test_component})
endif()
endforeach()
target_link_libraries(${project_elf} "-Wl,--no-whole-archive")
endif()
idf_build_get_property(build_components BUILD_COMPONENT_ALIASES)
if(test_components)
list(REMOVE_ITEM build_components ${test_components})
endif()
target_link_libraries(${project_elf} ${build_components})
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
set(mapfile "${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}.map")
target_link_libraries(${project_elf} "-Wl,--cref -Wl,--Map=${mapfile}")
endif()
set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES
"${mapfile}" "${project_elf_src}")
idf_build_get_property(idf_path IDF_PATH)
idf_build_get_property(python PYTHON)
set(idf_size ${python} ${idf_path}/tools/idf_size.py)
if(DEFINED OUTPUT_JSON AND OUTPUT_JSON)
list(APPEND idf_size "--json")
endif()
# Add size targets, depend on map file, run idf_size.py
add_custom_target(size
DEPENDS ${project_elf}
COMMAND ${idf_size} ${mapfile}
)
add_custom_target(size-files
DEPENDS ${project_elf}
COMMAND ${idf_size} --files ${mapfile}
)
add_custom_target(size-components
DEPENDS ${project_elf}
COMMAND ${idf_size} --archives ${mapfile}
)
unset(idf_size)
# Add DFU build and flash targets
__add_dfu_targets()
# Add UF2 build targets
__add_uf2_targets()
idf_build_executable(${project_elf})
__project_info("${test_components}")
endmacro()
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