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Code Issues Actions 3 Packages Projects Releases Wiki Activity
11f3898e33
esp-idf/tools/cmake/project.cmake
Djordje Nedic 11f3898e33 tools: Fix cmake variable propagation 
This fixes the issue where component CMAKE variables propagate by default to the entire project, for instance compiler flags.
Useful for when you want to have component specific compiler flags or defines.

Closes https://github.com/espressif/esp-idf/pull/8806
Closes https://github.com/espressif/esp-idf/issues/8881
2022-05-16 16:55:34 +02:00

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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)
include(${CMAKE_CURRENT_LIST_DIR}/targets.cmake)
# Initialize build target for this build using the environment variable or
# value passed externally.
__target_init()
# The mere inclusion of this CMake file sets up some interal build properties.
# These properties can be modified in between this inclusion the the idf_build_process
# call.
include(${CMAKE_CURRENT_LIST_DIR}/idf.cmake)
# setting PYTHON variable here for compatibility only, new code should use
# idf_build_get_property(variable PYTHON)
idf_build_get_property(PYTHON PYTHON)
if(NOT PYTHON)
message(FATAL_ERROR "Internal error, PYTHON build property not set correctly.")
endif()
# legacy variable for compatibility
set(IDFTOOL ${PYTHON} "${IDF_PATH}/tools/idf.py")
# 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()
# Enable the component manager for regular projects if not explicitly disabled.
if(NOT "$ENV{IDF_COMPONENT_MANAGER}" EQUAL "0")
idf_build_set_property(__ENABLE_COMPONENT_MANAGER 1)
endif()
#
# Get the project version from either a version file or the Git revision. This is passed
# to the idf_build_process call. Dependencies are also set here for when the version file
# changes (if it is used).
#
function(__project_get_revision var)
set(_project_path "${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} "${PROJECT_VER}" PARENT_SCOPE)
endfunction()
# paths_with_spaces_to_list
#
# Replacement for spaces2list in cases where it was previously used on
# directory lists.
#
# If the variable doesn't contain spaces, (e.g. is already a CMake list)
# then the variable is unchanged. Otherwise an external Python script is called
# to try to split the paths, and the variable is updated with the result.
#
# This feature is added only for compatibility. Please do not introduce new
# space separated path lists.
#
function(paths_with_spaces_to_list variable_name)
if("${${variable_name}}" MATCHES "[ \t]")
idf_build_get_property(python PYTHON)
idf_build_get_property(idf_path IDF_PATH)
execute_process(
COMMAND ${python}
"${idf_path}/tools/split_paths_by_spaces.py"
"--var-name=${variable_name}"
"${${variable_name}}"
WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}"
OUTPUT_VARIABLE result
RESULT_VARIABLE ret)
if(NOT ret EQUAL 0)
message(FATAL_ERROR "Failed to parse ${variable_name}, see diagnostics above")
endif()
set("${variable_name}" "${result}" PARENT_SCOPE)
endif()
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)
idf_build_get_property(debug_prefix_map_gdbinit DEBUG_PREFIX_MAP_GDBINIT)
# 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")
# Generate component dependency graph
depgraph_generate("${build_dir}/component_deps.dot")
# We now have the following component-related variables:
#
# build_components is the list of components to include in the build.
# build_component_paths is the paths to all of these components, obtained from the component dependencies file.
#
# Print the list of found components and test components
string(REPLACE ";" " " build_components "${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)
# The directory itself is a valid idf component
if(EXISTS ${component_dir}/CMakeLists.txt)
idf_build_component(${component_dir})
else()
# otherwise, check whether the subfolders are potential idf components
file(GLOB component_dirs ${component_dir}/*)
foreach(component_dir ${component_dirs})
if(IS_DIRECTORY ${component_dir})
__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.
paths_with_spaces_to_list(COMPONENT_DIRS)
idf_build_set_property(__COMPONENT_TARGETS "")
foreach(component_dir ${COMPONENT_DIRS})
get_filename_component(component_abs_path ${component_dir} ABSOLUTE)
if(NOT EXISTS ${component_abs_path})
message(FATAL_ERROR "Directory specified in COMPONENT_DIRS doesn't exist: ${component_abs_path}")
endif()
__project_component_dir(${component_dir})
endforeach()
else()
if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/main")
__project_component_dir("${CMAKE_CURRENT_LIST_DIR}/main")
endif()
paths_with_spaces_to_list(EXTRA_COMPONENT_DIRS)
foreach(component_dir ${EXTRA_COMPONENT_DIRS})
get_filename_component(component_abs_path ${component_dir} ABSOLUTE)
if(NOT EXISTS ${component_abs_path})
message(FATAL_ERROR "Directory specified in EXTRA_COMPONENT_DIRS doesn't exist: ${component_abs_path}")
endif()
__project_component_dir("${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("${CMAKE_CURRENT_LIST_DIR}/components")
endif()
# For bootloader components, we only need to set-up the Kconfig files.
# Indeed, bootloader is currently compiled as a subproject, thus,
# its components are not part of the main project.
# However, in order to be able to configure these bootloader components
# using menuconfig, we need to look for their Kconfig-related files now.
file(GLOB bootloader_component_dirs "${CMAKE_CURRENT_LIST_DIR}/bootloader_components/*")
list(SORT bootloader_component_dirs)
foreach(bootloader_component_dir ${bootloader_component_dirs})
if(IS_DIRECTORY ${bootloader_component_dir})
__component_dir_quick_check(is_component ${bootloader_component_dir})
if(is_component)
__kconfig_bootloader_component_add("${bootloader_component_dir}")
endif()
endif()
endforeach()
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 ON)
# 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} PRIVATE "-Wl,--start-group")
endif()
if(test_components)
target_link_libraries(${project_elf} PRIVATE "-Wl,--whole-archive")
foreach(test_component ${test_components})
if(TARGET ${test_component})
target_link_libraries(${project_elf} PRIVATE ${test_component})
endif()
endforeach()
target_link_libraries(${project_elf} PRIVATE "-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()
foreach(build_component ${build_components})
__component_get_target(build_component_target ${build_component})
__component_get_property(whole_archive ${build_component_target} WHOLE_ARCHIVE)
if(whole_archive)
message(STATUS "Component ${build_component} will be linked with -Wl,--whole-archive")
target_link_libraries(${project_elf} PRIVATE
"-Wl,--whole-archive"
${build_component}
"-Wl,--no-whole-archive")
else()
target_link_libraries(${project_elf} PRIVATE ${build_component})
endif()
endforeach()
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
set(mapfile "${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}.map")
set(idf_target "${IDF_TARGET}")
string(TOUPPER ${idf_target} idf_target)
target_link_libraries(${project_elf} PRIVATE "-Wl,--cref" "-Wl,--defsym=IDF_TARGET_${idf_target}=0"
"-Wl,--Map=\"${mapfile}\"")
unset(idf_target)
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 ${mapfile}
COMMAND ${idf_size} ${mapfile}
)
add_custom_target(size-files
DEPENDS ${mapfile}
COMMAND ${idf_size} --files ${mapfile}
)
add_custom_target(size-components
DEPENDS ${mapfile}
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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