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esp-idf/tools/cmake/idf_functions.cmake

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CMake
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#
# Load cmake modules
#
get_property(__idf_environment_set GLOBAL PROPERTY __IDF_ENVIRONMENT_SET)
if(NOT __idf_environment_set)
# Set IDF_PATH, as nothing else will work without this.
set(IDF_PATH "$ENV{IDF_PATH}")
if(NOT IDF_PATH)
# Documentation says you should set IDF_PATH in your environment, but we
# can infer it relative to tools/cmake directory if it's not set.
get_filename_component(IDF_PATH "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
endif()
file(TO_CMAKE_PATH "${IDF_PATH}" IDF_PATH)
set(ENV{IDF_PATH} ${IDF_PATH})
set(CMAKE_MODULE_PATH
"${IDF_PATH}/tools/cmake"
"${IDF_PATH}/tools/cmake/third_party"
${CMAKE_MODULE_PATH})
include(utilities)
include(components)
include(kconfig)
include(targets)
include(git_submodules)
include(GetGitRevisionDescription)
include(crosstool_version_check)
include(ldgen)
set_default(PYTHON "python")
if(NOT PYTHON_DEPS_CHECKED AND NOT BOOTLOADER_BUILD)
message(STATUS "Checking Python dependencies...")
execute_process(COMMAND "${PYTHON}" "${IDF_PATH}/tools/check_python_dependencies.py"
RESULT_VARIABLE result)
if(NOT result EQUAL 0)
message(FATAL_ERROR "Some Python dependencies must be installed. Check above message for details.")
endif()
endif()
idf_set_target()
set_property(GLOBAL APPEND PROPERTY __IDF_COMPONENTS_PREFIX "idf_component")
set_property(GLOBAL PROPERTY __IDF_ENVIRONMENT_SET 1)
endif()
macro(idf_set_variables)
set_default(IDF_BUILD_ARTIFACTS OFF)
if(IDF_BUILD_ARTIFACTS)
if(NOT IDF_BUILD_ARTIFACTS_DIR OR NOT IDF_PROJECT_EXECUTABLE)
message(FATAL_ERROR "IDF_BUILD_ARTIFACTS and IDF_PROJECT_EXECUTABLE needs to be specified \
if IDF_BUILD_ARTIFACTS is ON.")
endif()
endif()
set_default(IDF_COMPONENT_DIRS "${IDF_EXTRA_COMPONENT_DIRS} ${IDF_PATH}/components")
set_default(IDF_COMPONENTS "")
set_default(IDF_COMPONENT_REQUIRES_COMMON "cxx ${IDF_TARGET} newlib freertos heap log soc")
set(IDF_PROJECT_PATH "${CMAKE_SOURCE_DIR}")
spaces2list(IDF_COMPONENT_DIRS)
spaces2list(IDF_COMPONENTS)
spaces2list(IDF_COMPONENT_REQUIRES_COMMON)
endmacro()
# Add all the IDF global compiler & preprocessor options
# (applied to all components). Some are config-dependent
#
# If you only want to set options for a particular component,
# don't call or edit this function. TODO DESCRIBE WHAT TO DO INSTEAD
#
function(idf_set_global_compile_options)
# Temporary trick to support both gcc5 and gcc8 builds
if(CMAKE_C_COMPILER_VERSION VERSION_EQUAL 5.2.0)
set(GCC_NOT_5_2_0 0 CACHE STRING "GCC is 5.2.0 version")
else()
set(GCC_NOT_5_2_0 1 CACHE STRING "GCC is not 5.2.0 version")
endif()
list(APPEND compile_definitions "GCC_NOT_5_2_0=${GCC_NOT_5_2_0}")
list(APPEND compile_definitions "ESP_PLATFORM" "HAVE_CONFIG_H")
list(APPEND compile_options "${CMAKE_C_FLAGS}")
list(APPEND c_compile_options "${CMAKE_C_FLAGS}")
list(APPEND cxx_compile_options "${CMAKE_CXX_FLAGS}")
add_definitions(-DPROJECT_NAME=\"${PROJECT_NAME}\")
if(CONFIG_OPTIMIZATION_LEVEL_RELEASE)
list(APPEND compile_options "-Os")
else()
list(APPEND compile_options "-Og")
endif()
list(APPEND c_compile_options "-std=gnu99")
list(APPEND cxx_compile_options "-std=gnu++11" "-fno-rtti")
if(CONFIG_CXX_EXCEPTIONS)
list(APPEND cxx_compile_options "-fexceptions")
else()
list(APPEND cxx_compile_options "-fno-exceptions")
endif()
# Default compiler configuration
list(APPEND compile_options "-ffunction-sections"
"-fdata-sections"
"-fstrict-volatile-bitfields"
"-nostdlib")
list(APPEND compile_options "-Wall"
"-Werror=all"
"-Wno-error=unused-function"
"-Wno-error=unused-but-set-variable"
"-Wno-error=unused-variable"
"-Wno-error=deprecated-declarations"
"-Wextra"
"-Wno-unused-parameter"
"-Wno-sign-compare")
list(APPEND c_compile_options "-Wno-old-style-declaration")
if(CONFIG_DISABLE_GCC8_WARNINGS)
list(APPEND compile_options
"-Wno-parentheses"
"-Wno-sizeof-pointer-memaccess"
"-Wno-clobbered"
)
# doesn't use GCC_NOT_5_2_0 because idf_set_global_variables was not called before
if(NOT CMAKE_C_COMPILER_VERSION VERSION_EQUAL 5.2.0)
list(APPEND compile_options
"-Wno-format-overflow"
"-Wno-stringop-truncation"
"-Wno-misleading-indentation"
"-Wno-cast-function-type"
"-Wno-implicit-fallthrough"
"-Wno-unused-const-variable"
"-Wno-switch-unreachable"
"-Wno-format-truncation"
"-Wno-memset-elt-size"
"-Wno-int-in-bool-context"
)
endif()
endif()
# Stack protection
if(NOT BOOTLOADER_BUILD)
if(CONFIG_STACK_CHECK_NORM)
list(APPEND compile_options "-fstack-protector")
elseif(CONFIG_STACK_CHECK_STRONG)
list(APPEND compile_options "-fstack-protector-strong")
elseif(CONFIG_STACK_CHECK_ALL)
list(APPEND compile_options "-fstack-protector-all")
endif()
endif()
if(CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED)
list(APPEND compile_definitions "NDEBUG")
endif()
# Always generate debug symbols (even in Release mode, these don't
# go into the final binary so have no impact on size)
list(APPEND compile_options "-ggdb")
# 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)
list(APPEND c_compile_options ${EXTRA_CFLAGS})
list(APPEND cxx_compile_options ${EXTRA_CXXFLAGS})
list(APPEND compile_options ${EXTRA_CPPFLAGS})
set_default(IDF_COMPILE_DEFINITIONS "${compile_definitions}")
set_default(IDF_COMPILE_OPTIONS "${compile_options}")
set_default(IDF_C_COMPILE_OPTIONS "${c_compile_options}")
set_default(IDF_CXX_COMPILE_OPTIONS "${cxx_compile_options}")
set_default(IDF_INCLUDE_DIRECTORIES "${CONFIG_DIR}")
set(IDF_COMPILE_DEFINITIONS ${IDF_COMPILE_DEFINITIONS} PARENT_SCOPE)
set(IDF_COMPILE_OPTIONS ${IDF_COMPILE_OPTIONS} PARENT_SCOPE)
set(IDF_C_COMPILE_OPTIONS ${IDF_C_COMPILE_OPTIONS} PARENT_SCOPE)
set(IDF_CXX_COMPILE_OPTIONS ${IDF_CXX_COMPILE_OPTIONS} PARENT_SCOPE)
set(IDF_INCLUDE_DIRECTORIES ${CONFIG_DIR} PARENT_SCOPE)
endfunction()
# Verify the IDF environment is configured correctly (environment, toolchain, etc)
function(idf_verify_environment)
if(NOT CMAKE_PROJECT_NAME)
message(FATAL_ERROR "Internal error, IDF project.cmake should have set this variable already")
endif()
# Check toolchain is configured properly in cmake
if(NOT ( ${CMAKE_SYSTEM_NAME} STREQUAL "Generic" AND ${CMAKE_C_COMPILER} MATCHES xtensa))
message(FATAL_ERROR "Internal error, toolchain has not been set correctly by project "
"(or an invalid CMakeCache.txt file has been generated somehow)")
endif()
#
# Warn if the toolchain version doesn't match
#
# TODO: make these platform-specific for diff toolchains
get_expected_ctng_version(expected_toolchain expected_gcc)
gcc_version_check("${expected_gcc}")
crosstool_version_check("${expected_toolchain}")
endfunction()
# idf_get_git_revision
#
# Set global IDF_VER to the git revision of ESP-IDF.
#
# Running git_describe() here automatically triggers rebuilds
# if the ESP-IDF git version changes
function(idf_get_git_revision)
git_describe(IDF_VER_GIT "${IDF_PATH}")
if(EXISTS "${IDF_PATH}/version.txt")
file(STRINGS "${IDF_PATH}/version.txt" IDF_VER)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${IDF_PATH}/version.txt")
else()
set(IDF_VER ${IDF_VER_GIT})
endif()
message(STATUS "IDF_VER: ${IDF_VER}")
add_definitions(-DIDF_VER=\"${IDF_VER}\")
git_submodule_check("${IDF_PATH}")
set(IDF_VER ${IDF_VER} PARENT_SCOPE)
endfunction()
# app_get_revision
#
# Set global PROJECT_VER
#
# If PROJECT_VER variable set in project CMakeLists.txt file, its value will be used.
# Else, if the _project_path/version.txt exists, its contents will be used as PROJECT_VER.
# Else, if the project is located inside a Git repository, the output of git describe will be used.
# Otherwise, PROJECT_VER will be empty.
function(app_get_revision _project_path)
git_describe(PROJECT_VER_GIT "${_project_path}")
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()
set(PROJECT_VER ${PROJECT_VER_GIT})
endif()
endif()
message(STATUS "Project version: ${PROJECT_VER}")
git_submodule_check("${_project_path}")
set(PROJECT_VER ${PROJECT_VER} PARENT_SCOPE)
endfunction()
# idf_link_components
#
# Link library components to the target
function(idf_link_components target components)
foreach(component ${components})
component_get_target(component_target ${component})
# Add each component library's link-time dependencies (which are otherwise ignored) to the executable
# LINK_DEPENDS in order to trigger a re-link when needed (on Ninja/Makefile generators at least).
# (maybe this should probably be something CMake does, but it doesn't do it...)
if(TARGET ${component_target})
get_target_property(type ${component_target} TYPE)
get_target_property(imported ${component_target} IMPORTED)
if(NOT imported)
if(${type} STREQUAL STATIC_LIBRARY OR ${type} STREQUAL EXECUTABLE)
get_target_property(link_depends "${component_target}" LINK_DEPENDS)
if(link_depends)
set_property(TARGET ${target} APPEND PROPERTY LINK_DEPENDS "${link_depends}")
endif()
endif()
endif()
if(${type} MATCHES .+_LIBRARY)
list(APPEND libraries ${component_target})
endif()
endif()
endforeach()
if(libraries)
# gc-sections is necessary for linking some IDF binary libraries
# (and without it, IDF apps are much larger than they should be)
target_link_libraries(${target} "-Wl,--gc-sections")
target_link_libraries(${target} "-Wl,--start-group")
target_link_libraries(${target} ${libraries})
message(STATUS "Component libraries: ${IDF_COMPONENT_LIBRARIES}")
endif()
endfunction()
# idf_import_components
#
# Adds ESP-IDF as a subdirectory to the current project and imports the components
function(idf_import_components var idf_path build_path)
add_subdirectory(${idf_path} ${build_path})
set(${var} ${BUILD_COMPONENTS} PARENT_SCOPE)
endfunction()
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