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CMakeLists.txt
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CMakeLists.txt
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# Copyright (c) 2020-2021 ARM Limited. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
# This is the boilerplate for Mbed OS
cmake_minimum_required(VERSION 3.19.0 FATAL_ERROR)
option(BUILD_GREENTEA_TESTS "Build greentea tests only." OFF)
if(BUILD_GREENTEA_TESTS)
# Usually we rely on the application to set MBED_CONFIG_PATH and include
# app.cmake. They are both required if we're building an application to run
# on an mbed-target.
set(MBED_CONFIG_PATH ${CMAKE_CURRENT_BINARY_DIR} CACHE STRING "")
# TODO: Remove when https://github.com/ARMmbed/mbed-os/issues/14518 is fixed
include(${CMAKE_CURRENT_LIST_DIR}/tools/cmake/app.cmake)
endif()
if(${CMAKE_CROSSCOMPILING})
include(${MBED_CONFIG_PATH}/mbed_config.cmake)
include(mbed_set_linker_script)
endif()
project(mbed-os)
# Add all paths to the list files within Mbed OS
list(APPEND CMAKE_MODULE_PATH
"${mbed-os_SOURCE_DIR}/platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/scripts;${mbed-os_SOURCE_DIR}/targets/TARGET_Cypress/scripts;${mbed-os_SOURCE_DIR}/targets/TARGET_NXP/scripts;${mbed-os_SOURCE_DIR}/targets/TARGET_NUVOTON/scripts/"
)
add_subdirectory(extern)
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
include(CTest)
if((NOT BUILD_GREENTEA_TESTS) AND BUILD_TESTING)
# Building unit tests only.
add_definitions(-DUNITTEST)
add_subdirectory(UNITTESTS)
endif()
endif()
add_library(mbed-core INTERFACE)
add_library(mbed-os INTERFACE)
target_link_libraries(mbed-os
INTERFACE
mbed-rtos
mbed-core
)
add_library(mbed-baremetal INTERFACE)
target_link_libraries(mbed-baremetal
INTERFACE
mbed-core
)
# Validate selected C library type
# The C library type selected has to match the library that the target can support
if(${CMAKE_CROSSCOMPILING})
if(${MBED_C_LIB} STREQUAL "small")
if(NOT "small" IN_LIST MBED_TARGET_SUPPORTED_C_LIBS)
if("std" IN_LIST MBED_TARGET_SUPPORTED_C_LIBS)
message(WARNING
"We noticed that target.c_lib is set to `${MBED_C_LIB}`."
" As the ${MBED_TARGET} target does not support a small C library for the ${MBED_TOOLCHAIN} toolchain,"
" we are using the standard C library instead."
)
set(MBED_C_LIB "std" CACHE STRING "")
endif()
endif()
elseif(NOT ${MBED_C_LIB} IN_LIST MBED_TARGET_SUPPORTED_C_LIBS)
message(FATAL_ERROR
"Invalid `target.c_lib` ('${MBED_C_LIB}') for '${MBED_TARGET}' target."
"\nPossible value(s): ${MBED_TARGET_SUPPORTED_C_LIBS}"
)
endif()
# Validate selected printf library
set(MBED_PRINTF_LIB_TYPES std minimal-printf)
if(NOT ${MBED_PRINTF_LIB} IN_LIST MBED_PRINTF_LIB_TYPES)
message(FATAL_ERROR
"Invalid printf library type '${MBED_PRINTF_LIB}'. Possible values:\n ${MBED_PRINTF_LIB_TYPES}"
)
endif()
mbed_set_cpu_core_definitions(mbed-core)
if(${MBED_TOOLCHAIN_FILE_USED})
mbed_set_profile_options(mbed-core ${MBED_TOOLCHAIN})
mbed_set_c_lib(mbed-core ${MBED_C_LIB})
mbed_set_printf_lib(mbed-core ${MBED_PRINTF_LIB})
target_compile_features(mbed-core
INTERFACE
c_std_11
cxx_std_14
)
endif()
target_compile_definitions(mbed-core
INTERFACE
TARGET_NAME=${MBED_TARGET}
${MBED_TARGET_DEFINITIONS}
${MBED_CONFIG_DEFINITIONS}
)
# Add MBED_TEST_MODE for backward compatibility with Greentea tests written for use with Mbed CLI 1
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
if(NOT BUILD_GREENTEA_TESTS)
target_compile_definitions(${PROJECT_NAME}
INTERFACE
MBED_TEST_MODE
)
endif()
endif()
# We need to generate a "response file" to pass to the C preprocessor when we preprocess the linker
# script, because of path length limitations on Windows. We set the response file and bind the path
# to a global property here. The MBED_TARGET being built queries this global property when it sets
# the linker script.
#
# We must set this global property before the targets subdirectory is added to the project. This is
# required because the MBED_TARGET depends on the response file. If the path to the response file
# is not defined when the target requests it the config definitions will not be passed to CPP.
#
# TODO: Remove this and find a more idiomatic way of passing compile definitions to CPP without
# using response files or global properties.
mbed_generate_options_for_linker(mbed-core RESPONSE_FILE_PATH)
set_property(GLOBAL PROPERTY COMPILE_DEFS_RESPONSE_FILE ${RESPONSE_FILE_PATH})
# Add compile definitions for backward compatibility with the toolchain
# supported. New source files should instead check for __GNUC__ and __clang__
# for the GCC_ARM and ARM toolchains respectively.
if(${MBED_TOOLCHAIN} STREQUAL "GCC_ARM")
target_compile_definitions(mbed-core
INTERFACE
TOOLCHAIN_GCC_ARM
TOOLCHAIN_GCC
)
elseif(${MBED_TOOLCHAIN} STREQUAL "ARM")
target_compile_definitions(mbed-core
INTERFACE
TOOLCHAIN_ARM
)
endif()
endif()
# Include mbed.h and config from generate folder
target_include_directories(mbed-core
INTERFACE
${CMAKE_CURRENT_SOURCE_DIR}
)
# These targets are made visible here so their source files which
# are spread in different directories can be referenced and can be linked against
# by libraries that depend on them.
# TODO CMake: Should the source files be moved?
add_library(mbed-device_key INTERFACE)
add_library(mbed-rtos INTERFACE)
# Include targets/ first, because any post-build hook needs to be defined
# before other parts of Mbed OS can add greentea tests which require
# mbed_set_post_build().
add_subdirectory(targets)
add_subdirectory(cmsis)
add_subdirectory(drivers)
add_subdirectory(hal)
add_subdirectory(platform)
add_subdirectory(rtos)
add_subdirectory(storage)
add_subdirectory(events)
add_subdirectory(connectivity)
# The directories below contain optional target libraries
add_subdirectory(drivers/device_key EXCLUDE_FROM_ALL)
add_subdirectory(drivers/usb EXCLUDE_FROM_ALL)
add_subdirectory(features EXCLUDE_FROM_ALL)
add_subdirectory(cmsis/CMSIS_5/CMSIS/RTOS2 EXCLUDE_FROM_ALL)
add_subdirectory(cmsis/device/rtos EXCLUDE_FROM_ALL)
if(${CMAKE_CROSSCOMPILING})
# Ensure the words that make up the Mbed target name are separated with a hyphen, lowercase, and with the `mbed-` prefix.
string(TOLOWER ${MBED_TARGET} MBED_TARGET_CONVERTED)
string(REPLACE "_" "-" MBED_TARGET_CONVERTED ${MBED_TARGET_CONVERTED})
string(PREPEND MBED_TARGET_CONVERTED "mbed-")
target_link_libraries(mbed-core INTERFACE ${MBED_TARGET_CONVERTED})
endif()
# Ninja requires to be forced for response files
if ("${CMAKE_GENERATOR}" MATCHES "Ninja")
# known issue ARMClang and Ninja with response files for windows
# https://gitlab.kitware.com/cmake/cmake/-/issues/21093
# This gets fixed in newer cmake version
# https://gitlab.kitware.com/cmake/cmake/-/merge_requests/6484
if((CMAKE_HOST_SYSTEM_NAME MATCHES "Windows") AND ((${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.22.0") OR (NOT CMAKE_CXX_COMPILER_ID MATCHES "ARMClang")))
set(CMAKE_NINJA_FORCE_RESPONSE_FILE 1 CACHE INTERNAL "")
endif()
endif()
# TODO: Remove once all example applications have removed it
function(mbed_configure_app_target target)
endfunction()