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CMakeLists.txt
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CMakeLists.txt
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# *DOCUMENTATION*
#
# Note that this is *NOT* the top-level CMakeLists.txt. That's in the
# application. See the Application Development Primer documentation
# for details.
#
# To see a list of typical targets execute "make usage"
# More info can be located in ./README.rst
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
if(NOT DEFINED ZEPHYR_BINARY_DIR)
message(FATAL_ERROR "A user error has occured.
cmake was invoked with '${CMAKE_CURRENT_LIST_DIR}' specified as the source directory,
but it must be invoked with an application source directory,
such as '${CMAKE_CURRENT_LIST_DIR}/samples/hello_world'.
Debug variables:
CMAKE_CACHEFILE_DIR: ${CMAKE_CACHEFILE_DIR}
")
endif()
project(Zephyr-Kernel VERSION ${PROJECT_VERSION})
enable_language(C CXX ASM)
# Verify that the toolchain can compile a dummy file, if it is not we
# won't be able to test for compatiblity with certain C flags.
check_c_compiler_flag("" toolchain_is_ok)
assert(toolchain_is_ok "The toolchain is unable to build a dummy C file. See CMakeError.log.")
set(CMAKE_EXECUTABLE_SUFFIX .elf)
set(ZEPHYR_PREBUILT_EXECUTABLE zephyr_prebuilt)
set(OFFSETS_H_TARGET offsets_h)
set(SYSCALL_MACROS_H_TARGET syscall_macros_h_target)
set(SYSCALL_LIST_H_TARGET syscall_list_h_target)
set(DRIVER_VALIDATION_H_TARGET driver_validation_h_target)
set(KOBJ_TYPES_H_TARGET kobj_types_h_target)
set(LINKER_SCRIPT_TARGET linker_script_target)
if(NOT PROPERTY_LINKER_SCRIPT_DEFINES)
set_property(GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES -D__GCC_LINKER_CMD__)
endif()
define_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT BRIEF_DOCS " " FULL_DOCS " ")
set_property( GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-little${ARCH}) # BFD format
# "zephyr_interface" is a source-less library that encapsulates all the global
# compiler options needed by all source files. All zephyr libraries,
# including the library named "zephyr" link with this library to
# obtain these flags.
# https://cmake.org/cmake/help/latest/manual/cmake-buildsystem.7.html#interface-libraries
add_library(zephyr_interface INTERFACE)
# "zephyr" is a catch-all CMake library for source files that can be
# built purely with the include paths, defines, and other compiler
# flags that come with zephyr_interface.
zephyr_library_named(zephyr)
zephyr_include_directories(
kernel/include
${ARCH_DIR}/${ARCH}/include
include
include/drivers
${PROJECT_BINARY_DIR}/include/generated
${USERINCLUDE}
${STDINCLUDE}
)
# Don't add non-existing include directories, it creates noise and
# warnings in some tooling
foreach(optional_include_dir
${SOC_DIR}/${ARCH}/${SOC_PATH}
${SOC_DIR}/${ARCH}/${SOC_PATH}/include
${SOC_DIR}/${ARCH}/${SOC_FAMILY}/include
)
if(EXISTS ${optional_include_dir})
zephyr_include_directories(${optional_include_dir})
endif()
endforeach()
zephyr_compile_definitions(
KERNEL
__ZEPHYR__=1
)
# @Intent: Set compiler flags to enable buffer overflow checks in libc functions
# @config in CONFIG_NO_OPTIMIZATIONS optional : Optimizations may affect security
toolchain_cc_security_fortify()
# @Intent: Set compiler flags to detect general stack overflows across all functions
if(CONFIG_STACK_CANARIES)
toolchain_cc_security_canaries()
endif()
if(BUILD_VERSION)
zephyr_compile_definitions(
BUILD_VERSION=${BUILD_VERSION}
)
endif()
# @Intent: Obtain compiler optimizations flags and store in variables
# @details:
# Kconfig.zephyr "Optimization level" is a kconfig choice, ensuring
# only *one* of CONFIG_{NO,DEBUG,SPEED,SIZE}_OPTIMIZATIONS is set.
# Refer to Kconfig.zephyr for selection logic and description of these choices.
# toolchain_cc_optimize_*() macros must provide the mapping from these kconfigs
# to compiler flags. Each macro will store the flags in a CMake variable, whose
# name is passed as argument (somewhat like by reference).
#
# If the user wants to tweak the optimizations, there are two ways:
# 1) Using EXTRA_CFLAGS which is applied regardless of kconfig choice, or
# 2) Rely on override support being implemented by your toolchain_cc_optimize_*()
#
toolchain_cc_optimize_for_no_optimizations_flag(OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG)
toolchain_cc_optimize_for_debug_flag(OPTIMIZE_FOR_DEBUG_FLAG)
toolchain_cc_optimize_for_speed_flag(OPTIMIZE_FOR_SPEED_FLAG)
toolchain_cc_optimize_for_size_flag(OPTIMIZE_FOR_SIZE_FLAG)
# From kconfig choice, pick the actual OPTIMIZATION_FLAG to use.
# Kconfig choice ensures only one of these CONFIG_*_OPTIMIZATIONS is set.
if(CONFIG_NO_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG})
elseif(CONFIG_DEBUG_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_DEBUG_FLAG})
elseif(CONFIG_SPEED_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_SPEED_FLAG})
elseif(CONFIG_SIZE_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_SIZE_FLAG}) # Default in kconfig
else()
assert(0 "Unreachable code. Expected optimization level to have been chosen. See Kconfig.zephyr")
endif()
# Apply the final optimization flag(s)
zephyr_compile_options(${OPTIMIZATION_FLAG})
# @Intent: Obtain compiler specific flags related to C++ that are not influenced by kconfig
toolchain_cc_cpp_base_flags(CPP_BASE_FLAGS)
foreach(flag ${CPP_BASE_FLAGS})
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:CXX>:${flag}>
)
endforeach()
# @Intent: Obtain compiler specific flags for compiling under different ISO standards of C++
toolchain_cc_cpp_dialect_std_98_flags(CPP_DIALECT_STD_98_FLAGS)
toolchain_cc_cpp_dialect_std_11_flags(CPP_DIALECT_STD_11_FLAGS)
toolchain_cc_cpp_dialect_std_14_flags(CPP_DIALECT_STD_14_FLAGS)
toolchain_cc_cpp_dialect_std_17_flags(CPP_DIALECT_STD_17_FLAGS)
toolchain_cc_cpp_dialect_std_2a_flags(CPP_DIALECT_STD_2A_FLAGS)
# From kconfig choice, pick a single dialect.
# Kconfig choice ensures only one of these CONFIG_STD_CPP* is set.
if(CONFIG_STD_CPP98)
set(STD_CPP_DIALECT_FLAGS ${CPP_DIALECT_STD_98_FLAGS})
elseif(CONFIG_STD_CPP11)
set(STD_CPP_DIALECT_FLAGS ${CPP_DIALECT_STD_11_FLAGS}) # Default in kconfig
elseif(CONFIG_STD_CPP14)
set(STD_CPP_DIALECT_FLAGS ${CPP_DIALECT_STD_14_FLAGS})
elseif(CONFIG_STD_CPP17)
set(STD_CPP_DIALECT_FLAGS ${CPP_DIALECT_STD_17_FLAGS})
elseif(CONFIG_STD_CPP2A)
set(STD_CPP_DIALECT_FLAGS ${CPP_DIALECT_STD_2A_FLAGS})
else()
assert(0 "Unreachable code. Expected C++ standard to have been chosen. See Kconfig.zephyr.")
endif()
foreach(flag ${STD_CPP_DIALECT_FLAGS})
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:CXX>:${flag}>
)
endforeach()
if(NOT CONFIG_EXCEPTIONS)
# @Intent: Obtain compiler specific flags related to C++ Exceptions
toolchain_cc_cpp_no_exceptions_flag(CPP_NO_EXCEPTIONS_FLAG)
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:CXX>:${CPP_NO_EXCEPTIONS_FLAG}>
)
endif()
if(NOT CONFIG_RTTI)
# @Intent: Obtain compiler specific flags related to C++ Run Time Type Information
toolchain_cc_cpp_no_rtti_flag(CPP_NO_RTTI_FLAG)
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:CXX>:${CPP_NO_RTTI_FLAG}>
)
endif()
if(CONFIG_MISRA_SANE)
zephyr_compile_options($<$<COMPILE_LANGUAGE:C>:-Werror=vla>)
zephyr_compile_options($<$<COMPILE_LANGUAGE:CXX>:-Werror=vla>)
endif()
# @Intent: Obtain compiler specific flags for standard C includes
toolchain_cc_nostdinc()
zephyr_compile_options(
-g # TODO: build configuration enough?
-Wall
-Wformat
-Wformat-security
-Wno-format-zero-length
-imacros ${AUTOCONF_H}
-ffreestanding
-Wno-main
-fno-common
${TOOLCHAIN_C_FLAGS}
)
# @Intent: Obtain compiler specific flags related to assembly
toolchain_cc_asm_base_flags(ASM_BASE_FLAG)
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:ASM>:${ASM_BASE_FLAG}>
)
# Common toolchain-agnostic assembly flags
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:ASM>:-D_ASMLANGUAGE>
)
zephyr_ld_options(
${TOOLCHAIN_LD_FLAGS}
)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
-nostdlib
-static
-no-pie
)
endif()
if(CONFIG_LIB_CPLUSPLUS)
zephyr_ld_options(
-lstdc++
)
endif()
# ==========================================================================
#
# cmake -DW=... settings
#
# W=1 - warnings that may be relevant and does not occur too often
# W=2 - warnings that occur quite often but may still be relevant
# W=3 - the more obscure warnings, can most likely be ignored
# ==========================================================================
if(W MATCHES "1")
zephyr_compile_options(
-Wextra
-Wunused
-Wno-unused-parameter
-Wmissing-declarations
-Wmissing-format-attribute
-Wold-style-definition
)
zephyr_cc_option(
-Wmissing-prototypes
-Wmissing-include-dirs
-Wunused-but-set-variable
-Wno-missing-field-initializers
)
endif()
if(W MATCHES "2")
zephyr_compile_options(
-Waggregate-return
-Wcast-align
-Wdisabled-optimization
-Wnested-externs
-Wshadow
)
zephyr_cc_option(
-Wlogical-op
-Wmissing-field-initializers
)
endif()
if(W MATCHES "3")
zephyr_compile_options(
-Wbad-function-cast
-Wcast-qual
-Wconversion
-Wpacked
-Wpadded
-Wpointer-arith
-Wredundant-decls
-Wswitch-default
)
zephyr_cc_option(
-Wpacked-bitfield-compat
-Wvla
)
endif()
# Allow the user to inject options when calling cmake, e.g.
# 'cmake -DEXTRA_CFLAGS="-Werror -Wno-deprecated-declarations" ..'
include(cmake/extra_flags.cmake)
zephyr_cc_option(-fno-asynchronous-unwind-tables)
zephyr_cc_option(-fno-pie)
zephyr_cc_option(-fno-pic)
zephyr_cc_option(-fno-strict-overflow)
zephyr_cc_option(-Wno-pointer-sign)
if(CONFIG_OVERRIDE_FRAME_POINTER_DEFAULT)
if(CONFIG_OMIT_FRAME_POINTER)
zephyr_cc_option(-fomit-frame-pointer)
else()
zephyr_cc_option(-fno-omit-frame-pointer)
endif()
endif()
separate_arguments(COMPILER_OPT_AS_LIST UNIX_COMMAND ${CONFIG_COMPILER_OPT})
zephyr_compile_options(${COMPILER_OPT_AS_LIST})
# TODO: Include arch compiler options at this point.
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
zephyr_cc_option(
#FIXME: need to fix all of those
-Wno-sometimes-uninitialized
-Wno-shift-overflow
-Wno-missing-braces
-Wno-self-assign
-Wno-address-of-packed-member
-Wno-unused-function
-Wno-initializer-overrides
-Wno-section
-Wno-unknown-warning-option
-Wno-unused-variable
-Wno-format-invalid-specifier
-Wno-gnu
# comparison of unsigned expression < 0 is always false
-Wno-tautological-compare
)
else() # GCC assumed
zephyr_cc_option(
-Wno-unused-but-set-variable
-fno-reorder-functions
)
if(NOT ${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "xcc")
zephyr_cc_option(-fno-defer-pop)
endif()
endif()
zephyr_cc_option_ifdef(CONFIG_STACK_USAGE -fstack-usage)
zephyr_system_include_directories(${NOSTDINC})
# Force an error when things like SYS_INIT(foo, ...) occur with a missing header.
zephyr_cc_option(-Werror=implicit-int)
# Prohibit void pointer arithmetic. Illegal in C99
zephyr_cc_option(-Wpointer-arith)
# Prohibit date/time macros, which would make the build non-deterministic
# cc-option(-Werror=date-time)
# TODO: Archiver arguments
# ar_option(D)
# Declare MPU userspace dependencies before the linker scripts to make
# sure the order of dependencies are met
if(CONFIG_USERSPACE)
set(APP_SMEM_DEP app_smem_linker)
if(CONFIG_ARM)
set(PRIV_STACK_DEP priv_stacks_prebuilt)
endif()
endif()
set_ifndef(LINKERFLAGPREFIX -Wl)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
${LINKERFLAGPREFIX},-X
${LINKERFLAGPREFIX},-N
)
endif()
zephyr_ld_options(
${LINKERFLAGPREFIX},--gc-sections
${LINKERFLAGPREFIX},--build-id=none
)
get_property(TOPT GLOBAL PROPERTY TOPT)
set_ifndef( TOPT -T)
if(NOT CONFIG_NATIVE_APPLICATION)
# Funny thing is if this is set to =error, some architectures will
# skip this flag even though the compiler flag check passes
# (e.g. ARC and Xtensa). So warning should be the default for now.
#
# Skip this for native application as Zephyr only provides
# additions to the host toolchain linker script. The relocation
# sections (.rel*) requires us to override those provided
# by host toolchain. As we can't account for all possible
# combination of compiler and linker on all machines used
# for development, it is better to turn this off.
#
# CONFIG_LINKER_ORPHAN_SECTION_PLACE is to place the orphan sections
# without any warnings or errors, which is the default behavior.
# So there is no need to explicity set a linker flag.
if(CONFIG_LINKER_ORPHAN_SECTION_WARN)
zephyr_ld_options(
${LINKERFLAGPREFIX},--orphan-handling=warn
)
elseif(CONFIG_LINKER_ORPHAN_SECTION_ERROR)
zephyr_ld_options(
${LINKERFLAGPREFIX},--orphan-handling=error
)
endif()
endif()
if(CONFIG_HAVE_CUSTOM_LINKER_SCRIPT)
set(LINKER_SCRIPT ${APPLICATION_SOURCE_DIR}/${CONFIG_CUSTOM_LINKER_SCRIPT})
if(NOT EXISTS ${LINKER_SCRIPT})
set(LINKER_SCRIPT ${CONFIG_CUSTOM_LINKER_SCRIPT})
assert_exists(CONFIG_CUSTOM_LINKER_SCRIPT)
endif()
else()
# Try a board specific linker file
set(LINKER_SCRIPT ${BOARD_DIR}/linker.ld)
if(NOT EXISTS ${LINKER_SCRIPT})
# If not available, try an SoC specific linker file
set(LINKER_SCRIPT ${SOC_DIR}/${ARCH}/${SOC_PATH}/linker.ld)
endif()
endif()
if(NOT EXISTS ${LINKER_SCRIPT})
message(FATAL_ERROR "Could not find linker script: '${LINKER_SCRIPT}'. Corrupted configuration?")
endif()
# Custom section support in linker scripts requires that the application source
# directory is in the preprocessor search path, in order to find the custom
# linker script fragments.
if(CONFIG_CUSTOM_RODATA_LD OR CONFIG_CUSTOM_RWDATA_LD OR CONFIG_CUSTOM_SECTIONS_LD)
zephyr_include_directories(${APPLICATION_SOURCE_DIR})
endif()
configure_file(version.h.in ${PROJECT_BINARY_DIR}/include/generated/version.h)
function(construct_add_custom_command_for_linker_pass linker_output_name output_variable)
set(extra_dependencies ${ARGN})
set(linker_cmd_file_name ${linker_output_name}.cmd)
if (${linker_output_name} MATCHES "^linker_pass_final$")
set(linker_pass_define -DLINKER_PASS2)
else()
set(linker_pass_define "")
endif()
# Different generators deal with depfiles differently.
if(CMAKE_GENERATOR STREQUAL "Unix Makefiles")
# Note that the IMPLICIT_DEPENDS option is currently supported only
# for Makefile generators and will be ignored by other generators.
set(linker_script_dep IMPLICIT_DEPENDS C ${LINKER_SCRIPT})
elseif(CMAKE_GENERATOR STREQUAL "Ninja")
# Using DEPFILE with other generators than Ninja is an error.
set(linker_script_dep DEPFILE ${PROJECT_BINARY_DIR}/${linker_cmd_file_name}.dep)
else()
# TODO: How would the linker script dependencies work for non-linker
# script generators.
message(STATUS "Warning; this generator is not well supported. The
Linker script may not be regenerated when it should.")
set(linker_script_dep "")
endif()
zephyr_get_include_directories_for_lang(C current_includes)
get_filename_component(base_name ${CMAKE_CURRENT_BINARY_DIR} NAME)
get_property(current_defines GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES)
set(${output_variable}
OUTPUT ${linker_cmd_file_name}
DEPENDS
${LINKER_SCRIPT}
${extra_dependencies}
# NB: 'linker_script_dep' will use a keyword that ends 'DEPENDS'
${linker_script_dep}
COMMAND ${CMAKE_C_COMPILER}
-x assembler-with-cpp
${NOSYSDEF_CFLAG}
-MD -MF ${linker_cmd_file_name}.dep -MT ${base_name}/${linker_cmd_file_name}
${current_includes}
${current_defines}
${linker_pass_define}
-E ${LINKER_SCRIPT}
-P # Prevent generation of debug `#line' directives.
-o ${linker_cmd_file_name}
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
PARENT_SCOPE
)
endfunction()
# Error-out when the deprecated naming convention is found (until
# after 1.14.0 has been released)
foreach(path
${BOARD_DIR}/dts.fixup
${PROJECT_SOURCE_DIR}/soc/${ARCH}/${SOC_PATH}/dts.fixup
${APPLICATION_SOURCE_DIR}/dts.fixup
)
if(EXISTS ${path})
message(FATAL_ERROR
"A deprecated filename has been detected. Porting is required."
"The file '${path}' exists, but it should be named dts_fixup.h instead."
"See https://github.com/zephyrproject-rtos/zephyr/pull/10352 for more details"
)
endif()
endforeach()
set_ifndef( DTS_BOARD_FIXUP_FILE ${BOARD_DIR}/dts_fixup.h)
set_ifndef( DTS_SOC_FIXUP_FILE ${SOC_DIR}/${ARCH}/${SOC_PATH}/dts_fixup.h)
set( DTS_APP_FIXUP_FILE ${APPLICATION_SOURCE_DIR}/dts_fixup.h)
set_ifndef(DTS_CAT_OF_FIXUP_FILES ${ZEPHYR_BINARY_DIR}/include/generated/generated_dts_board_fixups.h)
# Concatenate the fixups into a single header file for easy
# #include'ing
file(WRITE ${DTS_CAT_OF_FIXUP_FILES} "/* May only be included by generated_dts_board.h */\n\n")
foreach(fixup_file
${DTS_BOARD_FIXUP_FILE}
${DTS_SOC_FIXUP_FILE}
${DTS_APP_FIXUP_FILE}
${shield_dts_fixups}
)
if(EXISTS ${fixup_file})
file(READ ${fixup_file} contents)
file(APPEND ${DTS_CAT_OF_FIXUP_FILES} "${contents}")
endif()
endforeach()
# Unfortunately, the order in which CMakeLists.txt code is processed
# matters so we need to be careful about how we order the processing
# of subdirectories. One example is "Compiler flags added late in the
# build are not exported to external build systems #5605"; when we
# integrate with an external build system we read out all compiler
# flags when the external project is created. So an external project
# defined in subsys or ext will not get global flags added by drivers/
# or tests/ as the subdirectories are ordered now.
#
# Another example of when the order matters is the reading and writing
# of global properties such as ZEPHYR_LIBS or
# GENERATED_KERNEL_OBJECT_FILES.
#
# Arch is placed early because it defines important compiler flags
# that must be exported to external build systems defined in
# e.g. subsys/.
add_subdirectory(arch)
add_subdirectory(lib)
# We use include instead of add_subdirectory to avoid creating a new directory scope.
# This is because source file properties are directory scoped, including the GENERATED
# property which is set implicitly for custom command outputs
include(misc/generated/CMakeLists.txt)
if(EXISTS ${SOC_DIR}/${ARCH}/CMakeLists.txt)
add_subdirectory(${SOC_DIR}/${ARCH} soc/${ARCH})
else()
add_subdirectory(${SOC_DIR}/${ARCH}/${SOC_PATH} soc/${ARCH}/${SOC_PATH})
endif()
add_subdirectory(boards)
add_subdirectory(ext)
add_subdirectory(subsys)
set(NRF_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../nrf)
if(EXISTS ${NRF_DIR})
add_subdirectory(${NRF_DIR} ${PROJECT_BINARY_DIR}/nrf)
endif()
add_subdirectory(drivers)
# Add all zephyr modules subdirectories.
if(ZEPHYR_MODULES_NAME)
message("Including module(s): ${ZEPHYR_MODULES_NAME}")
endif()
set(index 0)
foreach(module_name ${ZEPHYR_MODULES_NAME})
list(GET ZEPHYR_MODULES_DIR ${index} module_dir)
math(EXPR index "${index} + 1")
add_subdirectory(${module_dir} ${CMAKE_BINARY_DIR}/${module_name})
endforeach()
set(syscall_macros_h ${ZEPHYR_BINARY_DIR}/include/generated/syscall_macros.h)
add_custom_target(${SYSCALL_MACROS_H_TARGET} DEPENDS ${syscall_macros_h})
add_custom_command( OUTPUT ${syscall_macros_h}
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/gen_syscall_header.py
> ${syscall_macros_h}
DEPENDS ${ZEPHYR_BASE}/scripts/gen_syscall_header.py
)
set(syscall_list_h ${CMAKE_CURRENT_BINARY_DIR}/include/generated/syscall_list.h)
set(syscalls_json ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls.json)
# The syscalls subdirs txt file is constructed by python containing a list of folders to use for
# dependency handling, including empty folders.
# Windows: The list is used to specify DIRECTORY list with CMAKE_CONFIGURE_DEPENDS attribute.
# Other OS: The list will update whenever a file is added/removed/modified and ensure a re-build.
set(syscalls_subdirs_txt ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls_subdirs.txt)
# As syscalls_subdirs_txt is updated whenever a file is modified, this file can not be used for
# monitoring of added / removed folders. A trigger file is thus used for correct dependency
# handling. The trigger file will update when a folder is added / removed.
set(syscalls_subdirs_trigger ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls_subdirs.trigger)
if(NOT (${CMAKE_HOST_SYSTEM_NAME} STREQUAL Windows))
set(syscalls_links --create-links ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls_links)
endif()
# When running CMake it must be ensured that all dependencies are correctly acquired.
execute_process(
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/subfolder_list.py
--directory ${ZEPHYR_BASE}/include # Walk this directory
--out-file ${syscalls_subdirs_txt} # Write file with discovered folder
--trigger ${syscalls_subdirs_trigger} # Trigger file that is used for json generation
${syscalls_links} # If defined, create symlinks for dependencies
)
file(STRINGS ${syscalls_subdirs_txt} PARSE_SYSCALLS_PATHS_DEPENDS)
if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL Windows)
# On windows only adding/removing files or folders will be reflected in depends.
# Hence adding a file requires CMake to re-run to add this file to the file list.
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${PARSE_SYSCALLS_PATHS_DEPENDS})
# Also On Windows each header file must be monitored as file modifications are not reflected
# on directory level.
file(GLOB_RECURSE PARSE_SYSCALLS_HEADER_DEPENDS ${ZEPHYR_BASE}/include/*.h)
else()
# The syscall parsing depends on the folders in order to detect add/removed/modified files.
# When a folder is removed, CMake will try to find a target that creates that dependency.
# This command sets up the target for CMake to find.
# Without this code, CMake will fail with the following error:
# <folder> needed by '<target>', missing and no known rule to make it
# when a folder is removed.
add_custom_command(OUTPUT ${PARSE_SYSCALLS_PATHS_DEPENDS}
COMMAND ${CMAKE_COMMAND} -E echo ""
COMMENT "Preparing syscall dependency handling"
)
add_custom_command(
OUTPUT
${syscalls_subdirs_trigger}
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/subfolder_list.py
--directory ${ZEPHYR_BASE}/include # Walk this directory
--out-file ${syscalls_subdirs_txt} # Write file with discovered folder
--trigger ${syscalls_subdirs_trigger} # Trigger file that is used for json generation
${syscalls_links} # If defined, create symlinks for dependencies
DEPENDS ${PARSE_SYSCALLS_PATHS_DEPENDS}
)
# Ensure subdir file always exists when specifying CMake dependency.
if(NOT EXISTS ${syscalls_subdirs_txt})
file(WRITE ${syscalls_subdirs_txt} "")
endif()
# On other OS'es, modifying a file is reflected on the folder timestamp and hence detected
# when using depend on directory level.
# Thus CMake only needs to re-run when sub-directories are added / removed, which is indicated
# using a trigger file.
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${syscalls_subdirs_txt})
endif()
# SYSCALL_INCLUDE_DIRECTORY will include the directories that needs to be
# searched for syscall declarations if CONFIG_APPLICATION_DEFINED_SYSCALL is set
if(CONFIG_APPLICATION_DEFINED_SYSCALL)
set(SYSCALL_INCLUDE_DIRECTORY --include ${APPLICATION_SOURCE_DIR})
endif()
add_custom_command(
OUTPUT
${syscalls_json}
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/parse_syscalls.py
--include ${ZEPHYR_BASE}/include # Read files from this dir
${SYSCALL_INCLUDE_DIRECTORY}
--json-file ${syscalls_json} # Write this file
DEPENDS ${syscalls_subdirs_trigger} ${PARSE_SYSCALLS_HEADER_DEPENDS}
)
add_custom_target(${SYSCALL_LIST_H_TARGET} DEPENDS ${syscall_list_h})
add_custom_command(OUTPUT include/generated/syscall_dispatch.c ${syscall_list_h}
# Also, some files are written to include/generated/syscalls/
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/gen_syscalls.py
--json-file ${syscalls_json} # Read this file
--base-output include/generated/syscalls # Write to this dir
--syscall-dispatch include/generated/syscall_dispatch.c # Write this file
--syscall-list ${syscall_list_h}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS ${syscalls_json}
)
set(DRV_VALIDATION ${PROJECT_BINARY_DIR}/include/generated/driver-validation.h)
add_custom_command(
OUTPUT ${DRV_VALIDATION}
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/gen_kobject_list.py
--validation-output ${DRV_VALIDATION}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(${DRIVER_VALIDATION_H_TARGET} DEPENDS ${DRV_VALIDATION})
include($ENV{ZEPHYR_BASE}/cmake/kobj.cmake)
gen_kobj(KOBJ_INCLUDE_PATH)
# Generate offsets.c.obj from offsets.c
# Generate offsets.h from offsets.c.obj
set(OFFSETS_LIB offsets)
set(OFFSETS_C_PATH ${ARCH_DIR}/${ARCH}/core/offsets/offsets.c)
set(OFFSETS_H_PATH ${PROJECT_BINARY_DIR}/include/generated/offsets.h)
add_library( ${OFFSETS_LIB} OBJECT ${OFFSETS_C_PATH})
target_link_libraries(${OFFSETS_LIB} zephyr_interface)
add_dependencies( ${OFFSETS_LIB}
${SYSCALL_LIST_H_TARGET}
${SYSCALL_MACROS_H_TARGET}
${DRIVER_VALIDATION_H_TARGET}
${KOBJ_TYPES_H_TARGET}
)
add_custom_command(
OUTPUT ${OFFSETS_H_PATH}
COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/gen_offset_header.py
-i $<TARGET_OBJECTS:${OFFSETS_LIB}>
-o ${OFFSETS_H_PATH}
DEPENDS ${OFFSETS_LIB}
)
add_custom_target(${OFFSETS_H_TARGET} DEPENDS ${OFFSETS_H_PATH})
zephyr_include_directories(${TOOLCHAIN_INCLUDES})
zephyr_get_include_directories_for_lang(C ZEPHYR_INCLUDES)
add_subdirectory(kernel)
# Read list content
get_property(ZEPHYR_LIBS_PROPERTY GLOBAL PROPERTY ZEPHYR_LIBS)
foreach(zephyr_lib ${ZEPHYR_LIBS_PROPERTY})
# TODO: Could this become an INTERFACE property of zephyr_interface?
add_dependencies(${zephyr_lib} ${OFFSETS_H_TARGET})
endforeach()
get_property(OUTPUT_FORMAT GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT)
if (CONFIG_CODE_DATA_RELOCATION)
set(CODE_RELOCATION_DEP code_relocation_source_lib)
endif() # CONFIG_CODE_DATA_RELOCATION
construct_add_custom_command_for_linker_pass(
linker
custom_command
${ALIGN_SIZING_DEP}
${PRIV_STACK_DEP}
${APP_SMEM_DEP}
${CODE_RELOCATION_DEP}
${OFFSETS_H_TARGET}
)
add_custom_command(
${custom_command}
)
add_custom_target(
${LINKER_SCRIPT_TARGET}
DEPENDS
linker.cmd
)
# Give the '${LINKER_SCRIPT_TARGET}' target all of the include directories so
# that cmake can successfully find the linker_script's header
# dependencies.
zephyr_get_include_directories_for_lang(C
ZEPHYR_INCLUDE_DIRS
STRIP_PREFIX # Don't use a -I prefix
)
set_property(TARGET
${LINKER_SCRIPT_TARGET}
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
set(zephyr_lnk
${LINKERFLAGPREFIX},-Map=${PROJECT_BINARY_DIR}/${KERNEL_MAP_NAME}
-u_OffsetAbsSyms
-u_ConfigAbsSyms
${LINKERFLAGPREFIX},--whole-archive
${ZEPHYR_LIBS_PROPERTY}
${LINKERFLAGPREFIX},--no-whole-archive
kernel
$<TARGET_OBJECTS:${OFFSETS_LIB}>
${LIB_INCLUDE_DIR}
-L${PROJECT_BINARY_DIR}
${TOOLCHAIN_LIBS}
)
if(CONFIG_GEN_ISR_TABLES)
if(CONFIG_GEN_SW_ISR_TABLE)
list(APPEND GEN_ISR_TABLE_EXTRA_ARG --sw-isr-table)
endif()
if(CONFIG_GEN_IRQ_VECTOR_TABLE)
list(APPEND GEN_ISR_TABLE_EXTRA_ARG --vector-table)
endif()
# isr_tables.c is generated from ${ZEPHYR_PREBUILT_EXECUTABLE} by
# gen_isr_tables.py
add_custom_command(
OUTPUT isr_tables.c
COMMAND ${CMAKE_OBJCOPY}
-I ${OUTPUT_FORMAT}
-O binary
--only-section=.intList
$<TARGET_FILE:${ZEPHYR_PREBUILT_EXECUTABLE}>
isrList.bin
COMMAND ${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/arch/common/gen_isr_tables.py
--output-source isr_tables.c
--kernel $<TARGET_FILE:${ZEPHYR_PREBUILT_EXECUTABLE}>
--intlist isrList.bin
$<$<BOOL:${CONFIG_BIG_ENDIAN}>:--big-endian>
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--debug>
${GEN_ISR_TABLE_EXTRA_ARG}
DEPENDS ${ZEPHYR_PREBUILT_EXECUTABLE}
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_SOURCE_FILES isr_tables.c)
endif()
if(CONFIG_CODE_DATA_RELOCATION)
set(MEM_RELOCATAION_LD "${PROJECT_BINARY_DIR}/include/generated/linker_relocate.ld")
set(MEM_RELOCATAION_CODE "${PROJECT_BINARY_DIR}/code_relocation.c")
add_custom_command(
OUTPUT ${MEM_RELOCATAION_CODE} ${MEM_RELOCATAION_LD}
COMMAND
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/gen_relocate_app.py
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
-d ${APPLICATION_BINARY_DIR}
-i '$<TARGET_PROPERTY:code_data_relocation_target,COMPILE_DEFINITIONS>'
-o ${MEM_RELOCATAION_LD}
-c ${MEM_RELOCATAION_CODE}
DEPENDS app kernel ${ZEPHYR_LIBS_PROPERTY}
)
add_library(code_relocation_source_lib STATIC ${MEM_RELOCATAION_CODE})
target_link_libraries(code_relocation_source_lib zephyr_interface)
endif()
if(CONFIG_USERSPACE)
zephyr_get_compile_options_for_lang_as_string(C compiler_flags_priv)
string(REPLACE "-ftest-coverage" "" NO_COVERAGE_FLAGS "${compiler_flags_priv}")
string(REPLACE "-fprofile-arcs" "" NO_COVERAGE_FLAGS "${NO_COVERAGE_FLAGS}")
get_property(include_dir_in_interface TARGET zephyr_interface
PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
get_property(sys_include_dir_in_interface TARGET zephyr_interface
PROPERTY INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
get_property(compile_definitions_interface TARGET zephyr_interface
PROPERTY INTERFACE_COMPILE_DEFINITIONS)
set(complete_include_dirs ${include_dir_in_interface} ${sys_include_dir_in_interface})
endif()
if(CONFIG_ARM AND CONFIG_USERSPACE)
set(GEN_PRIV_STACKS $ENV{ZEPHYR_BASE}/scripts/gen_priv_stacks.py)
set(PROCESS_PRIV_STACKS_GPERF $ENV{ZEPHYR_BASE}/scripts/process_gperf.py)
set(PRIV_STACKS priv_stacks_hash.gperf)
set(PRIV_STACKS_OUTPUT_SRC_PRE priv_stacks_hash_preprocessed.c)
set(PRIV_STACKS_OUTPUT_SRC priv_stacks_hash.c)
set(PRIV_STACKS_OUTPUT_OBJ priv_stacks_hash.c.obj)
set(PRIV_STACKS_OUTPUT_OBJ_RENAMED priv_stacks_hash_renamed.o)
# Essentially what we are doing here is extracting some information
# out of the nearly finished elf file, generating the source code
# for a hash table based on that information, and then compiling and
# linking the hash table back into a now even more nearly finished
# elf file.
# Use the script GEN_PRIV_STACKS to scan the kernel binary's
# (${ZEPHYR_PREBUILT_EXECUTABLE}) DWARF information to produce a table of kernel
# objects (PRIV_STACKS) which we will then pass to gperf
add_custom_command(
OUTPUT ${PRIV_STACKS}
COMMAND
${PYTHON_EXECUTABLE}
${GEN_PRIV_STACKS}
--kernel $<TARGET_FILE:priv_stacks_prebuilt>
--output ${PRIV_STACKS}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_prebuilt
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS})
# Use gperf to generate C code (PRIV_STACKS_OUTPUT_SRC_PRE) which implements a
# perfect hashtable based on PRIV_STACKS
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC_PRE}
COMMAND
${GPERF} -C
--output-file ${PRIV_STACKS_OUTPUT_SRC_PRE}
${PRIV_STACKS}
DEPENDS priv_stacks ${PRIV_STACKS}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src_pre DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC_PRE})
# For our purposes the code/data generated by gperf is not optimal.
#
# The script PROCESS_GPERF creates a new c file OUTPUT_SRC based on
# OUTPUT_SRC_PRE to greatly reduce the amount of code/data generated
# since we know we are always working with pointer values
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC}
COMMAND
${PYTHON_EXECUTABLE}
${PROCESS_PRIV_STACKS_GPERF}
-i ${PRIV_STACKS_OUTPUT_SRC_PRE}
-o ${PRIV_STACKS_OUTPUT_SRC}
-p "struct _k_priv_stack_map"
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_output_src_pre ${PRIV_STACKS_OUTPUT_SRC_PRE}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC})
set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC}
PROPERTIES COMPILE_DEFINITIONS "${compile_definitions_interface}")
# always compile priv_stacks_hash.c at optimization -Os
set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC}
PROPERTIES COMPILE_FLAGS
"${NO_COVERAGE_FLAGS} -Os -fno-function-sections -fno-data-sections ")
# We need precise control of where generated text/data ends up in the final
# kernel image. Disable function/data sections and use objcopy to move
# generated data into special section names
add_library(priv_stacks_output_lib STATIC
${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC}
)
# Turn off -ffunction-sections, etc.
# NB: Using a library instead of target_compile_options(priv_stacks_output_lib
# [...]) because a library's options have precedence
add_library(priv_stacks_output_lib_interface INTERFACE)
foreach(incl ${complete_include_dirs})
target_include_directories(priv_stacks_output_lib_interface INTERFACE ${incl})
endforeach()
target_link_libraries(priv_stacks_output_lib priv_stacks_output_lib_interface)
set(PRIV_STACKS_OUTPUT_OBJ_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/priv_stacks_output_lib.dir/${PRIV_STACKS_OUTPUT_OBJ})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
COMMAND
${CMAKE_OBJCOPY}
--rename-section .bss=.priv_stacks.noinit
--rename-section .data=.priv_stacks.data
--rename-section .text=.priv_stacks.text
--rename-section .rodata=.priv_stacks.rodata
${PRIV_STACKS_OUTPUT_OBJ_PATH}
${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
DEPENDS priv_stacks_output_lib
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_obj_renamed DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED})
add_library(priv_stacks_output_obj_renamed_lib STATIC IMPORTED GLOBAL)
set_property(
TARGET priv_stacks_output_obj_renamed_lib
PROPERTY
IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
)
add_dependencies(
priv_stacks_output_obj_renamed_lib
priv_stacks_output_obj_renamed
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_OBJECT_FILES priv_stacks_output_obj_renamed_lib)