blob: 4e062b2b97069e042c535310411bcbf7aaf9e20e [file] [log] [blame]
# SPDX-License-Identifier: Apache-2.0
#
# Copyright (c) 2021, 2023 Nordic Semiconductor ASA
include_guard(GLOBAL)
include(extensions)
# Finalize the value of DTS_ROOT, so we know where all our
# DTS files, bindings, and vendor prefixes are.
#
# Outcome:
# The following variables will be defined when this CMake module completes:
#
# - CMAKE_DTS_PREPROCESSOR: the path to the preprocessor to use
# for devicetree files
# - DTS_ROOT: a deduplicated list of places where devicetree
# implementation files (like bindings, vendor prefixes, etc.) are
# found
# - DTS_ROOT_SYSTEM_INCLUDE_DIRS: set to "PATH1 PATH2 ...",
# with one path per potential location where C preprocessor #includes
# may be found for devicetree files
#
# Required variables:
# None.
#
# Optional variables:
# - APPLICATION_SOURCE_DIR: path to app (added to DTS_ROOT)
# - BOARD_DIR: directory containing the board definition (added to DTS_ROOT)
# - DTS_ROOT: initial contents may be populated here
# - ZEPHYR_BASE: path to zephyr repository (added to DTS_ROOT)
# - SHIELD_DIRS: paths to shield definitions (added to DTS_ROOT)
# Using a function avoids polluting the parent scope unnecessarily.
function(pre_dt_module_run)
# Convert relative paths to absolute paths relative to the application
# source directory.
zephyr_file(APPLICATION_ROOT DTS_ROOT)
# DTS_ROOT always includes the application directory, the board
# directory, shield directories, and ZEPHYR_BASE.
list(APPEND
DTS_ROOT
${APPLICATION_SOURCE_DIR}
${BOARD_DIR}
${SHIELD_DIRS}
${ZEPHYR_BASE}
)
# Convert the directories in DTS_ROOT to absolute paths without
# symlinks.
#
# DTS directories can come from multiple places. Some places, like a
# user's CMakeLists.txt can preserve symbolic links. Others, like
# scripts/zephyr_module.py --settings-out resolve them.
unset(real_dts_root)
foreach(dts_dir ${DTS_ROOT})
file(REAL_PATH ${dts_dir} real_dts_dir)
list(APPEND real_dts_root ${real_dts_dir})
endforeach()
set(DTS_ROOT ${real_dts_root})
# Finalize DTS_ROOT.
list(REMOVE_DUPLICATES DTS_ROOT)
if(HWMv1)
set(arch_include dts/${ARCH})
else()
foreach(arch ${ARCH_V2_NAME_LIST})
list(APPEND arch_include dts/${arch})
endforeach()
endif()
# Finalize DTS_ROOT_SYSTEM_INCLUDE_DIRS.
set(DTS_ROOT_SYSTEM_INCLUDE_DIRS)
foreach(dts_root ${DTS_ROOT})
foreach(dts_root_path
include
include/zephyr
dts/common
${arch_include}
dts
)
get_filename_component(full_path ${dts_root}/${dts_root_path} REALPATH)
if(EXISTS ${full_path})
list(APPEND DTS_ROOT_SYSTEM_INCLUDE_DIRS ${full_path})
endif()
endforeach()
endforeach()
# Set output variables.
set(DTS_ROOT ${DTS_ROOT} PARENT_SCOPE)
set(DTS_ROOT_SYSTEM_INCLUDE_DIRS ${DTS_ROOT_SYSTEM_INCLUDE_DIRS} PARENT_SCOPE)
endfunction()
pre_dt_module_run()