blob: e9ac00ff96ae1e8b5a190db5eec8b6b93a899c10 [file] [log] [blame]
# SPDX-License-Identifier: Apache-2.0
set_property(TARGET linker PROPERTY devices_start_symbol "__device_start")
find_program(CMAKE_LINKER ld.lld )
set_ifndef(LINKERFLAGPREFIX -Wl)
# Run $LINKER_SCRIPT file through the C preprocessor, producing ${linker_script_gen}
# NOTE: ${linker_script_gen} will be produced at build-time; not at configure-time
macro(configure_linker_script linker_script_gen linker_pass_define)
set(extra_dependencies ${ARGN})
set(template_script_defines ${linker_pass_define})
list(TRANSFORM template_script_defines PREPEND "-D")
# 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_script_gen}.dep)
else()
# TODO: How would the linker script dependencies work for non-linker
# script generators.
message(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)
add_custom_command(
OUTPUT ${linker_script_gen}
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_script_gen}.dep -MT ${base_name}/${linker_script_gen}
-D_LINKER
-D_ASMLANGUAGE
${current_includes}
${current_defines}
${template_script_defines}
-E ${LINKER_SCRIPT}
-P # Prevent generation of debug `#line' directives.
-o ${linker_script_gen}
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
COMMAND_EXPAND_LISTS
)
endmacro()
# Force symbols to be entered in the output file as undefined symbols
function(toolchain_ld_force_undefined_symbols)
foreach(symbol ${ARGN})
zephyr_link_libraries(${LINKERFLAGPREFIX},-u,${symbol})
endforeach()
endfunction()
# Link a target to given libraries with toolchain-specific argument order
#
# Usage:
# toolchain_ld_link_elf(
# TARGET_ELF <target_elf>
# OUTPUT_MAP <output_map_file_of_target>
# LIBRARIES_PRE_SCRIPT [libraries_pre_script]
# LINKER_SCRIPT <linker_script>
# LIBRARIES_POST_SCRIPT [libraries_post_script]
# DEPENDENCIES [dependencies]
# )
function(toolchain_ld_link_elf)
cmake_parse_arguments(
TOOLCHAIN_LD_LINK_ELF # prefix of output variables
"" # list of names of the boolean arguments
"TARGET_ELF;OUTPUT_MAP;LINKER_SCRIPT" # list of names of scalar arguments
"LIBRARIES_PRE_SCRIPT;LIBRARIES_POST_SCRIPT;DEPENDENCIES" # list of names of list arguments
${ARGN} # input args to parse
)
target_link_libraries(
${TOOLCHAIN_LD_LINK_ELF_TARGET_ELF}
${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_PRE_SCRIPT}
${TOPT}
${TOOLCHAIN_LD_LINK_ELF_LINKER_SCRIPT}
${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_POST_SCRIPT}
${LINKERFLAGPREFIX},-Map=${TOOLCHAIN_LD_LINK_ELF_OUTPUT_MAP}
${LINKERFLAGPREFIX},--whole-archive
${ZEPHYR_LIBS_PROPERTY}
${LINKERFLAGPREFIX},--no-whole-archive
kernel
$<TARGET_OBJECTS:${OFFSETS_LIB}>
${LIB_INCLUDE_DIR}
-L${PROJECT_BINARY_DIR}
${TOOLCHAIN_LIBS}
${TOOLCHAIN_LD_LINK_ELF_DEPENDENCIES}
)
endfunction(toolchain_ld_link_elf)
# Load toolchain_ld-family macros
include(${ZEPHYR_BASE}/cmake/linker/ld/target_base.cmake)
include(${ZEPHYR_BASE}/cmake/linker/${LINKER}/target_baremetal.cmake)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_cpp.cmake)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_relocation.cmake)
include(${ZEPHYR_BASE}/cmake/linker/ld/target_configure.cmake)