esp-idf/components/ulp/cmake/CMakeLists.txt

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cmake_minimum_required(VERSION 3.5)
include(${IDF_PATH}/tools/cmake/utilities.cmake)
project(${ULP_APP_NAME} ASM C)
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set(version_pattern "[a-z0-9\.-]+")
# Check assembler version
execute_process(
COMMAND ${CMAKE_ASM_COMPILER} --version
OUTPUT_VARIABLE as_output
ERROR_QUIET)
string(REGEX MATCH "GNU assembler \\(GNU Binutils\\) (${version_pattern})" as_version ${as_output})
set(as_version ${CMAKE_MATCH_1})
message(STATUS "Building ULP app ${ULP_APP_NAME}")
message(STATUS "ULP assembler version: ${as_version}")
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# Check the supported assembler version
file(STRINGS ${IDF_PATH}/components/ulp/toolchain_ulp_version.mk version_file_contents)
string(REGEX MATCH "SUPPORTED_ULP_ASSEMBLER_VERSION = (${version_pattern})" as_supported_version ${version_file_contents})
set(as_supported_version ${CMAKE_MATCH_1})
if(NOT as_version STREQUAL as_supported_version)
message(WARNING "WARNING: ULP assembler version ${as_version} is not supported. Expected to see version: \
${as_supported_version}. Please check ESP-IDF ULP setup instructions and update \
the toolchain, or proceed at your own risk.")
endif()
set(ULP_MAP_GEN ${PYTHON} ${IDF_PATH}/components/ulp/esp32ulp_mapgen.py)
set(ULP_LD_TEMPLATE ${IDF_PATH}/components/ulp/ld/esp32.ulp.ld)
get_filename_component(sdkconfig_dir ${SDKCONFIG} DIRECTORY)
foreach(include ${COMPONENT_INCLUDES})
list(APPEND component_includes -I${include})
endforeach()
list(APPEND ULP_PREPROCESSOR_ARGS ${component_includes})
list(APPEND ULP_PREPROCESSOR_ARGS -I${COMPONENT_PATH})
list(APPEND ULP_PREPROCESSOR_ARGS -I${sdkconfig_dir})
include_directories(${component_includes})
list(APPEND ULP_PREPROCESSOR_ARGS -D__ASSEMBLER__)
# Preprocess linker script, pre-linking
get_filename_component(ULP_LD_SCRIPT ${ULP_LD_TEMPLATE} NAME)
add_custom_command( OUTPUT ${ULP_LD_SCRIPT}
COMMAND ${CMAKE_C_COMPILER} -E -P -xc -o ${ULP_LD_SCRIPT} ${ULP_PREPROCESSOR_ARGS} ${ULP_LD_TEMPLATE}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS ${ULP_LD_TEMPLATE}
VERBATIM)
add_custom_target(${ULP_APP_NAME}_ld_script
DEPENDS ${ULP_LD_SCRIPT}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
foreach(ulp_s_source ${ULP_S_SOURCES})
get_filename_component(ulp_ps_source ${ulp_s_source} NAME_WE)
set(ulp_ps_output ${CMAKE_CURRENT_BINARY_DIR}/${ulp_ps_source}.ulp.S)
# Generate preprocessed assembly files.
add_custom_command( OUTPUT ${ulp_ps_output}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMAND ${CMAKE_C_COMPILER} -E -P -xc ${ULP_PREPROCESSOR_ARGS} -o ${ulp_ps_output} ${ulp_s_source}
DEPENDS ${ulp_s_source} ${ULP_LD_SCRIPT}
VERBATIM)
# During assembly file compilation, output listing files as well.
set_source_files_properties(${ulp_ps_output}
PROPERTIES COMPILE_FLAGS
"-al=${CMAKE_CURRENT_BINARY_DIR}/${ulp_ps_source}.lst")
list(APPEND ULP_PS_SOURCES ${ulp_ps_output})
endforeach()
# Create an executable
add_executable(${ULP_APP_NAME} ${ULP_PS_SOURCES})
# Dump the list of global symbols in a convenient format
add_custom_command( OUTPUT ${ULP_APP_NAME}.sym
COMMAND ${CMAKE_NM} -g -f posix $<TARGET_FILE:${ULP_APP_NAME}> > ${ULP_APP_NAME}.sym
DEPENDS ${ULP_APP_NAME}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
# Dump the binary for inclusion into the project
add_custom_command( OUTPUT ${ULP_APP_NAME}.bin
COMMAND ${CMAKE_OBJCOPY} -O binary $<TARGET_FILE:${ULP_APP_NAME}> ${ULP_APP_NAME}.bin
DEPENDS ${ULP_APP_NAME}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
add_custom_command( OUTPUT ${ULP_APP_NAME}.ld ${ULP_APP_NAME}.h
COMMAND ${ULP_MAP_GEN} -s ${ULP_APP_NAME}.sym -o ${ULP_APP_NAME}
DEPENDS ${ULP_APP_NAME}.sym
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
# Building the component separately from the project should result in
# ULP files being built.
add_custom_target(build
DEPENDS ${ULP_APP_NAME} ${ULP_APP_NAME}.bin ${ULP_APP_NAME}.sym
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${CMAKE_CURRENT_BINARY_DIR}/${ULP_APP_NAME}.ld
${CMAKE_CURRENT_BINARY_DIR}/${ULP_APP_NAME}.h
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(${ULP_APP_NAME} -T${CMAKE_CURRENT_BINARY_DIR}/${ULP_LD_SCRIPT} -Map=${CMAKE_CURRENT_BINARY_DIR}/${ULP_APP_NAME}.map)