esp-idf/tools/cmake/targets.cmake

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CMake
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include(component_utils)
macro(idf_set_target)
# Input is IDF_TARGET environement variable
set(env_idf_target $ENV{IDF_TARGET})
if(NOT env_idf_target)
# IDF_TARGET not set in environment, see if it is set in cache
if(IDF_TARGET)
set(env_idf_target ${IDF_TARGET})
else()
set(env_idf_target esp32)
message(STATUS "IDF_TARGET not set, using default target: ${env_idf_target}")
endif()
else()
# IDF_TARGET set both in environment and in cache, must be the same
if(NOT ${IDF_TARGET} STREQUAL ${env_idf_target})
message(FATAL_ERROR "IDF_TARGET in CMake cache does not match "
"IDF_TARGET environment variable. To change the target, clear "
"the build directory and sdkconfig file, and build the project again")
endif()
endif()
# IDF_TARGET will be used by Kconfig, make sure it is set
set(ENV{IDF_TARGET} ${env_idf_target})
# Finally, set IDF_TARGET in cache
set(IDF_TARGET ${env_idf_target} CACHE STRING "IDF Build Target")
message(STATUS "Building for target ${IDF_TARGET}")
endmacro()
macro(idf_check_config_target)
if(NOT ${IDF_TARGET} STREQUAL ${CONFIG_IDF_TARGET})
message(FATAL_ERROR "CONFIG_IDF_TARGET in sdkconfig does not match "
"IDF_TARGET environement variable. To change the target, delete "
"sdkconfig file and build the project again.")
endif()
endmacro()
macro(idf_set_toolchain)
# First try to load the toolchain file from the tools/cmake/ directory of IDF
set(toolchain_file_global $ENV{IDF_PATH}/tools/cmake/toolchain-${IDF_TARGET}.cmake)
if(EXISTS ${toolchain_file_global})
set(CMAKE_TOOLCHAIN_FILE ${toolchain_file_global})
else()
# Try to load the toolchain file from the directory of ${IDF_TARGET} component
components_find_all("${IDF_COMPONENT_DIRS}" ALL_COMPONENT_PATHS ALL_COMPONENTS ALL_TEST_COMPONENTS)
find_component_path(${IDF_TARGET} "${ALL_COMPONENTS}" "${ALL_COMPONENT_PATHS}" target_component_path)
set(toolchain_file_component ${target_component_path}/toolchain-${IDF_TARGET}.cmake)
if(EXISTS ${toolchain_file_component})
set(CMAKE_TOOLCHAIN_FILE ${toolchain_file_component})
else()
message(FATAL_ERROR "Toolchain file toolchain-${IDF_TARGET}.cmake not found,"
"checked ${toolchain_file_global} and ${toolchain_file_component}")
endif()
endif()
endmacro()