esp-idf/tools/cmake/idf.cmake

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CMake
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get_property(__idf_env_set GLOBAL PROPERTY __IDF_ENV_SET)
if(NOT __idf_env_set)
# Infer an IDF_PATH relative to the tools/cmake directory
get_filename_component(_idf_path "${CMAKE_CURRENT_LIST_DIR}/../.." REALPATH)
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file(TO_CMAKE_PATH "${_idf_path}" _idf_path)
# Get the path set in environment
set(idf_path $ENV{IDF_PATH})
# Environment IDF_PATH should match the inferred IDF_PATH. If not, warn the user.
# (Note: REALPATH is needed in both above steps to account for case on case
# insensitive filesystems, or relative paths)
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if(idf_path)
get_filename_component(idf_path "${idf_path}" REALPATH)
file(TO_CMAKE_PATH "${idf_path}" idf_path)
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if(NOT idf_path STREQUAL _idf_path)
message(WARNING "IDF_PATH environment variable is different from inferred IDF_PATH.
Check if your project's top-level CMakeLists.txt includes the right
CMake files. Environment IDF_PATH will be used for the build:
${idf_path}")
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endif()
else()
message(WARNING "IDF_PATH environment variable not found. Setting IDF_PATH to '${_idf_path}'.")
set(idf_path ${_idf_path})
set(ENV{IDF_PATH} ${_idf_path})
endif()
# Include other CMake modules required
set(CMAKE_MODULE_PATH
"${idf_path}/tools/cmake"
"${idf_path}/tools/cmake/third_party"
${CMAKE_MODULE_PATH})
include(build)
set(IDF_PATH ${idf_path})
include(GetGitRevisionDescription)
include(git_submodules)
include(crosstool_version_check)
include(kconfig)
include(component)
include(utilities)
include(depgraph)
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include(targets)
include(ldgen)
include(dfu)
include(uf2)
include(version)
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__build_init("${idf_path}")
# Check if IDF_ENV_FPGA environment is set
set(env_idf_env_fpga $ENV{IDF_ENV_FPGA})
if(${env_idf_env_fpga})
idf_build_set_property(__IDF_ENV_FPGA "y")
message(NOTICE "IDF_ENV_FPGA is set, building for FPGA environment")
endif()
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set_property(GLOBAL PROPERTY __IDF_ENV_SET 1)
endif()