2024-08-09 08:45:58 -04:00
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# Utilities for remapping path prefixes
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#
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# __generate_prefix_map
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# Prepares the list of compiler flags for remapping various paths
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# to fixed names. This is used when reproducible builds are required.
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# This function also creates a gdbinit file for the debugger to
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# remap the substituted paths back to the real paths in the filesystem.
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function(__generate_prefix_map compile_options_var)
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set(compile_options)
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idf_build_get_property(idf_path IDF_PATH)
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idf_build_get_property(build_components BUILD_COMPONENTS)
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if(CONFIG_COMPILER_HIDE_PATHS_MACROS)
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list(APPEND compile_options "-fmacro-prefix-map=${CMAKE_SOURCE_DIR}=.")
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list(APPEND compile_options "-fmacro-prefix-map=${idf_path}=/IDF")
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endif()
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if(CONFIG_APP_REPRODUCIBLE_BUILD)
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list(APPEND compile_options "-fdebug-prefix-map=${idf_path}=/IDF")
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list(APPEND compile_options "-fdebug-prefix-map=${PROJECT_DIR}=/IDF_PROJECT")
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list(APPEND compile_options "-fdebug-prefix-map=${BUILD_DIR}=/IDF_BUILD")
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# Generate mapping for component paths
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set(gdbinit_file_lines)
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foreach(component_name ${build_components})
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idf_component_get_property(component_dir ${component_name} COMPONENT_DIR)
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string(TOUPPER ${component_name} component_name_uppercase)
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set(substituted_path "/COMPONENT_${component_name_uppercase}_DIR")
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list(APPEND compile_options "-fdebug-prefix-map=${component_dir}=${substituted_path}")
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string(APPEND gdbinit_file_lines "set substitute-path ${substituted_path} ${component_dir}\n")
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endforeach()
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2024-08-12 07:28:15 -04:00
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# Mapping for toolchain path
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execute_process(
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COMMAND ${CMAKE_C_COMPILER} -print-sysroot
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OUTPUT_VARIABLE compiler_sysroot
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)
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if(compiler_sysroot STREQUAL "")
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message(FATAL_ERROR "Failed to determine toolchain sysroot")
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endif()
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string(STRIP "${compiler_sysroot}" compiler_sysroot)
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get_filename_component(compiler_sysroot "${compiler_sysroot}/.." REALPATH)
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list(APPEND compile_options "-fdebug-prefix-map=${compiler_sysroot}=/TOOLCHAIN")
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string(APPEND gdbinit_file_lines "set substitute-path /TOOLCHAIN ${compiler_sysroot}\n")
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2024-08-09 08:45:58 -04:00
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# Write the final gdbinit file
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set(gdbinit_path "${BUILD_DIR}/prefix_map_gdbinit")
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file(WRITE "${gdbinit_path}" "${gdbinit_file_lines}")
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idf_build_set_property(DEBUG_PREFIX_MAP_GDBINIT "${gdbinit_path}")
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endif()
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set(${compile_options_var} ${compile_options} PARENT_SCOPE)
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endfunction()
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