| get_filename_component(_IMPORT_PREFIX "${PROJECT_SOURCE_DIR}/3rdparty/cppcodec/" ABSOLUTE)macro(set_and_check _var _file)  set(${_var} "${_file}")  if(NOT EXISTS "${_file}")    message(FATAL_ERROR "File or directory ${_file} referenced by variable ${_var} does not exist !")  endif()endmacro()set_and_check(CPPCODEC_INCLUDE_DIR ${_IMPORT_PREFIX})set(CPPCODEC_INCLUDE_DIRS "${CPPCODEC_INCLUDE_DIR}")add_library(cppcodec INTERFACE)target_include_directories(cppcodec INTERFACE "$<BUILD_INTERFACE:${CPPCODEC_INCLUDE_DIR}>")
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