我知道两种打印目标属性的方法。
1.对于特定属性，可以使用CMakePrintHelpers.cmake中的cmake_print_properties。
cmake_print_properties(TARGETS Boost::headers PROPERTIES <property1> <property2> ...)
1.要打印目标的所有已定义属性，可以使用此技巧。

• 打印目标属性 *

# Get all properties that cmake supports

execute_process(COMMAND cmake --help-property-list OUTPUT_VARIABLE CMAKE_PROPERTY_LIST)

# Convert command output into a CMake list

STRING(REGEX REPLACE ";" "\\\\;" CMAKE_PROPERTY_LIST "${CMAKE_PROPERTY_LIST}")
STRING(REGEX REPLACE "\n" ";" CMAKE_PROPERTY_LIST "${CMAKE_PROPERTY_LIST}")

# Fix https://stackoverflow.com/questions/32197663/how-can-i-remove-the-the-location-property-may-not-be-read-from-target-error-i

list(FILTER CMAKE_PROPERTY_LIST EXCLUDE REGEX "^LOCATION$|^LOCATION_|_LOCATION$")

# For some reason, "TYPE" shows up twice - others might too?

list(REMOVE_DUPLICATES CMAKE_PROPERTY_LIST)

# build whitelist by filtering down from CMAKE_PROPERTY_LIST in case cmake is

# a different version, and one of our hardcoded whitelisted properties

# doesn't exist!

unset(CMAKE_WHITELISTED_PROPERTY_LIST)

foreach(prop ${CMAKE_PROPERTY_LIST})
    if(prop MATCHES "^(INTERFACE|[_a-z]|IMPORTED_LIBNAME_|MAP_IMPORTED_CONFIG_)|^(COMPATIBLE_INTERFACE_(BOOL|NUMBER_MAX|NUMBER_MIN|STRING)|EXPORT_NAME|IMPORTED(_GLOBAL|_CONFIGURATIONS|_LIBNAME)?|NAME|TYPE|NO_SYSTEM_FROM_IMPORTED)$")
        list(APPEND CMAKE_WHITELISTED_PROPERTY_LIST ${prop})
    endif()
endforeach(prop)

function(print_target_properties tgt)
    if(NOT TARGET ${tgt})
        message("There is no target named '${tgt}'")
        return()
    endif()

    get_target_property(target_type ${tgt} TYPE)
    if(target_type STREQUAL "INTERFACE_LIBRARY")
        set(PROP_LIST ${CMAKE_WHITELISTED_PROPERTY_LIST})
    else()
        set(PROP_LIST ${CMAKE_PROPERTY_LIST})
    endif()

    foreach (prop ${PROP_LIST})
        string(REPLACE "<CONFIG>" "${CMAKE_BUILD_TYPE}" prop ${prop})
        # message ("Checking ${prop}")
        get_property(propval TARGET ${tgt} PROPERTY ${prop} SET)
        if (propval)
            get_target_property(propval ${tgt} ${prop})
            message ("${tgt} ${prop} = ${propval}")
        endif()
    endforeach(prop)
endfunction(print_target_properties)

然后你可以这样调用这个函数：
print_target_properties(Boost::headers)