addon_config.mk equivalent codes?

I can't find this documented anywhere.

What are the Addon_config equivalents for the following Xcode commands:
LIBRARY_SEARCH_PATHS (Library Search Paths)
HEADER_SEARCH_PATHS (Header Search Paths)

Spec:

# dependencies with other addons, a list of them separated by spaces 
    # or use += in several lines
    # ADDON_DEPENDENCIES =

    # include search paths, this will be usually parsed from the file system
    # but if the addon or addon libraries need special search paths they can be
    # specified here separated by spaces or one per line using +=
    #ADDON_INCLUDES = 

    # any special flag that should be passed to the compiler when using this
    # addon
    # ADDON_CFLAGS =

    # any special flag that should be passed to the linker when using this
    # addon, also used for system libraries with -lname
    # ADDON_LDFLAGS =

    # linux only, any library that should be included in the project using
    # pkg-config
    # ADDON_PKG_CONFIG_LIBRARIES =

    # osx/iOS only, any framework that should be included in the project
    # ADDON_FRAMEWORKS =

    # source files, these will be usually parsed from the file system looking
    # in the src folders in libs and the root of the addon. if your addon needs
    # to include files in different places or a different set of files per platform
    # they can be specified here
    # ADDON_SOURCES =

    # some addons need resources to be copied to the bin/data folder of the project
    # specify here any files that need to be copied, you can use wildcards like * and ?
    # ADDON_DATA = 

    # when parsing the file system looking for libraries exclude this for all or
    # a specific platform
    # ADDON_LIBS_EXCLUDE =

         # binary libraries, these will be usually parsed from the file system but some 
    # libraries need to passed to the linker in a specific order 
    ADDON_LIBS =

Start with the ADDON_INCLUDES, ADDON_CFLAGS, and ADDON_LDFLAGS entries shown in the addon_config.mk specification, then compare them with Xcode's LIBRARY_SEARCH_PATHS and HEADER_SEARCH_PATHS. Document the corresponding settings and their intended use in the addon_config.mk documentation.