if(ZLIB_BUILD_SHARED)
    target_sources(zlib
        PRIVATE
            infback9.c
            inftree9.c
            infback9.h
            inffix9.h
            inftree9.h)
endif(ZLIB_BUILD_SHARED)

if(ZLIB_BUILD_STATIC)
    target_sources(zlibstatic
        PRIVATE
            infback9.c
            inftree9.c
            infback9.h
            inffix9.h
            inftree9.h)
endif(ZLIB_BUILD_STATIC)