按着官方给出的文档步奏发现编译的时候会出现错误，导致luci2编译不过,具体原因是出在cmake.mk,
CMAKE_RANLIB:=$(call cmake_tool,$(TARGET_RANLIB))
CMAKE_FIND_ROOT_PATH:=$(STAGING_DIR);$(TOOLCHAIN_DIR)$(if $(CONFIG_EXTERNAL_TOOLCHAIN),;$(CONFIG_TOOLCHAIN_ROOT))
define Build/Configure/Default
(cd $(PKG_BUILD_DIR); \
-DCMAKE_NM="$(CMAKE_NM)" \
-DCMAKE_RANLIB="$(CMAKE_RANLIB)" \
-DCMAKE_FIND_ROOT_PATH="$(STAGING_DIR);$(TOOLCHAIN_DIR)" \-DCMAKE_FIND_ROOT_PATH="$(CMAKE_FIND_ROOT_PATH)" \
-DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=BOTH \
-DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY \
