Makefile:635: *** missing separator (did you mean TAB instead of 8 spaces?). Stop -

i'm trying create package, compile , install in openwrt. however, have trouble getting past error:

makefile:635: *** missing separator (did mean tab instead of 8 spaces?).  stop. 

here's line 635 in makefile:

define package/qt4-drivers-gfx-vnc/install $(install_dir) \ $(1)/usr/lib/qt/plugins/gfxdrivers $(cp) \ $(pkg_install_dir)/usr/lib/qt/plugins/gfxdrivers/libqgfxvnc.so \ $(1)/usr/lib/qt/plugins/gfxdrivers/ endef  $(eval $(call buildpackage,qt4)) /*this line 635*/ $(eval $(call buildpackage,qt4-gui)) $(eval $(call buildpackage,qt4-demos)) $(eval $(call buildpackage,qt4-examples)) $(eval $(call buildpackage,qt4-network)) $(eval $(call buildpackage,qt4-sqlite)) $(eval $(call buildpackage,qt4-mysql)) $(eval $(call buildpackage,qt4-openssl))