root@oak:/home/s# make
arm-linux-gnueabi-gcc -o hello hello.o `arm-linux-gnueabi-pkg-config --libs ewl`
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_state_is_iconic'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_input_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_state_is_normal'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_position'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_set_flag_none'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_us_position'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_icon_mask_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_state_is_withdrawn'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_set_urgent'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_x_urgency_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_state_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_icon_pixmap_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_window_group_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_win_gravity'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_base_size'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_resize_inc'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_wm_hints_is_icon_window_hint'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_max_size'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_aspect'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_is_p_min_size'
/usr/arm-linux-gnueabi/lib/libecore_x.so.0: undefined reference to `xcb_size_hints_set_flag_us_position'
collect2: ld returned 1 exit status
make: *** [hello] Error 1