mplayer source compilation error in sbox2 environment.

[nelakurthi koteswararao <koteswararao18%gmail.com@localhost>]

Dear Thomas Klausner

i am compiling mplayer source version exported on  2009/06/11., mplayer-export-2009-06-11

I am running the following commands
# ./configure --disable-smb --enable-directfb --extra-cflags="-I/tftpboot/target/arm/ne1tb/tool/devel/usr/include/directfb -mcpu=mpcore -mfloat-abi=softfp" --enable-armv6 --enable-armvfp 
# gmake.

But i observed the following error at the end of compilation.
{{{
....
hread -lfreetype -lz -llzo2 -lpthread -ldl -rdynamic  -lm   
libass/ass_font.o: In function `ass_font_get_glyph':
ass_font.c:(.text+0x290): undefined reference to `FT_GlyphSlot_Oblique'
libass/ass_render.o: In function `ass_renderer_done':
ass_render.c:(.text+0xdb4): undefined reference to `FT_Stroker_Done'
libass/ass_render.o: In function `reset_render_context':
ass_render.c:(.text+0x1188): undefined reference to `FT_Stroker_Set'
ass_render.c:(.text+0x1200): undefined reference to `FT_Stroker_Done'
ass_render.c:(.text+0x1220): undefined reference to `FT_Stroker_New'
libass/ass_render.o: In function `parse_tag':
ass_render.c:(.text+0x239c): undefined reference to `FT_Stroker_Set'
ass_render.c:(.text+0x24a8): undefined reference to `FT_Stroker_New'
ass_render.c:(.text+0x2730): undefined reference to `FT_Stroker_Done'
libass/ass_render.o: In function `ass_render_event':
ass_render.c:(.text+0x48b4): undefined reference to `FT_Glyph_StrokeBorder'
collect2: ld returned 1 exit status
gmake: *** [mplayer] Error 1
}}}

Do You have any hint for the above bug?
Thanks for allowing me to post a mail to you.

Regards
koteswararao.