help GD编译出错

trigger2005

错误信息如下：
/usr/include/freetype2/freetype/freetype.h:20:2: #error "`ft2build.h' hasn't been included yet!"
/usr/include/freetype2/freetype/freetype.h:21:2: #error "lease always use macros to include FreeType header files."
/usr/include/freetype2/freetype/freetype.h:22:2: #error "Example:"
/usr/include/freetype2/freetype/freetype.h:23:2: #error "  #include <ft2build.h>"
/usr/include/freetype2/freetype/freetype.h:24:2: #error "  #include FT_FREETYPE_H"


请高手指教