[root@lab onscripter-20101003]# make -f Makefile.WinCE
arm-mingw32ce-g++ -finput-charset=cp932 -fexec-charset=cp932 -o onscripter.exe onscripter.o DirectReader.o SarReader.o NsaReader.o sjis2utf16.o ScriptHandler.o ScriptParser.o ScriptParser_command.o ONScripterLabel.o ONScripterLabel_animation.o ONScripterLabel_command.o ONScripterLabel_effect.o ONScripterLabel_effect_breakup.o ONScripterLabel_event.o ONScripterLabel_file.o ONScripterLabel_file2.o ONScripterLabel_image.o ONScripterLabel_rmenu.o ONScripterLabel_sound.o ONScripterLabel_text.o AnimationInfo.o FontInfo.o DirtyRect.o resize_image.o  -static `/usr/local/mingw32ce/arm-mingw32ce/bin/sdl-config --libs` -lSDL_ttf -lSDL_image -lSDL_mixer -lSDL -lmad -lfreetype -ljpeg -lpng -lz -lbz2
ONScripterLabel.o:ONScripterLabel.cp:(.text+0x1df8): undefined reference to `SDL_JoystickOpen'
/usr/local/mingw32ce/arm-mingw32ce/lib/libmingw32.a(winmain_ce.o): In function `WinMain':
/home/danny/src/cegcc/svn.sf.net/cegcc/trunk/cegcc/src/mingw/winmain_ce.c:151: undefined reference to `main'
collect2: ld returned 1 exit status

出现这个错误的原因是什么？

[培训]《安卓高级研修班(网课)》月薪三万计划，掌握调试、分析还原ollvm、vmp的方法，定制art虚拟机自动化脱壳的方法