make[1]: *** No rule to make target `../JavaScriptCore/release/libjscore.a', needed by `../../../../lib/libQtWebKit.so.4.7.0'. Stop.
make[1]: Leaving directory `/media/HOCTAP/sonnh/qtnhung/src/3rdparty/webkit/WebCore'
make: *** [sub-webkit-install_subtargets-ordered] Error 2
why? can you help me