求教,使用ant构建solr-src失败.

想向eclipse中导入solr源码,用ivy和ant按步骤操作,在根目录下运行ant eclipse,但根目录下没有.class文件,还需要别的配置么,哪位大哥指点一下.图片说明图片说明
提示E:\kaifachajian\solr-4.10.3\build.xml:111: The following error occurred while executing this li
ne:
E:\kaifachajian\solr-4.10.3\lucene\build.xml:194: The following error occurred while executing
this line:
E:\kaifachajian\solr-4.10.3\lucene\common-build.xml:438: impossible to resolve dependencies:
resolve failed - see output for details

http://blog.csdn.net/u013092929/article/details/17268265