我想为openconnect客户端构建一个jar库。但我找不到配置文件，只有一个configure.ac文件似乎包含配置文件的代码。自述文件的内容无法帮助我：
Description:
This directory contains a JNI interface layer for libopenconnect, and a
demo program to show how it can be used.
Build instructions:
From the top level, run:
./configure --with-java
make
cd java
ant
sudo java -Djava.library.path=../.libs -jar dist/example.jar <server_ip>
If ocproxy[1] is installed somewhere in your $PATH, this can be run as a
non-root user and it should be pingable from across the VPN.
Test/demo code is in src/com/example/
OpenConnect wrapper library is in src/org/infradead/libopenconnect/
[1] http://repo.or.cz/w/ocproxy.git
ant工作但是./configure不起作用。
有什么建议吗？