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先给出libev的主页http://software./pkg/libev.html，libev是一个高性能的事件驱动模型，与libevent类似，不过设计更为小巧，简洁。
libevent有成功的应用–memcached，libev是一个比较新的项目，代码比较少，所以这几天来研究下这个。
首先从CVS中下载最新的代码：
cvs -z3 -d :pserver:anonymous@cvs./schmorpforge co libev
CVS代码中有autogen.sh文件，执行该文件会生成configure，我机子上出了点问题，需要首先运行
automake –add-missing
然后就是./configure && make && make install 了。
安装好后会有一个提示：
Libraries have been installed in:
/usr/local/lib
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR’
flag during linking and do at least one of the following:
– add LIBDIR to the `LD_LIBRARY_PATH’ environment variable
during execution
– add LIBDIR to the `LD_RUN_PATH’ environment variable
during linking
– use the `-Wl,–rpath -Wl,LIBDIR’ linker flag
– have your system administrator add LIBDIR to `/etc/ld.so.conf’
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
需要注意一下，因为默认这个库安装在了/usr/local/lib/里，所以运行程序时有可能会提示找不到libev.so这个动态库。我们需要在编译时加上-LLIBDIR参数，然后设置LD_RUN_PATH这个环境变量。
安装好为了测试libev，可以使用lighttz，其实我是从这里知道的libev，下载C文件，使用下面的命令来编译：
LD_RUN_PATH=/usr/local/lib/
export LD_RUN_PATH
gcc -LLIBDIR -o lighttz lighttz.c -lev
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