how to tell ngnix where is my libevent?

[bigmeow]

since i build libevent myself, and install it to my home/install dir, 
i have checked auto/configure --help to find options related to libevent
dir, but not find it,

i have also tried to tell nginx the path of libevent using
./auto/configure CFLAGS="-I/home/bigmeow/install/include"
./auto/configure: error: invalid option
"CFLAGS=-I/home/bigmeow/install/include"  
also failed.

so is there any method  to tell ngnix where is my libevent?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,229318,229318#msg-229318