安装sqwebmail, 运行./configure就死循环.

请高手指点,能帮我看看是什么原因吗？

在做 ./configure 时程序进入死循环，

我查了config.log,最后三句是：
checking where to install sqwebmai cgi binary
checking where to install images
checking for gpg



具体步骤如下：

tar -zxvf sqwebmail-2.1.1.tar.gz
cp -f preauthvchkpw.c sqwebmail-2.1.1/authlib

cd sqwebmail-2.1.1

INCS=-I/usr/include/mysql
export INCS
LIBS="-L/usr/lib/mysql -lmysqlclient -lz"
export LIBS
CPPFLAGS=-I/usr/include/mysql
LDFLAGS=-L/usr/lib/mysql
export CPPFLAGS
export LDFLAGS
./configure --with-cachedir --without-gzip --enable-webpass=yes
--enable-softtimeout=300 --enable-autopurge=180 --enable-maxpurge=180
--with-htmllibdir=/var/www/sqwebmail --enable-cgibindir=/var/www/cgi-bin
--enable-imagedir=/var/www/images/sqwebmail
--enableimageurl=/images/sqwebmail/
--enable-mimecharset=gb2312 --with-maxargsize=5000000
--with-maxformargsize=5000000 --with-maxmsgsize=5000000 --without-ispell
--with-authshadow --without-authmysql --with-authldap --with-authuserdb
--with-authpwd --without-authpam --with-authvchkpw --without-authdaemon