This AOLserver module is required if you want people to connect to your site via https. These commands compile nsopenssl and install it, along with a tcl helper script to handle https connections. You will also need ssl certificates. Because those should be different for each server service, you won't need those instructions until later. You will need the unpacked Aolserver tarball in /usr/local/src/aolserver and the nsopenssl tarball in /tmp.

(Red Hat 9 note: see this thread for details on compiling nsopenssl.)

[root@yourserver bin]# cd /usr/local/src/aolserver
[root@yourserver aolserver]# tar xzf /tmp/nsopenssl-2.1.tar.gz
[root@yourserver aolserver]# cd nsopenssl-2.1
[root@yourserver nsopenssl-2.1]# make OPENSSL=/usr/local/ssl
gcc -I/usr/local/ssl/include -I../aolserver/include -D_REENTRANT=1 -DNDEBUG=1 -g -fPIC -Wall -Wno-unused -mcpu=i686 -DHAVE_CMMSG=1 -DUSE_FIONREAD=1 -DHAVE_COND_EINTR=1   -c -o nsopenssl.o nsopenssl.c
(many lines omitted)
gcc -shared -nostartfiles -o nsopenssl.so nsopenssl.o config.o init.o ssl.o thread.o tclcmds.o -L/usr/local/ssl/lib -lssl -lcrypto
[root@yourserver nsopenssl-2.1]# cp nsopenssl.so /usr/local/aolserver/bin
[root@yourserver nsopenssl-2.1]# cp https.tcl /usr/local/aolserver/modules/tcl/
[root@yourserver nsopenssl-2.1]#
cd /usr/local/src/aolserver
tar xzf /tmp/nsopenssl-2.1.tar.gz 
cd nsopenssl-2.1 
make OPENSSL=/usr/local/ssl 
cp nsopenssl.so /usr/local/aolserver/bin 
cp https.tcl /usr/local/aolserver/modules/tcl/

For Debian (more information):

apt-get install libssl-dev
make OPENSSL=/usr/lib/ssl