Most of these details can be found here: http://dss.macosforge.org/trac/ticket/6
Hopefully they will integrate these patches in to the next release, but until then here are the build instructions for Ubuntu:
Download DSS 6.0.3: http://static.macosforge.org/dss/downloads/DarwinStreamingSrvr6.0.3-Source.tar
Download this patch: http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-6.0.3.patch (Thank you Sverker Abrahamsson!)
And this patch: http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-hh-20080728-1.patch
Finally get the modified Install script: http://dss.macosforge.org/trac/raw-attachment/ticket/6/Install
The basic process is:
1. Get the build dependencies from the repositories.
2. Set up the qtss user (this is because the Install script does it in a way that is incompatible with Ubuntu)
3. Extract the source code.
4. Apply both patches.
5. Replace the Install script and chmod +x it.
6. Compile.
7. Install.
Notably for ssl admin you need the openssl and libnet-ssleay-perl packages, unfortunately even with these packages I was unable to get ssl admin to work.
I created the modified Install script; you can do a diff with the original if you want to see what I changed. Mostly just the paths were broken, but I am guessing that some other modules and such will probably not work.
Here is the bash script I used to do everything (including automatically download everything):
#!/bin/bash
sudo apt-get install build-essential wget
sudo addgroup --system qtss
sudo adduser --system --no-create-home --ingroup qtss qtss
wget http://static.macosforge.org/dss/downloads/DarwinStreamingSrvr6.0.3-Source.tar
tar -xvf DarwinStreamingSrvr6.0.3-Source.tar
mv DarwinStreamingSrvr6.0.3-Source DarwinStreamingSrvr6.0.3-Source.orig
wget http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-6.0.3.patch
patch -p0 < dss-6.0.3.patch
mv DarwinStreamingSrvr6.0.3-Source.orig DarwinStreamingSrvr6.0.3-Source
wget http://dss.macosforge.org/trac/raw-attachment/ticket/6/dss-hh-20080728-1.patch
patch -p0 < dss-hh-20080728-1.patch
#need to answer n then y
cd DarwinStreamingSrvr6.0.3-Source
mv Install Install.orig
wget http://dss.macosforge.org/trac/raw-attachment/ticket/6/Install
chmod +x Install
./Buildit
sudo ./Install
Update 2/2/2009: I changed the links to all point to dss.macosforge.org, which is a much more reliable host. Everyone should also take a look at that thread, as there are a lot of updates, including a newer patch from Horace Hsieh. I haven't played with this in a while, but if I get a chance I will try to update this with the newer patch. Please let me know if there are any problems (I just turned comment notifications on :/).