DWT information, requirements and installation

[Ty Tower]

Good doob, I thought I would see if I can get any clues from this as to why my installation is not working.
Tango seems to be working and the dmd.conf files are both correct and in the right place.

So I tried building it with the command "dmd main.d" and got errrors as below

bash: TMOUT: readonly variable

[tytower at linuxbox dwt-linux]$ dmd main.d
gcc main.o -o main -m32 -Xlinker -L/usr/bin/../lib -ltango-user-dmd -ltango-base-dmd -lpthread -lm
main.o:(.data+0x38): undefined reference to `_D3dwt7widgets7Display12__ModuleInfoZ'
main.o:(.data+0x3c): undefined reference to `_D3dwt7widgets5Shell12__ModuleInfoZ'
main.o: In function `_Dmain':
main.d:(.text._Dmain+0x8): undefined reference to `_D3dwt7widgets7Display7Display7__ClassZ'
main.d:(.text._Dmain+0x13): undefined reference to `_D3dwt7widgets7Display7Display5_ctorMFZC3dwt7widgets7Display7Display'
main.d:(.text._Dmain+0x1b): undefined reference to `_D3dwt7widgets5Shell5Shell7__ClassZ'
main.d:(.text._Dmain+0x29): undefined reference to `_D3dwt7widgets5Shell5Shell5_ctorMFC3dwt7widgets7Display7DisplayZC3dwt7widgets5Shell5Shell'
collect2: ld returned 1 exit status
--- errorlevel 1


So I thought I would try the "dsss build main.d" just in case and this gave me 

[tytower at linuxbox dwt-linux]$ dsss build main.d
Default prefix /usr is unwritable, using /home/tytower/d instead.
main.d is not described in the configuration file.

so I changed to su and so 

[tytower at linuxbox dwt-linux]$ su
Password:
[root at linuxbox dwt-linux]# dsss build main.d
main.d is not described in the configuration file.

Hmm , so where now ?
Does this give anybody any clues?