Compile fails, don't know why

[Mathias Lang via Digitalmars-d]

On Friday, 18 March 2016 at 10:11:50 UTC, Nafees wrote:
> On Friday, 18 March 2016 at 10:07:18 UTC, Nafees wrote:
>> I tried to create a separate module for storing classes in, 
>> this is the new module
>> <code>
>> module qlib.classes;
>>
>> [...]
>
> Plus, the code works if the class is in the same module, and I 
> did add the path to the QLib.classes module in the compiler.

See the compilation command:
dmd -O -release "main.d"  "-I/usr/include/dmd" 
"-I/home/nafees/Desktop/Projects/DLibrary" "-odobj/Release" 
"-of/home/nafees/Desktop/Projects/LrnD/LrnD/bin/Release/LrnD" -w 
-vcolumns

Here your module is not linked in, only main.d