I find it strange that so many indie game developer companies take on the task of creating native Linux versions of their games, then there are some AAA developers who claim that it costs too much time and money.
My question is if there is a lot of extra code needed to make a native Linux version of a game if you already use a graphics engine that supports Linux?
AFAIK if you know what you are doing and are bit careful what libraries (graphic engine, sound engine) you use it isn’t much extra work. There may be some additional testing needed and there may be some OS specific bugs.
On the other hand if you don’t check what outside code you are using and on what external libraries your code depends on porting the code may take almost rewriting all of your code.
If you are ready and count on having linux version when you start writing the code, you need to do only minor modifications (or almost none) and bit of additional testing. If you don’t think about linux version at the beginning it may be really difficult and may take lot of extra work, especially if you have to find someone who knows how to work with linux.
