On 12/22/2012 09:07 AM, John Cotton Ericson wrote: > Hello, > > For a little over a year I have worked on porting the a voxel engine > called Voxlap to work on Linux. My code is here: > https://github.com/Ericson2314/Voxlap > > I now can compile the same code with both MSVC and gcc. The MSVC code > runs well enough, but the gcc version does not. Specifically when I run > the MSVC version, everything in-game renders, and a bit of text is > thrown on top as a watermark. When I run the gcc version, all I get is > a black window and that water mark. The problem is exactly whether I > compile on windows with mingw or compile on linux. In both cases I am > compiling the same branch with most of the inline assembly converted to > C, and in both cases I compile against the SDL backend, not the direct X > backend. > > Because I have done my best to hold everything else constant, I am > pretty convinced this error is either due to some subtle difference's in > the two compile's understanding of the C semantics, or an error in the > gcc version of what inline assembly remains (inline assembly being the > only code I can think of which is #ifdefed based on the compiler). > > After a couple of months of sporadically trying to solve this issue, I > am at a loss what to do next. As I did not write the original renderer, > and thus I am only so familiar with it's inner workings. I was hoping > somebody more experience with porting or more knowledge of subtle > differences between gcc and MSVC would be able to help me solve this > issue, which should be the last before I have a basic gcc version ready. You need to start with an unoptimized build; does it crash in the same way? What about building with -Wall ? Andrew.
