I got this error when I tried to compile: So as usual I did a search on Google. WTF no hits about this file. I did a search on Yahoo and got about 9 hits. None of them in an article or help. They where all in the older Visual Studio .dsp file. It is like they put it there just to make it harder to compile PHP5 on windows. There is just no information of what the file does and why it is in linker input additional dependencies. My approach is just to remove it and go from there. Has anyone any information about the file and why it is there. I would be really happy to know about it. Grateful for your comment.