Main purpose of a Precompiled header file

Question

My dll project is generating, not only DLL and LIB files but, also a Precompiled file header file. What is the main purpose of a PFH file in my project? Can I get rid of it?

Answer 1

Yes you can get rid of it, but it makes compilation notably faster by allowing the compiler to not recompile a ton (there's really a lot of code in there) of Windows SDK headers. MSDN has more details.

Answer 2

It's simply a way of speeding up compilation, by creating a single file containing all declarations and definitions from multiple header files. Often this file is in a post-parsed format, so the compiler don't have to parse it again.