On 2007/11/27, Tom St Denis <tstdenis@xxxxxxxxxxxxxxxx> wrote: > This is why you should re-factor your code as to contain only one [or as > few as possible] exportable functions per unit. > > If you write an entire 100K line program as "main.c" of course you'll be > hit by slow compiles. > > But if you factor the code you can get good savings. For instance, one > of my OSS projects (if you know who I am you know what I'm talking > about) is ~50K lines and compiles in ~29 seconds on a pentium 4. It > builds in 8 seconds a quad-core Intel Core2. For most files [units] I > only have one function, so the line count per file is on average ~200 or so. It's good idea, "to refactorize the code" and "to split many functions to many files" (e.g. one file per one function) with the objective of re-compile-time reduction (many compiled objects don't need to be recompiled). GCC needs LTO (Link Time Optimization), too. J.C.Pizarro
