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Re: reduce compilation times?
On 2007/11/27, Tom St Denis <email@example.com> 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.