Compiling on MacOSX is too long

Compiling on MacOSX is too long

[Exxos Sir]

The builds are too long.

I need at least 1 minute to compile a .o file. I think
(but I'm not sure, that is due to includes given in
params of the gcc compiler, it is not the
compilation's problem).

(the same project in linux or windows takes 10
secondes max).

What are the reasons ?

Note: it is a macOSX G4


	

	
		
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Re: Compiling on MacOSX is too long

[Eljay Love-Jensen]

Hi,

 >The builds are too long.

Some builds take a long time.

There are several techniques you can employ to reduce build times.

+) In your header files, try to use forward references where possible, 
instead of including the header files.

+) To improve on #1, make "header-header" files.  These files contain the 
forward references, and maybe a smattering of other public facilities (such 
as enums).  Use the header-headers in your header files.  The header that 
that the header-header represents should be the first thing included by the 
actual header file.

+) Put guards in all your header files.

+) Include all the headers (or header-headers) that your header or source 
file requires.  Do not include anything beyond that!

+) Do not make "kitchen sink header files", which include everything.

+) Used the "pointer-to-implementation" technique (the "pimpl pattern"), to 
reduce rebuild time.

+) Follow Lako's suggestions, Large-Scale C++ Software Design 
<http://www.amazon.com/exec/obidos/tg/detail/-/0201633620>.

+) Follow Peter Miller's suggestions, Recursive Make Considered Harmful 
<http://www.tip.net.au/~millerp/rmch/recu-make-cons-harm.html>.

HTH,
--Eljay