Re: [Audacity-devel] Precompiled Headers

[<Mar...@ao...>]

 
I want to save 3mins 14secs as well!  Are you going to check this in  or 
leave me to spend many hours trying to save 3mins 14secs!  ;-)
 
Martyn
 
In a message dated 20/06/2006 21:42:24 GMT Daylight Time, cr...@in...  
writes:



Dominic/James/Leland wrote:
>>>Could you check to  see if VC++ has an option like gcc's "-include"
>>>option???   That would be a lot cleaner!

>>Unfortunately VC++ does not  :-(

> Yepper, it does.  It's called "Force Includes" and is on  the 
C/C++->Advanced
> page.

Brilliant.  Your Googling is  better than mine :-)

> I've turned build timing on, and currently a  clean build of Audacity
> only (libraries already built) takes 3mins  48secs.  I'd like to 
reduce > this.

Using this setting and  precompiled headers the time is down to 34 
seconds.  A very welcome  gain.  Thank you Dominic and Leland.




Additional  changes needed to get this working (this is MSVC++ specific):
1) AudacityHeaders.h needs

#ifdef __WXMAC__
#include  <wx/mac/private.h>
#endif

Otherwise we can't compile it on  Windows.
2) Project options Use Precompiled Headers (/Yu) for  project.
3) Project options Create/Use PCH Through file  AudacityHeaders.h
4) Add an essentially empty .cpp file,  AudacityHeaders.cpp which 
compiles with option Create Precompiled header  (/Yc).

Without the last step the precompiled header doesn't get updated  when 
one of the header files it mentions changes.

Give it a  whirl.






--James.



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