header compilation

header compilation

[Lorenzo Delana]

Doesn't exists any planned feature for the GCC for the header compilation ?

For example A.c, B.c, C.c are three source code that, for each one, something 
like 10 headers file are included with the same preprocessor directive 
(eg.-DHAVE...) and I would to have a precompiled "header" so that the TIME 
spent in compiling for, if each of these sources are of the same `complexity' 
with time S, and for the 10 header say that H are the time, we have:

 S + H ( first compiling A.c )
 + S + S ( for B.c , C.c )

The compiler should mantain, possibly, a compiled version of the header ( with 
preprocessor informations collected ), in /tmp, so when next request of the 
same header compilation cames, the GCC can `cat' these objects...instead of 
compiling them each time!?:-|

bye
Lore

Re: header compilation

[Mike Stump]

On Thursday, October 10, 2002, at 12:07 PM, Lorenzo Delana wrote:
> Doesn't exists any planned feature for the GCC for the header 
> compilation ?

 From http://gcc.gnu.org/cvs.html:

pch-branch. This branch contains work-in-progress towards a precompiled 
header implementation, including lots of garbage collector changes. As 
yet, the branch contains no actual precompiled header work; a public 
announcement will be made on the GCC mailing list when it is ready for 
testing.

Yes, the feature is planned and being implemented.