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From Oliver-Rainer Wittmann <orwittm...@googlemail.com>
Subject Re: Precompiled headers
Date Tue, 21 Jan 2014 08:07:10 GMT
Hi,

On 21.01.2014 08:57, Andre Fischer wrote:
> Yesterday I was asked whether the use of precompiled headers had any
> benefit on the compilation speed.  I thought the answer would be yes but
> I was not sure.  So I did some tests.  And the difference is huge.  I
> compiled sw/ with
>
>      make -sr -j8
>
> on a i7 s2720 (2.2GHz), 8GB Ram laptop.
> Without precompiled headers that takes a little over 19 minutes. With
> precompiled headers that drops down to a little over 10 minutes.  That
> is a reduction of almost 50%.
>

I can confirm Andre's findings.
That is the reason why I had the precompiled headers enabled in all of 
my AOO build environments which I use for development under Windows.

> Maybe we should think to
> a) make the --enable-pch configure switch the default and
+1

> b) remove the word "experimental" from its description.
+10


Best regards, Oliver.

>
> Regards,
> Andre
>
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