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Re: [libvirt] [PATCH 0/6] Ensure clean compile with clang



On Mon, May 13, 2013 at 07:53:49PM +0200, Michal Privoznik wrote:
> On 13.05.2013 18:09, Daniel P. Berrange wrote:
> > On Mon, May 13, 2013 at 01:17:21PM +0100, Daniel P. Berrange wrote:
> >> From: "Daniel P. Berrange" <berrange redhat com>
> >>
> >> There are various problems building libvirt with clang,
> >> which mostly revolve around compiler warning handling.
> >> This series fixes all the problems I see with clang
> >> 3.2 on a Fedora 19 x86_64 host.
> > 
> > FYI, I measured the following compile times for the src/
> > directory
> > 
> >     GCC: 2 minutes 40 seconds
> >   CLang: 1 minute 50 seconds
> > 
> > So Clang cuts approx 30% off the GCC compile time, which is
> > quite nice. I might have to switch to running clang by
> > default for libvirt :-)
> > 
> > Daniel
> > 
> 
> FYI:
> 
> ./autogen --system:   4m40.064s
> make -j5 all :        1m22.870s
> 
> so I think compilation is not the major time consumer here :)

I run 'autogen.sh' perhaps 2-3 times a day. I run 'make' as many
as 10-20 times an *hour*. So yes, compilation is the major time
consumer.

Daniel
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