Hi,
First a bit of context: for the GTK+ port of WebKit
(www.webkitgtk.org) we are using autotools as our build system
(autoconf+automake+libtool, the whole lot). We have a *lot* of files,
so the resulting Makefile is about 9MB in size and takes, in my
system, about 55s to go through a null-build
On 01/03/2011 04:43 PM, Xan Lopez wrote:
> Alternatively, is there some well-known way to reduce either the size
> or the processing time for the Makefile in huge automake projects?[1]
Have you tried './configure --disable-dependency-tracking' as a way to
make automake quit outputting -MP options
On Tue, Jan 4, 2011 at 12:46 AM, Eric Blake wrote:
> On 01/03/2011 04:43 PM, Xan Lopez wrote:
>> Alternatively, is there some well-known way to reduce either the size
>> or the processing time for the Makefile in huge automake projects?[1]
>
> Have you tried './configure --disable-dependency-track
Xan Lopez writes:
> I understand this can cause problems if, say, a file is removed from
> the build tree or so, but it's very different to removing completely
> dependency tracking (which indeed makes the null-build be essentially
> 0s).
Do you know _what_ is taking so long? I mean, disk I/O (s
On Tue, Jan 4, 2011 at 1:57 AM, Miles Bader wrote:
> Xan Lopez writes:
>> I understand this can cause problems if, say, a file is removed from
>> the build tree or so, but it's very different to removing completely
>> dependency tracking (which indeed makes the null-build be essentially
>> 0s).
>
On Tue, Jan 4, 2011 at 10:22 AM, Xan Lopez wrote:
>> Do you know _what_ is taking so long? I mean, disk I/O (stats on a cold
>> disk cache), user CPU time (inefficient algos in make), system CPU time
>> (stats on a warm disk cache)...?
>
> Are you talking about the time to process those empty rul
On Tue, Jan 4, 2011 at 2:47 AM, Miles Bader wrote:
>> Are you talking about the time to process those empty rules that are
>> gone if you get rid of -MP or of the remaining 20 seconds?
>
> Both, I suppose. I imagine both have the same inefficiency (just more
> in the -MP case)...
Most of the CPU
Hi,
First a bit of context: for the GTK+ port of WebKit
(www.webkitgtk.org) we are using autotools as our build system
(autoconf+automake+libtool, the whole lot). We have a *lot* of files,
so the resulting Makefile is about 9MB in size and takes, in my
system, about 55s to go through a null-build
Hello Xan,
thanks for the report.
* Xan Lopez wrote on Tue, Jan 04, 2011 at 02:57:07AM CET:
> I did a profile with sysprof but I really didn't know enough of GNU
> make internals to figure out what was going on in detail; I can send
> the output to the list if you think it could be useful. At lea
Hey,
Wasn't what i want (see below) clear enough ?
Vincent Torri
First, it seems that i have deleted your answers while deleting other files.
So I answer to my mail without your comments. Sorry for the inconvenience
(the archive will not display this mail as an answer to your mail)
On Mon,
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