Re: [Boost-users] Use of ccache with Boost

Subject: Re: [Boost-users] Use of ccache with Boost
From: Dalton, Tom (tom.dalton_at_[hidden])
Date: 2009-10-05 04:45:21

Further to my questions from last week:

I've tried both methods - first I tried changing the toolset to make the
gcc toolset use "ccache g++" as the compiler executable. I had some
problems with that, so I tried the symlink approach suggested by Roland.
This is also failing, with some seemingly very subtle bug that I can't
suss out.

The build progresses a little way, until it gets to
libs/program_options/src/cmdline.cpp

When g++ isn't a symlink to ccache, I get the following output as shown
by the attachment build.log.1.fragment.
When I have gcc & g++ symlinks in the ccache bin dir pointing to ccache
(the PATH is ccache/bin:real_gcc/bin), the output is like the second
attachment and the file fails.

The build logs diverge from that point onwards as more and more stuff
either fails, or is skipped due to previous failures.

There are 2 issues that I can see from those logs. Firstly the line
numbering on the .hpp includes is one-out on the ccache-enabled build.
Does this mean the preprocessor is behaving strangely? Secondly, on line
15 of the failing fragment file, it looks like part of the output is cut
off (at the end of the line, it gets
"boost::_bi::list2<boost::_bi::v0.000008 sec system; 0.000164 sec user".

Can anyone help me? I don't know what would cause either of these
issues.

Tom

PS Using gcc 4.4.1, ccache 2.4 and tried boost 1.39.0 and 1.40.0, with
the same results.

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Dalton, Tom
Sent: 29 September 2009 16:20
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] Use of ccache with Boost

Daniel and Roland,

Thanks guys, that gives me some good avenues to explore.

Tom

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Daniel James
Sent: 29 September 2009 16:07
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] Use of ccache with Boost

2009/9/29 Dalton, Tom <tom.dalton_at_[hidden]>:
>
> I'm using Boost on Linux however for various reasons I need to rebuild

> parts of it occasionally. For other C/C++-based tools that are built 
> with autoconf/automake, I've started to use ccache
> (http://ccache.samba.org/) to speed up recompilation. This is done 
> simply by setting the CC / CXX environment variables to "ccache gcc" /

> "ccache g++" respectively. I have had a look through the Jam 
> documentation but I can't see an easy way to achieve the same thing 
> when building the Boost distribution. The closest I came was a bit on 
> the trac that simply said I can add a new toolset, but had no real
instructions as to how.

Create a file called 'user-config.jam' in your home directory,
containing something like:

using gcc : : ccache g++ ;

Or possibly with the version number:

using gcc : 4.4 : ccache g++-4.4 ;

For more information see:

http://www.boost.org/doc/libs/1_40_0/doc/html/bbv2/advanced.html#bbv2.ad
vanced.configuration

Daniel
_______________________________________________
Boost-users mailing list
Boost-users_at_[hidden]
http://lists.boost.org/mailman/listinfo.cgi/boost-users
_______________________________________________
Boost-users mailing list
Boost-users_at_[hidden]
http://lists.boost.org/mailman/listinfo.cgi/boost-users