Re: Using ccache for build{world, kernel}

I have better patch which extends detection mechanism, so that along 
with size/mtime checksum of the compiler binary is stored as well. Since 
compiler binary linked from the same sources/objects will have the same 
checksum it allows ccache to be used OOB with buildworld. Do you have 
any interest in putting it into the port?

http://www.portaone.com/~sobomax/ccache.buildworld

-Maxim

Jens Schweikhardt wrote:
> Folks,
> 
> # Put this in /usr/ports/devel/ccache/files/patch-nohash-size-mtime and
> # reinstall the port. Then export CCACHE_NOHASH_SIZE_MTIME=y during your
> # makes for buildworld and buildkernel. This melts my buildworld time
> # from 2700s (real_at_~100%CPU) to under 1000s and buildkernel from 800s
> # to 250s, so you gain about a factor 3 for ab-initio builds. Sweet!
> # 
> # 
> # --- ccache.c.orig	Mon Oct 31 17:38:21 2005
> # +++ ccache.c	Mon Oct 31 17:52:31 2005
> # _at__at_ -331,8 +331,10 _at__at_
> #  		hash_string(str_basename(args->argv[0]));
> #  	}
> #  
> # -	hash_int(st.st_size);
> # -	hash_int(st.st_mtime);
> # +	if (!getenv("CCACHE_NOHASH_SIZE_MTIME")) {
> # +		hash_int(st.st_size);
> # +		hash_int(st.st_mtime);
> # +	}
> [Rest of patch snipped ...]
> 
> I just asked the devel/ccache maintainer to commit this patch and he
> promptly did (Thanks Michael Johnson, aka ahze!). So you only need this
> unless your ports tree is current as of now.
> 
> Regards,
> 
> 	Jens