Using ccache for build{world, kernel}
Maxim Sobolev
sobomax at portaone.com
Tue Nov 15 16:06:58 PST 2005
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@~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
> # @@ -331,8 +331,10 @@
> # 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
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