[clue] [tech] reliable multicore/multi-CPU builds of OpenWRT

[Jim Ockers]

Hi CLUEbies,

Have any of you figured out a way to reliably build OpenWRT on a 
multiprocessor system?  I get weird build failures if I have more than 
one make job running.  That is, make -j2 or higher gets weird build 
errors like this:

make[3]: Leaving directory 
`/home/build/router/v10/backfire/package/mmc_over_gpio'
make[2]: Leaving directory `/home/build/router/v10/backfire'
make[1]: *** 
[/home/build/router/v10/backfire/staging_dir/target-armeb_v5te_uClibc-0.9.30.1_eabi/stamp/.package_compile] 
Error 2
make[1]: Leaving directory `/home/build/router/v10/backfire'
make: *** [world] Error 2

If I restart the build then it proceeds past this point and then fails 
the same way soon afterward on a different package.  I want to run with 
make -j4 on an Athlon X4. This forum posting makes it seem like the 
OpenWRT build system and environment is not set up for multiprocessor 
builds:
> https://forum.openwrt.org/viewtopic.php?id=28564
I was just hoping someone out there had figured out some way or had some 
idea how to get this to work...?  The build takes a really long time 
with just one CPU.

Thanks,
Jim

-- 
Jim Ockers, P.E., P.Eng. (ockers at ockers.net)
Contact info: http://www.ockers.net/


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