Parallel port building: Difference between revisions
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To enable parralel port building, | FreeBSD 8.0 has brought a long-awaited feature to the table: Parallel port building. The catch is that it is a huge job to go through the 20000+ ports in FreeBSD and check if they can be built in parallel. Each port needs to be checked by a maintainer and then marked as <code>MAKE_JOBS_SAFE=yes</code> to take advantage of the new feature. The thing is, most of the ports work - only a small number have problems. If you are brave, you can enable parallel building of all the ports that has not been marked as MAKE_JOBS_SAFE or MAKE_JOBS_UNSAFE yet. I haven't had any problems, but keep in mind if you are unable to build a port, remember to remove this from <code>/etc/make.conf</code> and try again, before panicking. | ||
To enable parralel port building for all ports, except the ones marked as MAKE_JOBS_UNSAFE, add the following to <code>/etc/make.conf</code>: | |||
<pre> | <pre> | ||
FORCE_MAKE_JOBS=yes | FORCE_MAKE_JOBS=yes | ||
| Line 5: | Line 7: | ||
</pre> | </pre> | ||
The number 4 is how many jobs should run at once (-j4 to <code>make</code>) - I normally use double the number of cores. | The number 4 is how many jobs should run at once (-j4 to <code>make</code>) - I normally use double the number of cores. The default is the number of cores. I haven't really measured the difference. #cores*2 is just old habit from countless <code>buildworld</code> runs. | ||
Revision as of 01:52, 12 April 2010
FreeBSD 8.0 has brought a long-awaited feature to the table: Parallel port building. The catch is that it is a huge job to go through the 20000+ ports in FreeBSD and check if they can be built in parallel. Each port needs to be checked by a maintainer and then marked as MAKE_JOBS_SAFE=yes to take advantage of the new feature. The thing is, most of the ports work - only a small number have problems. If you are brave, you can enable parallel building of all the ports that has not been marked as MAKE_JOBS_SAFE or MAKE_JOBS_UNSAFE yet. I haven't had any problems, but keep in mind if you are unable to build a port, remember to remove this from /etc/make.conf and try again, before panicking.
To enable parralel port building for all ports, except the ones marked as MAKE_JOBS_UNSAFE, add the following to /etc/make.conf:
FORCE_MAKE_JOBS=yes MAKE_JOBS_NUMBER=4
The number 4 is how many jobs should run at once (-j4 to make) - I normally use double the number of cores. The default is the number of cores. I haven't really measured the difference. #cores*2 is just old habit from countless buildworld runs.
