自动为多核计算机设置作业(-j)标志? [英] Automatically setting jobs (-j) flag for a multicore machine?

问题描述

我有一台拥有大量内核的机器上有一个Makefile，但是我似乎总是忘记在编译项目时写-jX，并且花费的时间比应该的长.

I have a Makefile on a machine that has a ton of cores in it, but I always seem to forget to write -jX when compiling my project and it takes way longer than it should.

是否可以通过环境变量或其他持久性配置文件设置-j标志，以便make在该计算机上并行自动执行多个作业?

Is there some way I can set the -j flag through an environment variable or some other persistent config file so that make will automatically execute multiple jobs in parallel on this machine?

推荐答案

看来，MAKEFLAGS环境变量可以传递标志，这些标志是每个make运行的一部分(至少对于GNU make).我本人不太幸运，但是可能可以使用-l而不是-j来自动运行尽可能多的，适合您可用核心数量的作业.

It appears that the MAKEFLAGS environment variable can pass flags that are part of every make run (at least for GNU make). I haven't had much luck with this myself, but it might be possible to use -l rather than -j to automatically run as many jobs as are appropriate for the number of cores you have available.

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