在makefile中同时运行一些操作 [英] Run some actions at the same time in a makefile

问题描述

我有以下makefile.

我希望运行step0，然后我希望所有b*.R脚本同时在step1中运行 . step1完成后，我要运行final.

I would like step0 to run then I would like all of the b*.R scripts to run at the same time in step1. When step1 is complete I would like final to run.

当我运行make或make -j 8时，似乎所有b*.R文件仍按顺序运行.此makefile是否已正确设置为同时运行所有b*.R文件?如果没有，我需要更改什么.

When I run make or make -j 8 it seems like all of the b*.R files still run sequentially. Is this makefile set up correctly to run all of the b*.R files at the same time? If not what do I need to change.

final : step1
    Rscript c.R

step1 : step0
    Rscript b1.R
    Rscript b2.R
    Rscript b3.R
    Rscript b4.R
    Rscript b5.R
    Rscript b6.R

step0 : 
    Rscript a.R

推荐答案

当我运行make或make -j 8时，似乎所有b * .R文件仍按顺序运行.

When I run make or make -j 8 it seems like all of the b*.R files still run sequentially.

-jN允许并行执行不同配方，而不是构成配方的单个命令.

-jN allows parallel execution of different recipes, not the individual commands constituting a recipe.

因此，makefile应该像这样重组:

So the makefile should be restructured like this:

.PHONY: final b1 b2 b3 b4 b5 b6 step0

final: b1 b2 b3 b4 b5 b6
b1 b2 b3 b4 b5 b6: step0

b1: ;Rscript b1.R
b2: ;Rscript b2.R
b3: ;Rscript b3.R
b4: ;Rscript b4.R
b5: ;Rscript b5.R
b6: ;Rscript b6.R

step0: ;Rscript a.R

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