Somewhat OT: Using Pipes Inside a GNU Make File

Bryan Drewery bryan at shatow.net
Thu Sep 6 00:24:19 UTC 2012


On 9/5/2012 7:02 PM, Tim Daneliuk wrote:
> A bit off topic, but I'm kind of stuck.  I am using gmake and want to
> do something like this:
> 
>    FOO := $(shell a | b | c)
> 
> But this appears not to work.  Only the 'a' command is executed.  The
> remainder
> of the pipeline is ignored.  Is there some clean way to implement this
> kind of thing?
> 
> 

I use this in a GNUMakefile and it works fine.

    BRANCH := $(shell git branch --no-color | grep "^*" | sed -e 's/^\* //')


You may need to post a more specific example.

Bryan


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