[dpdk-dev] [PATCH v2] mk: Rework gcc version detection to permit versions newer than 4.x

[Mcnamara, John]

> From: David Marchand [mailto:david.marchand at 6wind.com] 
> Sent: Tuesday, February 24, 2015 10:44 AM
> To: Mcnamara, John
> Cc: Panu Matilainen; dev at dpdk.org; Olivier Matz
> Subject: Re: [dpdk-dev] [PATCH v2] mk: Rework gcc version detection to permit versions newer than 4.x
> 
>> Or something like this in Sed or Perl within the $(shell) expansion:
> 
> Well, we have no dependency on perl so far.
> I would prefer we keep at just makefile and shell stuff.
> 
> Olivier ? opinion ?

Hi,

A similar anchored regex would work in sed:
    
    $ echo 4.7     | sed -r 's/^[0-9]+\.[0-9]$/&.0/'
    4.7.0

    $ echo 4.7.2   | sed -r 's/^[0-9]+\.[0-9]$/&.0/'
    4.7.2

    $ echo 144.7.2 | sed -r 's/^[0-9]+\.[0-9]$/&.0/' 
    144.7.2

John
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