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

["Mcnamara, John" <john.mcnamara@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of David Marchand
> Sent: Tuesday, February 24, 2015 10:21 AM
> To: Panu Matilainen
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v2] mk: Rework gcc version detection to
> permit versions newer than 4.x
> 
> On Tue, Feb 24, 2015 at 11:09 AM, David Marchand
> <david.marchand@6wind.com>
> wrote:
> 
> > On Tue, Feb 24, 2015 at 10:50 AM, Panu Matilainen
> > <pmatilai@redhat.com>
> > wrote:
> >
> >> $ gcc -dumpversion
> >>> 4.7
> >>>
> Hum, how about something like always appending .0.0 to the gcc -
> dumpversion then cut at 3 characters ?

Hi,

Or something like this in Sed or Perl within the $(shell) expansion:


    $ gcc -dumpversion | perl -pe 's/^(\d+\.\d+)$/$1.0/'
    4.7.0

    # Tests:
    $ echo 4.7 | perl -pe 's/^(\d+\.\d+)$/$1.0/'
    4.7.0

    $ echo 4.7.0 | perl -pe 's/^(\d+\.\d+)$/$1.0/'
    4.7.0

    $ echo 4.7.1 | perl -pe 's/^(\d+\.\d+)$/$1.0/' 
    4.7.1

    $ echo 144.7 | perl -pe 's/^(\d+\.\d+)$/$1.0/'  
    144.7.0


John
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