Date: Thu, 22 Jun 2000 11:38:52 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
cc: djgpp AT delorie DOT com
Subject: Re: Inline asm: lcall & various binutils versions
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On Wed, 21 Jun 2000, Richard Dawe wrote:

> > > GAS_VERSION    := $(shell as --version | sed -n 's/^GNU assembler //p')
> > > GAS_MAJOR      := $(shell   echo $(GAS_VERSION) \
> > >                           | sed -n 's/^\([0-9]*\).*/\1/p')
> > > GAS_MINOR      := $(shell   echo $(GAS_VERSION) \
> > >                           | sed -n 's/^[0-9]*\.\([0-9]*\).*/\1/p')
> > > GAS_MINORMINOR := $(shell   echo $(GAS_VERSION) \
> > >                           | sed -n 's/^[0-9]*\.[0-9]*\.\([0-9]*\).*/\1/p')
>
> > > Is this satisfactory? My sed knowledge is limited (*), but this seems
> > > to do the trick.
> > 
> > The Sed scripts can be improved slightly, but they seem to be correct.
> 
> Sure, please tell me how, when you have time.

The last script could be simplified like this:

 GAS_MINORMINOR := $(shell   echo $(GAS_VERSION) \
                           | sed -n 's/.*\.\([0-9][0-9]*\)$/\1/p')

Also note that [0-9]* can pick up zero characters, so [0-9][0-9]* is
safer.