Public SourceMage Discussion List

[Ismael Luceno <ismael.luceno AT gmail.com>]

El Wed, 9 Apr 2008 23:57:28 -0300
Ismael Luceno <ismael.luceno AT gmail.com> escribió:

> El Wed, 9 Apr 2008 13:49:20 -0700
> Eric K Sandall <eric AT sandall.us> escribió:
> 
> > On Wednesday 09 April 2008 11:14:55 Remko van der Vossen wrote:
> > > On Wed, Apr 09, 2008 at 10:21:52AM -0700, Eric K Sandall wrote:
> > > > gcc/DEPENDS has the following:
> > > > if  [[ "$(installed_version mpfr|sed 's:\.::g')" < 230 ]]
> > > > then
> > > >   force_depends  mpfr
> > > > fi  &&
> > > >
> > > > Which *should* pull in mpfr if it has not already been updated
> > > > to 2.3.1.
> > >
> > > uhmn.. (x < 230 or x >= 2.3.1) does not seem to be a tautology...
> > >
> > > Remko
> > 
> > Worked here, feel free to fix it if it's broken. Note that all
> > versions after 2.3.1 will be > 2.3.0 with the above code, which
> > removes the "." characters. So if mpfr 2.3.1 (or newer) is not
> > installed, gcc will force mpfr to be compiled before itself.
> > 
> > -sandalle
> > 
> 
> There should be a function to compare versions, something like:
> 
> sver() {
>       echo $(( `sed -e 's/\./ * 2048 + /g'` ))
> }
> 
> I guess 11bit padding is enough...
> 

Ouch, that's wrong. A friend suggested this:

echo $((sed -e ':loop;s/\([^.-]*\)[.-]/(\1) * 2048 + /;tloop' ))

Still, it has some problems:
- it should not be sensible to changes like 1.9.2 to 1.9.2.1
- it should support letters in the version

-- 
Ismael Luceno

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