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Re: Determining libstdc++ version at compile time

To: Craig Rodrigues <rodrigc at mediaone dot net>
Subject: Re: Determining libstdc++ version at compile time
From: Jason Merrill <jason at redhat dot com>
Date: 20 Mar 2001 13:18:05 +0000
Cc: libstdc++ at gcc dot gnu dot org
References: <20010319202832.A30992@mediaone.net><Pine.SOL.3.91.1010319183124.6386A-100000@cse.cygnus.com><20010319220927.A31269@mediaone.net>

>>>>> "Craig" == Craig Rodrigues <rodrigc@mediaone.net> writes:

> I just looked for that macro and saw that it exists
> on libstdc++-v3 but not on libstdc++-v2.  Is this correct?

> So, my preprocessor check could go something like:

> #if (defined (__GLIBCPP__) && __GLIBCPP__ >= 20010301 )

You don't need the 'defined' check.  If you write

#if __GLIBCPP__ >= 20010301

and __GLIBCPP__ isn't defined, it evaluates to 0.

Jason

References:
- Determining libstdc++ version at compile time
  - From: Craig Rodrigues
- Re: Determining libstdc++ version at compile time
  - From: Benjamin Kosnik
- Re: Determining libstdc++ version at compile time
  - From: Craig Rodrigues

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