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Re: selective linking of floating point support for printf / scanf

From: Eric Blake <eblake at redhat dot com>
To: "Thomas Preud'homme" <thomas dot preudhomme at arm dot com>, "'Joern Rennecke'" <joern dot rennecke at embecosm dot com>
Cc: GCC <gcc at gcc dot gnu dot org>, Joerg Wunsch <joerg_wunsch at uriah dot heep dot sax dot de>, avr-libc-dev at nongnu dot org, Andrew Burgess <andrew dot burgess at embecosm dot com>, newlib at sourceware dot org
Date: Fri, 29 Aug 2014 07:20:40 -0600
Subject: Re: selective linking of floating point support for *printf / *scanf
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On 08/29/2014 12:04 AM, Thomas Preud'homme wrote:

>> So are you saying you are stuck with printf_float?
> 
> It's not printf_float but _printf_float. I was told double underscore is only
> necessary with old toolchain as they might add a leading underscore. So
> _printf_float should not pose any kind of problem.

Yes, it does.  The namespace reserved for the implementation is _[_A-Z].
 The namespace _[a-z] is still available for the user.  Which means the
user can declare their own _printf_float, and WE (as the implementation)
MUST NOT INTERFERE with it.  Since WE are the implementation, we should
use the namespace reserved for us, namely __printf_float.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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References:
- RFD: selective linking of floating point support for *printf / *scanf
  - From: Joern Rennecke
- RE: selective linking of floating point support for *printf / *scanf
  - From: Thomas Preud'homme
- Re: selective linking of floating point support for *printf / *scanf
  - From: Joern Rennecke
- RE: selective linking of floating point support for *printf / *scanf
  - From: Thomas Preud'homme
- Re: selective linking of floating point support for *printf / *scanf
  - From: Joern Rennecke
- RE: selective linking of floating point support for *printf / *scanf
  - From: Thomas Preud'homme
- Re: selective linking of floating point support for *printf / *scanf
  - From: Joern Rennecke
- RE: selective linking of floating point support for *printf / *scanf
  - From: Thomas Preud'homme
- Re: selective linking of floating point support for *printf / *scanf
  - From: Joern Rennecke
- RE: selective linking of floating point support for *printf / *scanf
  - From: Thomas Preud'homme

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Re: selective linking of floating point support for *printf / *scanf

Re: selective linking of floating point support for printf / scanf