Re: [boost] C++03 / C++11 compatibility question for compiled libraries

Subject: Re: [boost] C++03 / C++11 compatibility question for compiled libraries
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2018-02-13 22:05:39

On 13/02/2018 21:05, Olaf van der Spek wrote:
> On Tue, Feb 13, 2018 at 12:21 AM, Gavin Lambert wrote:
>> (Header-only and highly templated libraries can be the worst offenders in
>> this regard: it only takes one translation unit compiled with slightly
>> different settings to break seemingly unrelated code, sometimes apparently
>> at random if the linker picks different ones to keep each time.  Compiled
>> libraries at least have the option of supplying both C++03 and C++11
>> implementations in separate namespaces, though it can become a game of
>> whack-a-mole to enumerate all the different ABI-breaking settings that you
>> want to concurrently support.)
> 
> Why can header-only libs not use different namespaces for 03 and 11?

They can, but it's a little trickier since you will only get the C++03 
implementation if someone actually compiles a translation unit in C++03 
mode.  (Though that's not a bad thing.)