Re: [boost] [config] 'requres' doesn't take differing -std into account

Subject: Re: [boost] [config] 'requres' doesn't take differing -std into account
From: John Maddock (jz.maddock_at_[hidden])
Date: 2015-06-22 11:56:43

> Hmmm currently I use b2 toolset=clang cxxflags=-std=c++03  is that so 
> bad?
>

It depends - on a clean run it's fine, but object files built with some 
other -std= option won't get rebuilt, and likewise cached config options 
may be out of date.

John.

PS in my user-config.jam I have:

using gcc : 4.9.2 : 
"C:/Progra~1/mingw-w64/x86_64-4.9.2-win32-seh-rt_v4-rev2/mingw64/bin/g++.exe" 
;
using gcc : 4.9.2s11 : 
"C:/Progra~1/mingw-w64/x86_64-4.9.2-win32-seh-rt_v4-rev2/mingw64/bin/g++.exe" 
: <cxxflags>-std=gnu++11 ;
using gcc : 4.9.2s14 : 
"C:/Progra~1/mingw-w64/x86_64-4.9.2-win32-seh-rt_v4-rev2/mingw64/bin/g++.exe" 
: <cxxflags>-std=gnu++14 ;

which works for me.