Re: [Boost-users] problems building Boost-1.55.0 in 32b machines with c++11

Subject: Re: [Boost-users] problems building Boost-1.55.0 in 32b machines with c++11
From: Patricia Mendez Lorenzo (Patricia.Mendez_at_[hidden])
Date: 2015-01-22 05:59:03

Thank you so much Gavin. as a matter of fact, indeed m32 is not needed if I am making the compilation already in a 32b machine, and putting <cxxflags>-std=gnu++0x has really made the difference.

Thank you so much for your support!
Best
Patricia

El 22/01/2015, a las 06:26, Gavin Lambert escribió:

> On 20/01/2015 22:41, Patricia Mendez Lorenzo wrote:
>> Dear Boost experts,
> 
> I'm definitely not an expert, but...
> 
>> since a while I am trying to compile Boost from the source  in a 32b
>> linux machine with c++11 enabled. The compiler version used is gcc4.8.1
>> 
>> This is performed through cmake as follows:
>> 
>> --> Configuration: bootstrap.sh --with-python=<path to /bin/python>
>> --with-toolset=gcc
>> --> Build:  /b2 -j4 variant=release --layout=versioned
>>  --debug-configuration --toolset=gcc --user-config=<path to a
>> user-config.jam>
>> 
>> Where user-config.jam contains the following information:
>> using gcc : : :  <linkflags>-m32 <compileflags>-m32 -std=gnu++0x
>> 
>> also tested it with -std=c++11
>> 
>> And finally installed which basically contains the same options as the
>> build adding --prefix=<installation dir>
>> The libraries built following this procedure does not seem to have been
>> created with c++11.
> 
> If it looks like the main difference is that the -std flag was omitted, did you try using this instead:
> 
> using gcc : : :  <linkflags>-m32 <compileflags>-m32 <cxxflags>-std=gnu++11
> 
> If you're compiling 32bit Boost in a 32bit machine you probably don't need the -m32 options though, so just:
> 
> using gcc : : : <cxxflags>-std=gnu++11
> 
> should do the trick.  (Use gnu++0x instead of gnu++11 if you have an older version of gcc.)
> 
> 
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