Re: [Boost-users] Please help: Getting started with Boost

From: Vladimir Prus (ghost_at_[hidden])
Date: 2008-03-06 14:00:12

Nishant Mittal wrote:

> I have a 64 bit red hat linux (also 64 bit) box.
> 
> 
> 1) I downloaded boost from
> 
> boost_1_34_1.tar.bz2
> <http://downloads.sourceforge.net/boost/boost_1_34_1.tar.bz2?modtime=1185241
> 108&big_mirror=0>
> 
> 2) Unizipped and installed it (./configure , make install ) everything
> worked fine.
> 
>  
> 
> Questions:

[Well, neither question is actually a question about Boost, but anyway]
 
> 1)       How do I check if I now have the 64 bit version of boost?

        file <any-library-file>

should produce output such as:

        <library>: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), stripped

You can also use

        readelf -h <any-library-file>

> 
> 2)       I see that all libraries were put into /usr/local/lib and I can
> compile my hello world code with the following command.
> 
> *         $ g++ hello.cpp -lboost_thread-gcc41-mt-1_34_1
> 
> but when I try to run the created a.out file I get a file not found error
> msg.
> 
> *         $ ./a.out
> 
> *         ./a.out: error while loading shared libraries:
> libboost_thread-gcc41-mt-1_34_1.so.1.34.1: cannot open shared object file:
> No such file or directory
> 
> I did an ldd and this is the output.
> 
>             $ ldd a.out
> 
>         libboost_thread-gcc41-mt-1_34_1.so.1.34.1 => not found

You should add /usr/local/lib to LD_LIBRARY_PATH environment variable.

- Volodya