Thanks Volodya. 1) LD_LIBRARY_PATH solution worked but now when I run a.out, I get a Segmentation fault. My hello world code is... #include <iostream> #include #include struct MyThreadFunc { void operator( )( ) { std::cout << "Hello World !!!" << std::endl; } } threadFun; int main( ) { boost::thread myThread(threadFun); // Create a thread that starts // running threadFun boost::thread::yield( ); // Give up the main thread's timeslice // so the child thread can get some work // done. // Go do some other work... myThread.join( ); // The current (i.e., main) thread will wait // for myThread to finish before it returns } Thanks in advance for your help Nishant -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Vladimir Prus Sent: Thursday, March 06, 2008 2:00 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] Please help: Getting started with Boost 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 _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users