Cannot find boost library

Question

This is a very basic question, I only post because I've spent already some time into it. This is what I've done so far:

Downloaded and compiled the boost library:

sudo ./bootstrap.sh and sudo ./bjam install

This way it was installed into /usr/local/lib.

In my source code I've added only:

#include <boost/asio.hpp>
using boost::asio::ip::tcp

I compile it with:

g++ -I/usr/lib/jvm/java-6-openjdk/include -L/usr/local/lib -fPIC -lboost_system -shared -o libagent.so agent.cpp
However, ldd -d ./libagent.so gives me:

libboost_system.so.1.46.1 => not found
But there is no error thrown, when using the -lboost_system and ls /usr/local/lib gets me among other things:

libboost_system.so
libboost_system.a

What am I missing?

Have you run ldconfig? http://linux.die.net/man/8/ldconfig – PhilMY Mar 24 '11 at 09:36 — PhilMY, Mar 24 '11 at 09:36

score 3 · Accepted Answer · answered Mar 24 '11 at 09:31

3

Did the ./bjam install tool also run the ldconfig(8) tool? ldconfig(8) needs to be run after new libraries are installed to update the caches used by ld.so(8) at program execution time.

answered Mar 24 '11 at 09:31

sarnold

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this. You need to run (as root) `ldconfig -u`. – Alexandre C. Mar 24 '11 at 09:32
And /usr/local/lib should be in path list of ldconfig. – jopa Mar 24 '11 at 09:33
1

Thanks, running sudo ldconfig -n /usr/local/lib solved the problem. – Konrad Reiche Mar 24 '11 at 09:38

score 1 · Answer 2 · answered Mar 24 '11 at 09:40

You should compile it with:

g++ -I/usr/lib/jvm/java-6-openjdk/include -L/usr/local/lib -Wl,-rpath,/usr/local/lib -fPIC -lboost_system -shared -o libagent.so agent.cpp

This makes it look for the boost library in /usr/local/lib at runtime, the -L option only makes it look in /usr/local/lib at compile time.

Cannot find boost library

2 Answers2

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