Linking boost_1_55_0 asio

问题:

I'm using this in my makefile to build my program:

all:    server.cpp
g++ -o server server.cpp -I ~/boost/include -L~/boost/lib -Wl,-rpath,~/boost/lib -lboost_system -lboost_thread -DBOOST_ALL_NO_LIB=1

When I compile I get these warnings:

/usr/bin/ld: warning: libboost_system.so.1.53.0, needed by /usr/local/lib/libboost_thread.so, may conflict with libboost_system.so.5

When I run my program I receive the warning :

 ./server: error while loading shared libraries: libboost_thread.so.1.53.0: cannot open shared object file: No such file or directory

the -Wl/rpath command is not working for me at the moment. I have also tired using

export LD_LIBRARY_PATH=~/boost/lib

before I run my program and I get this back from the terminal:

export: relocation error: export: symbol errno, version GLIBC_2.0 not defined in file libc.so.6 with link time reference

What can I do to specify what library I want to use when I execute the program?

回答1:

The libraries are (usually) boost/lib/stage/lib, not boost/lib.

Also the dynamic loader does not support ~ expansion. Use the fully qualified path, e.g.

 -Wl,-rpath,/home/hededo/boost/stage/lib

Or, indeed, as I showed in my previous answer

 -Wl,-rpath,"$HOME/boost/stage/lib"

The quotes are just to make it work if $HOME contains special characters (like whitespace)

You can also look at

• static linking - so you can use Boost but never rely on any external shared library for it
• the BCP utility is a tool for extracting subsets of Boost (here: bcp)

回答2:

Alternatively you can use the non-boost asio which doesn't require linking with boost.