Hi, local machine(A): boost-1.33.1, suse 10.3, gcc-4.2.1 A:/home/aa # ldconfig -p | grep boost_thread libboost_thread-mt.so.1.33.1 (libc6) => /usr/lib/libboost_thread-mt.so.1.33.1 libboost_thread-mt.so (libc6) => /usr/lib/libboost_thread-mt.so remote machine(B): boost-1.34.1, fedora 10, gcc-4.3.2. And i can NOT configure B. B:/home/bb # ldconfig -p | grep boost_thread libboost_thread-mt.so.3 (libc6) => /usr/lib/libboost_thread-mt.so.3 libboost_thread-mt.so (libc6) => /usr/lib/libboost_thread-mt.so The problem is that i compile main in A with LDFLAGS=-lboost_thread-mt. And main is linked to libboost_thread-mt.so.1.33.1. A:~/aa> ldd main | grep boost_thread libboost_thread-mt.so.1.33.1 => /usr/lib/libboost_thread-mt.so.1.33.1 (0xb7ca6000) When i try to run main in B, it fails, of course, with message: "main: error while loading shared library: libboost_thread-mt.so.1.33.1: can not open shared object file: No such file or directory." How can i force g++ link main to libboost_thread-mt.so in A? Thanks in advance!:) -- Louis Chen Southeast University, Nanjing Email:cszzys@gmail.com