On Fri, Jan 15, 2010 at 6:21 AM, Tim Prince <n8tm@xxxxxxx> wrote: > Han wrote: > >> From what I learned (e.g. the book "An introduction to GCC" by Brian >> Gough), /usr/local/lib is searched _before_ /usr/lib by gcc linker for >> libraries. However, using ldd I can see my program always linked to >> the libraries from /usr/lib, even when the same library exists under >> both /usr/lib and /usr/local/lib. >> >> Is "/usr/local/lib" still searched before "/usr/lib" by GCC by >> default? If not, is there a way to force GCC to search /usr/local/lib >> first? >> > > gcc doesn't control this. I hope you are misquoting the textbook. > Presumably, you are running under a shell which supports setting the search > order in PATH and LD_LIBRARY_PATH .... environments. In certain common linux > systems, the default order changes according to the path you use to login > (ssh, telnet, console,....). > it seems my shell does not have LD_LIBRARY_PATH... $ echo $LD_LIBRARY_PATH $ $ env | grep LD_LIBRARY_PATH $
