Thanks to both you and Jonathan Wakely for responding. > I guess you checked that with ldd on your program, not > strace on the build? Correct, but I also had some printf statements and so it was clear at run time as well. > There are 2 operations called linking. One is when you > create the binary file. Another one is when you run it. -L > tells where to look for libraries during the first one. > -rpath (it is a linker option, so you want -Wl, in front) > tells where to look during the second one. So I should use both -L option and -Wl option while compiling? ~~marco