Hi, Ian. That's the message received: helcio@jaguar: gcc -Wall test2.c test2.c: Na função ‘main’: /tmp/ccab0AHD.o: In function `main': test2.c:(.text+0xa): undefined reference to `dlq_createQue' collect2: ld returned 1 exit status As root, I've type 'ldconfig'. Nothing changed at all. Best regards. --------------------------------------------- HELCIO WAGNER DA SILVA ----- Mensagem original ----- De: Ian Lance Taylor <iant@xxxxxxxxxx> Para: Helcio Wagner <hwsilva@xxxxxxxxxxxx> Cc: "gcc-help@xxxxxxxxxxx" <gcc-help@xxxxxxxxxxx> Enviadas: Sexta-feira, 22 de Junho de 2012 2:49 Assunto: Re: Can not link to shared libraries with LD_LIBRARY_PATH. Helcio Wagner <hwsilva@xxxxxxxxxxxx> writes: > I am using gcc 4.6.3 on Ubuntu 12.04. > > First of all, I have no LD_LIBRARY_PATH environment variable set. Should I have it? > > Well, I've edited '.bashrc' file to define LD_LIBRARY_PATH and pointed it to '/usr/lib' and '/usr/local/lib' directories: > > export LD_LIBRARY_PATH=/usr/lib:/usr/local/lib It is not normally necessary to add these directories to LD_LIBRARY_PATH. See "man ldconfig". > My executable (named 'test') needs to be linked to two shared libraries to be generated: 'libncx.so.2.2' and 'libagt.so.2.2'. Both are located on '/usr/lib' directory. However, when I type 'gcc -Wall test2.c', there is a message relating undefined references. The executable was not generated. A problem at link time is most likely not due to LD_LIBRARY_PATH. When reporting an error message, please cut and paste the exact, complete, error output. Otherwise we don't know what happened. Ian
