Hi, Right now I am porting an application from solaris to Linux.I am facing a problem in opening a shared library with dlopen().The arguments specified in solaris to this call are RTD_LAZY.It works fine in Solaris. But in Linux dlopen() gives an error in loading the shared object saying that " undefined symbol:XXXXXX". The linker options specified in solaris are " -u -G -dy -M mapfile" . The linker options specified by me in Linux are "-u -symbolic -fPIC -shared --version-script mapfile" Can you tell me in which case above dlopen() fails to load the shared object? Are the options given to the linker sufficient to load a shared object or should I add somemore options to the linker? Can anyone help me out . Regards Phani Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you