My co-worker said I should unarchive libmqic.a file to mqic.o before I compile my C application.This application has been running well on our compiler AIX box since 1999.Now we installed MQ(V5.2) on our function test box, and it doesn't work. The error message is that some symbol isn't defined in mqic.o file. I'm not sure if I should upgrade MQ and recompile my application.