Pradip Jadav wrote: > But when I compiles in cygwin it gives me some "Undefined reference" errors. > Take an example, > > /cygdrive/e/DOCUME~1/LOCALS~1/Temp/ccLMFYUe.o:sample.c:(.text+0x4c): > undefined reference to `createlog(int, char*, ...)' > > Now this "createlog" function is defined in one of .cpp file of my > main program.(Just for your information) > > Can you help me to solve problem of "undefined reference" ??
The undefined reference is because fundamentally ELF (Linux) and PE/COFF (Windows) are very different in terms of how linking works under the hood. The short explanation is that PE/COFF requires all references to be resolved at link-time, thus you have to explicitly tell the linker where createlog() is to be found. But I've typed this explanation so many times, I think I'll just start linking to past copies of it: http://www.cygwin.com/ml/cygwin/2005-07/msg00675.html http://www.cygwin.com/ml/cygwin/2006-12/msg00592.html http://www.cygwin.com/ml/cygwin/2007-06/msg00450.html Brian -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
