On Thu, 2006-04-27 at 23:37, Krishna wrote: > But i get the following error message > mips-unknown-linux-gnu-gprof: gmon.out file is missing call-graph data Add a second function to your testcase. You have to have at least two functions in order to have a call graph. If your testcase has only one function, main, then there will be no useful call graph info, so the -pg library support won't bother to emit one, and then gprof complains that it is missing. This is correct, but not very useful, and perhaps should be considered a bug. I think gprof should just default to emitting a flat profile in this case, without giving an error, so I'd call this a binutils bug. In the absence of call-graph info, you can use the gprof -p option to get a flat profile. The above assumes you don't have a profiled C library available. If you did, then you would have at least two profiled functions, main and printf, and would have gotten some call graph info emitted. If you don't have a profiled C library available, you could try compiling one yourself. There is a glibc configure option --enable-profile for that. I've never tried this myself. I'd expect this to be a non-trivial exercise. Besides the issue of compiling glibc, you also need to install the profiled library, and arrange to link with it. -- Jim Wilson, GNU Tools Support, http://www.specifix.com
