问题
When compiling my c++ sources with the -pg option to inject gprof profile instrumentation code the compile fails with the undefined reference to _mcount error.
Without this option everything compiles (and runs) fine. What is wrong in my case? (Solaris 10 SPARC Platform)
回答1:
Are you both compiling each object file and linking the final executable using the '-pg' flag?
来源：https://stackoverflow.com/questions/4603298/gcc-undefined-reference-to-mcount-gprof-instrumentation