gcccompiler-constructionprofilingsolarisgprof

gcc: undefined reference to _mcount (gprof instrumentation)

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)

Solution

  • Are you both compiling each object file and linking the final executable using the '-pg' flag?