* core.c (core_sym_class): Ignore symbols without BSF_FUNCTION

set if ignore_non_function is set.
        * gprof.h (ignore_non_functions): Declare.
        * gprof.c (ignore_non_functions): Define.
        (long_options): Add "ignore-non-functions".
        (usage): Add new options.
        (main): Recognize "-D" and "--ignore-non-functions" option.
So we can get more accurate information on Solaris, HPUX and other
systems that can uniquely identify function symbols.

gprof/core.c

@@ -179,6 +179,12 @@ DEFUN (core_sym_class, (sym), asymbol * sym)
     {
       return 0;
     }
+
+  /* If the object file supports marking of function symbols, then we can
+     zap anything that doesn't have BSF_FUNCTION set.  */
+  if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0)
+    return 0;
+
   return 't';			/* it's a static text symbol */
 }