HP aC++/HP C A.06.20 Programmer's Guide

-g1
Like the -g option, the -g1 option causes the compiler to generate minimal information
for the debugger. It uses an algorithm that attempts to reduce duplication of debug
information. To suppress expansion of inline functions, use the +d option.
Differences Between -g, -g0, and -g1 Options
The -g, -g0, and -g1 options generate debug information. The difference is that the
-g0 option emits full debug information about every class referenced in a file, which
can result in some redundant information.
The -g and -g1 options emit a subset of this debug information, thereby decreasing
the size of your object file. If you compile your entire application with -g or -g1, no
debugger functionality is lost.
NOTE: If you compile part of an application with -g or -g1 and part with debug off,
(that is, with neither the -g, the -g0, nor the -g1 option) the resulting executable may
not contain complete debug information. You will still be able to run the executable,
but in the debugger, some classes may appear to have no members.
When to use -g, -g0, and -g1
Use -g or -g1 when you are compiling your entire application with debug on and
your application is large, for example, greater than 1 MB.
Use -g0 when either of the following is true:
• You are compiling only a portion of your application with debug on, for example,
a subset of the files in your application.
• You are compiling your entire application with debug on and your application is
not very large, for example, less than 1 MB.
-g, -g1 Algorithm
In general, the compiler looks for the first non-inline, non-pure (non-zero) virtual
function in order to emit debug information for a class.If there are no virtual member
functions, the compiler looks for the first non-inline member function.
If there are no non-inline member functions, debug information is always generated.
A problem occurs if all functions are inline; in this case, no debug information is
generated.
+macro_debug
This option controls the emission of macro debug information into the object file.
Set +macro_debug to one of the following required options:
Debugging Options 43