XL Fortran Enterprise Edition for AIX : User's Guide - IBM

-qtbtable Option
Syntax
-qtbtable={none | small | full}
Limits the amount of debugging traceback information in object files, which
reduces the size of the program.
You can use this option to make your program smaller, at the cost of making it
harder to debug. When you reach the production stage and want to produce a
program that is as compact as possible, you can specify -qtbtable=none.
Otherwise, the usual defaults apply: code compiled with -g or without -O has full
traceback information (-qtbtable=full), and code compiled with -O contains less
(-qtbtable=small).
Arguments
none The object code contains no traceback information at all. You cannot debug
the program, because a debugger or other code-examination tool cannot
unwind the program’s stack at run time. If the program stops because of a
run-time exception, it does not explain where the exception occurred.
small The object code contains traceback information but not the names of
procedures or information about procedure parameters. You can debug the
program, but some non-essential information is unavailable to the
debugger. If the program stops because of a run-time exception, it explains
where the exception occurred but reports machine addresses rather than
procedure names.
full The object code contains full traceback information. The program is
debuggable, and if it stops because of a run-time exception, it produces a
traceback listing that includes the names of all procedures in the call chain.
Background Information
This option is most suitable for programs that contain many long procedure
names, such as the internal names constructed for module procedures. You may
find it more applicable to C++ programs than to Fortran programs.
Restrictions
To use the performance tools, such as tprof, in the AIX Performance Toolbox, you
must compile the Fortran programs with -qtbtable=full.
Related Information
See “-g Option” on page 108, “-O Option” on page 114, “Debugging Optimized
Code” on page 321, and “-qcompact Option” on page 142.
XL Fortran Compiler-Option Reference 249