MPLAB ? C32 C Compiler User’s Guide
1.8.5
Options for Debugging
The following options are used for debugging.
TABLE 1-7:
DEBUGGING OPTIONS
Option
-g
-Q
-save-temps
Definition
Produce debugging information.
MPLAB C32 C compiler supports the use of -g with -O making it
possible to debug optimized code. The shortcuts taken by
optimized code may occasionally produce surprising results:
? Some declared variables may not exist at all;
? Flow of control may briefly move unexpectedly;
? Some statements may not be executed because they
compute constant results or their values were already at
hand;
? Some statements may execute in different places because
they were moved out of loops.
Nevertheless it proves possible to debug optimized output. This
makes it reasonable to use the optimizer for programs that might
have bugs.
Makes the compiler print out each function name as it is
compiled, and print some statistics about each pass when it
finishes.
Don’t delete intermediate files. Place them in the current
directory and name them based on the source file. Thus,
compiling foo.c with -c -save-temps would produce the
following files:
DS51686A-page 26
foo.i
foo.s
foo.o
(preprocessed file)
(assembly language file)
(object file)
? 2007 Microchip Technology Inc.
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