3.6.5.1 G: Produce Debugging Information Option
The -gformat option instructs the compiler to produce additional information, which can be used by
hardware tools to debug your program.
The support formats are tabulated below.
| Format | Debugging file format |
|---|---|
-glevel |
Amount of debugging information produced, where
level is a value from 0 thru 3. |
-gdwarf-3 |
ELF/DWARF release 3. |
By default, the compiler produces
DWARF release 2 files. The -glevel form of this option can be used
in addition to a -g option that specifies the debugging format.
The compiler supports the use of this option with the optimizers enabled, making it possible to debug optimized code; however, the shortcuts taken by optimized code may occasionally produce surprising results, such as variables that do not exist and flow control that changes unexpectedly.