g
Tells the compiler to generate a level of
debugging information in the object file.
Syntax
Linux:
-g
[
n
]
Windows:
See option Zi, Z7, ZI.
Arguments
- n
- Is the level of debugging information to be generated. Possible values are:
- 0
- Disables generation of symbolic debug information.
- 1
- Produces minimal debug information for performing stack traces.
- 2
- Produces complete debug information. This is the same as specifying-gwith non.
- 3
- Produces extra information that may be useful for some tools.
Default
- -g or -g2
- The compiler produces complete debug information.
Description
Option
-g
tells the compiler to generate symbolic debugging
information in the object file, which increases the size of the object file.
The compiler does not support the generation of debugging information in
assemblable files. If you specify this option, the resulting object file will
contain debugging information, but the assemblable file will not.
This option turns off option
-O2
and makes option
-O0
the default unless option
-O2
(or higher) is explicitly specified in the same command
line.
Specifying the
-g
or
-O0
option sets the
-fno-omit-frame-pointer
option.
Linux
For C++, the -debug inline-debug-info option
will be enabled by default if you compile with optimizations (option
-O2
or higher) and debugging is enabled with option
-g
.
When option
-g
is specified, debugging information is generated in the
DWARF Version 3 format. Older versions of some analysis tools may require
applications to be built with the
-gdwarf-2
option to ensure correct operation.
IDE Equivalent
Visual Studio:
None
Eclipse:
General > Include Debug
Information
Alternate Options
Linux: None
Windows: /Zi, /Z7
,
/ZI