Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 9/08/2022
Public

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Document Table of Contents

g

Tells the compiler to generate a level of debugging information in the object file.

Syntax

Linux:

-g[n]

macOS:

-g[n]

Windows:

See option Zi, Z7.

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 -g with no n.

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 and macOS

For ifort, 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.

NOTE:

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
None
Alternate Options

Linux: None

Windows: /Zi, /Z7

See Also