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FIX_INCLUDE(1) User Commands FIX_INCLUDE(1)

NAME

fix_include - Apply changed proposed by Include-what-you-use

SYNOPSIS

fix_include [options] [filename] ... < include-what-you-use.output

or

fix_include -s [options] filename ...

DESCRIPTION

reads the output from on stdin -- run with --verbose=1 (default) or above --. Unless --sort_only or --dry_run is specified, it modifies the files mentioned in the output, removing their old #include lines and replacing them with the lines given by It also sorts the #include and forward-declare lines.

All files mentioned in by are modified, unless filenames are specified on the commandline, in which case only those files are modified.

OPTIONS

Show help message and exit.
(Do not) put a blank line between primary header file and C/C++ system #includes, and another blank line between system #includes and Google #includes [default].
Put (no) comments after the #include lines.
Do (not) remove unused #includes/forward-declares from header files; just add new ones [default].
Just sort #includes of files listed on cmdline; do not add or remove any #includes.
Do not actually edit any files; just print diffs and return the number of files as the exit code.
Will skip editing any file whose name matches this regular expression.
Sort #includes for current project separately from all other #includes. This flag specifies the root directory of the current project. If the value is "<tld>", #includes that share the same top-level directory are assumed to be in the same project. If not specified, project #include\[u0111]Ps will be sorted with other non-system #includes.
Internal flag used by It should be the command line used to invoke
(Do not) keep forward-declaration namespaces in IWYU format, eg.
namespace n1 { namespace n2 { class c1; } }
    
Do not convert to "normalized" Google format:
namespace n1 {
	namespace n2 {
		class c1;
	}
}
    

EXIT STATUS

The exit code is the number of files that were modified (or that would be modified if --dry_run was specified) unless that number exceeds 100, in which case 100 is returned.

SEEL ALSO

May 2026 fix_include 8.23