Configuration

Format

A configuration file is a free-form ASCII text file with a structure that is similar to that of a Makefile, with the default name Doxyfile. It is parsed by doxygen. The file may contain tabs and newlines for formatting purposes. The statements in the file are case-sensitive. Comments may be placed anywhere within the file (except within quotes). Comments begin with the # character and end at the end of the line.

The file essentially consists of a list of assignment statements. Each statement consists of a TAG_NAME written in capitals, followed by the = character and one or more values. If the same tag is assigned more than once, the last assignment overwrites any earlier assignment. For options that take a list as their argument, the += operator can be used instead of = to append new values to the list. Values are sequences of non-blanks. If the value should contain one or more blanks it must be surrounded by quotes ("..."). Multiple lines can be concatenated by inserting a backslash (\) as the last character of a line. Environment variables can be expanded using the pattern $(ENV_VARIABLE_NAME).

You can also include part of a configuration file from another configuration file using a @INCLUDE tag as follows:

@INCLUDE = config_file_name
The include file is searched in the current working directory. You can also specify a list of directories that should be searched before looking in the current working directory. Do this by putting a @INCLUDE_PATH tag with these paths before the @INCLUDE tag, e.g:
@INCLUDE_PATH = my_config_dir

The configuration options can be divided into several categories. Below is an alphabetical index of the tags that are recognized followed by the descriptions of the tags grouped by category.

Project related options

DOXYFILE_ENCODING
This tag specifies the encoding used for all characters in the config file that follow. The default is UTF-8 which is also the encoding used for all text before the first occurrence of this tag. Doxygen uses libiconv (or the iconv built into libc) for the transcoding. See http://www.gnu.org/software/libiconv for the list of possible encodings.

PROJECT_NAME
The PROJECT_NAME tag is a single word (or a sequence of words surrounded by double-quotes) that should identify the project for which the documentation is generated. This name is used in the title of most generated pages and in a few other places.

PROJECT_NUMBER
The PROJECT_NUMBER tag can be used to enter a project or revision number. This could be handy for archiving the generated documentation or if some version control system is used.

OUTPUT_DIRECTORY
The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path into which the generated documentation will be written. If a relative path is entered, it will be relative to the location where doxygen was started. If left blank the current directory will be used.

CREATE_SUBDIRS
If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 4096 sub-directories (in 2 levels) under the output directory of each output format and will distribute the generated files over these directories. Enabling this option can be useful when feeding doxygen a huge amount of source files, where putting all generated files in the same directory would otherwise causes performance problems for the file system.

OUTPUT_LANGUAGE
The OUTPUT_LANGUAGE tag is used to specify the language in which all documentation generated by doxygen is written. Doxygen will use this information to generate all constant output in the proper language. The default language is English, other supported languages are: Afrikaans, Arabic, Brazilian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Lithuanian, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, and Ukrainian.

USE_WINDOWS_ENCODING
This tag can be used to specify the encoding used in the generated output. The encoding is not always determined by the language that is chosen, but also whether or not the output is meant for Windows or non-Windows users. In case there is a difference, setting the USE_WINDOWS_ENCODING tag to YES forces the Windows encoding, (this is the default for the Windows binary), whereas setting the tag to NO uses a Unix-style encoding (the default for all platforms other than Windows).

BRIEF_MEMBER_DESC
If the BRIEF_MEMBER_DESC tag is set to YES (the default) doxygen will include brief member descriptions after the members that are listed in the file and class documentation (similar to JavaDoc). Set to NO to disable this.

REPEAT_BRIEF
If the REPEAT_BRIEF tag is set to YES (the default) doxygen will prepend the brief description of a member or function before the detailed description

Note:
If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the brief descriptions will be completely suppressed.
ABBREVIATE_BRIEF
This tag implements a quasi-intelligent brief description abbreviator that is used to form the text in various listings. Each string in this list, if found as the leading text of the brief description, will be stripped from the text and the result after processing the whole list, is used as the annotated text. Otherwise, the brief description is used as-is. If left blank, the following values are used ("\$name" is automatically replaced with the name of the entity): "The $name class" "The $name widget" "The $name file" "is" "provides" "specifies" "contains" "represents" "a" "an" "the".

ALWAYS_DETAILED_SEC
If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then doxygen will generate a detailed section even if there is only a brief description.

INLINE_INHERITED_MEMB
If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all inherited members of a class in the documentation of that class as if those members were ordinary class members. Constructors, destructors and assignment operators of the base classes will not be shown.

FULL_PATH_NAMES
If the FULL_PATH_NAMES tag is set to YES doxygen will prepend the full path before files name in the file list and in the header files. If set to NO the shortest path that makes the file name unique will be used

STRIP_FROM_PATH
If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag can be used to strip a user-defined part of the path. Stripping is only done if one of the specified strings matches the left-hand part of the path. The tag can be used to show relative paths in the file list. If left blank the directory from which doxygen is run is used as the path to strip.

STRIP_FROM_INC_PATH
The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the path mentioned in the documentation of a class, which tells the reader which header file to include in order to use a class. If left blank only the name of the header file containing the class definition is used. Otherwise one should specify the include paths that are normally passed to the compiler using the -I flag.

CASE_SENSE_NAMES
If the CASE_SENSE_NAMES tag is set to NO then doxygen will only generate file names in lower-case letters. If set to YES upper-case letters are also allowed. This is useful if you have classes or files whose names only differ in case and if your file system supports case sensitive file names. Windows users are advised to set this option to NO.

SHORT_NAMES
If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but less readable) file names. This can be useful is your file systems doesn't support long names like on DOS, Mac, or CD-ROM.

JAVADOC_AUTOBRIEF
If the JAVADOC_AUTOBRIEF is set to YES then doxygen will interpret the first line (until the first dot) of a JavaDoc-style comment as the brief description. If set to NO (the default), the Javadoc-style will behave just like regular Qt-style comments (thus requiring an explicit @brief command for a brief description.)

QT_AUTOBRIEF
If the QT_AUTOBRIEF is set to YES then doxygen will interpret the first line (until the first dot) of a Qt-style comment as the brief description. If set to NO (the default), the Qt-style will behave just like regular Qt-style comments (thus requiring an explicit \brief command for a brief description.)

BUILTIN_STL_SUPPORT
If you use STL classes (i.e. std::string, std::vector, etc.) but do not want to include (a tag file for) the STL sources as input, then you should set this tag to YES in order to let doxygen match functions declarations and definitions whose arguments contain STL classes (e.g. func(std::string); v.s. func(std::string) {}). This also make the inheritance and collaboration diagrams that involve STL classes more complete and accurate.

CPP_CLI_SUPPORT
If you use Microsoft's C++/CLI language, you should set this option to YES to enable parsing support.

SIP_SUPPORT
Set the SIP_SUPPORT tag to YES if your project consists of sip sources only. Doxygen will parse them like normal C++ but will assume all classes use public instead of private inheritance when no explicit protection keyword is present.

IDL_PROPERTY_SUPPORT
For Microsoft's IDL there are propget and propput attributes to indicate getter and setter methods for a property. Setting this option to YES (the default) will make doxygen to replace the get and set methods by a property in the documentation. This will only work if the methods are indeed getting or setting a simple type. If this is not the case, or you want to show the methods anyway, you should set this option to NO.

DISTRIBUTE_GROUP_DOC
If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC tag is set to YES, then doxygen will reuse the documentation of the first member in the group (if any) for the other members of the group. By default all members of a group must be documented explicitly.

MULTILINE_CPP_IS_BRIEF
The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen treat a multi-line C++ special comment block (i.e. a block of //! or /// comments) as a brief description. This used to be the default behaviour. The new default is to treat a multi-line C++ comment block as a detailed description. Set this tag to YES if you prefer the old behaviour instead. Note that setting this tag to YES also means that rational rose comments are not recognized any more.

INHERIT_DOCS
If the INHERIT_DOCS tag is set to YES (the default) then an undocumented member inherits the documentation from any documented member that it re-implements.

SEPARATE_MEMBER_PAGES
If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce a new page for each member. If set to NO, the documentation of a member will be part of the file/class/namespace that contains it.

TAB_SIZE
the TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen uses this value to replace tabs by spaces in code fragments.

ALIASES
This tag can be used to specify a number of aliases that acts as commands in the documentation. An alias has the form
 name=value
For example adding
 "sideeffect=\par Side Effects:\n" 
will allow you to put the command \sideeffect (or @sideeffect) in the documentation, which will result in a user-defined paragraph with heading "Side Effects:". You can put \n's in the value part of an alias to insert newlines.

OPTIMIZE_OUTPUT_FOR_C
Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources only. Doxygen will then generate output that is more tailored for C. For instance, some of the names that are used will be different. The list of all members will be omitted, etc.

OPTIMIZE_OUTPUT_JAVA
Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or Python sources only. Doxygen will then generate output that is more tailored for that language. For instance, namespaces will be presented as packages, qualified scopes will look different, etc.

OPTIMIZE_FOR_FORTRAN
Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran sources. Doxygen will then generate output that is tailored for Fortran.

OPTIMIZE_OUTPUT_VHDL
Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL sources. Doxygen will then generate output that is tailored for VHDL.

EXTENSION_MAPPING
Doxygen selects the parser to use depending on the extension of the files it parses. With this tag you can assign which parser to use for a given extension. Doxygen has a built-in mapping, but you can override or extend it using this tag. The format is ext=language, where ext is a file extension, and language is one of the parsers supported by doxygen: IDL, Java, Javascript, C#, C, C++, D, PHP, Objective-C, Python, Fortran, VHDL, C, C++. For instance to make doxygen treat .inc files as Fortran files (default is PHP), and .f files as C (default is Fortran), use: inc=Fortran f=C

SUBGROUPING
Set the SUBGROUPING tag to YES (the default) to allow class member groups of the same type (for instance a group of public functions) to be put as a subgroup of that type (e.g. under the Public Functions section). Set it to NO to prevent subgrouping. Alternatively, this can be done per class using the \nosubgrouping command.

TYPEDEF_HIDES_STRUCT
When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum is documented as struct, union, or enum with the name of the typedef. So typedef struct TypeS {} TypeT, will appear in the documentation as a struct with name TypeT. When disabled the typedef will appear as a member of a file, namespace, or class. And the struct will be named TypeS. This can typically be useful for C code in case the coding convention dictates that all compound types are typedef'ed and only the typedef is referenced, never the tag name.

SYMBOL_CACHE_SIZE
The SYMBOL_CACHE_SIZE determines the size of the internal cache use to determine which symbols to keep in memory and which to flush to disk. When the cache is full, less often used symbols will be written to disk. For small to medium size projects (<1000 input files) the default value is probably good enough. For larger projects a too small cache size can cause doxygen to be busy swapping symbols to and from disk most of the time causing a significant performance penality. If the system has enough physical memory increasing the cache will improve the performance by keeping more symbols in memory. Note that the value works on a logarithmic scale so increasing the size by one will rougly double the memory usage. The cache size is given by this formula: $2^{(16+\mbox{SYMBOL\_CACHE\_SIZE})}$. The valid range is 0..9, the default is 0, corresponding to a cache size of $2^{16} = 65536$ symbols.

Build related options

EXTRACT_ALL
If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in documentation are documented, even if no documentation was available. Private class members and static file members will be hidden unless the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES

Note:
This will also disable the warnings about undocumented members that are normally produced when WARNINGS is set to YES
EXTRACT_PRIVATE
If the EXTRACT_PRIVATE tag is set to YES all private members of a class will be included in the documentation.

EXTRACT_STATIC
If the EXTRACT_STATIC tag is set to YES all static members of a file will be included in the documentation.

EXTRACT_LOCAL_CLASSES
If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) defined locally in source files will be included in the documentation. If set to NO only classes defined in header files are included. Does not have any effect for Java sources.

EXTRACT_ANON_NSPACES
If this flag is set to YES, the members of anonymous namespaces will be extracted and appear in the documentation as a namespace called 'anonymous_namespace{file}', where file will be replaced with the base name of the file that contains the anonymous namespace. By default anonymous namespace are hidden.

EXTRACT_LOCAL_METHODS
This flag is only useful for Objective-C code. When set to YES local methods, which are defined in the implementation section but not in the interface are included in the documentation. If set to NO (the default) only methods in the interface are included.

HIDE_UNDOC_MEMBERS
If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all undocumented members inside documented classes or files. If set to NO (the default) these members will be included in the various overviews, but no documentation section is generated. This option has no effect if EXTRACT_ALL is enabled.

HIDE_UNDOC_CLASSES
If the HIDE_UNDOC_CLASSESS tag is set to YES, doxygen will hide all undocumented classes. If set to NO (the default) these classes will be included in the various overviews. This option has no effect if EXTRACT_ALL is enabled.

HIDE_FRIEND_COMPOUNDS
If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all friend (class|struct|union) declarations. If set to NO (the default) these declarations will be included in the documentation.

HIDE_IN_BODY_DOCS
If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any documentation blocks found inside the body of a function. If set to NO (the default) these blocks will be appended to the function's detailed documentation block.

INTERNAL_DOCS
The INTERNAL_DOCS tag determines if documentation that is typed after a \internal command is included. If the tag is set to NO (the default) then the documentation will be excluded. Set it to YES to include the internal documentation.

HIDE_SCOPE_NAMES
If the HIDE_SCOPE_NAMES tag is set to NO (the default) then doxygen will show members with their full class and namespace scopes in the documentation. If set to YES the scope will be hidden.

SHOW_INCLUDE_FILES
If the SHOW_INCLUDE_FILES tag is set to YES (the default) then doxygen will put a list of the files that are included by a file in the documentation of that file.

INLINE_INFO
If the INLINE_INFO tag is set to YES (the default) then a tag [inline] is inserted in the documentation for inline members.

SORT_MEMBER_DOCS
If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen will sort the (detailed) documentation of file and class members alphabetically by member name. If set to NO the members will appear in declaration order.

SORT_BRIEF_DOCS
If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief descriptions of file, namespace and class members alphabetically by member name. If set to NO (the default) the members will appear in declaration order.

SORT_GROUP_NAMES
If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy of group names into alphabetical order. If set to NO (the default) the group names will appear in their defined order.

SORT_BY_SCOPE_NAME
If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by fully-qualified names, including namespaces. If set to NO (the default), the class list will be sorted only by class name, not including the namespace part.
Note:
This option is not very useful if HIDE_SCOPE_NAMES is set to YES.

This option applies only to the class list, not to the alphabetical list.

GENERATE_DEPRECATEDLIST
The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO) the deprecated list. This list is created by putting \deprecated commands in the documentation.

GENERATE_TODOLIST
The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo list. This list is created by putting \todo commands in the documentation.

GENERATE_TESTLIST
The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test list. This list is created by putting \test commands in the documentation.

GENERATE_BUGLIST
The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug list. This list is created by putting \bug commands in the documentation.

ENABLED_SECTIONS
The ENABLED_SECTIONS tag can be used to enable conditional documentation sections, marked by \if <section-label> ... \endif and \cond <section-label> ... \endcond blocks.

MAX_INITIALIZER_LINES
The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the initial value of a variable or define can be. If the initializer consists of more lines than specified here it will be hidden. Use a value of 0 to hide initializers completely. The appearance of the value of individual variables and defines can be controlled using \showinitializer or \hideinitializer command in the documentation.

SHOW_USED_FILES
Set the SHOW_USED_FILES tag to NO to disable the list of files generated at the bottom of the documentation of classes and structs. If set to YES the list will mention the files that were used to generate the documentation.

SHOW_DIRECTORIES
If the sources in your project are distributed over multiple directories then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy in the documentation.

SHOW_FILES
Set the SHOW_FILES tag to NO to disable the generation of the Files page. This will remove the Files entry from the Quick Index and from the Folder Tree View (if specified). The default is YES.

SHOW_NAMESPACES
Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces page. This will remove the Namespaces entry from the Quick Index and from the Folder Tree View (if specified). The default is YES.

Options related to warning and progress messages

QUIET
The QUIET tag can be used to turn on/off the messages that are generated to standard output by doxygen. Possible values are YES and NO, where YES implies that the messages are off. If left blank NO is used.

WARNINGS
The WARNINGS tag can be used to turn on/off the warning messages that are generated to standard error by doxygen. Possible values are YES and NO, where YES implies that the warnings are on. If left blank NO is used.

Tip: Turn warnings on while writing the documentation.

WARN_IF_UNDOCUMENTED
If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag will automatically be disabled.

WARN_IF_DOC_ERROR
If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for potential errors in the documentation, such as not documenting some parameters in a documented function, or documenting parameters that don't exist or using markup commands wrongly.

WARN_NO_PARAMDOC
This WARN_NO_PARAMDOC option can be abled to get warnings for functions that are documented, but have no documentation for their parameters or return value. If set to NO (the default) doxygen will only warn about wrong or incomplete parameter documentation, but not about the absence of documentation.

WARN_FORMAT
The WARN_FORMAT tag determines the format of the warning messages that doxygen can produce. The string should contain the $file, $line, and $text tags, which will be replaced by the file and line number from which the warning originated and the warning text.

WARN_LOGFILE
The WARN_LOGFILE tag can be used to specify a file to which warning and error messages should be written. If left blank the output is written to stderr.

Input related options

INPUT
The INPUT tag is used to specify the files and/or directories that contain documented source files. You may enter file names like myfile.cpp or directories like /usr/src/myproject. Separate the files or directories with spaces.

Note: If this tag is empty the current directory is searched.

INPUT_ENCODING
This tag can be used to specify the character encoding of the source files that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is also the default input encoding. Doxygen uses libiconv (or the iconv built into libc) for the transcoding. See the libiconv documentation for the list of possible encodings.

FILE_PATTERNS
If the value of the INPUT tag contains directories, you can use the FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and *.h ) to filter out the source-files in the directories. If left blank the following patterns are tested: .c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx *.hpp .h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm

FILE_VERSION_FILTER
The FILE_VERSION_FILTER tag can be used to specify a program or script that doxygen should invoke to get the current version for each file (typically from the version control system). Doxygen will invoke the program by executing (via popen()) the command command input-file, where command is the value of the FILE_VERSION_FILTER tag, and input-file is the name of an input file provided by doxygen. Whatever the program writes to standard output is used as the file version.

Example of using a shell script as a filter for Unix:

 FILE_VERSION_FILTER = "/bin/sh versionfilter.sh"

Example shell script for CVS:

#!/bin/sh
cvs status $1 | sed -n 's/^[ \]*Working revision:[ \t]*\([0-9][0-9\.]*\).*/\1/p'

Example shell script for Subversion:

#!/bin/sh
svn stat -v $1 | sed -n 's/^[ A-Z?\*|!]\{1,15\}/r/;s/ \{1,15\}/\/r/;s/ .*//p'

Example filter for ClearCase:

FILE_VERSION_INFO = "cleartool desc -fmt \%Vn"

LAYOUT_FILE
The LAYOUT_FILE tag can be used to specify a layout file which will be parsed by doxygen. The layout file controls the global structure of the generated output files in an output format independent way. The create the layout file that represents doxygen's defaults, run doxygen with the -l option. You can optionally specify a file name after the option, if omitted DoxygenLayout.xml will be used as the name of the layout file. Note that if you run doxygen from a directory containing a file called DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE tag is left empty.

RECURSIVE
The RECURSIVE tag can be used to specify whether or not subdirectories should be searched for input files as well. Possible values are YES and NO. If left blank NO is used.

EXCLUDE
The EXCLUDE tag can be used to specify files and/or directories that should excluded from the INPUT source files. This way you can easily exclude a subdirectory from a directory tree whose root is specified with the INPUT tag.

EXCLUDE_SYMLINKS
The EXCLUDE_SYMLINKS tag can be used select whether or not files or directories that are symbolic links (a Unix filesystem feature) are excluded from the input.

EXCLUDE_PATTERNS
If the value of the INPUT tag contains directories, you can use the EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude certain files from those directories.

Note that the wildcards are matched against the file with absolute path, so to exclude all test directories use the pattern */test/*

EXAMPLE_PATH
The EXAMPLE_PATH tag can be used to specify one or more files or directories that contain example code fragments that are included (see the \include command in section \include).

EXAMPLE_RECURSIVE
If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be searched for input files to be used with the \include or \dontinclude commands irrespective of the value of the RECURSIVE tag. Possible values are YES and NO. If left blank NO is used.

EXAMPLE_PATTERNS
If the value of the EXAMPLE_PATH tag contains directories, you can use the EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and *.h) to filter out the source-files in the directories. If left blank all files are included.

IMAGE_PATH
The IMAGE_PATH tag can be used to specify one or more files or directories that contain images that are to be included in the documentation (see the \image command).

INPUT_FILTER
The INPUT_FILTER tag can be used to specify a program that doxygen should invoke to filter for each input file. Doxygen will invoke the filter program by executing (via popen()) the command:
<filter> <input-file>

where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the name of an input file. Doxygen will then use the output that the filter program writes to standard output.

FILTER_PATTERNS
The FILTER_PATTERNS tag can be used to specify filters on a per file pattern basis. Doxygen will compare the file name with each pattern and apply the filter if there is a match. The filters are a list of the form: pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER is applied to all files.

FILTER_SOURCE_FILES
If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using INPUT_FILTER ) will also be used to filter the input files that are used for producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).

Source browsing related options

SOURCE_BROWSER
If the SOURCE_BROWSER tag is set to YES then a list of source files will
" be generated. Documented entities will be cross-referenced with these sources.
" Note: To get rid of all source code in the generated output, make sure also
" VERBATIM_HEADERS is set to NO.
"

INLINE_SOURCES
Setting the INLINE_SOURCES tag to YES will include the body of functions, classes and enums directly into the documentation.

STRIP_CODE_COMMENTS
Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct doxygen to hide any special comment blocks from generated source code fragments. Normal C and C++ comments will always remain visible.

REFERENCED_BY_RELATION
If the REFERENCED_BY_RELATION tag is set to YES then for each documented function all documented functions referencing it will be listed.

REFERENCES_RELATION
If the REFERENCES_RELATION tag is set to YES then for each documented function all documented entities called/used by that function will be listed.

REFERENCES_LINK_SOURCE
If the REFERENCES_LINK_SOURCE tag is set to YES (the default) and SOURCE_BROWSER tag is set to YES, then the hyperlinks from functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will link to the documentation.

VERBATIM_HEADERS
If the VERBATIM_HEADERS tag is set the YES (the default) then doxygen will generate a verbatim copy of the header file for each class for which an include is specified. Set to NO to disable this.
See also:
Section \class.
USE_HTAGS
If the USE_HTAGS tag is set to YES then the references to source code will point to the HTML generated by the htags(1) tool instead of doxygen built-in source browser. The htags tool is part of GNU's global source tagging system (see http://www.gnu.org/software/global/global.html). The use it do the following:

  1. Install the latest version of global (i.e. 4.8.6 or better)
  2. Enable SOURCE_BROWSER and USE_HTAGS in the config file
  3. Make sure the INPUT points to the root of the source tree
  4. Run doxygen as normal

Doxygen will invoke htags (and that will in turn invoke gtags), so these tools must be available from the command line (i.e. in the search path).

The result: instead of the source browser generated by doxygen, the links to source code will now point to the output of htags.

Alphabetical index options

ALPHABETICAL_INDEX
If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all compounds will be generated. Enable this if the project contains a lot of classes, structs, unions or interfaces.

COLS_IN_ALPHA_INDEX
If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in which this list will be split (can be a number in the range [1..20])

IGNORE_PREFIX
In case all classes in a project start with a common prefix, all classes will be put under the same header in the alphabetical index. The IGNORE_PREFIX tag can be used to specify a prefix (or a list of prefixes) that should be ignored while generating the index headers.

HTML related options

GENERATE_HTML
If the GENERATE_HTML tag is set to YES (the default) doxygen will generate HTML output

HTML_OUTPUT
The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a relative path is entered the value of OUTPUT_DIRECTORY will be put in front of it. If left blank `html' will be used as the default path.

HTML_FILE_EXTENSION
The HTML_FILE_EXTENSION tag can be used to specify the file extension for each generated HTML page (for example: .htm, .php, .asp). If it is left blank doxygen will generate files with .html extension.

HTML_HEADER
The HTML_HEADER tag can be used to specify a user-defined HTML header file for each generated HTML page. To get valid HTML the header file should contain at least a <HTML> and a <BODY> tag, but it is good idea to include the style sheet that is generated by doxygen as well. Minimal example:
  <HTML>
    <HEAD>
      <TITLE>My title</TITLE>
      <LINK HREF="doxygen.css" REL="stylesheet" TYPE="text/css">
    </HEAD>
    <BODY BGCOLOR="#FFFFFF">
If the tag is left blank doxygen will generate a standard header.

The following markers have a special meaning inside the header and footer:

$title
will be replaced with the title of the page.
$datetime
will be replaced with current the date and time.
$date
will be replaced with the current date.
$year
will be replaces with the current year.
$doxygenversion
will be replaced with the version of doxygen
$projectname
will be replaced with the name of the project (see PROJECT_NAME)
$projectnumber
will be replaced with the project number (see PROJECT_NUMBER)
$relpath$
If CREATE_SUBDIRS is enabled, the command $relpath$ can be used to produce a relative path to the root of the HTML output directory, e.g. use $relpath$doxygen.css, to refer to the standard style sheet.

See also section Doxygen usage for information on how to generate the default header that doxygen normally uses.

HTML_FOOTER
The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each generated HTML page. To get valid HTML the footer file should contain at least a </BODY> and a </HTML> tag. A minimal example:
    </BODY>
  </HTML>
If the tag is left blank doxygen will generate a standard footer.

The following commands have a special meaning inside the footer: $title, $datetime, $date, $doxygenversion, $projectname, $projectnumber. Doxygen will replace them by respectively the title of the page, the current date and time, only the current date, the version number of doxygen, the project name (see PROJECT_NAME), or the project number (see PROJECT_NUMBER).

See also section Doxygen usage for information on how to generate the default footer that doxygen normally uses.

HTML_STYLESHEET
The HTML_STYLESHEET tag can be used to specify a user-defined cascading style sheet that is used by each HTML page. It can be used to fine-tune the look of the HTML output. If the tag is left blank doxygen will generate a default style sheet.

See also section Doxygen usage for information on how to generate the style sheet that doxygen normally uses.

HTML_ALIGN_MEMBERS
If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, files or namespaces will be aligned in HTML using tables. If set to NO a bullet list will be used.

Note: Setting this tag to NO will become obsolete in the future, since I only intent to support and test the aligned representation.

HTML_DYNAMIC_SECTIONS
If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML documentation will contain sections that can be hidden and shown after the page has loaded. For this to work a browser that supports JavaScript and DHTML is required (for instance Mozilla 1.0+, Firefox Netscape 6.0+, Internet explorer 5.0+, Konqueror, or Safari).

GENERATE_DOCSET
If the GENERATE_DOCSET tag is set to YES, additional index files will be generated that can be used as input for Apple's Xcode 3 integrated development environment, introduced with OSX 10.5 (Leopard). To create a documentation set, doxygen will generate a Makefile in the HTML output directory. Running make will produce the docset in that directory and running make install will install the docset in ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at startup. See this article for more information.

DOCSET_FEEDNAME
When GENERATE_DOCSET tag is set to YES, this tag determines the name of the feed. A documentation feed provides an umbrella under which multiple documentation sets from a single provider (such as a company or product suite) can be grouped.

DOCSET_BUNDLE_ID
When GENERATE_DOCSET tag is set to YES, this tag specifies a string that should uniquely identify the documentation set bundle. This should be a reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen will append .docset to the name.

GENERATE_HTMLHELP
If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three additional HTML index files: index.hhp, index.hhc, and index.hhk. The index.hhp is a project file that can be read by Microsoft's HTML Help Workshop on Windows.

The HTML Help Workshop contains a compiler that can convert all HTML output generated by doxygen into a single compiled HTML file (.chm). Compiled HTML files are now used as the Windows 98 help format, and will replace the old Windows help format (.hlp) on all Windows platforms in the future. Compressed HTML files also contain an index, a table of contents, and you can search for words in the documentation. The HTML workshop also contains a viewer for compressed HTML files.

CHM_FILE
If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can be used to specify the file name of the resulting .chm file. You can add a path in front of the file if the result should not be written to the html output directory.

HHC_LOCATION
If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can be used to specify the location (absolute path including file name) of the HTML help compiler (hhc.exe). If non-empty doxygen will try to run the HTML help compiler on the generated index.hhp.

GENERATE_CHI
If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag controls if a separate .chi index file is generated (YES) or that it should be included in the master .chm file (NO).

BINARY_TOC
If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag controls whether a binary table of contents is generated (YES) or a normal table of contents (NO) in the .chm file.

TOC_EXPAND
The TOC_EXPAND flag can be set to YES to add extra items for group members to the table of contents of the HTML help documentation and to the tree view.

GENERATE_QHP
If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help (.qch) of the generated HTML documentation.

QHP_NAMESPACE
The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help Project output. For more information please see Qt Help Project / Namespace.

QHP_VIRTUAL_FOLDER
The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt Help Project output. For more information please see Qt Help Project / Virtual Folders.

QHP_CUST_FILTER_NAME
If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to add. For more information please see Qt Help Project / Custom Filters.

QHP_CUST_FILTER_ATTRS
The QHP_CUST_FILTER_ATTRIBUTES tag specifies the list of the attributes of the custom filter to add. For more information please see Qt Help Project / Custom Filters.

QHP_SECT_FILTER_ATTRS
The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this project's filter section matches. Qt Help Project / Filter Attributes.

QHG_LOCATION
If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can be used to specify the location of Qt's qhelpgenerator. If non-empty doxygen will try to run qhelpgenerator on the generated .qhp file.

DISABLE_INDEX
If you want full control over the layout of the generated HTML pages it might be necessary to disable the index and replace it with your own. The DISABLE_INDEX tag can be used to turn on/off the condensed index at top of each page. A value of NO (the default) enables the index and the value YES disables it.

ENUM_VALUES_PER_LINE
This tag can be used to set the number of enum values (range [1..20]) that doxygen will group on one line in the generated HTML documentation.

GENERATE_TREEVIEW
The GENERATE_TREEVIEW tag is used to specify whether a tree-like index structure should be generated to display hierarchical information. If the tag value is set to FRAME, a side panel will be generated containing a tree-like index structure (just like the one that is generated for HTML Help). For this to work a browser that supports JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are probably better off using the HTML help feature. Other possible values for this tag are: HIERARCHIES, which will generate the Groups, Directories, and Class Hierarchy pages using a tree view instead of an ordered list; ALL, which combines the behavior of FRAME and HIERARCHIES, and NONE, which disables this behavior completely. For backwards compatibility with previous releases of Doxygen, the values YES and NO are equivalent to FRAME and NONE respectively.

Via custom stylesheets (see HTML_STYLESHEET) one can further fine tune the look of the index. As an example, the default style sheet generated by doxygen has an example that shows how to put an image at the root of the tree instead of the project name.

TREEVIEW_WIDTH
If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used to set the initial width (in pixels) of the frame in which the tree is shown.

FORMULA_FONTSIZE
Use this tag to change the font size of Latex formulas included as images in the HTML documentation. The default is 10. when you change the font size after a successful doxygen run you need to manually remove any form_*.png images from the HTML output directory to force them to be regenerated.

LaTeX related options

GENERATE_LATEX
If the GENERATE_LATEX tag is set to YES (the default) doxygen will generate $\mbox{\LaTeX}$ output.

LATEX_OUTPUT
The LATEX_OUTPUT tag is used to specify where the $\mbox{\LaTeX}$ docs will be put. If a relative path is entered the value of OUTPUT_DIRECTORY will be put in front of it. If left blank `latex' will be used as the default path.

LATEX_CMD_NAME
The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be invoked. If left blank `latex' will be used as the default command name.

MAKEINDEX_CMD_NAME
The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate index for LaTeX. If left blank `makeindex' will be used as the default command name.

COMPACT_LATEX
If the COMPACT_LATEX tag is set to YES doxygen generates more compact $\mbox{\LaTeX}$ documents. This may be useful for small projects and may help to save some trees in general.

PAPER_TYPE
The PAPER_TYPE tag can be used to set the paper type that is used by the printer. Possible values are:
  • a4 (210 x 297 mm).
  • a4wide (same as a4, but including the a4wide package).
  • letter (8.5 x 11 inches).
  • legal (8.5 x 14 inches).
  • executive (7.25 x 10.5 inches)
If left blank a4wide will be used.

EXTRA_PACKAGES
The EXTRA_PACKAGES tag can be used to specify one or more $\mbox{\LaTeX}$ package names that should be included in the $\mbox{\LaTeX}$ output. To get the times font for instance you can specify
EXTRA_PACKAGES = times
If left blank no extra packages will be included.

LATEX_HEADER
The LATEX_HEADER tag can be used to specify a personal $\mbox{\LaTeX}$ header for the generated $\mbox{\LaTeX}$ document. The header should contain everything until the first chapter.

If it is left blank doxygen will generate a standard header. See section Doxygen usage for information on how to let doxygen write the default header to a separate file.

Note:
Only use a user-defined header if you know what you are doing!
The following commands have a special meaning inside the header: $title, $datetime, $date, $doxygenversion, $projectname, $projectnumber. Doxygen will replace them by respectively the title of the page, the current date and time, only the current date, the version number of doxygen, the project name (see PROJECT_NAME), or the project number (see PROJECT_NUMBER).

PDF_HYPERLINKS

If the PDF_HYPERLINKS tag is set to YES, the $\mbox{\LaTeX}$ that is generated is prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will contain links (just like the HTML output) instead of page references. This makes the output suitable for online browsing using a PDF viewer.

USE_PDFLATEX

If the LATEX_PDFLATEX tag is set to YES, doxygen will use pdflatex to generate the PDF file directly from the $\mbox{\LaTeX}$ files.

LATEX_BATCHMODE

If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode. command to the generated $\mbox{\LaTeX}$ files. This will instruct $\mbox{\LaTeX}$ to keep running if errors occur, instead of asking the user for help. This option is also used when generating formulas in HTML.

LATEX_HIDE_INDICES

If LATEX_HIDE_INDICES is set to YES then doxygen will not include the index chapters (such as File Index, Compound Index, etc.) in the output.

RTF related options

GENERATE_RTF
If the GENERATE_RTF tag is set to YES doxygen will generate RTF output. The RTF output is optimized for Word 97 and may not look too pretty with other readers/editors.

RTF_OUTPUT
The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a relative path is entered the value of OUTPUT_DIRECTORY will be put in front of it. If left blank rtf will be used as the default path.

COMPACT_RTF
If the COMPACT_RTF tag is set to YES doxygen generates more compact RTF documents. This may be useful for small projects and may help to save some trees in general.

RTF_HYPERLINKS
If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will contain hyperlink fields. The RTF file will contain links (just like the HTML output) instead of page references. This makes the output suitable for online browsing using Word or some other Word compatible reader that support those fields.

note:
WordPad (write) and others do not support links.
RTF_STYLESHEET_FILE
Load stylesheet definitions from file. Syntax is similar to doxygen's config file, i.e. a series of assignments. You only have to provide replacements, missing definitions are set to their default value.

See also section Doxygen usage for information on how to generate the default style sheet that doxygen normally uses.

RTF_EXTENSIONS_FILE
Set optional variables used in the generation of an RTF document. Syntax is similar to doxygen's config file. A template extensions file can be generated using doxygen -e rtf extensionFile.

Man page related options

GENERATE_MAN
If the GENERATE_MAN tag is set to YES (the default) doxygen will generate man pages for classes and files.

MAN_OUTPUT
The MAN_OUTPUT tag is used to specify where the man pages will be put. If a relative path is entered the value of OUTPUT_DIRECTORY will be put in front of it. If left blank `man' will be used as the default path. A directory man3 will be created inside the directory specified by MAN_OUTPUT.

MAN_EXTENSION
The MAN_EXTENSION tag determines the extension that is added to the generated man pages (default is the subroutine's section .3)

MAN_LINKS
If the MAN_LINKS tag is set to YES and doxygen generates man output, then it will generate one additional man file for each entity documented in the real man page(s). These additional files only source the real man page, but without them the man command would be unable to find the correct page. The default is NO.

XML related options

GENERATE_XML
If the GENERATE_XML tag is set to YES Doxygen will generate an XML file that captures the structure of the code including all documentation.

XML_OUTPUT
The XML_OUTPUT tag is used to specify where the XML pages will be put. If a relative path is entered the value of OUTPUT_DIRECTORY will be put in front of it. If left blank xml will be used as the default path.

XML_SCHEMA
The XML_SCHEMA tag can be used to specify an XML schema, which can be used by a validating XML parser to check the syntax of the XML files.

XML_DTD
The XML_DTD tag can be used to specify an XML DTD, which can be used by a validating XML parser to check the syntax of the XML files.

XML_PROGRAMLISTING
If the XML_PROGRAMLISTING tag is set to YES Doxygen will dump the program listings (including syntax highlighting and cross-referencing information) to the XML output. Note that enabling this will significantly increase the size of the XML output.

AUTOGEN_DEF related options

GENERATE_AUTOGEN_DEF
If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will generate an AutoGen Definitions (see http://autogen.sf.net) file that captures the structure of the code including all documentation. Note that this feature is still experimental and incomplete at the moment.

PERLMOD related options

GENERATE_PERLMOD
If the GENERATE_PERLMOD tag is set to YES Doxygen will generate a Perl module file that captures the structure of the code including all documentation. Note that this feature is still experimental and incomplete at the moment.

PERLMOD_LATEX
If the PERLMOD_LATEX tag is set to YES Doxygen will generate the necessary Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI output from the Perl module output.

PERLMOD_PRETTY
If the PERLMOD_PRETTY tag is set to YES the Perl module output will be nicely formatted so it can be parsed by a human reader. This is useful if you want to understand what is going on. On the other hand, if this tag is set to NO the size of the Perl module output will be much smaller and Perl will parse it just the same.

PERLMOD_MAKEVAR_PREFIX
The names of the make variables in the generated doxyrules.make file are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful so different doxyrules.make files included by the same Makefile don't overwrite each other's variables.

Preprocessor related options

ENABLE_PREPROCESSING
If the ENABLE_PREPROCESSING tag is set to YES (the default) doxygen will evaluate all C-preprocessor directives found in the sources and include files.

MACRO_EXPANSION
If the MACRO_EXPANSION tag is set to YES doxygen will expand all macro names in the source code. If set to NO (the default) only conditional compilation will be performed. Macro expansion can be done in a controlled way by setting EXPAND_ONLY_PREDEF to YES.

EXPAND_ONLY_PREDEF
If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then the macro expansion is limited to the macros specified with the PREDEFINED and EXPAND_AS_DEFINED tags.

SEARCH_INCLUDES
If the SEARCH_INCLUDES tag is set to YES (the default) the includes files in the INCLUDE_PATH (see below) will be searched if a #include is found.

INCLUDE_PATH
The INCLUDE_PATH tag can be used to specify one or more directories that contain include files that are not input files but should be processed by the preprocessor.

PREDEFINED
The PREDEFINED tag can be used to specify one or more macro names that are defined before the preprocessor is started (similar to the -D option of gcc). The argument of the tag is a list of macros of the form: name or name=definition (no spaces). If the definition and the "=" are omitted, "=1" is assumed. To prevent a macro definition from being undefined via #undef or recursively expanded use the := operator instead of the = operator.

EXPAND_AS_DEFINED
If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this tag can be used to specify a list of macro names that should be expanded. The macro definition that is found in the sources will be used. Use the PREDEFINED tag if you want to use a different macro definition.

SKIP_FUNCTION_MACROS
If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then doxygen's preprocessor will remove all function-like macros that are alone on a line, have an all uppercase name, and do not end with a semicolon. Such function macros are typically used for boiler-plate code, and will confuse the parser if not removed.

External reference options

TAGFILES
The TAGFILES tag can be used to specify one or more tagfiles.

See section Doxytag usage for more information about the usage of tag files.

Optionally an initial location of the external documentation can be added for each tagfile. The format of a tag file without this location is as follows:

TAGFILES = file1 file2 ... 
Adding location for the tag files is done as follows:
TAGFILES = file1=loc1 "file2 = loc2" ... 
where loc1 and loc2 can be relative or absolute paths or URLs, If a location is present for each tag, the installdox tool (see section Installdox usage for more information) does not have to be run to correct the links.

Note:
Each tag file must have a unique name (where the name does not include the path) If a tag file is not located in the directory in which doxygen is run, you must also specify the path to the tagfile here.
GENERATE_TAGFILE
When a file name is specified after GENERATE_TAGFILE, doxygen will create a tag file that is based on the input files it reads. See section Doxytag usage for more information about the usage of tag files.

ALLEXTERNALS
If the ALLEXTERNALS tag is set to YES all external class will be listed in the class index. If set to NO only the inherited external classes will be listed.

EXTERNAL_GROUPS
If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed in the modules index. If set to NO, only the current project's groups will be listed.

PERL_PATH
The PERL_PATH should be the absolute path and name of the perl script interpreter (i.e. the result of `which perl').

Dot options

CLASS_DIAGRAMS
If the CLASS_DIAGRAMS tag is set to YES (the default) doxygen will generate a class diagram (in HTML and $\mbox{\LaTeX}$) for classes with base or super classes. Setting the tag to NO turns the diagrams off. Note that this option is superseded by the HAVE_DOT option below. This is only a fallback. It is recommended to install and use dot, since it yields more powerful graphs.

MSCGEN_PATH
You can define message sequence charts within doxygen comments using the \msc command. Doxygen will then run the msgen tool) to produce the chart and insert it in the documentation. The MSCGEN_PATH tag allows you to specify the directory where the mscgen tool resides. If left empty the tool is assumed to be found in the default search path.

HAVE_DOT
If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is available from the path. This tool is part of Graphviz, a graph visualization toolkit from AT&T and Lucent Bell Labs. The other options in this section have no effect if this option is set to NO (the default)

DOT_FONTNAME
By default doxygen will write a font called FreeSans.ttf to the output directory and reference it in all dot files that doxygen generates. This font does not include all possible unicode characters however, so when you need these (or just want a differently looking font) you can specify the font name using DOT_FONTNAME. You need need to make sure dot is able to find the font, which can be done by putting it in a standard location or by setting the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory containing the font.

DOT_FONTSIZE
The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs. The default size is 10pt.

DOT_FONTPATH
By default doxygen will tell dot to use the output directory to look for the FreeSans.ttf font (which doxygen will put there itself). If you specify a different font using DOT_FONTNAME you can set the path where dot can find it using this tag.

DOT_FONTNAME
By default doxygen will write a font called FreeSans.ttf to the output directory and reference it in all dot files that doxygen generates. This font does not include all possible unicode characters however, so when you need these (or just want a differently looking font) you can specify the font name using DOT_FONTNAME. You need need to make sure dot is able to find the font, which can be done by putting it in a standard location or by setting the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory containing the font.

DOT_FONTPATH
By default doxygen will tell dot to use the output directory to look for the FreeSans.ttf font (which doxygen will put there itself). If you specify a different font using DOT_FONTNAME you can set the path where dot can find it using this tag.

CLASS_GRAPH
If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented class showing the direct and indirect inheritance relations. Setting this tag to YES will force the the CLASS_DIAGRAMS tag to NO.

COLLABORATION_GRAPH
If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented class showing the direct and indirect implementation dependencies (inheritance, containment, and class references variables) of the class with other documented classes.

GROUP_GRAPHS
If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen will generate a graph for groups, showing the direct groups dependencies.

UML_LOOK
If the UML_LOOK tag is set to YES doxygen will generate inheritance and collaboration diagrams in a style similar to the OMG's Unified Modeling Language.

TEMPLATE_RELATIONS
If the TEMPLATE_RELATIONS and HAVE_DOT tags are set to YES then doxygen will show the relations between templates and their instances.

HIDE_UNDOC_RELATIONS
If set to YES, the inheritance and collaboration graphs will hide inheritance and usage relations if the target is undocumented or is not a class.

INCLUDE_GRAPH
If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented file showing the direct and indirect include dependencies of the file with other documented files.

INCLUDED_BY_GRAPH
If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented header file showing the documented files that directly or indirectly include this file.

CALL_GRAPH
If the CALL_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a call dependency graph for every global function or class method. Note that enabling this option will significantly increase the time of a run. So in most cases it will be better to enable call graphs for selected functions only using the \callgraph command.

CALLER_GRAPH
If the CALLER_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a caller dependency graph for every global function or class method. Note that enabling this option will significantly increase the time of a run. So in most cases it will be better to enable caller graphs for selected functions only using the \callergraph command.

GRAPHICAL_HIERARCHY
If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen will graphical hierarchy of all classes instead of a textual one.

DIRECTORY_GRAPH
If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT options are set to YES then doxygen will show the dependencies a directory has on other directories in a graphical way. The dependency relations are determined by the #include relations between the files in the directories.

DOT_GRAPH_MAX_NODES
The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of nodes that will be shown in the graph. If the number of nodes in a graph becomes larger than this value, doxygen will truncate the graph, which is visualized by representing a node as a red box. Note that doxygen if the number of direct children of the root node in a graph is already larger than DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.

MAX_DOT_GRAPH_DEPTH
The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the graphs generated by dot. A depth value of 3 means that only nodes reachable from the root by following a path via at most 3 edges will be shown. Nodes that lay further from the root node will be omitted. Note that setting this option to 1 or 2 may greatly reduce the computation time needed for large code bases. Also note that the size of a graph can be further restricted by DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction (the default).

DOT_IMAGE_FORMAT
The DOT_IMAGE_FORMAT tag can be used to set the image format of the images generated by dot. Possible values are gif, jpg, and png. If left blank png will be used.

DOT_PATH
This tag can be used to specify the path where the dot tool can be found. If left blank, it is assumed the dot tool can be found on the path.

DOTFILE_DIRS
This tag can be used to specify one or more directories that contain dot files that are included in the documentation (see the \dotfile command).

DOT_TRANSPARENT
Set the DOT_TRANSPARENT tag to YES to generate images with a transparent background. This is disabled by default, because dot on Windows does not seem to support this out of the box. Warning: Depending on the platform used, enabling this option may lead to badly anti-aliased labels on the edges of a graph (i.e. they become hard to read).

DOT_MULTI_TARGETS
Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output files in one run (i.e. multiple -o and -T options on the command line). This makes dot run faster, but since only newer versions of dot (>1.8.10) support this, this feature is disabled by default.

GENERATE_LEGEND
If the GENERATE_LEGEND tag is set to YES (the default) doxygen will generate a legend page explaining the meaning of the various boxes and arrows in the dot generated graphs.

DOT_CLEANUP
If the DOT_CLEANUP tag is set to YES (the default) doxygen will remove the intermediate dot files that are used to generate the various graphs.

Search engine options

SEARCHENGINE
The SEARCHENGINE tag specifies whether or not the HTML output should contain a search facility. Possible values are YES and NO. If set to YES, doxygen will produce a search index and a PHP script to search through the index. For this to work the documentation should be viewed via a web-server running PHP version 4.1.0 or higher. (See http://www.php.net/manual/en/installation.php for installation instructions).

Examples

Suppose you have a simple project consisting of two files: a source file example.cc and a header file example.h. Then a minimal configuration file is as simple as:

INPUT            = example.cc example.h

Assuming the example makes use of Qt classes and perl is located in /usr/bin, a more realistic configuration file would be:

PROJECT_NAME     = Example
INPUT            = example.cc example.h
WARNINGS         = YES
TAGFILES         = qt.tag
PERL_PATH        = /usr/bin/perl
SEARCHENGINE     = NO

To generate the documentation for the QdbtTabular package I have used the following configuration file:

PROJECT_NAME     = QdbtTabular
OUTPUT_DIRECTORY = html
WARNINGS         = YES
INPUT            = examples/examples.doc src
FILE_PATTERNS    = *.cc *.h
INCLUDE_PATH     = examples
TAGFILES         = qt.tag
PERL_PATH        = /usr/local/bin/perl
SEARCHENGINE     = YES

To regenerate the Qt-1.44 documentation from the sources, you could use the following config file:

PROJECT_NAME         = Qt
OUTPUT_DIRECTORY     = qt_docs
HIDE_UNDOC_MEMBERS   = YES
HIDE_UNDOC_CLASSES   = YES
ENABLE_PREPROCESSING = YES
MACRO_EXPANSION      = YES
EXPAND_ONLY_PREDEF   = YES
SEARCH_INCLUDES      = YES
FULL_PATH_NAMES      = YES
STRIP_FROM_PATH      = $(QTDIR)/
PREDEFINED           = USE_TEMPLATECLASS Q_EXPORT= \
                       QArrayT:=QArray \
                       QListT:=QList \
                       QDictT:=QDict \
                       QQueueT:=QQueue \
                       QVectorT:=QVector \
                       QPtrDictT:=QPtrDict \
                       QIntDictT:=QIntDict \
                       QStackT:=QStack \
                       QDictIteratorT:=QDictIterator \
                       QListIteratorT:=QListIterator \
                       QCacheT:=QCache \
                       QCacheIteratorT:=QCacheIterator \
                       QIntCacheT:=QIntCache \
                       QIntCacheIteratorT:=QIntCacheIterator \
                       QIntDictIteratorT:=QIntDictIterator \
                       QPtrDictIteratorT:=QPtrDictIterator
INPUT                = $(QTDIR)/doc \
                       $(QTDIR)/src/widgets \
                       $(QTDIR)/src/kernel \
                       $(QTDIR)/src/dialogs \
                       $(QTDIR)/src/tools
FILE_PATTERNS        = *.cpp *.h q*.doc
INCLUDE_PATH         = $(QTDIR)/include 
RECURSIVE            = YES

For the Qt-2.1 sources I recommend to use the following settings:

PROJECT_NAME          = Qt
PROJECT_NUMBER        = 2.1
HIDE_UNDOC_MEMBERS    = YES
HIDE_UNDOC_CLASSES    = YES
SOURCE_BROWSER        = YES
INPUT                 = $(QTDIR)/src
FILE_PATTERNS         = *.cpp *.h q*.doc
RECURSIVE             = YES
EXCLUDE_PATTERNS      = *codec.cpp moc_* */compat/* */3rdparty/*
ALPHABETICAL_INDEX    = YES
COLS_IN_ALPHA_INDEX   = 3
IGNORE_PREFIX         = Q
ENABLE_PREPROCESSING  = YES
MACRO_EXPANSION       = YES
INCLUDE_PATH          = $(QTDIR)/include
PREDEFINED            = Q_PROPERTY(x)= \
                        Q_OVERRIDE(x)= \
                        Q_EXPORT= \
                        Q_ENUMS(x)= \
                        "QT_STATIC_CONST=static const " \
                        _WS_X11_ \
                        INCLUDE_MENUITEM_DEF
EXPAND_ONLY_PREDEF    = YES
EXPAND_AS_DEFINED     = Q_OBJECT_FAKE Q_OBJECT ACTIVATE_SIGNAL_WITH_PARAM \
                        Q_VARIANT_AS

Here doxygen's preprocessor is used to substitute some macro names that are normally substituted by the C preprocessor, but without doing full macro expansion.


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