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    Static Class Diagram and Call Graph for ES

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    emulationstatio how to development source
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    • LolonoisL
      Lolonois
      last edited by

      Mini How-To

      This will create a navigatable class diagram and method call graph from the EmulationStation source tree.

      1. Have EmulationStation sources cloned in some directory at your Pi (or Linux host/WSL: Adjust package manager commands below accordingly to your Linux distro).
      2. Change to that directory
      3. Run sudo apt install doxygen graphviz
      4. Run doxygen -g
      5. Save patchfile from below in the same folder, e.g. as Doxyfile.ES.
      6. Apply patch patch < Doxyfile.ES.
      7. Review/adjust settings for OUTPUT_DIRECTORY, NUM_PROC_THREADS and DOT_NUM_THREADS in Doxyfile
      8. Now you are done with the one-time operations.
      9. Run doxygen and let it finish. Rerun this command if sources are changed.
      10. Open index.html in <OUTPUT_DIRECTORY>/html/ in a browser.
      11. Will present you something like this. (NB: Call graph is more below, not in caption):

      Doxysample_scaled.jpg

      Here is the patch (settings for Doxygen):

      --- Doxyfile    2022-11-18 12:25:55.958663648 +0100
+++ Doxyfile.ES 2022-11-18 12:33:04.935927849 +0100
@@ -32,7 +32,7 @@
 # title of most generated pages and in a few other places.
 # The default value is: My Project.
 
-PROJECT_NAME           = "My Project"
+PROJECT_NAME           = "EmulationStation"
 
 # 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
@@ -58,7 +58,8 @@
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       =
+# adjust to needs
+OUTPUT_DIRECTORY       = /home/pi/RetroPie
 
 # 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
@@ -471,7 +472,7 @@
 # DOT_NUM_THREADS setting.
 # Minimum value: 0, maximum value: 32, default value: 1.
 
-NUM_PROC_THREADS       = 1
+NUM_PROC_THREADS       = 4
 
 #---------------------------------------------------------------------------
 # Build related configuration options
@@ -485,31 +486,31 @@
 # normally produced when WARNINGS is set to YES.
 # The default value is: NO.
 
-EXTRACT_ALL            = NO
+EXTRACT_ALL            = YES
 
 # If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
 # be included in the documentation.
 # The default value is: NO.
 
-EXTRACT_PRIVATE        = NO
+EXTRACT_PRIVATE        = YES
 
 # If the EXTRACT_PRIV_VIRTUAL tag is set to YES, documented private virtual
 # methods of a class will be included in the documentation.
 # The default value is: NO.
 
-EXTRACT_PRIV_VIRTUAL   = NO
+EXTRACT_PRIV_VIRTUAL   = YES
 
 # If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
 # scope will be included in the documentation.
 # The default value is: NO.
 
-EXTRACT_PACKAGE        = NO
+EXTRACT_PACKAGE        = YES
 
 # If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
 # included in the documentation.
 # The default value is: NO.
 
-EXTRACT_STATIC         = NO
+EXTRACT_STATIC         = YES
 
 # 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,
@@ -810,7 +811,7 @@
 # will automatically be disabled.
 # The default value is: YES.
 
-WARN_IF_UNDOCUMENTED   = YES
+WARN_IF_UNDOCUMENTED   = NO
 
 # If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
 # potential errors in the documentation, such as not documenting some parameters
@@ -852,7 +853,7 @@
 # messages should be written. If left blank the output is written to standard
 # error (stderr).
 
-WARN_LOGFILE           =
+WARN_LOGFILE           = /tmp/doxygen.log
 
 #---------------------------------------------------------------------------
 # Configuration options related to the input files
@@ -864,7 +865,7 @@
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  =
+INPUT                  = es-app/src,es-core/src,external/nanosvg,external/pugixml
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -943,7 +944,7 @@
 # be searched for input files as well.
 # The default value is: NO.
 
-RECURSIVE              = NO
+RECURSIVE              = YES
 
 # The EXCLUDE tag can be used to specify files and/or directories that should be
 # excluded from the INPUT source files. This way you can easily exclude a
@@ -1074,13 +1075,13 @@
 # also VERBATIM_HEADERS is set to NO.
 # The default value is: NO.
 
-SOURCE_BROWSER         = NO
+SOURCE_BROWSER         = YES
 
 # Setting the INLINE_SOURCES tag to YES will include the body of functions,
 # classes and enums directly into the documentation.
 # The default value is: NO.
 
-INLINE_SOURCES         = NO
+INLINE_SOURCES         = YES
 
 # Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
 # special comment blocks from generated source code fragments. Normal C, C++ and
@@ -1565,7 +1566,7 @@
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-DISABLE_INDEX          = NO
+DISABLE_INDEX          = YES
 
 # The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
 # structure should be generated to display hierarchical information. If the tag
@@ -1582,7 +1583,7 @@
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-GENERATE_TREEVIEW      = NO
+GENERATE_TREEVIEW      = YES
 
 # The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
 # doxygen will group on one line in the generated HTML documentation.
@@ -1790,7 +1791,7 @@
 # If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
 # The default value is: YES.
 
-GENERATE_LATEX         = YES
+GENERATE_LATEX         = NO
 
 # The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
@@ -2364,7 +2365,7 @@
 # Minimum value: 0, maximum value: 32, default value: 0.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_NUM_THREADS        = 0
+DOT_NUM_THREADS        = 4
 
 # When you want a differently looking font in the dot files that doxygen
 # generates you can specify the font name using DOT_FONTNAME. You need to make
@@ -2493,7 +2494,7 @@
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-CALL_GRAPH             = NO
+CALL_GRAPH             = YES
 
 # If the CALLER_GRAPH tag is set to YES then doxygen will generate a caller
 # dependency graph for every global function or class method.
@@ -2505,7 +2506,7 @@
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-CALLER_GRAPH           = NO
+CALLER_GRAPH           = YES
 
 # If the GRAPHICAL_HIERARCHY tag is set to YES then doxygen will graphical
 # hierarchy of all classes instead of a textual one.
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