From b5d921ae4569d39e10199e25a487bd8a23edd750 Mon Sep 17 00:00:00 2001
From: Emmanuele Bassi <ebassi@gnome.org>
Date: Wed, 15 Feb 2017 14:00:28 +0000
Subject: [PATCH] doc: Check for 'dot' and add the relevant configuration

We don't really use it, right now, but it may come in handy later, and
it doesn't cost us anything, since the whole thing is optional anyway.
---
 doc/Doxyfile.in | 43 +++++++++++++++++++++++++++++++++++++++----
 doc/meson.build |  6 ++++++
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index 7ddf4f4..0f3c00d 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -194,13 +194,48 @@ INCLUDE_PATH           = "@top_srcdir@/include" \
                          "@top_builddir@/include"
 INCLUDE_FILE_PATTERNS  = *.h
 PREDEFINED             = DOXYGEN_SHOULD_SKIP_THIS \
-                         "PUBLIC=" \
-                         "EPOXY_PUBLIC=" \
-                         "EPOXY_IMPORTEXPORT="
+                         "EPOXY_BEGIN_DECLS=" \
+                         "EPOXY_END_DECLS=" \
+                         "EPOXY_PUBLIC="
 EXPAND_AS_DEFINED      =
 SKIP_FUNCTION_MACROS   = YES
 
-CLASS_DIAGRAMS         = NO
 ALLEXTERNALS           = NO
 EXTERNAL_GROUPS        = NO
 EXTERNAL_PAGES         = NO
+
+HAVE_DOT               = @HAVE_DOT@
+CLASS_DIAGRAMS         = NO
+MSCGEN_PATH            =
+DIA_PATH               =
+HIDE_UNDOC_RELATIONS   = NO
+DOT_NUM_THREADS        = 0
+DOT_FONTNAME           = Sans
+DOT_FONTSIZE           = 10
+DOT_FONTPATH           =
+CLASS_GRAPH            = NO
+COLLABORATION_GRAPH    = YES
+GROUP_GRAPHS           = YES
+UML_LOOK               = NO
+UML_LIMIT_NUM_FIELDS   = 10
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = NO
+INCLUDED_BY_GRAPH      = NO
+CALL_GRAPH             = NO
+CALLER_GRAPH           = NO
+GRAPHICAL_HIERARCHY    = YES
+DIRECTORY_GRAPH        = YES
+DOT_IMAGE_FORMAT       = png
+INTERACTIVE_SVG        = NO
+DOT_PATH               =
+DOTFILE_DIRS           =
+MSCFILE_DIRS           =
+DIAFILE_DIRS           =
+PLANTUML_JAR_PATH      =
+PLANTUML_INCLUDE_PATH  =
+DOT_GRAPH_MAX_NODES    = 50
+MAX_DOT_GRAPH_DEPTH    = 0
+DOT_TRANSPARENT        = NO
+DOT_MULTI_TARGETS      = YES
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
diff --git a/doc/meson.build b/doc/meson.build
index e49d510..ef886da 100644
--- a/doc/meson.build
+++ b/doc/meson.build
@@ -4,6 +4,12 @@ doxyfile_conf.set('PACKAGE_VERSION', meson.project_version())
 doxyfile_conf.set('top_srcdir', meson.source_root())
 doxyfile_conf.set('top_builddir', meson.build_root())
 
+if find_program('dot', required: false).found()
+  doxyfile_conf.set('HAVE_DOT', 'YES')
+else
+  doxyfile_conf.set('HAVE_DOT', 'NO')
+endif
+
 doxyfile = configure_file(input: 'Doxyfile.in',
                           output: 'Doxyfile',
                           configuration: doxyfile_conf,