13.0.1 – 2025-06-15$$$Changed$$$When using the CMake build system; the minimum required version of CMake has$$$been upgraded 3.14.1 ? 3.21.$$$Building Graphviz from source now requires a C compiler with ISO C17 support.$$$Processing a graph with GVPR now makes explicit the default $$$ label for$$$nodes.

13.0.0 – 2025-06-08$$$$$$Added$$$$$$Support for building the SWIG-generated Ruby language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_RUBY={AUTO|ON|OFF} option.$$$A new plugin for outputting ASCII art has been implemented; -Tascii. This$$$relies on AA-lib and is only$$$supported in the CMake build system. #2421 (closed)$$$$$$In gvpr; a new function rename() has been added for nodes. See man gvpr$$$for more information.$$$$$$$$$Changed$$$$$$If Quartz is enabled on macOS; the autotools build will include support for it$$$as a built-in plugin for static builds; for dependency free i.e. PDF support.$$$Improved agwrite so it is much faster (linear not quadratic) when there are$$$many small subgraphs. #2593 (closed)$$$$$$$$$Breaking: rank_t.cache_nc is now a int64_t.$$$$$$Breaking: The agreadline function has been removed. #2558$$$$$$$$$Breaking: gvRenderData takes its length parameter as a size_t *. The$$$GVJ_t fields output_data_allocated and output_data_position have type$$$size_t.$$$The GRAPHVIZ_CLI variable in the CMake build system now additionally$$$controls whether the utilities diffimg and prune are built.$$$$$$Breaking: The cgraph macros agnew and agnnew have been removed.$$$$$$Breaking: The cgraph functions agalloc; agrealloc; and agfree have$$$been removed.$$$$$$Breaking: The cdt queue types; DT_QUEUE; Dtqueue; _Dtqueue have been$$$removed.$$$$$$Breaking: The cdt aliases struct _dthold_s; struct _dtdata_s;$$$struct _dtmethod_s; struct _dtstat_s have been removed.$$$$$$Breaking: The cdt type _Dttree has been removed.$$$$$$Breaking: The cdt aliases struct _dtlink_s; struct _dtdisc_s; and$$$struct _dt_s have been renamed to struct dtlink_s_; struct dtdisc_s_;$$$and struct dt_s_ respectively.$$$$$$Breaking: The cdt macro DT_PRIME has been removed.$$$$$$Breaking: The cdt field Dt_t.data is now a Dtdata_t instead of$$$Dtdata_t *.$$$$$$Breaking: GVJ_t.imagedata is now an unsigned char *.$$$The sandboxer implemented in Graphviz 12.2.1; dot_sandbox; supports macOS.$$$The baseline version of Autoconf required to build Graphviz from source has$$$been upgraded 2.61 ? 2.69.$$$Building Graphviz from source now requires a C compiler with ISO C11 support.$$$GVPR programs are now able to print char and unsigned variables. #2587 (closed)$$$$$$CMake projects using Graphviz as a subproject (add_subdirectory) can now$$$link against and use cgraph; pathplan; and xdot.$$$CMake projects using Graphviz as an installed third-party dependency can now$$$discover its libraries with find_package(graphviz) and then use them as e.g.$$$target_link_libraries(myapp PRIVATE graphviz::cgraph). #2598 (closed)$$$$$$Verbose checkpath warnings about ports not lying in their expected boxes$$$have been removed.$$$In verbose mode (-v) the dot layout algorithm now notes when it is entering$$$each layout phase. #2540 (closed)$$$$$$$$$Breaking: The EXPANDBP macro has been removed.$$$$$$Breaking: The EXPANDBB macro has been removed.$$$$$$Breaking: Agclos_t.strdict is now an opaque pointer.$$$$$$Breaking: agstrfree takes an extra parameter indicating whether the$$$string being freed is an HTML-like string.$$$$$$Breaking: The agcanon function has been removed.$$$$$$Breaking: The Agiddisc_t.alloc member has been removed.$$$$$$Breaking: The cflag parameter to agidsubg has been removed.$$$The CMake build system now installs libgvpr.$$$The CMake build system now sets DFLT_GVPRPATH when compiling libgvpr.$$$The CMake build system now installs the included library of gvpr programs.$$$$$$Breaking: The all parameter to exclose has been removed.$$$MinGW on 32-bit x86 (“mingw32”) is no longer supported as a platform.$$$Installers and release archives for this platform are no longer provided.$$$#2649 (closed)$$$$$$$$$gvgen supports a new option; -u<seed>; for specifying the initial state of$$$the random number generator (RNG). The way in which the RNG is seeded has$$$slightly changed.$$$$$$Breaking: libcgraph’s SO name has been updated 6 ? 7.$$$The core plugin’s SVG output (-Tsvg; -Tsvg_inline) now sets$$$xml:space=preserve

12.2.1 – 2024-12-07$$$Added$$$$$$Support for building the SWIG-generated R language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_R={AUTO|ON|OFF} option.$$$A sandboxing wrapper; dot_sandbox; is now included with Graphviz. Users$$$should prefer their platform’s native security solutions; but if nothing$$$better is available this wrapper offers safe processing of untrusted inputs in$$$some scenarios.$$$$$$$$$Changed$$$$$$JPEG images without an APP0 leading segment are supported for use in src$$$fields and friends. Previously Graphviz was overly strict with the types of$$$JPEGs it would recognize. #2619$$$$$$The CMake build system now discovers and uses pango_fc_font_lock_face if$$$possible; for the Pango plugin to provide more information about used fonts.$$$$$$$$$Fixed$$$$$$The GVPR library program depath no longer acts on previously deleted nodes;$$$causing unpredictable results. #1702$$$$$$Void-typed function parameters (int foo(void bar)) and variables void baz;$$$in GVPR are gracefully rejected. #2585$$$$$$Input that induce a set node height but no set node width no longer crash with$$$the failure “Assertion failed: (r->boundary[i] <= r->boundary[NUMDIMS + i]);$$$function RTreeInsert”. It is typically not obvious to users when their input$$$falls into this situation; hence why the assertion message is quoted here.$$$This was a regression in Graphviz 12.0.0. #2613$$$$$$Strings containing double quote characters preceded by escape sequences (e.g.$$$$$$) are once again correctly escaped in dot or canonical output. This was a$$$regression in Graphviz 9.0.0. #2614$$$$$$$$$dot_builtins no longer lists duplicate format options in its error messages.$$$#2604$$$$$$A precision error that resulted in truncated edge lines has been corrected.$$$This was a regression in Graphviz 12.0.0. #2620$$$$$$The xlib plugin (-Tx11) resets its initialization state during finalization.$$$This fixes a rare scenario where multiple input graphs are supplied and$$$initialization for one of the not-first graphs fails. In this scenario;$$$finalization would be unaware of this failure and act on invalid state.

12.2.0 – 2024-11-04$$$$$$Removed$$$$$$Visual Studio build files have been removed. CMake is now the only supported$$$build system on Windows.$$$$$$$$$Added$$$$$$Support for building the SWIG-generated PHP language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_PHP={AUTO|ON|OFF} option.$$$Support for building the SWIG-generated Python language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_PYTHON={AUTO|ON|OFF} option.$$$$$$$$$Changed$$$$$$An algorithm closer to that described in RFC 1942 and/or the CSS 2.1$$$specification is now used for sizing table cells within HTML-like labels. This$$$is less scalable than the network simplex algorithm it replaces; but in$$$general produces more intuitive results. #2159$$$$$$Tooltips on table elements within HTML-like labels are now propagated to SVGs$$$produced by the core plugin (-Tsvg) even when the elements do not have$$$href attributes. #1425$$$$$$In the Autotools build system; pkg-config is the only supported way for$$$discovering Guile. Previous use of guile-config* has been removed. #2606$$$$$$The Autotools release artifacts for macOS (Darwin_*_graphviz-*.tar.gz) now$$$use relative paths in links to dependent libraries and plugins. This should$$$make the tree relocatable instead of having to live at /Users/gitlab/builds.$$$#2501$$$$$$$$$gml2gv no longer maps GML label attributes to Graphviz name attributes.$$$These are now mapped to Graphviz label attributes. #2586$$$$$$$$$$$$Fixed$$$$$$In the Autotools build system; the core plugin links against libm; fixing some$$$unresolvable symbols. This was a regression in Graphviz 4.0.0. Though it would$$$primarily have affected non-Graphviz applications attempting to load this$$$plugin on Linux.$$$The osage layout engine now understands a cluster to be indicated by the$$$common rules; including the “cluster” prefix being case insensitive and the$$$cluster=true attribute as an alternative. #2187$$$$$$$$$acyclic once again produces its output on stdout. This was a regression in$$$Graphviz 10.0.1. #2600$$$$$$When using the Tclpathplan module; created vgpanes can once again be named and$$$addressed. This was a regression in Graphviz 12.1.2.$$$Omitting a polygon identifier when running triangulation using the Tclpathplan$$$module (e.g. vgpane0 triangulate instead of vgpane0 triangulate 42) no$$$longer goes unnoticed and reads invalid memory. This bug seems to have existed$$$since the first revision of Graphviz.$$$When using the Tclpathplan module; defining a malformed <3-point polygon$$$and then attempting to triangulate this polygon no longer reads invalid$$$memory. This case is now rejected with an error during triangulation. Like the$$$previous entry; this bug seems to have existed since the first revision of$$$Graphviz.$$$When using the Tclpathplan module; binding a pane’s triangulation callback to$$$a string ending in a trailing % (e.g. vgpane0 bind triangle %) no longer$$$causes later out-of-bounds reads during triangulation. Like the previous$$$entries; this bug seems to have existed since the first revision of Graphviz.$$$#2596$$$$$$Mouse right-clicks in Smyrna are no longer sticky. In some contexts;$$$right-clicking the mouse would register a mouse down event but no mouse up$$$event; leading Smyrna to believe the user was dragging with the right button$$$held down.$$$Arrowhead missing from tail-end of edge #2437$$$$$$The Ruby bindings package (libgv-ruby) is once again installable on Ubuntu.$$$This became uninstallable when Ruby 1.8 was no longer available on Ubuntu; as$$$it had a hard coded dependency of Ruby 1.8. This has now been relaxed to$$$depend on any Ruby version = 1.8. #2607$$$$$$Generated GIFs and JPEGs display the graphed image instead of a single solid$$$color. This was a regression in Graphviz 12.1.1. #2609$$$$$$The CMake build system includes some supporting pieces of the SWIG-generated$$$language bindings that were previously missing. It also links further$$$dependencies that were previously missing.$$$In the

12.1.2 – 2024-09-28$$$$$$Changed$$$$$$In the Autotools build system; the rsvg plugin is no longer built when$$$pangocairo is missing. Previously; when librsvg was found but pangocairo was$$$not; this plugin would be enabled and built but offer no functionality.$$$The RSVG plugin now requires librsvg = 2.42.7.$$$The RSVG plugin uses newer librsvg APIs where available. #2206$$$$$$$$$$$$Fixed$$$$$$In the Autotools build system; fallback discovery of libANN when pkg-config$$$support is unavailable has been corrected to properly enable use of libANN.$$$This primarily affects mingle users on Debian-based operating systems or$$$macOS.$$$The RSVG plugin no longer dereferences a null pointer when failing to create$$$new RSVG handles.$$$The Pango plugin no longer assumes a little endian environment when loading PS$$$images.$$$Deleting a “vgpane” when using the Tclpathplan module no longer frees an$$$invalid pointer. This bug appears to have existed since the first revision of$$$Graphviz. That is; deleting a “vgpane” has always crashed the TCL interpreter$$$or silently corrupted the heap prior to this release.

12.1.1 – 2024-09-09$$$$$$Added$$$$$$Support for building the SWIG-generated Guile language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_GUILE={AUTO|ON|OFF} option.$$$Support for building the SWIG-generated Java language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_JAVA={AUTO|ON|OFF} option.$$$Support for building the SWIG-generated Lua language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_LUA={AUTO|ON|OFF} option.$$$Support for building the SWIG-generated Perl language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-DENABLE_PERL={AUTO|ON|OFF} option.$$$$$$$$$Changed$$$$$$Comparison against a plugin’s knowncolors array is now case-insensitive;$$$rather than requiring all entries of the array to be lower-cased. The$$$requirement that the knowncolors array is lexically ordered remains.$$$The Smyrna “Color Theme”; “Edge Attr. For Color”; and “Node Alpha” settings$$$have been removed. The values of these settings had no effect.$$$Graphviz libraries set close-on-exec on job output files being written and$$$user shape files being read. This should only affect applications using$$$Graphviz libraries that rely on a fork-and-exec-ed child subprocess being able$$$to access these open files. Applications with this requirement can regain the$$$old behavior by unsetting the close-on-exec flag immediately after creating$$$these objects. Graphviz libraries themselves are not affected by whether or$$$not this flag is set.$$$The Autotools build system no longer detects or uses the -perl option to$$$SWIG to build Perl language bindings. Only -perl5 is used.$$$$$$$$$Fixed$$$$$$A reference to the non-existent colxlate function in an error message has$$$been corrected to colorxlate.$$$$$$gvgen no longer crashes sometimes when running random graph generation. This$$$was a regression in Graphviz 12.0.0. #2588$$$$$$Dashed and dotted pen styles in VRML images loaded by the GD plugin have been$$$corrected.$$$$$$mm2gv no longer crashes when reading various types of malformed Matrix$$$Market files.$$$The edgepaint --color_scheme command-line option is once again functional.$$$This was a regression in Graphviz 2.49.0. #2591$$$$$$An incorrect deallocation call during OpenGL texture construction failure has$$$been corrected. This could previously have caused crashes or heap corruption.$$$This was a regression in Graphviz 2.26.0.$$$The CMake build on Windows no longer fails if TCL is detected. This was$$$technically a regression in 12.0.0 since building the Graphviz TCL bindings$$$was integrated into the CMake build system in that release. #2581$$$$$$When its output file cannot be opened; edgepaint no longer dereferences a$$$null pointer when printing its error message.

12.0.0 – 2024-07-04$$$Added$$$Support for building the Graphviz TCL bindings has been integrated into the$$$CMake build system. This is controllable by the -Denable_tcl={AUTO|ON|OFF}$$$option.$$$Support for building the SWIG-generated TCL language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-Denable_swig={AUTO|ON|OFF} option.$$$Support for building the SWIG-generated C# language bindings has been$$$integrated into the CMake build system. This is controllable by the$$$-Denable_sharp={AUTO|ON|OFF} option.$$$$$$$$$Changed$$$$$$The Catch2-based test suite in the CMake build system has been ported from$$$Catch2 v2 to Catch2 v3. Support for Catch2 v2 has been removed. #2465$$$$$$The Windows release artifacts are now built on Windows 2022 and Visual Studio$$$2022 17 and toolset v143.$$$The macOS release artifacts are now built on macOS 13 (Ventura).$$$The CMake build system no longer links dot_builtins against libsocket.$$$The CMake build system now only compiles dot_builtins if building shared$$$libraries (-DBUILD_SHARED_LIBS=ON).$$$$$$Breaking: the polygon_t.style member is now a struct.$$$$$$Breaking: the LEN and MAXDOUBLE constants have been removed.$$$Accuracy in processing compass points has been improved.$$$$$$Breaking: the CMYK_BYTE member of the color_type_t enum and the$$$corresponding gvolor_t.u.cmyk field have been removed. The color format this$$$mapped to was neither documented nor implemented correctly.$$$The Windows releases available for download on graphviz.org now only include$$$CMake-produced packages; not MS Build-produced packages. The MS Build packages$$$are available in the$$$Gitlab package registry if$$$needed.$$$The CMake build system more pervasively sets rpaths of compiled binaries;$$$libraries; and plugins; which should result in them more reliably finding$$$their supporting components.$$$without $LD_LIBRARY_PATH/$DYLD_LIBRARY_PATH tricks.$$$$$$Breaking: the Agraph_t.n_id field is now an opaque pointer.$$$$$$Breaking: the libpack functions putGraphs; putRects; and shiftGraphs$$$now operate on floating-point points (pointf) instead of integer points$$$(point).$$$$$$Breaking: the BF2B macro has been removed.$$$$$$Breaking: the undocumented -Tmp output format has been removed.$$$$$$Breaking: the arith.h header defines neither _GNU_SOURCE nor sincos$$$any more. None of the build systems attempt to discover sincos any more.$$$The FIG output format (-Tfig) supports up to 512 custom colors. The previous$$$limit was 256; after which it would crash (see note in the “Fixed” section).$$$$$$Breaking: The TCL binding’s tcldot_layout function no longer tries to$$$fallback to the dot layout engine if the requested engine is unavailable but$$$instead fails with an error message.$$$The TCL binding’s graph render command no longer ignores layout errors.$$$The TCL binding’s graph write command now does layout unconditionally;$$$regardless of what output renderer is selected.$$$The CMake build system builds cgraph++ and gvc++ as either shared or static$$$libraries; respecting the BUILD_SHARED_LIBS setting.$$$Discovery of the fcntl.h header has been removed from all build systems. This$$$header is now unconditionally assumed to exist.$$$$$$Breaking: obj_state_t.gradient_frac is now a double.$$$$$$Breaking: path.nbox is now a size_t.$$$The change described as “Some routesplines miscalculations that led to lost$$$edges and fatal errors have been avoided” in 11.0.0 has been reverted. The fix$$$for this caused other problems.$$$$$$Breaking: the d and disc parameters have been removed from$$$Dtcompar_f.$$$CentOS packages are no longer provided.$$$In the CMake build system; the minimum required CMake version has been$$$increased to 3.14.1.$$$$$$Breaking: the disc parameter has been removed from Dtfree_f.$$$Gvedit no longer depends on the getopt library.

11.0.0 – 2024-04-28$$$$$$Added$$$$$$$$$gv2gml gained a -y option to output the yWorks.com variant of GML instead$$$of the default.$$$A new command line option; --filepath=… has been added to perform the$$$function previously served by the $GV_FILE_PATH environment variable; use of$$$which was removed in Graphviz 6.0.1. Unlike the old $GV_FILE_PATH mechanism;$$$--filepath=… takes effect regardless of the setting of the $SERVER_NAME$$$environment variable. #2396$$$$$$$$$$$$Changed$$$$$$$$$gvpack; in addition to recognizing a “cluster” name prefix as a mark of a$$$cluster; now recognizes this case insensitively as well as recognizing the$$$cluster attribute. This is more consistent with how the Graphviz libraries$$$work.$$$$$$Breaking: pkg-config (.pc) files shipped with Graphviz now include$$$${prefix}/include in the include path in addition to$$$${prefix}/include/graphviz. Previously this missing path meant building$$$Graphviz demo examples against an installation of Graphviz in a non-system$$$path would not work. #2474$$$$$$The core PostScript output format (-Tps) warns if using an$$$out-of-specification font name. To avoid this; use a more sophisticated output$$$format like Cairo (-Tps:cairo) that does font name lookup and translation.$$$#218$$$$$$$$$Breaking: The libpack functions putRects; packRects; putGraphs;$$$packGraphs; packSubgraphs; pack_graph; shiftGraphs; ccomps;$$$cccomps; and pccomps now take the number of items they are operating on$$$(ng) as a size_t.$$$$$$Breaking: The bsearch_cmpf and qsort_cmpf typedefs have been removed.$$$$$$dot -c -v; when constructing the config6 file; includes comments explaining$$$any attempted actions that failed during plugin loading. #2456$$$$$$$$$Breaking: The Ndim global is now a unsigned short.$$$fdpgen no longer truncates graph names when inferring new names for connected$$$component subgraphs.$$$$$$Breaking: The nodequeue type has been removed.$$$$$$Breaking: The field Agraphinfo_t.n_nodes has been removed. The function$$$agnnodes is a more robust way of retrieving the number of nodes.$$$The -q command line option will now suppress “no hard-coded metrics…”$$$and other font lookup warnings. #2379$$$$$$$$$Breaking: The CMP and SGN macros have been removed.$$$The CMake build system no longer early-binds all enabled plugins into$$$dot/dot. This early binding was a change introduced in 10.0.1; but was$$$not noted in this changelog. Traditionally; of the three Graphviz build$$$systems (Autotools; CMake; MS Build); only changes to the Autotools build$$$system were noted in this changelog under the assumption that packaging$$$ecosystems making use of the other two build systems would need finer grained$$$details and would be monitoring the Git commit history instead. This seems to$$$not be the case; so in future side-effecting changes to any of the three build$$$systems will be included here. #2527; #2528$$$$$$The precision of sep- and esep-based calculations has been improved.$$$$$$Breaking: Defines AGRAPH; AGNODE; AGOUTEDGE; AGINEDGE; and AGEDGE are$$$replaced with enum.$$$$$$Breaking: The obj_state_t.url_bsplinemap_poly_n field is now a size_t$$$and the obj_state_t.url_bsplinemap_n field is now a size_t *.$$$$$$Breaking: The Ppoly_t.pn (Ppolyline_t.pn) field is now a size_t.$$$$$$Breaking: The Proutespline function takes its n_barriers parameter as$$$a size_t.$$$$$$Breaking: The gvattr_t type and the GVJ_t.selected_obj_attributes and$$$GVJ_t.selected_obj_type_name fields have been removed.$$$$$$Breaking: The gv_argvlist_t type and functions that operate on it have$$$been removed.$$$Control characters in some error messages are escaped; preventing certain$$$types of text injection that could cause user confusion.$$$$$$Breaking: GVJ_t.numkeys is a size_t.$$$$$$$$$Fixed$$$$$$Indexing within gvNextInputGraph no longer incorrectly retains the index$$$from prior use of the GVC context. When using Graphviz libraries$$$programmatically; this could previously cause crashes or misbehavior. #2484$$$$$$Color schemes; typically controlled through the colorscheme attribute are$$$now pushed