Note that the findStopColor function in gvc.h was missing in gvc.def.
Towards https://gitlab.com/graphviz/graphviz/-/issues/2058.
arrow_length
arrowEndClip
arrowStartClip
-attach_attrs
attach_attrs_and_arrows
beginpath
Bezier
gv_cleanup_node
gv_free_splines
gv_nodesize
-gvAddLibrary
-gvcBuildDate
-gvcInfo
-gvContext
-gvcVersion
gvCloneGVC
gvFreeCloneGVC
-gvFreeContext
-gvFreeLayout
-gvLayout
-gvLayoutJobs
-gvLayoutDone
-gvNEWcontext
-gvNextInputGraph
-gvParseArgs
-gvPluginsGraph
gvprintdouble
gvprintf
gvprintpointf
gvputs
gvputs_nonascii
gvputs_xml
-gvRender
-gvRenderData
-gvFreeRenderData
-gvRenderFilename
-gvRenderJobs
-gvToggle
-gvToolTred
gvusershape_file_access
gvusershape_file_release
gvwrite
write_plain
xml_escape
colorxlate
-gvContextPlugins
gvferror
getPackInfo
getPackModeInfo
parsePackModeInfo
putRects
xdotBB
-gvFinalize
gv_postprocess
-gvRenderContext
gvflush
gvrender_ptf
setColorScheme
is_a_cluster
mapBool
drand48
-gvPluginList
get_gradient_points
mkClustMap
findCluster