gvc++: include gvc.h without the gvc directory prefix in GVContext.h

This makes it possible to use GVContext.h from the install directory
where gvc.h is not located under this prefix.

Towards https://gitlab.com/graphviz/graphviz/-/issues/2196.

diff --git a/lib/gvc++/GVContext.h b/lib/gvc++/GVContext.h
index e7e893c6528735f776fe59a19d73e3033f242608..7616dfc02f09a698617365c3f79f5324194a6e45 100644 (file)
--- a/lib/gvc++/GVContext.h
+++ b/lib/gvc++/GVContext.h
@@ -2,7 +2,7 @@
 
 #include <utility>
 
-#include <gvc/gvc.h>
+#include <gvc.h>
 
 #ifdef GVDLL
 #if gvc___EXPORTS // CMake's substitution of gvc++_EXPORTS