From 6d3a28dcf803acac3532e747e6ad36a121893ecd Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Mon, 10 Jan 2022 16:35:24 +0100
Subject: [PATCH] gvc++: use GVDLL instead of _WIN32 to control storage-class
 attributes in GVLayout.h

Towards https://gitlab.com/graphviz/graphviz/-/issues/2173.
---
 lib/gvc++/GVLayout.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/gvc++/GVLayout.h b/lib/gvc++/GVLayout.h
index b961824da..9de45440b 100644
--- a/lib/gvc++/GVLayout.h
+++ b/lib/gvc++/GVLayout.h
@@ -6,7 +6,7 @@
 #include "GVRenderData.h"
 #include <cgraph++/AGraph.h>
 
-#ifdef _WIN32
+#ifdef GVDLL
 #if gvc___EXPORTS // CMake's substitution of gvc++_EXPORTS
 #define GVLAYOUT_API __declspec(dllexport)
 #else
-- 
2.40.0